HD 20367

HD 20367
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Aries
Right ascension 03h 17m 40.05s [1]
Declination +31° 07 37.4 [1]
Apparent magnitude (V) 6.410 [2]
Characteristics
Spectral type G0[2]
B−V color index 0.523[2]
Astrometry
Radial velocity (Rv)5.3 ± 2[2] km/s
Proper motion (μ) RA: -104.18 ± 0.50 [1] mas/yr
Dec.: 58.11 ± 0.48 [1] mas/yr
Parallax (π)37.48 ± 0.63[1] mas
Distance87 ± 1 ly
(26.7 ± 0.4 pc)
Absolute magnitude (MV)4.24[3]
Details
Mass1.04 ± 0.06[4] M
Radius1.18 ± 0.32[4] R
Luminosity (visual, LV)1.72[5] L
Surface gravity (log g)4.53 ± 0.22[6] cgs
Temperature5929[4] K
Metallicity[Fe/H] = 0.1[4]
Rotational velocity (v sin i)3[7] km/s
Age8.7 × 108 [4] years
Other designations
AG+30° 340, BD+30° 520, GC 3929, GCRV 1814, GSC 02340-01798, HIP 15323, IRAS 03146+3056, PPM 68307, SAO 56323, TD1 2046, TYC 2340-1798-1.[2]
Database references
SIMBADdata
Planet
HD 20367 b data

HD 20367 is a 6th magnitude star approximately 87 light years away[1] in the constellation of Aries, very close to the border with Perseus. It is a yellow dwarf similar to our Sun (spectral type G0V).

Planetary system

In June 2002, a 500-day-period Jupiter-mass extrasolar planet was found orbiting eccentrically around the star.[8]

The HD 20367 planetary system[9]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >1.17 MJ 1.246 ± 0.075 469.5 ± 9.3 0.320 ± 0.090

References

  1. 1 2 3 4 5 6 van Leeuwen, F. (2007). "HIP 15323". Hipparcos, the New Reduction. Retrieved 2010-02-06.
  2. 1 2 3 4 5 HD 20367 -- Star, database entry, SIMBAD. Accessed on line October 1, 2008.
  3. From apparent magnitude and parallax.
  4. 1 2 3 4 5 Star : HD 20367, entry, Extrasolar Planets Encyclopaedia. Accessed on line October 1, 2008.
  5. From absolute visual magnitude, taking MV=4.83 for the Sun.
  6. Table 2, Spectroscopic [Fe/H] for 98 extra-solar planet-host stars. Exploring the probability of planet formation, N. C. Santos, G. Israelian, and M. Mayor, Astronomy and Astrophysics 415 (March 2004), pp. 1153–1166, doi:10.1051/0004-6361:20034469, Bibcode: 2004A&A...415.1153S.
  7. HD 20367, database entry, The Geneva-Copenhagen Survey of Solar neighbourhood, J. Holmberg et al., 2007, CDS ID V/117A. Accessed on line November 19, 2008.
  8. A 1.1 Jupiter-mass planet orbiting HD 20367, Geneva Observatory, October 7, 2002. Accessed on line October 1, 2008.
  9. Table 3, Catalog of Nearby Exoplanets, R. P. Butler et al., The Astrophysical Journal 646, #1 (July 2006), pp. 505–522, Bibcode: 2006ApJ...646..505B, doi:10.1086/504701.

External links

See also

Coordinates: 03h 17m 40.0461s, +31° 07′ 37.372″


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