NGC 57

NGC 57
NGC 57 imaged by SDSS
Observation data (J2000 epoch)
Constellation	Pisces [1]
Right ascension	00h 15m 30.9132s [2]
Declination	+17° 19′ 42.307″ [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, MCG +03-01-031, PGC 1037, CGCG 456-046 [2]

NGC 57 is an elliptical galaxy in the constellation Pisces. ^[1] It was discovered by German-British astronomer William Herschel on 8 October 1784. ^[4]

SN 2010dq imaged on 3 September 2010

Supernovae

Three supernovae have been observed in NGC 57:

• SN 2010dq (type Ia, mag. 17) was discovered by Kōichi Itagaki on 3 June 2010. It was 17" west and 1" south of the center of NGC 57 at coordinates 00^h 15^m 29.70^s, +17° 19′ 41.0″. ^{[5] [6]}
• 2011fp (type Ia, mag. 17.9) was discovered by Kōichi Itagaki on 29 August 2011. ^{[7] [8]}
• SN 2020mza (mag 19.9) was discovered on 18 June 2020. ^[9]

See also

• Elliptical galaxy
• List of NGC objects (1–1000)
• Pisces (constellation)

NGC 57 (2MASS)

References

1. "Revised NGC Data for NGC 57". spider.seds.org. Retrieved 2017-12-18.
2. "Results for object NGC 0057". NASA/IPAC Extragalactic Database. NASA and Caltech . Retrieved 2006-12-22.
3. An object's distance from Earth can be determined using Hubble's law: v=H_o 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=H_o
4. "New General Catalog Objects: NGC 50 - 99". cseligman.com. Retrieved 2017-12-18.
5. Nakano, S. (2010). "Supernova 2010dq in NGC 57". Central Bureau Electronic Telegrams (2303): 1. Bibcode:2010CBET.2303....1N.
6. "SN 2010dq". Transient Name Server. IAU . Retrieved 21 December 2024.
7. Nakano, S.; Nishimura, K.; Yamaoka, H.; Noguchi, T.; Magill, L.; Kotak, R.; Smartt, S.; Pastorello, A.; Maguire, K. (2011). "Supernova 2011fp in NGC 57 = PSN J00152561+1719119". Central Bureau Electronic Telegrams (2820): 1. Bibcode:2011CBET.2820....1N.
8. "SN 2011fp". Transient Name Server. IAU . Retrieved 21 December 2024.
9. "2020mza | Transient Name Server". www.wis-tns.org. Retrieved 2025-01-02.

External links

• NGC 57 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• Discovery image of SN 2010dq ^{[ permanent dead link ]} (2010-06-03) / Wikisky DSS2 zoom-in of same region