| NGC 501 | |
|---|---|
 SDSS view of NGC 501 | |
| Observation data (J2000[1] epoch) | |
| Constellation | Pisces[2] |
| Right ascension | 01h 23m 22.4s[3] |
| Declination | +33° 25′ 59″[3] |
| Redshift | 0.016561 ± 0.000227[1] |
| Heliocentric radial velocity | (4924 ± 68) km/s[1] |
| Distance | 224 Mly[4] |
| Apparent magnitude (V) | 14.5[2] |
| Apparent magnitude (B) | 15.5[2] |
| Characteristics | |
| Type | E0[2] |
| Apparent size (V) | 0.5' × 0.5'[2] |
| Other designations | |
| PGC 5082, GC 284, 2MASS J01232240+3325582 [1][5] | |
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NGC 501, also occasionally referred to as PGC 5082 or GC 284, is an elliptical galaxy in the constellation Pisces.[2] It is located approximately 224 million light-years from the Solar System[4] and was discovered on 28 October 1856 by Irish astronomer R. J. Mitchell.[5]
- ^ a b c d "NGC 501". Retrieved 2017-12-09.
- ^ a b c d e f "Revised NGC Data for NGC 501". spider.seds.org. Retrieved 2017-10-05.
- ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-10-05.
- ^ a b 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
- ^ a b "New General Catalog Objects: NGC 500 - 549". cseligman.com. Retrieved 2017-10-16.