NGC 755
| Galaxy NGC 755 / NGC 763 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | whale |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 01 h 56 m 22.7 s |
| declination | -09 ° 03 ′ 41 ″ |
| Appearance | |
| Morphological type | SB (rs) b? / HII |
| Brightness (visual) | 12.6 mag |
| Brightness (B-band) | 13.4 mag |
| Angular expansion | 3.3 ′ × 1.1 ′ |
| Position angle | 45 ° |
| Surface brightness | 13.8 mag / arcmin² |
| Physical data | |
| Redshift | 0.005467 +/- 0.000010 |
| Radial velocity | 1639 +/- 3 km / s |
|
Stroke distance v rad / H 0 |
(74 ± 5) · 10 6 ly (22.6 ± 1.6) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | January 10, 1785 |
| Catalog names | |
| NGC 755 • NGC 763 • PGC 7262 • MCG -02-06-005 • IRAS 01538-0918 • 2MASX J01562268-0903411 • GC 441 • H III 265 • h 177 • h 2447 • KUG 0153-093 • HIPASS J0156-09 • LDCE 112 NED003 | |
NGC 755 = NGC 763 is a bar-spiral galaxy of the Hubble type SBb in the constellation Whale south of the ecliptic . It is an estimated 74 million light years away from the Milky Way and has a diameter of about 70,000 ly.
In the same area of the sky are the galaxies NGC 713 , NGC 731 , NGC 747 , NGC 767 , among others .
The object was discovered on January 10, 1785 by the German-British astronomer Wilhelm Herschel (as NGC 755 ) and in 1886 by the American astronomer Ormond Stone (as NGC 763 ).
Web links
- SIMBAD Astronomical Database
- Auke Slotegraaf: NGC 755. Deep Sky Observer's Companion, accessed on February 26, 2016 (English).
- NGC 755. DSO Browser, accessed February 26, 2016 .