Astronomy:NGC 519
| NGC 519 | |
|---|---|
 NGC 519 imabed by SDSS | |
| Observation data (J2000[1] epoch) | |
| Constellation | Cetus[2] |
| Right ascension | 01h 24m 28.6390s[3] |
| Declination | −01° 38′ 28.526″[3] |
| Redshift | 0.017756 ± 0.000260[1] |
| Helio radial velocity | (5276 ± 78) km/s[1] |
| Distance | 242 Mly[4] |
| Group or cluster | Abell 194[5] |
| Apparent magnitude (V) | 14.4[2] |
| Apparent magnitude (B) | 15.4[2] |
| Characteristics | |
| Type | E[2] |
| Size | ~53,500 ly (16.39 kpc) (estimated)[3] |
| Apparent size (V) | 0.5′ × 0.3′[2] |
| Other designations | |
| 2MASS J01242863-0138284, MCG+00-04-116, PGC 5182[1][6] | |
NGC 519, also occasionally referred to as PGC 5182, is an elliptical galaxy located approximately 242 million light-years from the Solar System[4] in the constellation Cetus.[2] It was discovered by American astronomer Lewis Swift on 20 November 1886.[6] It is a member of the Abell 194 galaxy cluster.[5]
Observation history
Swift discovered the object along with NGC 530, 538 and 557 using a 16-inch refractor telescope at the Warner Observatory.[7] It was later catalogued by John Louis Emil Dreyer in the New General Catalogue, where the galaxy was described as "most extremely faint, very small, round, very difficult".[6]
Description
The galaxy appears very dim in the sky as it only has an apparent visual magnitude of 14.4. It can be classified as type E using the Hubble Sequence.[2] The object's distance of roughly 240 million light-years from the Solar System can be estimated using its redshift and Hubble's law.[4]
See also
References
- ↑ 1.0 1.1 1.2 1.3 "NGC 519". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+519.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "Revised NGC Data for NGC 519". http://spider.seds.org/ngc/revngcic.cgi?NGC519.
- ↑ 3.0 3.1 3.2 "Results for object NGC 0519". NASA and Caltech. https://ned.ipac.caltech.edu/byname?objname=NGC+0519.
- ↑ 4.0 4.1 4.2 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
- ↑ 5.0 5.1 Abell, G.O. (1958). "The distribution of rich clusters of galaxies". Astrophysical Journal Supplement Series 3: 211–288. doi:10.1086/190036. Bibcode: 1958ApJS....3..211A.
- ↑ 6.0 6.1 6.2 "New General Catalog Objects: NGC 500 - 549" (in en-US). http://cseligman.com/text/atlas/ngc5.htm#519.
- ↑ "astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm". http://www.astronomy-mall.com/Adventures.In.Deep.Space/NGC%201-7840%20complete.htm.
External links
- NGC 519 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS
Coordinates: 
01h 24m 28.6390s, −01° 38′ 28.526″
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