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NGC 496

NGC 496
NGC 496
SDSS view of NGC 496
Observation data (J2000[1] epoch)
ConstellationPisces[2]
Right ascension01h 23m 11.6s[3]
Declination+33° 31′ 45″[3]
Redshift+0.020258 ± 0.000093[1]
Heliocentric radial velocity(6011.7 ± 27.8) km/s[1]
Distance250 Mly[4]
Apparent magnitude (V)13.4[2]
Characteristics
TypeSbc[2]
Apparent size (V)1.6' × 0.9'[2]
Other designations
PGC 5061, UGC 927, GC 288, MCG 5-4-36, 2MASS J01231161+3331452, H 3.157, IRAS 01203+3316, CGCG 502-60, KUG 0120+332A[2][1][5]

NGC 496, also occasionally referred to as PGC 5037, UGC 927 or GC 288, is a spiral galaxy in the constellation Pisces.[2] It is located approximately 250 million light-years from the Solar System[4] and was discovered on 12 September, 1784 by astronomer William Herschel.[5]

Observation history

The object was discovered by Herschel along with NGC 495 and NGC 499. He initially described the discovery as "Three [NGC 496 along with NGC 495 and 499], eS and F, forming a triangle.". As he observed the trio again the next night, he was able to make out more detail: "Three, forming a [right triangle]; the [right angle] to the south NGC 499, the short leg preceding [NGC 496], the long towards the north [NGC 495]. Those in the legs [NGC 496 and 495] the faintest imaginable; that at the rectangle [NGC 499] a deal larger and brighter, but still very faint."[6]

NGC 496 was later also observed by Bindon Blood Stoney.[5] This position is also noted in the New General Catalogue.[6]

See also

References

  1. ^ a b c d "NGC 496". Retrieved 2017-11-07.
  2. ^ a b c d e f "Revised NGC Data for NGC 496". spider.seds.org. Retrieved 2017-10-05.
  3. ^ a b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-11-07.
  4. ^ 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
  5. ^ a b c "New General Catalog Objects: NGC 450 - 499". cseligman.com. Retrieved 2017-11-07.
  6. ^ a b "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm". Astronomy Mall. Retrieved 2017-11-07.
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