NGC 5103
| Galaxy NGC 5103 |
|
|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Hunting dogs |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 20 m 30.1 s |
| declination | + 43 ° 05 ′ 02 ″ |
| Appearance | |
| Morphological type | Sab / RET |
| Brightness (visual) | 12.7 mag |
| Brightness (B-band) | 13.6 mag |
| Angular expansion | 1.4 ′ × 1.0 ′ |
| Position angle | 143 ° |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 346 |
| Redshift | 0.004246 ± 0.000017 |
| Radial velocity | 1273 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(60 ± 4) · 10 6 ly (18.4 ± 1.3) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 9, 1787 |
| Catalog names | |
| NGC 5103 • UGC 8388 • PGC 46552 • CGCG 217-031 • 218-001 • MCG + 07-27-062 • 2MASX J13203005 + 4305024 • GC 3505 • H II 665 • GALEX ASC J132030.14 + 430502.5 | |
NGC 5103 is a 12.7 likes bright spiral galaxy of Hubble type Sc in the constellation Canes Venatici on the northern sky . It is estimated to be 60 million light years away from the Milky Way and has a diameter of about 25,000 ly . Together with PGC 46386 and PGC 47053 , it forms the small galaxy group LGG 346
. a. the galaxies NGC 5123 .
The object was discovered on April 9, 1787 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "pB, cS, E. 300 power showed it like a star with burrs".
NGC 5103 group ( LGG 346 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 5103 | PGC 46552 | 60 |
| PGC 46386 | UGC 8365 | 57 |
| PGC 47053 | UGC 8449 | 57 |