NGC 6538
| Galaxy NGC 6538 |
|
|---|---|
|
|
| AladinLite | |
| Constellation | Dragon |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 17 h 54 m 16.61 s |
| declination | + 73 ° 25 ′ 26.2 ″ |
| Appearance | |
| Morphological type | S? |
| Brightness (visual) | 13.4 mag |
| Brightness (B-band) | 14.3 mag |
| Angular expansion | 1.0 ′ × 0.5 ′ |
| Position angle | 48 ° |
| Surface brightness | 12.5 mag / arcmin² |
| Physical data | |
| Redshift | 0.004460 ± 0.000120 |
| Radial velocity | 1337 ± 36 km / s |
|
Stroke distance v rad / H 0 |
(68 ± 5) · 10 6 ly (21.0 ± 1.6) Mpc |
| history | |
| discovery | Lewis Swift |
| Discovery date | May 30, 1886 |
| Catalog names | |
| NGC 6538 • UGC 11062 • PGC 61072 • PGC 62549 • CGCG 340-025 • MCG + 12-17-012 • IRAS 17554 + 7325 • 2MASX J17541656 + 7325262 • WISEA J175417.05 + 732527.2 • NVSS J175414 + 732535 | |
NGC 6538 is a spiral dwarf galaxy of the Hubble type S in the constellation Dragon in the northern sky . It is estimated to be 68 million light years from the Milky Way and about 20,000 light years across.
The object was discovered by Lewis A. Swift on May 30, 1886 .
Web links
- NGC 6538. SIMBAD , accessed September 7, 2019 .
- NGC 6538. DSO Browser, accessed September 7, 2016 .
- Auke Slotegraaf : NGC 6538. Deep Sky Observer's Companion, accessed on September 7, 2016 (English).