NGC 4948
| Galaxy NGC 4948 / IC 4156 |
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|---|---|
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| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 13 h 04 m 55.9 s |
| declination | -07 ° 56 ′ 52 ″ |
| Appearance | |
| Morphological type | SB (s) dm: / sp |
| Brightness (visual) | 14.6 mag |
| Brightness (B-band) | 15.2 mag |
| Angular expansion | 2.0 ′ × 0.7 ′ |
| Position angle | 145 ° |
| Surface brightness | 14.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.003746 ± 0.000021 |
| Radial velocity | (1123 ± 6) km / s |
|
Stroke distance v rad / H 0 |
(46 ± 3) · 10 6 ly (14.1 ± 1.0) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | May 25, 1887 |
| Catalog names | |
| NGC 4948 • IC 4156 • PGC 45224 • MCG -01-33-079 • 2MASX J13045595-0756517 • LDCE 904 NED295 • HIPASS J1305-07 | |
NGC 4948 = IC 4156 is a 14.6 likes bright barred spiral galaxy with pronounced emission lines from the Hubble type SBd in the constellation Virgo on the ecliptic , the estimated 46 million light-years from the Milky Way 's center. In the same area of the sky are u. a. the galaxies NGC 4925 , NGC 4928 , NGC 4942 , NGC 4958 .
The Type Ia supernova SN 1994U was observed here.
The object was discovered twice; first on May 25, 1887 by Lewis A. Swift (discovery listed as NGC 4948 ); then in July 1899 by DeLisle Stewart (listed as IC 4156 ).
Web links
- NGC 4948. SIMBAD, accessed February 22, 2015 .
- NGC 4948. DSO Browser, accessed February 22, 2015 .
- Auke Slotegraaf: NGC 4948. Deep Sky Observer's Companion, accessed on February 22, 2015 (English).