NGC 4664
| Galaxy NGC 4664 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 45 m 06.0 s |
| declination | + 03 ° 03 ′ 21 ″ |
| Appearance | |
| Morphological type | SB (s) 0 / a |
| Brightness (visual) | 10.3 mag |
| Brightness (B-band) | 11.2 mag |
| Angular expansion | 3.5 ′ × 3.5 ′ |
| Surface brightness | 12.9 mag / arcmin² |
| Physical data | |
| Affiliation | Messier 49 group NGC 4636 group NGC 4343 group LGG 292 |
| Redshift | 0.003042 ± 0.000017 |
| Radial velocity | 912 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(38 ± 3) x 10 6 ly (11.5 ± 0.8) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | February 23, 1784 |
| Catalog names | |
| NGC 4624 • 4664 • 4665 • UGC 7924 • PGC 42970 • CGCG 043-018 • MCG + 01-33-005 • 2MASX J12450595 + 0303204 • GC 3158, 3196, 3197 • H II 39, I 142 • h 1390 • 1419 • GALEX ASC J124505.88 + 030320.8 • LDCE 0904 NED242 • EVCC 2217 | |
NGC 4664 = NGC 4624 = NGC 4665 , is a 10.3 mag bright, lens-shaped galaxy of the Hubble type SB0 / a in the constellation Virgo on the ecliptic . It is estimated to be 38 million light years from the Milky Way and about 35,000 light years across.
In the same area of the sky is u. a. the galaxy NGC 4636 .
Wilhelm Herschel "discovered" it twice with an 18.7-inch reflector telescope ; it is first found in his notes on February 23, 1784, he described it as "pretty bright, contains two stars in the middle". This observation is listed as NGC 4664 . On April 30, 1786 he noted for the same position “cB, pL, iR, gmbM”, which led to the entry as NGC 4665 .
John Herschel repeated these observations in the spring of 1828. For Wilhelm Herschel's first position he noted “RA ill-observed”, but did not mark this observation as doubtful. He noted a second observation as "B, pL", but a subsequent third observation as "B, E", which is listed as NGC 4624 .