If you have undertaken, or participated in, a Messier Marathon, 2026 or earlier, if not already done so, pleae send me your or your group's results, or the link to your results page, for inclusion in our Messier Marathon Results page!
Deepsky enthusiasts can look for additional clusters, nebulae, and galaxies. While you can certainly pick and observe whatever you like, we also provide a list of additional deepsky objects to select from (also available with data).
It is always delightful to add to the Messier Marathon the observation of as many of the planets as possible. This year, only Jupiter and Uranus are in favoryble observing positions. Pluto is possible but perhaps difficult in southern Capricornus, while Mercury, Venus and Mars are in elongations quite close to the Sun so that only bright Veuns is easy in the evening, Mars and Mercury difficult in the morning. Saturn and Neptune come into conjunction close to the marathon dates and therefore, stay definitely impossible.
Some comets brighter than about mag 14.0 will be visible; we will list them below from various sources (e.g., Seiichi Yoshida's Visual Comet lists for the northern and southern hemisphere, Skyhound's Comet Chasing page, Fachgruppe Kometen list), and the BAA comet section:
Comet RA (2000.0) Dec mag Con RA (2000.0) Dec mag Con Comments
March 22, 2026 March 15, 2026
24P/Schaumasse 15 26 18.0 +05 05 08 11.3 Ser 15 28 35.8 +05 25 58 11.9 Ser
29P/Schwassmann- Wachmann 1 11 11 34.8 -02 26 33 15.6 Leo 11 14 34.2 -02 42 35 15.6 Leo Outbursts ~11m
88P/Howell 21 42 10.9 -16 29 06 14.5 Cap 21 17 44.6 -18 14 12 14.5 Cap El. 38 (Yoshida: 11m?)
235P/LINEAR 17 00 19.6 -16 35 23 16.2 Oph 16 52 22.7 -17 09 09 16.3 Oph Yoshida: 13m
240P/NEAT 04 43 20.3 +32 07 51 16.3 Aur 04 30 21.3 +31 10 20 16.2 Per Yoshida: 12m
C/2024 E1 (Wierzchos) 04 09 35.3 +05 56 43 9.2 Tau 04 09 35.3 +05 56 43 8.6 Eri
C/2025 L1 (ATLAS) 15 11 03.5 +18 49 41 14.4 Ser 15 28 18.9 +09 27 32 14.4 Ser
C/2025 R3 (PanSTARRS) 22 33 34.4 +19 05 01 12.3 Peg 22 29 28.4 +18 36 54 13.2 Peg El. 35/28 (Yoshida: 12m)
Note that occasionally comets become bright shortly (like Hyakutake in 1996,
Hale-Bopp in 1997, Ikeya-Zhang and Utsunomiya in 2002), so check back for
possible updates shortly before Marathon date. Also occasionally, a supernova
of brightness available to amateur telesopes may have flashed up be spottable
in time (like SN 1998S in NGC 3877, SN 2002ap in M74, SN 2006X in M100,
SN 2012aw in M95, and SN 2014J in M82 in their years of appearance).
This year, of the "first" four minor planets, (1) Ceres, (2) Pallas, and (4) Vesta will be close to the sun with Pallas and Vesta definitely and (1) Ceres practically almost impossible, only for faint (3) Juno will be a reasonable possibility to observe (in constellation Aquila). Positions, brightness and elongation for these objects are given here:
(1) Ceres 02 07 11.3 +07 30 06 9.1 Cet 01 57 26.8 +06 21 31 9.1 Psc El. 32/36 (2) Pallas 23 09 13.2 -00 24 13 10.1 Psc 22 59 55.3 -00 53 13 10.1 Psc El. 14/10 (3) Juno 19 49 41.3 -09 46 32 11.2 Aql 19 41 39.6 -10 19 59 11.2 Aql El. 64/59 (4) Vesta 22 33 03.1 -12 45 11 8.2 Aqr 22 19 30.7 -13 51 11 8.1 Aqr El. 26/23For convenience of interested observers, we also give the positions of the major planets here:
Mercury 22 38 19.5 -07 50 46 0.9 Aqr 22 42 00.6 -05 37 44 2.3 Aqr El. 23/14 Venus 01 11 09.0 +06 39 10 -3.9 Psc 00 39 22.5 +03 06 00 -3.9 Psc El. 18/16 Mars 23 06 06.4 -06 55 52 1.2 Aqr 22 45 34.8 -09 02 49 1.2 Aqr El. 16/15 Jupiter 07 04 54.0 +22 57 51 -2.3 Gem 07 04 10.6 +22 58 36 -2.3 Gem Saturn 00 17 49.6 -00 23 05 0.9 Psc 00 14 38.0 -00 43 48 1.0 Psc El. 9/4 (Conj March 25) Uranus 03 43 06.0 +19 32 26 5.8 Tau 03 42 05.4 +19 29 01 5.8 Tau Neptune 00 07 27.0 -00 37 00 7.8 Psc 00 06 28.7 -00 43 18 7.8 Psc El. 1/7 (Conj March 22) Pluto 20 32 06.5 -22 53 38 14.6 Cap 20 31 27.5 -22 54 41 14.6 Cap El. 56/50 Moon 02 24 45.2 +19 13 20 -7.6 Ari 20 29 13.1 -22 05 39 -8.2 Cap El. 39/50Moreover, meteors from various showers may occur, and depending on your location, you may be able to observe the International Space Station, ISS.
Please send me any results of your Messier Marathon for inclusion in our Messier Marathon Results page!
Last Modification: January 28, 2026