HD 224693

HD 224693
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cetus
Right ascension 23h 59m 53.83s[1]
Declination −22° 25 41.2[1]
Apparent magnitude (V) +8.23
Characteristics
Spectral type G2IV
U−B color index ?
B−V color index ?
Variable type none
Astrometry
Radial velocity (Rv)+1.5 km/s
Proper motion (μ) RA: 148.49 ± 0.88[1] mas/yr
Dec.: 27.37 ± 0.43[1] mas/yr
Parallax (π)10.16 ± 0.91[1] mas
Distance320 ± 30 ly
(98 ± 9 pc)
Absolute magnitude (MV)3.36
Details
Mass1.29 ± 0.09[2] M
Radius1.7 ± 0.3 R
Luminosity3.91 L
Surface gravity (log g)4.18 ± 0.06[2] cgs
Temperature6053 ± 28[2] K
Metallicity0.28 ± 0.02[2]
Rotational velocity (v sin i)4.2[3] km/s
Age3[3] Gyr
Other designations
HIP 118319, GSC 06411-00109, SAO 192301
Database references
SIMBADdata

HD 224693 (also known as HIP 118319) is a metal rich[4] yellow subgiant star approximately 320 light-years away[1] in the constellation Cetus.

Planetary system

In 2006, an extrasolar planet was discovered orbiting HD 224693 by the Keck telescope using radial velocity measurements. A preliminary search for transits using photometric data from Fairborn Observatory was inconclusive because data around the predicted time of transit was too sparse to rule out possible transits.[4]

The HD 224693 planetary system[4]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >0.71 MJ 0.192 26.73 ± 0.02 0.05 ± 0.03

See also

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. 1 2 3 4 Santos, N. C.; et al. (2013). "SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs". Astronomy and Astrophysics. 556. A150. arXiv:1307.0354Freely accessible. Bibcode:2013A&A...556A.150S. doi:10.1051/0004-6361/201321286.
  3. 1 2 Delgado Mena, E.; et al. (April 2015), "Li abundances in F stars: planets, rotation, and Galactic evolution", Astronomy & Astrophysics, 576: 24, arXiv:1412.4618Freely accessible, Bibcode:2015A&A...576A..69D, doi:10.1051/0004-6361/201425433, A69.
  4. 1 2 3 Johnson, John Asher; et al. (2006). "The N2K Consortium. VI. Doppler Shifts without Templates and Three New Short-Period Planets". The Astrophysical Journal. 647 (1): 600–611. arXiv:astro-ph/0604348Freely accessible. Bibcode:2006ApJ...647..600J. doi:10.1086/505173.

Coordinates: 23h 59m 53.8329s, −22° 25′ 41.208″


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