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NGC 57

NGC 57
NGC 57
NGC 57 as seen on SDSS
Observation data (J2000 epoch)
ConstellationPisces[1]
Right ascension00h 15m 30.9s[2]
Declination+17° 19′ 42″[2]
Redshift0.018146[2]
Heliocentric radial velocity5,440 ± 22 km/s[2]
Distance243 Mly[3]
Apparent magnitude (V)11.8[1]
Apparent magnitude (B)12.8[1]
Characteristics
TypeE[2]
Apparent size (V)2.2′ × 1.9′[2]
Other designations
UGC 145,[2] PGC 1037[2]

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

SN 2010dq

Supernova 2010dq as seen on 2010-09-03 (announced 2010-06-03)

On June 3, 2010, Koichi Itagaki detected a magnitude 17 supernova 17" west and 1" south of the center of NGC 57 at coordinates 00 15 29.70 +17 19 41.0: Itagaki detected the August 29th 2011 an other supernova in NGC 57, 2011fp, with magnitude 17,9.[5][6]

See also

NGC 57 (2MASS)

References

  1. ^ a b c d "Revised NGC Data for NGC 57". spider.seds.org. Retrieved 2017-12-18.
  2. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 57. Retrieved 2006-12-22.
  3. ^ 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
  4. ^ "New General Catalog Objects: NGC 50 - 99". cseligman.com. Retrieved 2017-12-18.
  5. ^ David Bishop. "Latest Supernovae". supernovae.net (International Supernovae Network). Retrieved 2010-06-04.
  6. ^ Cbet 2820 del 20 settembre 2011
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