Charles Messier's Personal Copy of his 1780
"Catalog of Nebulae and Star Clusters"

Appended is the translation of the separate note on Messier's discovery of M69 and M70, which appeared in an appendix to the same volume (Messier 1780a).

This is a presentation close to the published work, with introduction and appendices, and without much further discussion. For discussion of these observations see the Messier Catalog main page.

M. Messier has observed with the utmost care, the Nebulae and Star clusters which one can detect over the horizon of Paris; he has determined their Right Ascension and Declination and given their diameters, together with circumstantial details for each one: a work which was missing in astronomy.

He also goes into the details of the searches which he has made for those other nebulae which have been discovered by other astronomers, but which he has looked for without success.

The Catalog of Nebulae and Star clusters, by M. Messier, was included in the volume of the Academy of Sciences, for the year 1771, page 435. He reported at the end of his Memoir, a drawing outlined with the greatest care, of the fine nebula in the sword of Orion, with the stars it contains. This drawing will be of help to recognize it again, provided that it is not subject to change with time. If one compares the present drawing with those of Ms. Huygens, Picard, de Mairan & le Gentil, one is astonished to find such a change in it that, considering its shape alone, one would have difficulty to recognise it as the same nebula. M. Le Gentil's drawing can be seen in the volume of the Academy for 1759, page 470, plate XXI.

To the Catalog printed by M. Messier, which we give here, we have also reported a large number of nebulae & star clusters which he has discovered since the printing of his Memoir, & which he has communicated to us.

With the positions of the nebulae, M. Messier reports the numbers which are the same on the following pages, & on which the details of each of the observed nebulae are given.

1. 5h 20m 02s (80d 00' 33") +21d 45' 27"

(September 12, 1758) `Nebula above the southern horn of Taurus, it doesn't contain any star; it is a whitish light, elongated in the shape of a flame of a candle, discovered while observing the comet of 1758. See the chart of that comet, Mem. Acad. of the year 1759, page 188.'

[A note in Messier's handwriting added in the margin of his copy of the Connoissance des Temps for 1783 reads:] `This nebula reported on the great English atlas: Seen by Dr Bevis about 1731. according to his letter written to me on 10th June 1771.'

2. 21h 21m 08s (320d 17' 00") -1d 47' 00"

(September 11, 1760) `Nebula without star in the head of Aquarius, its center is brilliant, & the light surrounding it is round; it resembles the beautiful nebula which is situated between the head & the bow of Sagittarius [M22], it is seen very well with a telescope of 2 feet [FL], placed below the parallel [same Dec] of Alpha Aquarii. M. Messier has reported this nebula on the chart of the path of the comet observed in 1759. Mem. Acad. of the year 1760, page 464. M. Maraldi has seen this nebula in 1746 while observing the comet which appeared that year. (Diam. 4')'

3. 13h 31m 25s (202d 51' 19") +29d 32' 57"

(May 3, 1764) `Nebula discovered between Bootes & one of the Hunting Dogs of Hevelius, it doesn't contain any star, its center is brilliant, & its light is gradually fading away, it is round; in a good [dark] sky, one can see it in a telescope of 1-foot [FL]: It is reported on the chart of the comet observed in 1779. Memoirs of the Academy of the same year. (Diam. 3')'

[Handwritten remark in Messier's copy:] `Reviewed on March 29, 1781.'

4. 16h 09m 08s (242d 16' 56") -25d 55' 40"

[Error/misprint in Dec corrected by hand from -25d 35' 40" to -25d 55' 40" - also see correction below].
(May 8, 1764) `Cluster of very small [faint] stars; with an inferior telescope, it appears more like a nebula; this cluster is situated near Antares & on its parallel. (Diam 2 1/2')'

[Handwritten remarks in Messier's copy:] `Observed b. M. de La Caille [..? as a ? difficult to read - hf] Nebul.'
`Reviewed on March 22, 1781.'
`Reviewed on Jan. 30, 1781 & [..] determine [..]: ri. as. 242 17 22, decl. 25 50 03".'

