NGC 7724
| Galaxy NGC 7724 |
|
|---|---|
|
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| AladinLite | |
| Constellation | Aquarius |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 23 h 39 m 07.16 s |
| declination | -12 ° 13 ′ 26.6 ″ |
| Appearance | |
| Morphological type | (R ') SB (r) b |
| Brightness (visual) | 12.9 mag |
| Brightness (B-band) | 13.7 mag |
| Angular expansion | 1.5 '× 1.0' |
| Position angle | 37 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | NGC 7727 group LGG 480 |
| Redshift | 0.006428 ± 0.000030 |
| Radial velocity | 1927 ± 9 km / s |
|
Stroke distance v rad / H 0 |
(90 ± 6) · 10 6 ly (27.5 ± 1.9) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | November 27, 1785 |
| Catalog names | |
| NGC 7724 • PGC 72015 • MCG -02-60-006 • 2MASX J23390716-1213266 • GALEX ASC J233907.23-121324.5 • LDCE 1589 NED002 • WISEA J233907.22-121326.6 | |
NGC 7724 is a barred spiral galaxy of the Hubble type SBb in the constellation Aquarius on the ecliptic . It is estimated to be 90 million light years from the Milky Way and about 40,000 light years in diameter. Together with NGC 7727 , it forms a gravitationally bound galaxy pair and is a member of the NGC 7727 group ( LGG 480 ).
In the same area of the sky is u. a. the galaxy NGC 7723 .
The object was discovered on November 27, 1785 by the German-British astronomer Wilhelm Herschel .