NGC 2857

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NGC 2857
NGC2857 - SDSS DR14.jpg
SDSS image of NGC 2857
Observation data (J2000 epoch)
Constellation Ursa Major [1]
Right ascension 09h 24m 37.698s [2]
Declination +49° 21′ 25.69″ [2]
Redshift 0.016301 ± 0.000023 [3]
Heliocentric radial velocity 4887 ± 7 km/s [3]
Galactocentric velocity4917 ± 7 km/s [3]
Distance 69.050 ± 00  kpc (225.21 ± 0.00  kly)h−1
0.73 [3]
Apparent magnitude  (V)12.27 [2]
Apparent magnitude  (B)12.90 [2]
Absolute magnitude  (V)-21.92 ± 0.22 [3]
Characteristics
Type SA(s)c [3]
Size125,000 [1]
Apparent size  (V)1.70′ × 1.43′ [3]
Other designations
NGC 2857, Arp 1, APG 1, PGC 26666, UGC 5000

NGC 2857 (also known as Arp 1 and PGC 26666) is a spiral galaxy in the constellation Ursa Major. It was discovered on January 9, 1856, by R. J. Mitchell. [1]

Contents

NGC 2857 is the first object in Halton Arp's Atlas of Peculiar Galaxies, and one of six Arp objects in the 'Low Surface Brightness Galaxies' section. The other five low surface brightness galaxies are Arp 2 (UGC 10310), Arp 3, Arp 4, Arp 5 (NGC 3664), and Arp 6 (NGC 2537). [4]

Supernova

One supernova has been observed in NGC 2857:

References

  1. 1 2 3 Seligman, Courtney. "New General Catalog Objects: NGC 2850 - 2899" . Retrieved 2015-11-29.
  2. 1 2 3 4 "SIMBAD Astronomical Database". Results for NGC 2857. Retrieved 2015-11-29.
  3. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 2857. Archived from the original on 1997-12-22. Retrieved 2015-11-29.
  4. ↑ Arp, Halton (1966). "Atlas of Peculiar Galaxies" . Retrieved 2015-11-25.
  5. ↑ Lipunov, V.; Shumkov, V.; Denisenko, D.; Gorbovskoy, E.; Elenin, L.; Molotov, I.; Camilleri, P.; Marion, G. H.; Vinko, J. (2012). "Supernova 2012fg in NGC 2857 = PSN J09243795+4921320". Central Bureau Electronic Telegrams (3253): 1. Bibcode:2012CBET.3253....1L.
  6. ↑ "SN 2012fg". Transient Name Server. IAU . Retrieved 17 December 2025.
  7. ↑ Pruzginskaya, M.; et al. (2012). "Folow up B,V,R,I photometry bright SN 2012fg in NGC 2857 discovered by MASTER". The Astronomer's Telegram. 4489: 1. Bibcode:2012ATel.4489....1P.
  8. ↑ Shumkov, V.; et al. (2012). "Bright PSN in NGC2857". The Astronomer's Telegram. 4459: 1. Bibcode:2012ATel.4459....1S.
  9. ↑ Cellier-Holzem, F.; et al. (2012). "Spectroscopic Observation of the Bright PSN in NGC2857 by the Nearby Supernova Factory II". The Astronomer's Telegram. 4466: 1. Bibcode:2012ATel.4466....1C.
  10. ↑ Fabrika, S.; Valeev, A.; Fatkhullin, T.; Sholukhova, O.; Vinokurov, A. (2012). "Spectrum of bright SN 2012fg in NGC 2857". The Astronomer's Telegram. 4496: 1. Bibcode:2012ATel.4496....1F.
  11. ↑ Fabrika, S.; Fatkhullin, T.; Valeev, A.; Moskvitin, A.; Vinokurov, A.; Sholukhova, O. (2012). "Spectrum change of bright SN 2012fg in NGC 2857". The Astronomer's Telegram. 4520: 1. Bibcode:2012ATel.4520....1F.


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