5. 15h 06m 36s (226d 39' 04") +2d 57' 16"

(May 23, 1764) `Beautiful Nebula discovered between the Balance [Libra] & the Serpent [Serpens], near the star in the Serpent, of 6th magnitude, which is the 5th according to the Catalog of Flamsteed catalog [5 Ser]: it doesn't contain any star; it is round, & one sees it very well, in a fine [clear dark] sky, with an ordinary refractor of 1-foot [FL]. M. Messier has reported it in the chart of the comet of 1763. Mem. Acad for the year 1774, page 40. (Diam. 3')'

[Handwritten remark in Messier's copy:] Reviewed on September 5, 1780. Reviewed on January 30, 1781. More beautiful [..]

6. 17h 24m 42s (261d 10' 39") -32d 10' 34"

[Error/misprint in RA corrected by hand from 17h 14m 42s to 17h 24m 42s, in Dec corrected by hand from -32d 10' 3" to -32d 10' 34" - also see correction below].
(May 23, 1764) `Cluster of small stars between the bow of Sagittarius & the tail of Scorpius. To the naked eye, this cluster seems to form a nebula without stars; but even with the smallest instrument one has employed for investigating it one sees a cluster of small [faint] stars. (Diam. 15')'

[Handwritten remark:] Lacaille has it.

7. 17h 38m 02s (264d 30' 24") -34d 40' 34"

(May 23, 1764) `A star cluster, more considerable than the preceding [M6]; to the naked eye, this cluster looks like a nebulosity; it is little distant from the preceding, placed between the bow of Sagittarius & the tail of Scorpius. (Diam. 30')'

[Handwritten remark:] Lacaille has it.

8. 17h 49m 58s (267d 29' 30") -24d 21' 10"

(May 23, 1764) `A cluster which appears like a nebula in an ordinary telescope of 3 feet [FL] but with an excellent instrument, one perceives nothing but a large number of small stars; near this star cluster is a fairly bright star, surrounded by a very faint glow: this is 9 Sagittarii, of 7th mag, according to Flamsteed: this cluster appears in elongated shape, extended NE-SW, between the arc of Sagittarius & the foot of Ophiuchus. (Diam. 30')'

[Handwritten remark:] Lacaille has it.

9. 17h 05m 22s (256d 20' 36") -18d 13' 26"

(May 28, 1764) `Nebula, without star, in the right leg of Ophiuchus; it is round & its light is faint. Reviewed on March 22, 1781. (Diam. 3')'

10. 16h 44m 48s (251d 12' 06") -3d 42' 18"

(May 29, 1764) `Nebula, without stars, in the belt of Ophiuchus; near the thirtieth star of that constellation, of sixth magnitude, according to Flamsteed. This nebula is beautiful & round; one can only see it with difficulty in an ordinary telescope of 3-feet [FL]. M. Messier has reported on the 2nd chart of the track of the comet of 1769. Mem. Acad. for the year 1775, plate IX. Reviewed on March 6, 1781.' (Diam. 4')

[manuscript note in Messier's personal copy:] `Reviewed in the morning of March 6, 1781. "Always very fine." Reviewed in the morning of March 10, 1790. Night-glass of Rebour.'

11. 18h 30m 23s (279d 35' 43") -6d 31' 01"

(May 30, 1764) `Cluster of a great number of small stars, near the star K of Antinous, which one can see only in a good instrument; with an ordinary telescope of 3 feet it resembles a comet: This cluster is mingled with a faint glow; in this cluster there is a star of 8th magnitude. Mr. Kirch observed it in in 1681. Philosophical Transactions, No. 347, p. 390.' (diam. 4')

[Handwritten remark:] Reported on the English Great Atlas.

12. 16h 34m 53s (248d 43' 10") -2d 30' 28"

(May 30, 1764) `Nebula discovered in the Serpent, between the arm and the left side of Ophiuchus: this nebula contains no star, it is round & its light is faint; near this nebula there is a star of 9th magnitude. M. Messier reported it on the 2nd chart of the comet observed in 1769. Mem. Acad. 1775, pl. IX. Reviewed on March 6, 1781. (diam. 3')'

[Handwritten remark in Messier's copy:] Reviewed on March 10, 1790.

