NGC 797

NGC 797
NGC 797 imaged by Pan-STARRS
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension02h 03m 27.9624s
Declination+38° 07′ 00.823″
Redshift0.018860±0.0000130
Heliocentric radial velocity5,654±4 km/s
Distance369.64 ± 4.35 Mly (113.333 ± 1.333 Mpc)
Group or clusterCGPG 0200.4+3753
Apparent magnitude (V)13.1
Characteristics
TypeSAB(s)a
Size~210,400 ly (64.51 kpc) (estimated)
Apparent size (V)1.9′ × 1.4′
Other designations
CGPG 0200.4+3753 NED02, NGC 797 NED02, UGC 1541, MCG +06-05-078 NED02, PGC 7832, CGCG 522-105 NED02, VV 428 NED02

NGC 797 (also known as NGC 797 NED02) is a barred spiral galaxy in the constellation of Andromeda. Its velocity with respect to the cosmic microwave background is 5,414±17 km/s, which corresponds to a Hubble distance of 260.4 ± 18.3 Mly (79.85 ± 5.60 Mpc). However, three non-redshift measurements give a much farther mean distance of 369.64 ± 4.35 Mly (113.333 ± 1.333 Mpc). It was discovered by German-British astronomer William Herschel on 21 September 1786.

In 1971, Fritz Zwicky and his daughter, Margrit A. Zwicky, published Catalogue of Selected Compact Galaxies and of Post-Eruptive Galaxies, which showed that NGC 797 has an elliptical compact companion galaxy at the tip of its southwest spiral arm, and catalogued the galaxy pair as CGPG 0200.4+3753. The companion galaxy is catalogued as NGC 0797 NED01 and PGC 212899, among other designations.

NGC 797 and NGC 801 form a galaxy pair, and the distance between the two is about 150 kiloparsecs.

Supernova

One supernova has been observed in NGC 797:

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 0797 NED02". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 31 July 2025.
  2. ↑ "Distance Results for NGC 0797 NED02". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 31 July 2025.
  3. ↑ Herschel, W. (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London. 79: 212–255. Bibcode:1789RSPT...79..212H. doi:10.1098/rstl.1789.0021.
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 797". Celestial Atlas. Retrieved 31 July 2025.
  5. ↑ Zwicky, Fritz; Zwicky, Margrit A. (1971). Catalogue of selected compact galaxies and of post-eruptive galaxies. Bibcode:1971cscg.book.....Z.
  6. ↑ Van Moorsel, G. A. (1983). "Neutral hydrogen observations of double spiral galaxies. III. NGC 3504/3512, NGC 4085/4088, IC 65/UGC 622, NGC 797/801". Astronomy and Astrophysics Supplement Series. 54: 1. Bibcode:1983A&AS...54....1V.
  7. ↑ "SN 2025pel". Transient Name Server. IAU. Retrieved 31 July 2025.