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 . However, 20 non-redshift measurements give a closer distance of . It was discovered by German-British astronomer William Herschel on 1 January 1786.
Supernovae Two supernovae have been observed in NGC1620: SN2009K (TypeIIb, mag.14.9) was discovered by CHASE (CHilean Automatic Supernovas sEarch) on 14 January 2009. SN2023crx (TypeIb, mag.18.57) was discovered by the Gaia Photometric Science Alerts on 1 March 2023.
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 1589, , , and .
See also List of NGC objects (1001–2000)
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