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NGC 512, also occasionally referred to as PGC 5132 or UGC 944, is a spiral galaxy in the constellation Andromeda.[2] It is located approximately 217 million light-years from the Solar System[4] and was discovered on 17 November 1827 by astronomer John Herschel.[5]

NGC 512
SDSS view of NGC 512
Observation data (J2000[1] epoch)
ConstellationAndromeda[2]
Right ascension01h 23m 59.8s[3]
Declination+33° 23′ 59.8″[3]
Redshift0.016175 ± 0.000107[1]
Helio radial velocity(4810 ± 32) km/s[1]
Distance217 Mly[4]
Apparent magnitude (V)13.3[2]
Apparent magnitude (B)14.1[2]
Characteristics
TypeSab[2]
Apparent size (V)1.6' × 0.4'[2]
Other designations
PGC 5132, UGC 944, GC 296, MGC +06-04-013, 2MASS J01235976+3354281, IRAS F01211+3338[1][5]

Observation history


Herschel's discovery is based on a single observation. He described the object as "very faint, very small". The position is just 23" from UGC 944, thus the two objects are generally regarded as equivalent.[6] John Louis Emil Dreyer, creator of the New General Catalogue, added the object to the catalogue, adopting Herschel's description.[5]


Description


The galaxy has an apparent size of 1.6 × 0.4 arcmins and appears very elongated. It has a recessional velocity of approximately 4810 kilometers per second. The distance of NGC 512 from the Solar System can be estimated using Hubble's law, which puts the object at roughly 220 million light-years from the Sun.[5]


See also



References


  1. "NGC 512". Retrieved 2017-12-09.
  2. "Revised NGC Data for NGC 512". spider.seds.org. Retrieved 2017-10-05.
  3. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-10-05.
  4. 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. "New General Catalog Objects: NGC 500 - 549". cseligman.com. Retrieved 2017-10-16.
  6. "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm".




На других языках

[de] NGC 512

NGC 512 ist eine Spiralgalaxie vom Hubble-Typ Sab im Sternbild Andromeda am Nordsternhimmel. Sie ist schätzungsweise 223 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 105.000 Lichtjahren. Im selben Himmelsareal befinden sich u. a. die Galaxien NGC 496, NGC 513, NGC 523, NGC 537.
- [en] NGC 512

[ru] NGC 512

NGC 512 (другие обозначения — UGC 944, MCG 6-4-13, ZWG 521.18, PGC 5132) — спиральная галактика[1] в созвездии Андромеда.


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