NGC 4975
| Galaxy NGC 4975 |
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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 07 m 50.20 s |
| declination | -05 ° 01 ′ 02.9 ″ |
| Appearance | |
| Morphological type | SAB (rs) 0 |
| Brightness (visual) | 13.9 likes |
| Brightness (B-band) | 14.9 mag |
| Angular expansion | 1.1 ′ × 0.7 ′ |
| Position angle | 46 ° |
| Surface brightness | 13.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.017399 ± 0.000150 |
| Radial velocity | 5216 ± 45 km / s |
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Stroke distance v rad / H 0 |
(229 ± 16) x 10 6 ly (70.3 ± 5.0) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | February 19, 1830 |
| Catalog names | |
| NGC 4975 • PGC 45492 • MCG -01-34-002 • 2MASX J13075018-0501027 • GSC 4963 00142 • GC 3412 • h 1534 • 2MASS J13075020-0501028 • WISEA J130750.20-050102.9 | |
NGC 4975 is a 13.9 mag bright lenticular galaxy of the Hubble type "S0" in the constellation Virgo on the ecliptic . It is an estimated 229 million light-years from the Milky Way and about 75,000 light-years across.
In the same area of the sky are u. a. the galaxies NGC 4941 , NGC 4989 , NGC 4990 , IC 855 .
The supernova SN 1968aa was observed here.
The object was discovered on February 19, 1830 by John Herschel , who described it as "very faint, very small, round, pretty suddenly brighter in the middle".
Web links
- NGC 4975. SIMBAD , accessed February 23, 2015 .
- NGC 4975. DSO Browser, accessed February 23, 2015 .
- Courtney Seligman : New General Catalog Objects: NGC 4950-4999. Retrieved February 23, 2015 .
- Aladin Lite