Astronomy:HD 210702 b
From HandWiki
Short description: Extrasolar planet in the constellation Pegasus
| Discovery[1] | |
|---|---|
| Discovered by | Johnson et al. |
| Discovery site | Lick Observatory and Keck Observatory |
| Discovery date | 2007 |
| Doppler spectroscopy | |
| Orbital characteristics[2] | |
| 1.148±0.057 astronomical unit|AU | |
| Eccentricity | 0.028±0.034 |
| Orbital period | 354.10±0.70 d |
| |{{{apsis}}}|helion}} | 2454042±64 JD |
| 189±66 º | |
| Semi-amplitude | 37.8±2.0 m/s |
| Star | HD 210702 |
| Physical characteristics[2] | |
| Mass | ≥1.808±0.097 Jupiter mass |
HD 210702 b is an exoplanet located approximately 177 light-years away[3] in the constellation of Pegasus, orbiting the star HD 210702. This planet, together with HD 175541 b and HD 192699 b, are planets around intermediate mass stars that were announced in April 2007 by Johnson et al. It has at least twice the mass of Jupiter and it orbits with semimajor axis of 1.17 AU, corresponding to a period of 341.1 days.[1]
Planets around intermediate mass subgiants provide clues for the history of formation and migration of planets around A-type stars.
See also
References
- ↑ Jump up to: 1.0 1.1 Johnson, John Asher et al. (2007). "Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants". The Astrophysical Journal 665 (1): 785–793. doi:10.1086/519677. Bibcode: 2007ApJ...665..785J.
- ↑ Jump up to: 2.0 2.1 Luhn, Jacob K. et al. (2019). "Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts". The Astronomical Journal 157 (4): 149. doi:10.3847/1538-3881/aaf5d0. Bibcode: 2019AJ....157..149L.
- ↑ Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
- "HR 8461". webviz.u-strasbg.fr/. http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%208461.
External links
Coordinates: 
22h 11m 51.3311s, +16° 02′ 25.983″
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