HD 100655

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HD 100655
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Leo
Right ascension 11h 35m 03.753s[1]
Declination +20° 26′ 29.57″[1]
Apparent magnitude (V) +6.45
Characteristics
Spectral type G9 III
Astrometry
Proper motion (μ) RA: –59.23 ± 0.51[1]mas/yr
Dec.: –0.33 ± 0.48[1] mas/yr
Parallax (π) 8.18 ± 0.50[1] mas
Distance 400 ± 20 ly
(122 ± 7 pc)
Details
Mass 2.4+0.2
−0.4
 M
Radius 9.3+1.3
−1.1
 R
Luminosity 43 ± 5 L
Surface gravity (log g) 2.89 ± 0.10 cgs
Temperature 4861 ± 110 K
Metallicity [Fe/H] 0.15 ± 0.12 dex
Other designations
HIP 56508, HR 4459, BD+21 2331
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data


HD 100655 is a G-type clump giant with one confirmed planet,[2] like Omicron Coronae Borealis b, one of the two least massive planets known around clump giants.[3]

The HD 100655 planetary system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >1.7 MJ 0.76+0.02
−0.04
157.57 ± 0.65 0.085 ± 0.054


References[edit]

  1. ^ 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. Vizier catalog entry
  2. ^ a b Omiya, Masashi et al. (2012). "A Planetary Companion to the Intermediate-Mass Giant HD 100655". Publications of the Astronomical Society of Japan 64 (2). 34. arXiv:1111.3746. Bibcode:2012PASJ...64...34O. doi:10.1093/pasj/64.2.34. 
  3. ^ Sato, Bun'ei et al. (2012). "Substellar Companions to Seven Evolved Intermediate-Mass Stars". Publications of the Astronomical Society of Japan 64 (6). 135. arXiv:1207.3141. Bibcode:2012PASJ...64..135S. doi:10.1093/pasj/64.6.135.