| Discovery [1] | |
|---|---|
| Discovered by | Johnson et al. |
| Discovery site | Lick Observatory and Keck Observatory |
| Discovery date | 2007 |
| Doppler spectroscopy | |
| Orbital characteristics [2] | |
| 1.063±0.049 AU | |
| Eccentricity | 0.082±0.041 |
| 340.94±0.92 d | |
| 2454079±36 JD | |
| 87±37 º | |
| Semi-amplitude | 49.3±2.1 m/s |
| Star | HD 192699 |
| Physical characteristics [2] | |
| Mass | ≥2.096±0.093 MJ |
HD 192699 b, also named Khomsa, is an exoplanet located approximately 214 light-years away [3] in the constellation of Aquila, orbiting the star HD 192699. This planet was discovered in April 2007, massing at least 2.5 times the mass of Jupiter ( MJ). Despite its orbital distance more than that of Earth, the orbital period is less than a year, because the parent star is more massive than the Sun. [1]
The planet HD 192699 b is named Khomsa. The name was selected in the NameExoWorlds campaign by Tunisia, during the 100th anniversary of the IAU. Khomsa is a palm-shaped amulet that is popular in Tunisia. [4] [5]
The existence of this planet around a 1.68 solar mass ( M☉) star provides evidence for the existence of planetary systems around A-type main sequence stars.
- ^ a b 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. arXiv: 0704.2455. Bibcode: 2007ApJ...665..785J. doi: 10.1086/519677.
- ^ a b 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. arXiv: 1811.03043. Bibcode: 2019AJ....157..149L. doi: 10.3847/1538-3881/aaf5d0. S2CID 102486961.
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- "HD 192699". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-25.
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 | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |
| Discovery [1] | |
|---|---|
| Discovered by | Johnson et al. |
| Discovery site | Lick Observatory and Keck Observatory |
| Discovery date | 2007 |
| Doppler spectroscopy | |
| Orbital characteristics [2] | |
| 1.063±0.049 AU | |
| Eccentricity | 0.082±0.041 |
| 340.94±0.92 d | |
| 2454079±36 JD | |
| 87±37 º | |
| Semi-amplitude | 49.3±2.1 m/s |
| Star | HD 192699 |
| Physical characteristics [2] | |
| Mass | ≥2.096±0.093 MJ |
HD 192699 b, also named Khomsa, is an exoplanet located approximately 214 light-years away [3] in the constellation of Aquila, orbiting the star HD 192699. This planet was discovered in April 2007, massing at least 2.5 times the mass of Jupiter ( MJ). Despite its orbital distance more than that of Earth, the orbital period is less than a year, because the parent star is more massive than the Sun. [1]
The planet HD 192699 b is named Khomsa. The name was selected in the NameExoWorlds campaign by Tunisia, during the 100th anniversary of the IAU. Khomsa is a palm-shaped amulet that is popular in Tunisia. [4] [5]
The existence of this planet around a 1.68 solar mass ( M☉) star provides evidence for the existence of planetary systems around A-type main sequence stars.
- ^ a b 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. arXiv: 0704.2455. Bibcode: 2007ApJ...665..785J. doi: 10.1086/519677.
- ^ a b 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. arXiv: 1811.03043. Bibcode: 2019AJ....157..149L. doi: 10.3847/1538-3881/aaf5d0. S2CID 102486961.
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- "HD 192699". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-25.
| Stars |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||
| |||||||||||||
| Nebulae |
| ||||||||||||
| Galaxies |
| ||||||||||||
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| This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |