HD 4203
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Pisces |
| Right ascension | 00h 44m 41.20s[1] |
| Declination | +20° 26′ 56.1″[1] |
| Apparent magnitude (V) | 8.68 |
| Characteristics | |
| Spectral type | G5 |
| Astrometry | |
| Proper motion (μ) | RA: 122.97 ± 0.84[1] mas/yr Dec.: -124.29 ± 0.66[1] mas/yr |
| Parallax (π) | 12.95 ± 1.03[1] mas |
| Distance | 250 ± 20 ly (77 ± 6 pc) |
| Details | |
| Mass | 1.12 ± 0.03[2] M☉ |
| Radius | 1.35 ± 0.03[2] R☉ |
| Luminosity | 1.68 ± 0.01[2] L☉ |
| Surface gravity (log g) | 4.22 ± 0.03[2] cgs |
| Temperature | 5666 ± 43[2] K |
| Age | 6.3 ± 1.0[2] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| Extrasolar Planets Encyclopaedia | data |
HD 4203 is a 9th magnitude star located approximately 250 light years away in the constellation Pisces. The star is yellow with spectral type G5. The star has evolved for 9.41 billion years. The star has a gas giant planet orbiting around a high metallicity star.[3]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >1.164 ± 0.067 MJ | 2.07 ± 0.18 | 431.88 ± 0.85 | 0.519 ± 0.027 | — | — |
| c | >2.17 ± 0.52 MJ | — | 6700 ± 4500 | 0.24 ± 0.13 | — | — |
See also
Notes
- 1 2 3 4 5 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 - 1 2 3 4 5 6 Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
- ↑ Vogt, Steven S.; et al. (2002). "Ten Low-Mass Companions from the Keck Precision Velocity Survey". The Astrophysical Journal. 568 (1): 352–362. arXiv:astro-ph/0110378. Bibcode:2002ApJ...568..352V. doi:10.1086/338768.
- ↑ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
External links
Coordinates: 
00h 44m 41.2021s, +20° 26′ 56.138″
This article is issued from Wikipedia - version of the 11/12/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.