HD 192699 b

HD 192699 b / Khomsa
Discovery
Discovered by	Johnson et al.
Discovery site	Lick Observatory and Keck Observatory
Discovery date	2007
Detection method	Doppler spectroscopy
Orbital characteristics
Semi-major axis	1.063±0.049 astronomical unit\|AU
Eccentricity	0.082±0.041
Orbital period	340.94±0.92 d
\|{{{apsis}}}\|helion}}	2454079±36 JD
\|{{{apsis}}}\|helion}}	87±37 º
Semi-amplitude	49.3±2.1 m/s
Star	HD 192699
Physical characteristics
Mass	≥2.096±0.093 MJ

Short description: Extrasolar planet in the constellation Aquila

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 (|♃|J}}}}}}). 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.

References

↑ ^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.
↑ ^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.
↑ "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results.
↑ "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/.

External links

"HD 192699". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+192699.

Coordinates: 20^h 16^m 06.0043^s, +04° 34′ 50.863″

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Original source: https://en.wikipedia.org/wiki/HD 192699 b. Read more

[Johnson2007-1] 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.

[Luhn2019-2] 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.

[Gaia_DR2-3] 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.

[4] "Approved names" (in en). http://www.nameexoworlds.iau.org/final-results.

[5] "International Astronomical Union | IAU". https://www.iau.org/news/pressreleases/detail/iau1912/.

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HD 192699 b

Topic: Astronomy

See also

References

External links

Discovery^[1]
Discovered by	Johnson et al.
Discovery site	Lick Observatory and Keck Observatory
Discovery date	2007
Detection method	Doppler spectroscopy
Orbital characteristics^[2]
Semi-major axis	1.063±0.049 astronomical unit\|AU
Eccentricity	0.082±0.041
Orbital period	340.94±0.92 d
\|{{{apsis}}}\|helion}}	2454079±36 JD
\|{{{apsis}}}\|helion}}	87±37 º
Semi-amplitude	49.3±2.1 m/s
Star	HD 192699
Physical characteristics^[2]
Mass	≥2.096±0.093 M_J