Lambda Velorum
From Wikipedia, the free encyclopedia
| Observation data Epoch J2000 |
|
|---|---|
| Constellation | Vela |
| Right ascension | 09h 07m 59.8s |
| Declination | -43° 25′ 57″ |
| Apparent magnitude (V) | 2.23 |
| Spectral Characteristics | |
| Spectral type | K4.5 Ib-II |
| U-B color index | 1.81 |
| B-V color index | 1.67 |
| Variable type | Irregular variable |
| Astrometry | |
| Radial velocity (Rv) | 18 km/s |
| Proper motion (μ) | RA: -23.21 mas/yr Dec.: 14.28 mas/yr |
| Parallax (π) | 5.69 ± 0.53 mas |
| Distance | 570 ± 50 ly (180 ± 20 pc) |
| Absolute magnitude (MV) | -3.99 |
| Physical Characteristics | |
| Mass | 9 M☉ |
| Radius | 200 R☉ |
| Luminosity | 10,000 L☉ |
| Temperature | 4,000 K |
| Metallicity | ? |
| Rotation | ? |
| Age | 2.7 × 107 years |
| Other designations | |
Lambda Velorum (λ Vel / λ Velorum) is a star in the constellation Vela. It also has the traditional name Suhail (which, confusingly, can sometimes be used for Gamma Velorum).
Lambda Velorum is a supergiant star of spectral class K5. Supergiant stars like lambda Velorum use up their hydrogen "fuel" much faster than do smaller stars and Lambda Vel. is estimated to be only some 27 million years old. It is classified as an irregular variable star and its brightness varies from magnitude +2.14 to +2.30.
[edit] External link
 |
This variable star–related article is a stub. You can help Wikipedia by expanding it. |
