NGC 6521
| Galaxy NGC 6521 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Dragon |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 17 h 55 m 48.4407 s |
| declination | + 62 ° 36 ′ 44.118 ″ |
| Appearance | |
| Morphological type | cD / E / LINER / Sy1.9 |
| Brightness (visual) | 12.4 mag |
| Brightness (B-band) | 13.4 mag |
| Angular expansion | 1.6 ′ × 1.3 ′ |
| Position angle | 160 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | WBL 650 |
| Redshift | 0.027462 ± 0.000077 |
| Radial velocity | 8233 ± 23 km / s |
|
Stroke distance v rad / H 0 |
(377 ± 26) · 10 6 ly (115.6 ± 8.1) Mpc |
| history | |
| discovery | Heinrich d'Arrest |
| Discovery date | October 27, 1861 |
| Catalog names | |
| NGC 6521 • UGC 11061 • PGC 61121 • CGCG 300-095 • CGCG 301-002 • MCG + 10-25-119 • 2MASX J17554844 + 6236435 • GC 4360 • NVSS J175548 + 623644 • LDCE 1271 NED008 | |
NGC 6521 is a 12.4 likes bright cD galaxy with an active galactic nucleus from Hubble type E2 in the constellation Draco the northern sky . It is an estimated 377 million light years away from the Milky Way and about 175,000 light years in diameter .
In the same area of the sky are u. a. the galaxies NGC 6512 and NGC 6516 .
The Type Ia supernova SN 2009hs was observed here.
The object was discovered by Heinrich d'Arrest on October 27, 1861 .
See also
- PGC 61141 ( NGC 6521A )
Web links
- NGC 6521. SIMBAD , accessed August 31, 2019 .
- NGC 6521. DSO Browser, accessed August 31, 2019 .
- Auke Slotegraaf : NGC 6521. Deep Sky Observer's Companion, accessed on August 31, 2016 .