NGC 4100
| Galaxy NGC 4100 |
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|---|---|
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| The spiral galaxy NGC 4100 imaged with the 81 cm reflecting telescope of the Mount Lemmon Observatory | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 06 m 08.453 s |
| declination | + 49 ° 34 ′ 57.67 ″ |
| Appearance | |
| Morphological type | (R ') SA (rs) bc / HII |
| Brightness (visual) | 11.1 mag |
| Brightness (B-band) | 11.9 likes |
| Angular expansion | 5.4 ′ × 1.7 ′ |
| Position angle | 167 ° |
| Surface brightness | 13.4 mag / arcmin² |
| Physical data | |
| Affiliation | UMa cluster NGC 3992 group LGG 258 |
| Redshift | 0.003584 ± 0.000004 |
| Radial velocity | 1074 ± 1 km / s |
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Stroke distance v rad / H 0 |
(51 ± 4) · 10 6 ly (15.6 ± 1.1) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | March 9, 1788 |
| Catalog names | |
| NGC 4100 • UGC 7095 • PGC 38370 • CGCG 243-044 • MCG + 08-22-68 • IRAS 12036 + 4951 • 2MASX J12060860 + 4934563 • GC 2715 • H III 717 • h 1084 • LDCE 867 NED072 • NVSS J120608 + 493456 | |
NGC 4100 is a spiral galaxy with extensive star formation regions of the Hubble type Sbc in the constellation Great Bear in the northern sky . It is estimated to be 51 million light years away from the Milky Way and about 80,000 light years in diameter. It is part of the Ursa Major Galaxy Cluster and a member of the NGC 3992 group ( LGG 258 ).
In the same area of the sky are u. a. the galaxies NGC 4085 and NGC 4088 .
The object was discovered on March 9, 1788 by Wilhelm Herschel using his 18.7-inch telescope and was later included in his New General Catalog by Johan Dreyer .
The center of NGC 4100 as captured by the Hubble Space Telescope . In the false color display, orange areas with increased Hα emission emerge.
In the ultraviolet image of NGC 4100's GALEX space telescope , older stars appear yellow, younger stars appear blue.