13. 16h 33m 15s (248d 18' 48") +36d 54' 44"

(June 1, 1764) `A nebula without a star, discovered in the belt of Hercules; it is round & brilliant, the center is more brilliant than the edges, one perceives it with a telescope of one foot [FL]; it is near two stars, both of 8th magnitude, the one above and the other below it: the nebula's position was determined by comparison with Epsilon Herculis. M. Messier has reported it on the chart of comet of 1779, which was included in the volume of the Academy of that year. Seen by Halley in 1714. Reviewed Jan. 5 and 30, 1781. It is reported in the English Celestial Atlas.' (diam. 6')

14. 17h 25m 14s (261d 18' 29") -3d 05' 45"

(June 1, 1764) `Nebula without star, discovered in the garb which dresses the right arm of Ophiuchus, & situated on the parallel of Zeta Serpentis: This nebula is not large, its light is faint, one can see it nevertheless in an ordinary telescope of 3.5-foot [FL]; it is round, near it is a small star of 9th magnitude; its position has been determined by comparison with Gamma Ophiuchi, & M. Messier has reported its position on the chart of the comet of 1769. Memoirs de l'Academy, year 1775, plate IX. Reviewed on March 22, 1781.' (diam. 7')

15. 21h 18m 41s (319d 40' 19") +10d 40' 03"

(June 3, 1764) `Nebula without a star, between the head of Pegasus and that of Equuleus; it is round, in the center it is brilliant, its position was determined by comparison with Delta Equulei. M. Maraldi, in the Memoirs of the Academy of 1746, reports of this nebula: "I have found, he says, between the stars Epsilon Pegasi and Beta Equulei, a fairly bright nebulous star, which is composed of many stars; its right ascension is 319d 27' 6", and its northern declination is 11d 2' 22".' (diam. 3')

16. 18h 05m 00s (271d 15' 03") -13d 51' 44"

(June 3, 1764) `A cluster of small stars, enmeshed in a faint glow, near the tail of Serpens, at little distance to the parallel of Zeta of this constellation; with an inferior telescope this cluster appears like a nebula.' (diam. 8')

17. 18h 07m 03s (271d 45' 48") -16d 14' 44"

(June 3, 1764) `A train of light without stars, of 5 or 6 minutes in extent, in the shape of a spindle, & a little like that in Andromeda's belt [M31] but of a very faint light; there are two telescopic stars nearby & placed parallel to the equator. In a good sky one observes this nebula very well in an ordinary telescope of 3.5-foot [FL]. Reviewed on 22 March 1781.' (diam. 5')

18. 18h 06m 16s (271d 34' 03") -17d 13' 14"

(June 3, 1764) `A cluster of small stars, a little below above nebula, No. 17, surrounded by slight nebulosity, this cluster is less obvious than the preceding, No. 16: with an ordinary telescope of 3.5-foot [FL], this cluster appears like a nebula; but with a good telescope one sees nothing but stars.' (diam. 5')

19. 16h 48m 07s (252d 01' 45") -25d 54' 46"

(June 5, 1764) `Nebula without stars, on the parallel of Antares between Scorpius and the right foot of Ophiuchus: this nebula is round; one can see it very well with an ordinary telescope of 3.5-foot [FL]; the nearest neighboring known star to this nebula is 28 Ophiuchi, which is of mag. 6, according to Flamsteed.' (diam. 3')

20. 17h 48m 16s (267d 04' 05") -22d 59' 10"

(June 5, 1764) `Cluster of stars, a little above the Ecliptic, between the bow of Sagittarius & the right foot of Ophiuchus. Reviewed on March 22, 1781.' [see also description of M21]

21. 17h 50m 07s (267d 31' 35") -22d 31' 25"

(June 5, 1764) `Star cluster, near the preceding [M20]: The nearest neighboring known star to these two clusters is 11 Sagittarii, 7 mag, according to Flamsteed. The stars of both these clusters are of 8-9 magnitude, enveloped in nebulosity.'

22. 18h 21m 55s (275d 28' 39") -24d 06' 11"

(June 5, 1764) `Nebula, below the ecliptic, between the head and the bow of Sagittarius, near a star of 7th magnitude, 25 Sagittarii, according to Flamsteed, this nebula is round, it doesn't contain any star, & one can see it very well in an ordinary telescope of 3.5-foot [FL]; the star Lambda Sagittarii served for determination [of its position]. Abraham Ihle, a German, discovered it in 1665, while observing Saturn. M. Le Gentil observed it in 1747, & he made an engraving of it. Memoirs of the Academy, year 1759, page 470. Reviewed on March 22, 1781; it is reported in the English Atlas.' (diam. 6')

23. 17h 42m 51s (265d 42' 50") -18d 45' 55"

