87 Leonis
Appearance
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Leo |
Right ascension | 11h 30m 18.8934s[1] |
Declination | −03° 00′ 12.602″[1] |
Apparent magnitude (V) | 4.771[1] |
Characteristics | |
Spectral type | K3.5III[1] |
U−B color index | +1.83[2] |
B−V color index | +1.54[2] |
R−I color index | +0.84[2] |
Astrometry | |
Radial velocity (Rv) | 18.8 ± 0.9[1] km/s |
Proper motion (μ) | RA: 19.78[1] mas/yr Dec.: −17.14[1] mas/yr |
Parallax (π) | 5.40 ± 0.99 mas[1] |
Distance | approx. 600 ly (approx. 190 pc) |
Absolute magnitude (MV) | −1.56[3] |
Details | |
Radius | 37[4] R☉ |
Rotational velocity (v sin i) | ≤ 19[2] km/s |
Other designations | |
Database references | |
SIMBAD | data |
87 Leonis (87 Leo) is a K-type giant star in the constellation of Leo.[1] It is visible by the naked eye, with an apparent visual magnitude of approximately 4.771, and is approximately 600 light years away from the Earth.[1]
References
- ^ a b c d e f g h i j k * e Leo -- Star, database entry, SIMBAD. Accessed on line November 8, 2010.
- ^ a b c d HR 4432, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 8, 2010.
- ^ 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.
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ignored (help) - ^ HD 99998, database entry, Catalog of Apparent Diameters and Absolute Radii of Stars (CADARS), 3rd edition, L. E. Pasinetti-Fracassini, L. Pastori, S. Covino, and A. Pozzi, CDS ID II/224. Accessed on line November 8, 2010.