NGC 1620

Galaxy in the constellation Eridanus From Wikipedia, the free encyclopedia

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 166.2 ± 11.6 Mly (50.97 ± 3.57 Mpc).[1] However, 20 non-redshift measurements give a closer distance of 130.02 ± 3.26 Mly (39.865 ± 1.001 Mpc).[2] It was discovered by German-British astronomer William Herschel on 1 January 1786.

Right ascension04h 36m 37.3764s[1]
Declination−00° 08 36.81[1]
Redshift0.011715[1]
Quick facts Observation data (J2000 epoch), Constellation ...
NGC 1620
NGC 1620 imaged by SDSS
Observation data (J2000 epoch)
ConstellationEridanus
Right ascension04h 36m 37.3764s[1]
Declination−00° 08 36.81[1]
Redshift0.011715[1]
Heliocentric radial velocity3512 ± 1 km/s[1]
Distance166.2 ± 11.6 Mly (50.97 ± 3.57 Mpc)[1]
Group or clusterNGC 1589 Group (LGG 117)
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′ × 1.0′[1]
Other designations
IRAS 04340-0014, 2MASX J04363734-0008370, UGC 3103, MCG +00-12-052, PGC 15638[1]
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Supernovae

Two supernovae have been observed in NGC 1620:

  • SN 2009K (Type IIb, mag. 14.9) was discovered by CHASE (CHilean Automatic Supernovas sEarch) on 14 January 2009.[3][4]
  • SN 2023crx (Type Ib, mag. 18.57) was discovered by the Gaia Photometric Science Alerts on 1 March 2023.[5]

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 [fr], NGC 1587 [fr], NGC 1588 [fr], NGC 1589, UGC 3054 [d], UGC 3058 [d], UGC 3072 [d] and UGC 3080 [d].[6]

See also

References

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