(June 20, 1764) `A star cluster, between the end of the bow of Sagittarius & the right foot of Ophiuchus, very near to 65 Ophiuchi, according to Flamsteed. The stars of this cluster are very close to one another. Its position was determined from Mu Sagittarii.' (diam. 15')

24. 18h 01m 44s (270d 26' 00") -18d 26' 00"

(June 20, 1764) `Cluster on the parallel of the preceding [M23] & near the end of the bow of Sagittarius, in the Milky Way: a large nebulosity in which there are many stars of different magnitudes: the light which is spread throughout this cluster is divided into several parts; it is the center of this cluster which has been determined [position].' (diam. 1d 30')

25. 18h 17m 40s (274d 25' 00") -19d 05' 00"

(June 20, 1764) `A cluster of small stars in the neighborhood of the two previous clusters [M23 and M24], between the head & the end of the bow of Sagittarius: the nearest known star to this cluster is 21 Sagittarii, 6th magnitude, according to Flamsteed. The stars of this cluster are seen with difficulty with an ordinary telescope of 3.5-foot [FL]; no nebulosity can be seen. Its position has been determined from Mu Sagittarii.' (diam. 10')

26. 18h 32m 22s (278d 05' 25") -9d 38' 14"

(June 20, 1764) `A cluster near Eta and Omicron in Antinous [now Alpha and Delta Scuti], between which there is another one of more brightness: with a telescope of 3.5-foot [FL] one cannot distinguish them, one needs to employ a good instrument. This cluster contains no nebulosity.' (diam. 2')

27. 19h 49m 27s (297d 21' 41") +22d 04' 00"

(July 12, 1764) `Nebula without star, discovered in Vulpecula, between the two forepaws, & very near the star 14 of that constellation, of 5th magnitude according to Flamsteed; one can see it well with an ordinary telescope of 3.5-foot [FL]; it appears of oval shape, & it contains no star. M. Messier has reported its position on the chart of the Comet of 1779, which was engraved for the volume of the Academy of the same year. Reviewed on January 31, 1781.' (diam. 4')

28. 18h 09m 58s (272d 29' 30") -24d 57' 11"

(July 27, 1764) `Nebula discovered in the upper part of the bow of Sagittarius at about one degree from the star Lambda & little distant from the beautiful nebula which is between the head and the bow [M22]. It contains no star; it is round, it can only be seen difficultly with an ordinary telescope of 3.5-foot [FL]. Its position has been determined from Lambda Sagittarii. Reviewed on March 20, 1781.' (diam. 2')

29. 20h 15m 38s (303d 54' 29") +37d 11' 57"

[Error/misprint in Dec corrected by hand from +27d 11' 57" to +37d 11' 57" - also see correction below].
(July 29, 1764) `A cluster of 7 or 8 very small stars, which are below Gamma Cygni, which one sees with an ordinary telescope of 3.5-foot [FL] in the form of a nebula. Its position determined from Gamma Cygni. Reported on chart of the Comet of 1779.'

30. 21h 27m 05s (321d 46' 18") -24d 19' 04"

(August 3, 1764) `Nebula discovered below the tail of Capricorn, very near to the star 41 of that constellation, of 6th magnitude, according to Flamsteed. One sees it with difficulty with an ordinary telescope of 3.5-foot [FL]. It is round & contains no star; its position determined from Zeta Capricorni, M. Messier reported it on chart of the Comet of 1759. Mem. Acad. 1760, pl. II.' (diam. 2')

31. 0h 29m 46s (7d 26' 32") +39d 09' 32"

(August 3, 1764) `The beautiful nebula of the belt of Andromeda, shaped like a spindle; M. Messier has investigated it with different instruments, & he didn't recognise a star: it resembles two cones or pyramides of light, opposed at their bases, the axes of which are in direction NW-SE; the two points of light or the apices are about 40 arc minutes apart; the common base of the pyramids is about 15'. This nebula was discovered by Simon Marius, & consequently observed by different astronomers. M. le Gentil has given a drawing in the Memoirs of the Academy for 1759, page 453. It is reported on the English Atlas.' (diam. 40')

(Flammarion reports that Messier added a note in his personal copy of the catalog by hand: `I have employed different instruments, especially an excellent Gregorian telescope of 30 feet FL, the large mirror 6 inches in diameter, magnification 104x. The center of this nebula appears fairly clear in this instrument without any stars appearing. The light gradually diminishes until it becomes extinguished. The former measurements were made with a Newtonian telescope of 4.5 feet FL, provided with a silk thread micrometer. Diameter 40'. August 3, 1764.')

