Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Lupus |
Right ascension | 15h 22m 08.27124s[1] |
Declination | −47° 55′ 40.0543″[1] |
Apparent magnitude (V) | 5.01[2] |
Characteristics | |
Spectral type | F6 III-IV[3] |
U−B color index | +0.04[2] |
B−V color index | +0.50[2] |
Astrometry | |
Proper motion (μ) | RA: −141.19[1] mas/yr Dec.: −132.92[1] mas/yr |
Parallax (π) | 27.89 ± 0.33 mas[1] |
Distance | 117 ± 1 ly (35.9 ± 0.4 pc) |
Absolute magnitude (MV) | +2.32[4] |
Details | |
Mass | 1.67[5] M☉ |
Surface gravity (log g) | 3.87±0.10[5] cgs |
Temperature | 6,447±80[5] K |
Metallicity [Fe/H] | 0.17±0.05[5] dex |
Rotational velocity (v sin i) | 2.8±0.2[4] km/s |
Age | 2.0[5] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Nu1 Lupi (ν1 Lup) is a solitary[7] star in the southern constellation of Lupus. It is visible to the naked eye with an apparent visual magnitude of 5.01.[2] It is a high proper motion star[8] with an annual parallax shift of 27.89[1] mas as seen from Earth, yielding a distance estimate of 117 light years from the Sun.
This is a two[5] billion year old evolved star with a stellar classification of F6 III-IV,[3] indicating that the spectrum has characteristics intermediate between a subgiant and giant star. It is most likely the source of X-ray emission[8] detected at these coordinates with a luminosity of 1.09×1029 erg s−1.[9] The star has an estimated 1.67[5] times the mass of the Sun and is spinning slowly with a projected rotational velocity of 2.8 km/s.[4]
vanLeeuwen2007
was invoked but never defined (see the help page).Mermilliod1986
was invoked but never defined (see the help page).Gray2006
was invoked but never defined (see the help page).AmmlerVonEiff2012
was invoked but never defined (see the help page).Bensby2014
was invoked but never defined (see the help page).SIMBAD
was invoked but never defined (see the help page).Eggleton2008
was invoked but never defined (see the help page).Haakonsen2009
was invoked but never defined (see the help page).Pizzolato2000
was invoked but never defined (see the help page).