Astronomy:NGC 57
From HandWiki
| 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] |
| Helio 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[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]
Supernovae
Two supernovae have been observed in NGC 57:
- SN 2010dq (Type Ia, mag. 17.3) was discovered by Kōichi Itagaki on 3 June 2010. It was 17" west and 1" south of the center of NGC 57 at coordinates 00h 15m 29.70s, +17° 19′ 41.0″.[5][6]
- SN 2011fp (Type Ia, mag. 17.9) was discovered by Kōichi Itagaki on 29 August 2011.[7][8]
See also
References
- ↑ 1.0 1.1 1.2 1.3 "Revised NGC Data for NGC 57". http://spider.seds.org/ngc/revngcic.cgi?NGC57.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "Results for object NGC 0057". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+0057.
- ↑ 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" (in en-US). http://cseligman.com/text/atlas/ngc0a.htm#57.
- ↑ Nakano, S. (2010). "Supernova 2010dq in NGC 57". Central Bureau Electronic Telegrams (2303): 1. Bibcode: 2010CBET.2303....1N. http://www.cbat.eps.harvard.edu/iau/cbet/002300/CBET002303.txt.
- ↑ "SN 2010dq". IAU. https://www.wis-tns.org/object/2010dq.
- ↑ Nakano, S.; Nishimura, K.; Yamaoka, H.; Noguchi, T.; Magill, L.; Kotak, R.; Smartt, S.; Pastorello, A. et al. (2011). "Supernova 2011fp in NGC 57 = PSN J00152561+1719119". Central Bureau Electronic Telegrams (2820): 1. Bibcode: 2011CBET.2820....1N. http://www.cbat.eps.harvard.edu/cbet/002800/CBET002820.txt.
- ↑ "SN 2011fp". IAU. https://www.wis-tns.org/object/2011fp.
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 (2010-06-03) / Wikisky DSS2 zoom-in of same region
Coordinates: 
00h 15m 30.9132s, +17° 19′ 42.307″
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