32. 0h 29m 50s (7d 27' 32") +38d 45' 34"

(August 3, 1764) `Small nebula without stars, below & at some minutes [separation] from that of the belt of Andromeda [M31]; this small nebula is round, its light fainter than that of the belt. M. le Gentil has discovered it on October 29, 1749. M. Messier saw it, for the first time, in 1757, & he has not found any change.' (diam. 2')

33. 1h 40m 37s (20d 09' 17") +29d 32' 25"

(August 25, 1764) `Nebula discovered between the head of the Northern Fish [of Pisces] & the great Triangle, a bit distant from a star of 6th magnitude: The nebula is of a whitish light of almost even density [of brightness], however a little brighter along two-third of its diameter, & contains no star. One sees it with difficulty with an ordinary telescope of 1-foot [FL]. Its position was determined from Alpha Trianguli. Reviewed on September 27, 1780.' (diam. 15')

34. 2h 27m 27s (36d 51' 37") +41d 39' 32"

(August 25, 1764) `Cluster of small stars, between the head of Medusa (Algol) & the left foot of Andromeda, a little below the parallel of Gamma [Andromedae]: with an ordinary telescope of 3 foot [FL] one can distinguish the stars. Its position has been determined from Beta [Persei], the head of Medusa.' (diam. 15')

35. 5h 54m 41s (88d 40' 09") +24d 33' 30"

(August 30, 1764) `Cluster of very small stars, near the left foot of Castor, at a little distance from the stars Mu & Eta of that constellation [Gemini]. M. Messier has reported its position on the chart of the comet of 1770, Mem. Acad. 1771, pl. VII. Reported in the English Atlas.' (diam. 20')

36. 5h 20m 47s (80d 11' 42") +34d 08' 06"

(September 2, 1764) `Cluster of stars in Auriga, near the star Phi: with an ordinary telescope of 3.5 foot [FL] one has pain to distinguish the stars, the cluster contains no nebulosity. Its position determined from Phi [Aurigae].' (diam. 9')

37. 5h 37m 01s (84d 15' 12") +32d 11' 51"

(September 2, 1764) `Cluster of small stars, little remote from the preceding [M36], above the parallel of chi Aurigae; the stars are smaller, more close together and enclosing some nebulosity; with an ordinary telescope of 3.5 feet [FL], one has pain to see the stars: this cluster is reported on the Chart of the second Comet of 1771, Mem. Acad. 1777.' (diam. 9')

[Handwritten remark in Messier's copy:] Reviewed on the 6th of March, 1781.

38. 5h 12m 41s (78d 10' 12") +36d 11' 51"

(September 25, 1764) `Cluster of small stars in Auriga, near the star Sigma, little distant from the two preceding clusters [M36 and M37]; this one is of square shape & contains no nebulosity, if one takes care to examine it with a good telescope. Its extension is about 15' of arc.' (diam. 15')

39. 21h 23m 49s (320d 57' 10") +47d 25' 00"

(October 24, 1764) `Cluster of stars near the tail of the Swan; one can see them with an ordinary telescope of 3.5 feet [FL].' (diam. 1d 00')

40. 12h 11m 02s (182d 45' 30") +59d 23' 50"

(October 24, 1764) [1771] `The same night on October 24-25, [1764] I searched for the nebula above the tail of the Great Bear, which is indicated in the book Figure of the Stars, second edition. Its position in 1660 was right ascension 183d 32' 41", declination 60d 20' 33". By means of this position, I found two stars very near each other and of equal brightness, about 9th magnitude, placed at the beginning of the tail of the Great Bear. One can hardly distinguish them in an ordinary (nonachromatic) refractor of 6 feet [FL]. Their position is 182 deg 45' 30", +59 deg 23' 50". We presume that Hevelius mistook these two stars for a nebula.'

[1780 and 1781] `Two stars very close together & very small, placed at the root of the tail of the Great Bear: One has difficulty to distinguish them with an ordinary telescope of 6 feet [FL]. While searching for the nebula above the back of Ursa Major, reported in the book Figures des Astres, and which is supposed to be for 1660 at 183d 32' 41" right ascension, & 60d 20' 33" northern declination, which Messier couldn't see, he has observed these two stars.'

