NGC 5502

NGC 5502
SDSS image of NGC 5502
Observation data (J2000 epoch)
ConstellationUrsa Major
Right ascension14h 09m 33.9s[1]
Declination+60° 24′ 34.3″[1]
Redshift0.02940[1]
Heliocentric radial velocity8684 km/s[1]
Galactocentric velocity8949 km/s[2]
Distance400 ± 28 Mly
(122.6 ± 8.6 Mpc)[2]
Apparent magnitude (V)15.9[2]
Absolute magnitude (V)-19.5[nb 1]
Characteristics
TypeSa D[2]
Apparent size (V)0.63' x 0.29'[2]
Other designations
MCG +10-20-077, PGC 50508[1][3]

NGC 5502 (also known as NGC 5503) is a spiral galaxy in the constellation of Ursa Major,[3][4] registered in New General Catalogue (NGC).[1]

Observation history[edit]

NGC 5502 was discovered by Edward Swift (father) on 9 May 1885 and later double listed by Lewis Swift (son) two days later on 11 May 1885 as NGC 5503.[3] They gave descriptions "between two stars, one a wide double" and "forms with two stars a right triangle" respectively.[4] In the New General Catalogue, John Louis Emil Dreyer described the galaxy as "most extremely faint, very small, round, very difficult, 2 stars near".[3] The apparent difference in positions (2 arcmin) could have caused the confusions between NGC 5502 and NGC 5503.[3]

Notes[edit]

  1. ^ Calculated from Galactocentric GSR Distance modulus[2]

References[edit]

  1. ^ a b c d e f "NGC 5502". SIMBAD. Archived from the original on 29 November 2022. Retrieved 30 November 2022.
  2. ^ a b c d e f "Results for object NGC 5502". NASA/IPAC Extragalactic Database. Retrieved 4 December 2022.
  3. ^ a b c d e Seligman, Courtney. "NGC 5502 (= PGC 50508 = NGC 5503)". Seligman website. Retrieved 5 December 2022.
  4. ^ a b "NGC 5502". Deep Sky Observer's Companion – the online database. Archived from the original on 11 March 2016. Retrieved 6 December 2022.
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