NGC 798
| Galaxy NGC 798 |
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|---|---|
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| SDSS recording | |
| AladinLite | |
| Constellation | triangle |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 02 h 03 m 19.6 s |
| declination | + 32 ° 04 ′ 39 ″ |
| Appearance | |
| Morphological type | E. |
| Brightness (visual) | 13.6 mag |
| Brightness (B-band) | 14.6 mag |
| Angular expansion | 1.2 ′ × 0.5 ′ |
| Position angle | 137 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Redshift | 0.016975 ± 0.000103 |
| Radial velocity | 5089 ± 31 km / s |
|
Stroke distance v rad / H 0 |
(233 ± 16) x 10 6 ly (71.4 ± 5.0) Mpc |
| history | |
| discovery | Édouard Stephan |
| Discovery date | December 10, 1871 |
| Catalog names | |
| NGC 798 • UGC 1539 • PGC 7823 • CGCG 503-078 • MCG + 05-05-048 • 2MASX J02031958 + 3204391 • GC 5211 • NSA 131097 • LDCE 129 NED017 | |
NGC 798 is an elliptical galaxy of Hubble type E6 in the constellation triangle. It is estimated to be 233 million light years away from the Milky Way and has a diameter of about 80,000 ly.
In the same area of the sky are the galaxies NGC 783 , NGC 785 , NGC 789 , NGC 793 , among others .
The object was discovered on December 10, 1871 by the French astronomer Édouard Jean-Marie Stephan .
Web links
Commons : NGC 798 - collection of images, videos, and audio files
- SIMBAD Astronomical Database
- Auke Slotegraaf: NGC 798. Deep Sky Observer's Companion, accessed on March 21, 2016 (English).
- NGC 798. DSO Browser, accessed March 21, 2016 .