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Star in the constellation Lupus
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]
References
^
MAST: Barbara A. Mikulski Archive for Space Telescopes , Space Telescope Science Institute, retrieved 24 September 2022 .
^
a
b
c
d
e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics , 474 (2): 653–664,
arXiv :
0708.1752 ,
Bibcode :
2007A&A...474..653V ,
doi :
10.1051/0004-6361:20078357 ,
S2CID
18759600 .
^
a
b
c
d Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory , 4 (99): 99,
Bibcode :
1966CoLPL...4...99J .
^
a
b Houk, Nancy (1978), Michigan catalogue of two-dimensional spectral types for the HD stars , vol. 2, Ann Arbor: Dept. of Astronomy, University of Michigan,
Bibcode :
1978mcts.book.....H .
^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project", Astronomy & Astrophysics , 546 : 14,
arXiv :
1208.3048 ,
Bibcode :
2012A&A...546A..61D ,
doi :
10.1051/0004-6361/201219219 ,
S2CID
59451347 , A61.
^ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters , 38 (5): 331,
arXiv :
1108.4971 ,
Bibcode :
2012AstL...38..331A ,
doi :
10.1134/S1063773712050015 ,
S2CID
119257644 .
^
a
b
c
d
e
f
g
h David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal , 804 (2): 146,
arXiv :
1501.03154 ,
Bibcode :
2015ApJ...804..146D ,
doi :
10.1088/0004-637X/804/2/146 ,
S2CID
33401607 .
^
a
b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)", Astronomy and Astrophysics , 367 (3rd ed.): 521–524,
arXiv :
astro-ph/0012289 ,
Bibcode :
2001A&A...367..521P ,
doi :
10.1051/0004-6361:20000451 ,
S2CID
425754 .
^
a
b McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society , 427 (1): 343–57,
arXiv :
1208.2037 ,
Bibcode :
2012MNRAS.427..343M ,
doi :
10.1111/j.1365-2966.2012.21873.x ,
S2CID
118665352 .
^
"rho Lup" .
SIMBAD .
Centre de données astronomiques de Strasbourg . Retrieved 2017-03-10 . {{
cite web }}
: CS1 maint: postscript (
link )
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems",
Monthly Notices of the Royal Astronomical Society , 389 (2): 869–879,
arXiv :
0806.2878 ,
Bibcode :
2008MNRAS.389..869E ,
doi :
10.1111/j.1365-2966.2008.13596.x ,
S2CID
14878976 .
^ Chen, Christine H.; et al. (September 2012), "A Spitzer MIPS Study of 2.5-2.0 M⊙ Stars in Scorpius–Centaurus", The Astrophysical Journal , 756 (2): 24,
arXiv :
1207.3415 ,
Bibcode :
2012ApJ...756..133C ,
doi :
10.1088/0004-637X/756/2/133 ,
S2CID
119278056 , 133.
^ Koen, Chris; Eyer, Laurent (2002), "New periodic variables from the Hipparcos epoch photometry", Monthly Notices of the Royal Astronomical Society , 331 (1): 45–59,
arXiv :
astro-ph/0112194 ,
Bibcode :
2002MNRAS.331...45K ,
doi :
10.1046/j.1365-8711.2002.05150.x ,
S2CID
10505995 .
^ Belle, G. T. (2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review , 20 (1): 51,
arXiv :
1204.2572 ,
Bibcode :
2012A&ARv..20...51V ,
doi :
10.1007/s00159-012-0051-2 ,
S2CID
119273474 .