[actually, it seems that Hevelius has observed another nearby binary, 74 Ursae Majoris, of mag 5]

41. 6h 35m 53s (98d 58' 12") -20d 33' 00"

(January 16, 1765) `Cluster of stars below Sirius, near Rho Canis Majoris; this cluster appears nebulous in an ordinary telescope of one foot [FL]; it is nothing more than a cluster of small stars.'

42. 5h 23m 59s (80d 59' 40") -5d 34' 06"

(March 4, 1769) `Position of the beautiful nebula in the sword of Orion, around the star Theta which ii contains [together] with three other smaller stars which one cannot see but with good instruments. Messier has entered into the great details in this great nebula; he has created a drawing, made with the greatest care, which one can see in the Memoirs of the Academy for 1771, plate VIII. It was Huygens who discovered it in 1656: it has been observed since by many astronomers. Reported in the English Atlas.'

43. 5h 24m 12s (81d 03' 00") -5d 26' 37"

(March 4, 1769) `Position of the little star surrounded by nebulosity & which is below the nebula of the sward of Orion. M. Messier has included it in the drawing of the Great [Nebula].'

44. 8h 27m 22s (126d 50' 30") +20d 31' 38"

[Error/misprint in RA corrected by hand from 15h 07m 22s to 8h 27m 22s - also see correction below].
(March 4, 1769) `Cluster of stars known by the name of the nebula in Cancer. The position given is that of the star C.'

45. 3h 33m 48s (53d 27' 04") +23d 22' 41"

(March 4, 1769) `A cluster of stars, known by the name of the Pleiades. The position reported is that of the star Alcyone.'

46. 7h 31m 11s (112d 47' 43") -14d 19' 07"

(February 19, 1771) `A cluster of very small stars, between the head of the Great Dog and the two hind feet of the Unicorn, [its position] determined by comparing this cluster with the star 2 Navis, of 6th-magnitude, according to Flamsteed; one cannot see these stars but with a good refractor; the cluster contains a bit of nebulosity.'

47. 7h 44m 16s (116d 03' 58") -14d 50' 08"

(February 19, 1771) `Cluster of stars, little distant from the preceding; the stars are greater [brighter]; the middle of the cluster was compared with the same star, 2 Navis. The cluster contains no nebulosity.'

(At the position recorded by Messier, which also found its way into John Herschel's GC as GC 1594 and, consequently, into Dreyer's NGC as NGC 2478, no cluster is found, so that this object was missed, until Oswald Thomas identified it correctly but perhaps by chance in 1934 as Herschel's cluster H VIII.38 (NGC 2422), and T.F. Morris, in 1959, realised that Messier had done a simple sign error in RA difference when reducing the positional data.)

48. 8h 02m 24s (120d 36' 00") -1d 16' 42"

(February 19, 1771) `Cluster of very small [faint] stars, without nebulosity; this cluster is at a short distance from the three stars that form the beginning of the Unicorn's tail.'

(As for M47, Messier did a reduction error, this time giving a position exactly 5 degrees north of the object, so that M48 was missing until T.F. Morris identified it in 1959 (with Herschel's H VI.22, NGC 2548).)

49. 12h 17m 48s (184d 26' 58") +9d 16' 09"

(February 19, 1771) `Nebula discovered near the star Rho Virginis. One cannot see it without difficulty with an ordinary telescope of 3.5-feet [FL]. The Comet of 1779 was compared by M. Messier with this nebula on April 22 and 23: The comet and the nebula had the same light. M. Messier has reported this nebula on the chart of the route of the comet, which appeared in the volume of the Academy of the same year 1779. Reviewed on April 10, 1781.'

50. 6h 51m 50s (102d 57' 28") -7d 57' 42"

(April 5, 1772) `Cluster of small stars, more or less brilliant, above the right loins of the Unicorn, above the star Theta of the ear of Canis Major, & near a star of 7th magnitude. It was while observing the Comet of 1772 that M. Messier observed this cluster. He has reported it on the chart of that comet, on which its trace has been drawn. Mem. Acad. 1772.'

51. 13h 20m 23s (200d 05' 48") +48d 24' 24"

(January 11, 1774) `Very faint nebula, without stars, near the eye of the Northern Greyhound [hunting dog], below the star Eta of 2nd magnitude of the tail of Ursa Major: M. Messier discovered this nebula on October 13, 1773, while he was watching the comet visible at that time. One cannot see this nebula without difficulties with an ordinary telescope of 3.5 foot [FL]: Near it is a star of 8th magnitude. M. Messier reported its position on the Chart of the Comet observed in 1773 & 1774. Memoirs of the Academy 1774, plate III. It is double, each has a bright center, which are separated 4'35". The two "atmospheres" touch each other, the one is even fainter than the other. Reobserved several times.'

