Arp 273

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Arp 273
UGC 1810 and UGC 1813 in Arp 273 (captured by the Hubble Space Telescope).jpg
Image taken by the NASA/ESA Hubble Space Telescope shows Arp 273, a pair of interacting galaxies.
Observation data (J2000 epoch)
Right ascension 02h 21m 28.703s[1]
Declination+39° 22′ 32.65″[1]
Distance300 million ly
Apparent magnitude (V)13.7[2]
Other designations
UGC 1810, PGC 8961, VV 323, Z 523-28, Arp 273, 2MASX J02212870+3922326, VV 323a, CGPG 0218.4+3909, MCG+06-06-023, ZW V 223,KPG 64a, UZC J022128.6+392231, Z 0218.4+3909[1]

Arp 273 is a pair of interacting galaxies, 300 million light years away in the constellation Andromeda. It was first described in the Atlas of Peculiar Galaxies, compiled by Halton Arp in 1966.[3] The larger of the spiral galaxies, known as UGC 1810, is about five times more massive than the smaller galaxy.[4] It has a disc that is tidally distorted into a rose-like shape by the gravitational pull of the companion galaxy below it, known as UGC 1813. The smaller galaxy shows distinct signs of active star formation at its nucleus,[5] and "it is thought that the smaller galaxy has actually passed through the larger one."[6]

Arp 273 zoom sequence.


  1. ^ a b c "SIMBAD Astronomical Database". Results for Arp 273. Retrieved 2011-04-20.
  2. ^ "NASA/IPAC Extragalactic Database". Retrieved 2018-06-27.
  3. ^ "Interacting galaxies Arp 273". National Optical Astronomy Observatory. Retrieved 2011-04-21.
  4. ^ Usher, Oli; Villard, Ray (2011-04-20). "A galactic rose highlights Hubble's 21st anniversary". Archived from the original on 16 May 2011. Retrieved 2011-04-21.
  5. ^ "NASA's Hubble Celebrates 21st Anniversary with "Rose" of Galaxies". HubbleSite. 2011-04-20. Retrieved 2011-04-21.
  6. ^ "A galactic rose highlights Hubble's 21st anniversary". 2011-04-21. Retrieved 2011-04-21.

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