WR 136
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|
WR 136 |
|
| Observation data Epoch J2000 |
|
|---|---|
| Constellation (pronunciation) |
Cygnus |
| Right ascension | 20h 12m 06.5421s |
| Declination | +38° 21′ 17.779″ |
| Apparent magnitude (V) | 7.48 |
| Characteristics | |
| Spectral type | WN6 |
| U-B color index | ? |
| B-V color index | 0.009 ± 0.047 |
| Variable type | None |
| Astrometry | |
| Radial velocity (Rv) | -21.6 km/s |
| Proper motion (μ) | RA: -7.54 mas/yr Dec.: -7.38 mas/yr |
| Parallax (π) | 0.61 ± 0.63 mas |
| Distance | approx. 5000 ly (approx. 2000 pc) |
| Absolute magnitude (MV) | 7.48 |
| Details | |
| Mass | 10 M☉ |
| Radius | ? R☉ |
| Luminosity | ? L☉ |
| Temperature | 40.000-70.000 K |
| Metallicity | ? |
| Rotation | ? |
| Age | 4.5 million years |
| Other designations | |
| Database references | |
| SIMBAD | data |
WR 136, Wolf-Rayet (red supergiant) Star.
[edit] Reference
- http://jumk.de/astronomie/big-stars/wr-136.shtml
- http://www.springerlink.com/content/04205412121836v4/
- http://chandra.harvard.edu/photo/2003/ngc6888/
- http://www.giga-parsec.de/WRspectra.html
- http://www.castfvg.it/stelle/spettri/O/wr_136_01.htm
[edit] See Also
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