HD 30177
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Dorado |
| Right ascension | 04h 41m 54.373s[1] |
| Declination | –58° 01′ 14.72″[1] |
| Apparent magnitude (V) | 8.41 |
| Characteristics | |
| Spectral type | G8V |
| Astrometry | |
| Proper motion (μ) | RA: 66.15 ± 0.74[1] mas/yr Dec.: -11.45 ± 0.77[1] mas/yr |
| Parallax (π) | 18.93 ± 0.63[1] mas |
| Distance | 172 ± 6 ly (53 ± 2 pc) |
| Absolute magnitude (MV) | 4.72 |
| Details | |
| Mass | 1.09 ± 0.02[2] M☉ |
| Radius | 1.54 ± 0.03[2] R☉ |
| Luminosity | 1.04 ± 0.01[2] L☉ |
| Surface gravity (log g) | 4.38 ± 0.03[2] cgs |
| Temperature | 5607 ± 47[2] K |
| Age | 4.8 ± 1.5[2] Gyr |
| Other designations | |
HD 30177 is an 8th magnitude star located approximately 178 light-years (55 parsecs) away in the constellation Dorado. The star is a yellow dwarf, a type of yellow star that fuses hydrogen in its core. Since if this star is a late G-type, it is cooler and less massive than the Sun, but larger in radius. It is 1.8 times older than our Sun. This star system contains a single extrasolar planet.[3]
Planetary system
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >10.45 ± 0.88 MJ | 3.95 ± 0.26 | 2770 ± 100 | 0.193 ±0.025 | — | — |
See also
References
- 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.
- ↑ Tinney, C. G.; et al. (2003). "Four New Planets Orbiting Metal-enriched Stars". The Astrophysical Journal. 587 (1): 423–428. arXiv:astro-ph/0207128. Bibcode:2003ApJ...587..423T. doi:10.1086/368068.
- ↑ 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
- "Notes for star HD 30177". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-29.
Coordinates: 
04h 41m 54.3731s, −58° 01′ 14.725″
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