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 |
| Distance | 87 ± 1 ly (26.7 ± 0.4 pc) |
| Absolute magnitude (MV) | 4.24[3] |
| Details | |
| Mass | 1.04 ± 0.06[4] M☉ |
| Radius | 1.18 ± 0.32[4] R☉ |
| Luminosity (visual, LV) | 1.72[5] L☉ |
| Surface gravity (log g) | 4.53 ± 0.22[6] cgs |
| Temperature | 5929[4] K |
| Metallicity | [Fe/H] = 0.1[4] |
| Rotational velocity (v sin i) | 3[7] km/s |
| Age | 8.7 × 108 [4] years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| 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).
HD 20367.jpg
Planetary system
In June 2002, a 500-day-period Jupiter-mass extrasolar planet was found orbiting eccentrically around the star.[8]
| 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 2 3 4 5 6 van Leeuwen, F. (2007). "HIP 15323". Hipparcos, the New Reduction. Retrieved 2010-02-06.
- 1 2 3 4 5 HD 20367 -- Star, database entry, SIMBAD. Accessed on line October 1, 2008.
- ↑ From apparent magnitude and parallax.
- 1 2 3 4 5 Star : HD 20367, entry, Extrasolar Planets Encyclopaedia. Accessed on line October 1, 2008.
- ↑ From absolute visual magnitude, taking MV=4.83 for the Sun.
- ↑ 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.
- ↑ 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.
- ↑ A 1.1 Jupiter-mass planet orbiting HD 20367, Geneva Observatory, October 7, 2002. Accessed on line October 1, 2008.
- ↑ 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
- "Notes for star HD 20367". The Extrasolar Planets Encyclopaedia.
- "HD 20367". Stars with exoplanets.
- HIP 15323 Catalog
- Image HD 20367
- Sky map
See also
Coordinates: 
03h 17m 40.0461s, +31° 07′ 37.372″
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