[Handwritten note in Messier's personal copy of the 1780 version of the catalog:] M. Méchain has seen that nebula on March 21, 1781 .. [included is a sketch of the two "nebulae" and a star]

52. 23h 14m 38s (348d 39' 27") +60d 22' 12"

(September 7, 1774) `Cluster of very small [faint] stars, mingled with nebulosity, which can be seen only with an achromatic telescope. It was when he observed the Comet which appeared in this year that M. Messier saw this cluster, which was close to the comet on the 7th of September 1774; it is below the star d Cassiopeiae: that star was used to determine [the position of] both the cluster of stars & the comet.'

53. 13h 02m 02s (195d 30' 26") +19d 22' 44"

[Error/misprint in RA corrected by hand from 19h 42m 22s to 13h 02m 02s - also see correction below].
(February 26, 1777) `Nebula without stars discovered below & near Coma Berenices, a little distant from the star 42 in that constellation, according to Flamsteed. This nebula is round and conspicuous. The Comet of 1779 was compared directly with this nebula, & M. Messier has reported it on the chart of that comet, which will be included in the volume of the Academy for 1779.'

54. 18h 40m 52s (280d 12' 55") -30d 44' 01"

(July 24, 1778) `Very faint nebula, discovered in Sagittarius; its center is brilliant & it contains no star, seen with an achromatic telescope of 3.5 feet [FL]. Its position has been determined from Zeta Sagittarii, of 3rd magnitude.'

55. 19h 26m 02s (291d 30' 25") -31d 26' 27"

(July 24, 1778) `A nebula which is a whitish spot, of about 6' extension, its light is even and does not appear to contain any star. Its position has been determined from zeta Sagittarii, with the use of an intermediate star of 7th magnitude. This nebula has been discovered by M. l'Abbe de LaCaille, see Mem. Acad. 1755, p. 194 [Glyn Jones has erroneously 1775]. M. Messier has looked for it in vain on July 29, 1764, as reported in his memoir.'

56. 19h 08m 00s (287d 00' 01") +29d 48' 14"

(January 23, 1779) `Nebula without stars, having little light; M. Messier discovered it on the same day as he found the comet of 1779, January 19. On the 23rd, he determined its position by comparing it with the star 2 Cygni, according to Flamsteed: it is near the Milky Way; and close to it is a star of 10th magnitude. M. Messier reported it on the chart of the comet of 1779.'

57. 18h 45m 21s (281d 20' 08") +32d 46' 03"

(January 31, 1779) `A cluster of light between Gamma & Beta Lyrae, discovered when looking for the Comet of 1779, which has passed it very close: it seems that this patch of light, which is round, must be composed of very small stars: with the best telescopes it is impossible to distinguish them; there stays only a suspicion that they are there. M. Messier reported this patch of light on the Chart of the Comet of 1779. M. Darquier, at Toulouse, discovered it when observing the same comet, and he reports: "Nebula between gamma and beta Lyrae; it is very dull, but perfectly outlined; it is as large as Jupiter & resembles a planet which is fading".'

58. 12h 26m 30s (186d 37' 23") +13d 02' 42"

(April 15, 1779) `Very faint nebula discovered in Virgo, almost on the same parallel as epsilon [Virginis], 3rd mag. The slightest light for illuminating the micrometer wires makes it disappear. M. Messier reported it on the chart of the Comet of 1779, which is located inthe volume of the Academy for the same year.'

59. 12h 30m 47s (187d 41' 38") +12d 52' 36"

(April 15, 1779) `Nebula in Virgo & in the neighborhood of the preceding [M58], on the parallel of epsilon [Virginis], which has served for its [position] determinaion: it is of the same light as the above, equally faint. M. Messier reported it on the Chart of the Comet of 1779.'

