87 Leonis

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87 Leonis
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]
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]
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[1] mas
Distance approx. 600 ly
(approx. 190 pc)
Absolute magnitude (MV) −1.6[3]
Radius 37[4] R
Rotational velocity (v sin i) ≤ 19[2] km/s
Other designations
87 Leo, e Leonis, e Leo, BD−02 3360, FK5 2917, GC 15779, HD 99998, HIP 56127, HR 4432, PPM 178510, SAO 138238.[1]
Database references

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]


  1. ^ a b c d e f g h i j k * e Leo -- Star, database entry, SIMBAD. Accessed on line November 8, 2010.
  2. ^ 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.
  3. ^ From apparent magnitude and parallax.
  4. ^ 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.