HD 20367: Difference between revisions
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| gravity=4.53 ± 0.22<ref>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}}.</ref> |
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Revision as of 21:31, 1 October 2008
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 03h 17m 40.0461s[1] |
| Declination | +31° 07′ 37.372″[1] |
| Apparent magnitude (V) | 6.410[1] |
| Characteristics | |
| Spectral type | G0[1] |
| B−V color index | 0.523[1] |
| Astrometry | |
| Radial velocity (Rv) | 5.3 ± 2[1] km/s |
| Proper motion (μ) | RA: −103.09[1] mas/yr Dec.: −56.65[1] mas/yr |
| Parallax (π) | 36.86 ± 1.08 mas[1] |
| Distance | 88 ± 3 ly (27.1 ± 0.8 pc) |
| Absolute magnitude (MV) | 4.24[2] |
| Details | |
| Mass | 1.04 ± 0.06[3] M☉ |
| Radius | 1.18 ± 0.32[3] R☉ |
| Luminosity (visual, LV) | 1.72[4] L☉ |
| Surface gravity (log g) | 4.53 ± 0.22[5] cgs |
| Temperature | 5929[3] K |
| Metallicity | [Fe/H] = 0.1[3] |
| Rotational velocity (v sin i) | 3[6] km/s |
| Age | 8.7 × 108 [3] years |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Planet | |
| HD 20367 b | data |
HD 20367 is a 6th magnitude star approximately 88 light years away 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.[7]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.07[8] MJ | 1.25[8] | 500 ± 6[8] | 0.23 ± 0.1[8] | — | — |
See also
References
- ^ a b c d e f g h i j HD 20367 -- Star, database entry, SIMBAD. Accessed on line October 1, 2008.
- ^ From apparent magnitude and parallax.
- ^ a b c d e 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 the Solar neighbourhood, Ages, metallicities, and kinematic properties of ~14000 F and G dwarfs, B. Nordstrom et al., CDS ID V/117. Accessed on line October 1, 2008.
- ^ A 1.1 Jupiter-mass planet orbiting HD 20367, Geneva Observatory, October 7, 2002. Accessed on line October 1, 2008.
- ^ a b c d Planet : HD 20367 b, Extrasolar Planets Encyclopaedia, accessed on line October 1, 2008.
External links
- "Notes for star HD 20367". The Extrasolar Planets Encyclopaedia.
- "HD 20367 – Yellow Main Sequence Star". Extrasolar Visions.
- "HD 20367". Stars with exoplanets.
- HIP 15323 Catalog
- Image HD 20367
- Sky map
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