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NGC 515 - Wikipedia

Coordinates:

01^h 24^m 38.6^s, +33° 28′ 22″

From Wikipedia, the free encyclopedia

NGC 515
NGC 515 and NGC 517 as seen on SDSS
Observation data (J2000^[1] epoch)
Constellation	Pisces^[2]
Right ascension	01^h 24^m 38.6^s^[3]
Declination	+33° 28′ 22″^[3]
Redshift	0.01700 ± 0.00007^[1]
Heliocentric radial velocity	(5053 ± 21) km/s^[1]
Distance	228 Mly^[4]
Apparent magnitude (V)	13.1^[2]
Apparent magnitude (B)	14.1^[2]
Characteristics
Type	S0^[2]
Apparent size (V)	1.4' × 1.1'^[2]
Other designations
PGC 5201, UGC 956, GC 299, MGC +05-04-052, 2MASS J01243853+3328214, h 113^[1]^[5]

NGC 515, also occasionally referred to as PGC 5201 or UGC 956, is a lenticular galaxy located approximately 228 million light-years from the Solar System^[4] in the constellation Pisces.^[2] It was discovered on 13 September 1784 by astronomer William Herschel.^[5]

Observation history

Herschel discovered the object along with NGC 517 using Beta Andromedae as a reference star. He described his discovery as "two, both stellar", indicating his misidentification of the object as a star. The position noted for NGC 515 is just 35 seconds east of UGC 956, thus the two entries are generally thought to be the same object.^[6] The object was also observed by John Herschel, son of William Herschel and later catalogued by John Louis Emil Dreyer in the New General Catalogue, where the galaxy was described as "pretty faint, very small, round, northwestern of 2" with the other one being NGC 517.^[5]

Description

The galaxy has an apparent visual magnitude of 13.1 and can be classified as type S0 using the Hubble Sequence.^[2] The object's distance of roughly 230 million light-years from the Solar System can be estimated using its redshift and Hubble's law.^[4]

References

^ ^a ^b ^c ^d "NGC 515". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-12-09.
^ ^a ^b ^c ^d ^e ^f ^g "Revised NGC Data for NGC 515". spider.seds.org. Retrieved 2017-10-05.
^ ^a ^b "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-10-05.
^ ^a ^b ^c An object's distance from Earth can be determined using Hubble's law: v=H_o 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=H_o
^ ^a ^b ^c "New General Catalog Objects: NGC 500 - 549". cseligman.com. Retrieved 2017-10-16.
^ "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm".

External links

Wikimedia Commons has media related to NGC 515.

NGC 515 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
SEDS

New General Catalogue 500 to 999

v t e Astronomical catalogs
NGC	NGC 510 NGC 511 NGC 512 NGC 513 NGC 514 NGC 515 NGC 516 NGC 517 NGC 518 NGC 519 NGC 520
PGC	PGC 5197 PGC 5198 PGC 5199 PGC 5200 PGC 5201 PGC 5202 PGC 5203 PGC 5204 PGC 5205
UGC	UGC 952 UGC 953 UGC 954 UGC 955 UGC 956 UGC 957 UGC 958 UGC 959 UGC 960

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Observation history

Description

See also

References

External links