NGC 522

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NGC 522
NGC522 - SDSS DR14.jpg
NGC 522 as seen on SDSS
Observation data (J2000 [1] epoch)
Constellation Pisces [2]
Right ascension 01h 24m 45.9s [2]
Declination +09° 59′ 42″ [2]
Redshift (0.009256 ± 0.000160) [1]
Helio radial velocity (2762 ± 48) km/s [1]
Distance 122 Mly [3]
Apparent magnitude  (V)13.2 [2]
Apparent magnitude  (B)14.0 [2]
Characteristics
Type Sbc [2]
Apparent size  (V)2.8' × 0.5' [2]
Other designations
PGC 5218, UGC 970, GC 305, MGC +02-04-038, 2MASS J01244585+0959406, IRAS 01221+0944 [1] [4]

NGC 522, also occasionally referred to as PGC 5218 or UGC 970, is a spiral galaxy located approximately 122 million light-years from the Solar System [3] in the constellation Pisces. [2] It was discovered on 25 September 1862 by astronomer Heinrich Louis d'Arrest. [4]

Contents

Observation history

D'Arrest discovered NGC 522 using his 11-inch refractor telescope at Copenhagen. He located the galaxy's position with a total of two observations. As the position matches both UGC 962 and PGC 5190, the objects are generally referred to as synonymous. [5] NGC 522 was later catalogued by John Louis Emil Dreyer in the New General Catalogue, where the galaxy was described as "extremely faint, pretty large, irregular figure, perhaps cluster plus nebula". [4]

Description

The galaxy can be observed edge-on from Earth, thus appearing very elongated. It can be classified as spiral galaxy of type Sbc using the Hubble Sequence. [2] The object's distance of roughly 120 million light-years from the Solar System can be estimated using its redshift and Hubble's law. [3]

See also

NGC 522 (SDSS) NGC 0522 SDSS.jpg
NGC 522 (SDSS)

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References

  1. 1 2 3 4 "NGC 522". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2017-12-09.
  2. 1 2 3 4 5 6 7 8 9 "Revised NGC Data for NGC 522". spider.seds.org. Retrieved 2017-10-05.
  3. 1 2 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. 1 2 3 "New General Catalog Objects: NGC 500 - 549". cseligman.com. Retrieved 2017-10-16.
  5. ↑ "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm".


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