60. 12h 32m 28s (188d 06' 53") +12d 46' 02"

(April 15, 1779) `Nebula in Virgo, a little more distinct than the two preceding [M58 and M59], on the same parallel as epsilon [Virginis], which has served for its [position] determination. M. Messier reported it on the Chart of the Comet of 1779. He discovered these three nebulae while observing this Comet which passed very close to them. The latter passed so near on April 13 & 14 that the one & the other were both in the same field [of view] of the refractor, and he could not see it; it was not until the 15th, while looking for the Comet, that he perceived the nebula. These three nebulae don't appear to contain any star.'

61. 12h 10m 44s (182d 41' 05") +5d 42' 05"

[Error/misprint in RA corrected by hand from 18h 50m 44s to 12h 10m 44s - also see correction below].
(May 11, 1779) `Nebula, very faint & difficult to perceive. M. Messier mistook this nebula for the Comet of 1779, on the 5th, 6th & 11th of May; on the 11th he recognized that this was not the Comet, but a nebula which was located on its path & in the same point [place] of the sky.'

62. 16h 47m 14s (251d 48' 24") -29d 45' 30"

(June 4, 1779) `Very beautiful nebula, discovered in Scorpio, it resembles a little Comet, the center is brilliant & surrounded by a faint glow. Its position [was] determined, by comparing it with the star Tau of Scorpius. M. Messier had already seen this nebula on June 7, 1771, without having determined the position where it is close to. Reviewed on March 22, 1781.'

63. 13h 04m 22s (196d 05' 30") +43d 12' 37"

(June 14, 1779) `Nebula discovered by M. Méchain in Canes Venatici. M. Messier searched for it; it is faint, it has nearly the same light as the nebula reported under no. 59 [M59]: it contains no star, & the slightest illumination of the micrometer wires makes it disappear: it is close to a star of 8th magnitude, which precedes the nebula on the hour wire. M. Messier has reported its position on the Chart of the path of the Comet of 1779.'

64. 12h 45m 51s (191d 27' 38") +22d 52' 31"

(March 1, 1780) `Nebula discovered in Coma Berenices, which is about half as apparent as that which is below the hair [M53]. M. Messier has reported its position on the Chart of the Comet of 1779. Reviewed on March 17, 1781.'

65. 11h 07m 24s (166d 50' 54") +14d 16' 08"

(March 1, 1780) `Nebula discovered in Leo: It is very faint and contains no star.'

66. 11h 08m 47s (167d 11' 39") +14d 12' 21"

(March 1, 1780) `Nebula discovered in Leo; its light is very faint & it is very close to the preceding [M65]: They both appear in the same field [of view] in the refractor. The comet of 1773 & 1774 has passed between these two nebulae on November 1 to 2, 1773. M. Messier didn't see them at that time, no doubt, because of the light of the comet.'

67. 8h 36m 28s (129d 06' 57") +12d 36' 38"

(April 6, 1780) `Cluster of small stars with nebulosity, below the southern claw of Cancer. The position determined from the star Alpha [Cancri].'

68. 12h 27m 38s (186d 54' 33") -25d 30' 20"

[Error/misprint corrected by hand from Northern to Southern declination - also see correction below]
(April 9, 1780) `Nebula without stars below Corvus & Hydra; it is very faint, very difficult to see with the refractors; near it is star of sixth magnitude.'

In the Connoissance des Temps for 1783, there is an appendix of errors to previous and this same volume, where on page 408 is written:

Catalog of Nebulae, page 226.

Page 226, the 4th line, for 25d 35' 40" read 25d 55' 40".    [M 4]
     228      1st           32. 10.  3.      32. 10. 34.     [M 6]
     236      2nd           27. 11. 57.      37. 11. 57.     [M29]
     240      6th           15.  7. 22.       8. 27. 22.     [M44]
     244      2nd           19. 42. 22.      13.  2.  2.     [M53]
     246      4th           18. 50. 44.      12. 10. 44.     [M61]
     248      7th           North            South           [M68]

  274d 11' 46" in right ascension & 32d 31' 45" in southern declination [M69]
  277. 13. 16. .................... 32. 31.  7. [M70]

References:

• Charles Messier, 1780. Catalogue des Nébuleuses & des amas d'Étoiles. Connoissance des Temps for 1783 (published 1780), pp. 225-249 [Bibcode: 1780CdT..1783..225M].
• Charles Messier, 1780a. Errata important, .., Année 1783. Catalogue des Nébuleuses, page 225. Announce of the discovery of the Messsier objects M69 and M70. Connoissance des Temps for 1783 (published 1780), p. 408 [Bibcode: 1780CdT..1783..408M].

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