NGC 502

NGC 502
NGC 502
SDSS view of NGC 502
Observation data (J2000 epoch)
ConstellationPisces
Right ascension01h 22m 55.5s
Declination+09° 02′ 57″
Redshift0.008279 ± 0.000163
Heliocentric radial velocity(2472 ± 49) km/s
Distance113 Mly
Apparent magnitude (V)12.7
Apparent magnitude (B)13.7
Magnitude (J)10.721
Magnitude (H)10.011
Magnitude (K)9.737
Characteristics
TypeS0
Apparent size (V)1.1' × 1.0'
Other designations
GC 293, 2MASS J01225553+0902570, UGC 922, PGC 5034

NGC 502, also occasionally referred to as PGC 5034 or UGC 922, is a lenticular galaxy in the constellation Pisces. It is located approximately 113 million light-years from the Solar System and was discovered on 25 September 1862 by German astronomer Heinrich Louis d'Arrest. When the Morphological Catalogue of Galaxies was published between 1962 and 1974, the identifications of NGC 502 and NGC 505 were reversed. In reality, NGC 502 is equal to MGC +01-04-041 and not MCG +01-04-043 as noted in the catalogue.

Observation history

Arrest discovered NGC 502 using an 11" reflecting telescope in Copenhagen. His position, which he measured on four separate nights, matches with both UGC 922 and PGC 5034. John Louis Emil Dreyer, creator of the New General Catalogue, described the galaxy as "considerably bright, small, round, brighter middle and nucleus".

NGC 502 (SDSS)

Galaxy Group and Environment

NGC 502 is part of a Galaxy group known as LGG 23. It consists of at least 9 members, namely NGC 489, NGC 516 and NGC 524. LGG 20 lies in the same field of view as NGC 502.


See also

References

  1. 1 2 3 4 "NGC 502". Retrieved 2017-12-09.
  2. 1 2 3 4 5 6 "Revised NGC Data for NGC 502". spider.seds.org. Retrieved 2017-10-05.
  3. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-10-05.
  4. 1 2 An object's distance from Earth can be determined using Hubble's law: v=Ho is Hubble's constant (70±5 (km/s)/Mpc). The relative uncertainty Δd/d divided by the distance is equal to the sum of the relative uncertainties of the velocity and v=Ho
  5. 1 2 3 "New General Catalog Objects: NGC 500 - 549". cseligman.com. Retrieved 2017-10-16.
  6. 1 2 "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm".
  7. ↑ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy & Astrophysics Supplement Series. 100: 47–90. Bibcode:1993A&AS..100...47G.