NGC 517

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NGC 517
NGC517 - SDSS DR14.jpg
NGC 517 and NGC 515 as seen on SDSS
Observation data (J2000 [1] epoch)
Constellation Pisces [2]
Right ascension 01h 24m 43.8s [3]
Declination +33° 25′ 46″ [3]
Redshift 0.014003 ± 0.000193 [1]
Helio radial velocity (4169 ± 58) km/s [1]
Distance 188 Mly [4]
Apparent magnitude  (V)12.5 [2]
Apparent magnitude  (B)13.5 [2]
Characteristics
Type S0 [2]
Apparent size  (V)1.4' × 0.5' [2]
Other designations
PGC 5214, UGC 960, GC 301, MGC +05-04-054, 2MASS J01244381+3325465, h 114 [1] [5]

NGC 517, also occasionally referred to as PGC 5214 or UGC 960, is a lenticular galaxy located approximately 188 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]

Contents

Observation history

Herschel discovered the object along with NGC 515 using Beta Andromedae as a reference star. He described his discovery as "two, both stellar", indicating his misidentification of the object as a star. While Herschel only noted one position about 35" east of NGC 515, Heinrich d'Arrest made the first accurate measurement of the object, using observation data of three separate nights. [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, round, stellar, southeastern of 2" with the other one being NGC 517. [5]

Description

The galaxy has an apparent visual magnitude of 12.5 and can be classified as type S0 using the Hubble Sequence. [2] The object's distance of roughly 190 million light-years from the Solar System can be estimated using its redshift and Hubble's law. [4]

NGC 517 and NGC 515 (SDSS) NGC 0517 SDSS.jpg
NGC 517 and NGC 515 (SDSS)

See also

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NGC 502 Lenticular galaxy in the constellation Pisces

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NGC 503 Elliptical galaxy in the constellation Pisces

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NGC 504 Lenticular galaxy in the constellation Pisces

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NGC 508 Elliptical galaxy in the constellation Pisces

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NGC 511 Elliptical galaxy in the constellation Pisces

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NGC 513 Spiral galaxy in constellation Andromeda

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NGC 515 Lenticular galaxy in the constellation Pisces

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 in the constellation Pisces. It was discovered on 13 September 1784 by astronomer William Herschel.

NGC 521 Galaxy in the constellation Cetus

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NGC 525

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NGC 527 Spiral galaxy in the constellation Sculptor

NGC 527, also occasionally referred to as PGC 5128 or PGC 5141, is a lenticular galaxy located approximately 259 million light-years from the Solar System in the constellation Sculptor. It was discovered on 1 September 1834 by astronomer John Herschel.

References

  1. 1 2 3 4 "NGC 517". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2017-12-09.
  2. 1 2 3 4 5 6 7 "Revised NGC Data for NGC 517". spider.seds.org. Retrieved 2017-10-05.
  3. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2017-10-05.
  4. 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
  5. 1 2 3 "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".


Coordinates: Jupiter and moon.png 01h 24m 43.8s, +33° 25′ 46″

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