Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Lupus |
Right ascension | 14h 37m 53.22583s[2] |
Declination | −49° 25′ 32.9798″[2] |
Apparent magnitude (V) | 4.05[3] |
Characteristics | |
Spectral type | B3/4 V[4] |
U−B color index | −0.56[3] |
B−V color index | −0.15[3] |
Astrometry | |
Radial velocity (Rv) | 8.00±7.40[5] km/s |
Proper motion (μ) | RA: −28.26[2] mas/yr Dec.: −28.82[2] mas/yr |
Parallax (π) | 10.32 ± 0.16 mas[2] |
Distance | 316 ± 5 ly (97 ± 2 pc) |
Absolute magnitude (MV) | −0.88[6] |
Details | |
Mass | 4.66[7] M☉ |
Radius | 3.4[8] R☉ |
Luminosity | 365[9] L☉ |
Temperature | 15,947±542[7] K |
Rotational velocity (v sin i) | 166[7] km/s |
Age | 44[7] Myr |
Other designations | |
Database references | |
SIMBAD | data |
Rho Lupi, Latinized from ρ Lupi, is a solitary[11] star in the southern constellation of Lupus. It is visible to the naked eye with an apparent visual magnitude of 4.05.[3] Based upon an annual parallax shift of 10.32 mas as seen from Earth, it is located about 316 light years from the Sun. It is a member of the Upper Centaurus–Lupus subgroup of the nearby Scorpius–Centaurus association.[12]
This is a B-type main sequence star with a stellar classification of B3/4 V.[4] It is a microvariable with a period of 10.7 hours and an amplitude of 0.0046 in magnitude.[13] With an age of just 44[7] million years, the star is spinning with a projected rotational velocity of 166 km/s.[7] This is giving the star an oblate shape with an equatorial bulge that is an estimated 6% larger than the polar radius.[14] It has an estimated 4.66[7] times the mass of the Sun and about 3.4[8] times the Sun's radius. It is radiating 365[9] times the solar luminosity from its outer atmosphere at an effective temperature of 15,947 K.[7]
MAST
was invoked but never defined (see the help page).vanLeeuwen2007
was invoked but never defined (see the help page).Johnson1966
was invoked but never defined (see the help page).houk1978
was invoked but never defined (see the help page).deBruijne2012
was invoked but never defined (see the help page).Anderson2012
was invoked but never defined (see the help page).David2015
was invoked but never defined (see the help page).PasinettiFracassini2001
was invoked but never defined (see the help page).Mcdonald2012
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).Chen2012
was invoked but never defined (see the help page).koen2002
was invoked but never defined (see the help page).belle2012
was invoked but never defined (see the help page).