NGC 1620 explained

NGC 1620
Constellation Name:	Eridanus
Epoch:	J2000
Type:	SAB(rs)bc^[1]
Dist Ly:	NaNMpc
Z:	0.011715
H Radial V:	3512 ± 1 km/s
Appmag V:	12.3
Size V:	2.9' x 1.0'
Size:	~37.11kpc (estimated)

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

Two supernovae have been observed in NGC1620: SN2009K (typeIIb, mag.14.9)^[2] and SN2023crx (typeIb, mag.18.6).^[3]

NGC 1589 Group

According to A.M. Garcia, the galaxy NGC1620 is part of the NGC1589 Group (also known as LGG117) 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

• List of NGC objects (1001–2000)

Notes and References

1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 1620 . 24 July 2024.
2. https://www.wis-tns.org/object/2009K Transient Name Server entry for SN2009K.
3. https://www.wis-tns.org/object/2023crx Transient Name Server entry for SN2023crx.
4. 1993A&AS..100...47G . General study of group membership. II. Determination of nearby groups . Garcia . A. M. . Astronomy and Astrophysics Supplement Series . 1993 . 100 . 47.