NGC 1620

NGC 1620
The spiral galaxy NGC 1620.
Observation data (J2000 epoch)
ConstellationEridanus
Right ascension04h 36m 37.35s[1]
Declination−00° 08′ 37.0″[1]
Redshift0.011715[1]
Heliocentric radial velocity3512 ± 1 km/s[1]
Distance166.2 ± 11.6 Mly (50.97 ± 3.57 Mpc)[1]
Apparent magnitude (V)12.3[1]
Characteristics
TypeSAB(rs)bc[1]
Size~121,000 ly (37.11 kpc) (estimated)[1]
Apparent size (V)2.9' x 1.0'[1]
Other designations
IRAS 04340-0014, 2MASX J04363734-0008370, UGC 3103, MCG +00-12-052, PGC 15638[1]

NGC 1620 is an intermediate spiral galaxy in the constellation of Eridanus. Its velocity with respect to the cosmic microwave background is 3,455 ± 4 km/s, which corresponds to a Hubble distance of 51.0 ± 3.6 Mpc Mpc (∼166 million light-years).[1] It was discovered by German-British astronomer William Herschel on 1 January 1786.

Two supernovae have been observed in NGC 1620: SN 2009K (type IIb, mag. 14.9)[2] and SN 2023crx (type Ib, mag. 18.6).[3]

NGC 1589 Group

According to A.M. Garcia, the galaxy NGC 1620 is part of the NGC 1589 Group (also known as LGG 117) that includes at least 8 other galaxies: NGC 1586, NGC 1587, NGC 1588, NGC 1589, UGC 3054, UGC 3058, UGC 3072 and UGC 3080.[4]

See also

References

  1. ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 1620. Retrieved 24 July 2024.
  2. ^ Transient Name Server entry for SN 2009K. Retrieved 24 July 2024.
  3. ^ Transient Name Server entry for SN 2023crx. Retrieved 24 July 2024.
  4. ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.