HD 100777

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HD 100777
Observation data
Epoch J2000      Equinox J2000
Constellation Leo
Right ascension  11h 35m 51.5230s[1]
Declination −04° 45′ 20.5012″[1]
Apparent magnitude (V) 8.42
Characteristics
Spectral type K0IV
Astrometry
Proper motion (μ) RA: −11.353±0.111[1] mas/yr
Dec.: 35.358±0.061[1] mas/yr
Parallax (π)20.1596 ± 0.0589[1] mas
Distance161.8 ± 0.5 ly
(49.6 ± 0.1 pc)
Absolute magnitude (MV)4.20
Other designations
BD–03°3147, HIP 56572, SAO 138288, TYC 4933-678-1, 2MASS J11355152-0445204[2]
Database references
SIMBADdata

HD 100777 is an orange subgiant star located approximately 162 light years away in the constellation Leo. The apparent magnitude is 8.42 and absolute magnitude is 4.81. It is also called HIP 56572. In 2007, a planet was found to be orbiting the star.

The HD 100777 planetary system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >1.16 ± 0.03 MJ 1.03 ± 0.03 383.7 ± 1.2 0.36 ± 0.02

See also[edit]

References[edit]

  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ "HD 100777". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-08.
  3. ^ Naef, M.; et al. (2007). "The HARPS search for southern extra-solar planets. IX. Exoplanets orbiting HD 100777, HD 190647, and HD 221287". Astronomy and Astrophysics. 470 (2): 721–726. arXiv:0704.0917. Bibcode:2007A&A...470..721N. doi:10.1051/0004-6361:20077361.

Coordinates: Sky map 11h 35m 51.5234s, −04° 45′ 20.509″