Omicron Coronae Borealis

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o Corona Borealis
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Corona Borealis
Right ascension 15h 20m 08.559s[1]
Declination +29° 36′ 58.35″[1]
Apparent magnitude (V) +5.51
Characteristics
Spectral type K0 III
Astrometry
Proper motion (μ) RA: -117.98 ± 0.18[1] mas/yr
Dec.: -42.44 ± 0.31[1] mas/yr
Parallax (π) 12.08 ± 0.44[1] mas
Distance 270 ± 10 ly
(83 ± 3 pc)
Details
Mass 2.13 (1.90–2.14) M
Radius 10.5 (9.8–11.2) R
Luminosity 51.2 L
Surface gravity (log g) 2.34 ± 0.06 cgs
Temperature 4749 ± 20 K
Metallicity −0.29 ± 0.03
Age ? years
Other designations
HD 136512, HIP 75049, HR 5709
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data


Omicron Coronae Borealis (o CrB) is a K-type clump giant with one confirmed planet., believed to be, like HD 100655 b, one of the two least massive planets known around clump giants.[2]


The Omicron Coronae Borealis planetary system[3]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >1.5 MJ 0.83 187.83 ± 0.54 0.191 ± 0.085


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. ^ Sato. Its m sin i is the least, but the true-mass depends on error and inclination.
  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.