1 Lupi
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Lupus |
| Right ascension | 15h 14m 37.31993s[1] |
| Declination | −31° 31′ 08.8537″[1] |
| Apparent magnitude (V) | 4.90[2] |
| Characteristics | |
| Spectral type | F1III[3] |
| U−B color index | +0.26[2] |
| B−V color index | 0.37[4] |
| Astrometry | |
| Radial velocity (Rv) | −22.80[5] km/s |
| Proper motion (μ) | RA: −8.91[1] mas/yr Dec.: –0.07[1] mas/yr |
| Parallax (π) | 1.67 ± 0.22[1] mas |
| Distance | approx. 2,000 ly (approx. 600 pc) |
| Details | |
| Mass | 6.9±0.1[6] M☉ |
| Luminosity | 2,900[7] L☉ |
| Temperature | 6,867[5] K |
| Rotational velocity (v sin i) | 3.9±0.2[4] km/s |
| Age | 47.1±3.8[6] Myr |
| Other designations | |
1 Lupi (1 Lup) is a solitary[9] giant star in the southern constellation of Lupus. Its apparent magnitude is 4.90,[2] which indicates it is faintly visible to the naked eye. Based on parallax measurements made by the Hipparcos spacecraft, this star is approximately 2,000 light years from Earth.[1]
The spectral classification of this star is F1III,[3] which suggests it is an F-type that has evolved away from the main sequence and expanded into a giant star. It has a mass around seven times that of the Sun,[6] but a luminosity 2,900 times greater.[7] The estimated age of the star is around 47 million years.[6]
References
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- ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ 6.0 6.1 6.2 6.3 Lua error in package.lua at line 80: module 'strict' not found.
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