NGC 4666
| Galaxy NGC 4666 |
|
|---|---|
|
|
| NGC 4666 & NGC 4668 (bottom left) - 2.2 m telescope from ESO | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 45 m 08.6 s |
| declination | -00 ° 27 ′ 43 ″ |
| Appearance | |
| Morphological type | SABc: / HII / LINER |
| Brightness (visual) | 10.8 mag |
| Brightness (B-band) | 11.5 likes |
| Angular expansion | 4.5 ′ × 1.3 ′ |
| Position angle | 42 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Affiliation |
Virgo II group LGG 299 |
| Redshift | 0.005101 +/- 0.000017 |
| Radial velocity | 1529 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(65 ± 5) x 10 6 ly (19.8 ± 1.4) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | February 22, 1784 |
| Catalog names | |
| NGC 4666 • UGC 7926 • PGC 42975 • CGCG 015-015 • MCG + 00-33-008 • IRAS 12425-0011 • 2MASX J12450867-0027428 • GC 3198 • H I 15 • h 1420 • HIPASS J1245-00 • LDCE 904 NED243 • HOLM 453A | |
NGC 4666 is a bar-spiral galaxy with an active nucleus of the Hubble type SBc in the constellation Virgo on the ecliptic . It is an estimated 65 million light-years away from the Milky Way and has a diameter of around 90,000 ly.
The system is a so-called starburst galaxy , a galaxy in which a particularly large number of new stars are currently emerging . At such high rates of star formation occurs when galaxies each other by gravity influence , which in this case including through NGC 4668 happens.
Together with NGC 4632 and NGC 4668 it forms the small galaxy group LGG 299. In the same area of the sky are u. a. the galaxies NGC 4642 , NGC 4653 .
The supernovae SN 1965H (Type-IIP) and ASASSN -14lp ( Type-Ia ) were observed here.
The object was discovered by William Herschel on February 22, 1784 .
NGC 4666 group ( LGG 299 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 4666 | PGC 42975 | 65 |
| NGC 4632 | PGC 42689 | 73 |
| NGC 4668 | PGC 42999 | 69 |
Web links
- SIMBAD Astronomical Database
- ESO: The Superwind Galaxy NGC 4666 + Photos & Animations - September 1, 2010