NGC 7427

NGC 7427
The lenticular galaxy NGC 7427
Observation data (J2000 epoch)
ConstellationPegasus
Right ascension22h 57m 09.9277s[1]
Declination+08° 30′ 20.435″[1]
Redshift0.032376[1]
Heliocentric radial velocity9706 ± 24 km/s[1]
Distance449.1 ± 31.5 Mly (137.70 ± 9.66 Mpc)[1]
Apparent magnitude (V)15.1[1]
Characteristics
TypeSO[1]
Size~97,100 ly (29.76 kpc) (estimated)[1]
Apparent size (V)0.7' x 0.7'[1]
Other designations
2MASX J22570990+0830200, MCG +01-58-016, Mrk 521, PGC 70091, CGCG 405-018[1]

NGC 7427 is a lenticular galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 9336 ± 35 km/s, which corresponds to a Hubble distance of 137.70 ± 9.66 Mpc (∼449 million light-years).[1] It was discovered by Russian astronomer Otto Wilhelm von Struve on 22 November 1865.[2]

Supernovae

Two supernovae have been observed in NGC 7427:

  • SN 2019uzd (type Ia, mag 18.94) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 16 November 2019.[3]
  • SN 2023uma (type Ia, mag 18.13) was discovered by the Zwicky Transient Facility on 9 October 2023.[4]

See also

References

  1. ^ a b c d e f g h i j k "Results for NGC 7427". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 3 August 2024.
  2. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 7427". Celestial Atlas. Retrieved 15 December 2024.
  3. ^ "SN 2019uzd". Transient Name Server. IAU. Retrieved 15 December 2024.
  4. ^ "SN 2023uma". Transient Name Server. IAU. Retrieved 15 December 2024.