| NGC 57 | |
|---|---|
 NGC 57 as seen on SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Pisces[1] |
| Right ascension | 00h 15m 30.9s[2] |
| Declination | +17° 19′ 42″[2] |
| Redshift | 0.018146[2] |
| Heliocentric radial velocity | 5,440 ± 22 km/s[2] |
| Distance | 243 Mly[3] |
| Apparent magnitude (V) | 11.8[1] |
| Apparent magnitude (B) | 12.8[1] |
| Characteristics | |
| Type | E[2] |
| Apparent size (V) | 2.2′ × 1.9′[2] |
| Other designations | |
| UGC 145,[2] PGC 1037[2] | |
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NGC 57 is an elliptical galaxy in the constellation Pisces.[1] It was discovered on 8 October 1784 by astronomer William Herschel.[4]
- ^ a b c d "Revised NGC Data for NGC 57". spider.seds.org. Retrieved 2017-12-18.
- ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 57. Retrieved 2006-12-22.
- ^ 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
- ^ "New General Catalog Objects: NGC 50 - 99". cseligman.com. Retrieved 2017-12-18.