NGC 4725
| Galaxy NGC 4725 |
|
|---|---|
|
|
| Image taken with a 60 cm telescope | |
| AladinLite | |
| Constellation | Berenike's hair |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 12 h 50 m 26.6 s |
| declination | + 25 ° 30 ′ 03 ″ |
| Appearance | |
| Morphological type | SAB (r) from / Sy2 |
| Brightness (visual) | 9.3 mag |
| Brightness (B-band) | 10.1 mag |
| Angular expansion | 11 ′, 0 × 7 ′, 4 |
| Position angle | 35 ° |
| Surface brightness | 13.9 mag / arcmin² |
| Physical data | |
| Redshift | 0.004023 ± 0.000010 |
| Radial velocity | (1206 ± 3) km / s |
|
Stroke distance v rad / H 0 |
(54 ± 4) · 10 6 ly (16.5 ± 1.2) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 10, 1785 |
| Catalog names | |
| NGC 4725 • UGC 7989 • PGC 43451 • CGCG 129-027 • MCG + 04-30-022 • IRAS 12478 + 2545 • KUG 1247 + 257B • 2MASX J12502661 + 2530027 • GC 3249 • H I 84 • h 1451 • LDCE 867 NED127 • HOLM 468A | |
NGC 4725 is a 9.3 likes bright barred spiral galaxy with an active galactic nucleus from Hubble type SBab in the constellation Coma Berenices the northern sky . It is estimated to be 54 million light-years away from the Milky Way and has a diameter of about 170,000 ly
. a. the galaxies NGC 4712 and NGC 4747 .
The supernovae SN 1940B (Type-IIP), SN 1969H (Type-I), SN 1987E and SN 1999gs ( Type-Ia ) were observed here.
The object was discovered on April 10, 1785 by the German-British astronomer Wilhelm Herschel .
The galaxy NGC 4725 imaged by the Spitzer Space Telescope in infrared light
Web links
Commons : NGC 4725 - Album containing pictures, videos and audio files
- SIMBAD Astronomical Database
- Supernova SN 1999gs in NGC 4725
- One-Armed Spiral Galaxy NGC 4725 - Astronomy Picture of the Day from September 1, 2005 (English).
- NGC4725
- Spektrum.de : Amateur recordings [1] [2]