HD 4208 b

HD 4208 b / Xolotlan
Discovery
Discovered by	California and Carnegie; Planet Search
Discovery site	Keck telescope
Discovery date	15 October 2001
Detection method	Doppler Spectroscopy
Orbital characteristics
Apastron	1.736 AU (259,700,000 km)
Periastron	1.564 AU (234,000,000 km)
Semi-major axis	1.650 ± 0.096 AU (246,800,000 ± 14,400,000 km)
Eccentricity	0.052 ± 0.040
Orbital period (sidereal)	828.0 ± 8.1 d; 2.267 y
Time of periastron	2,451,040; ± 120
Argument of periastron	345
Semi-amplitude	19.06 ± 0.73
Star	HD 4208
Physical characteristics
Mass	>0.804 ± 0.073 MJ

HD 4208 b, officially named Xolotlan, is an extrasolar planet discovered by the California and Carnegie Planet Search team using the Keck telescope. The planet is probably somewhat less massive than Jupiter, although only its minimum mass is known. Its orbital distance is 1.67 AU, slightly further than Mars, and its eccentricity is low.^[1]^[2]

The planet HD 4208 b is named Xolotlan. The name was selected in the NameExoWorlds campaign by Nicaragua, during the 100th anniversary of the IAU. Xolotlan is the name of Lake Managua in Nahuatl language.^[3]^[4]

References

^ 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. S2CID 2272917.
^ 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. S2CID 119067572.
^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.

External links

"HD 4208". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-29.

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[Vogt2002-1] 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. S2CID 2272917.

[Butler2006-2] 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. S2CID 119067572.

[3] "Approved names". NameExoworlds. Retrieved 2020-01-02.

[4] "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.

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[2]

[3]

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Discovery
Discovered by	California and Carnegie Planet Search
Discovery site	Keck telescope
Discovery date	15 October 2001
Detection method	Doppler Spectroscopy
Orbital characteristics
Apastron	1.736 AU (259,700,000 km)
Periastron	1.564 AU (234,000,000 km)
Semi-major axis	1.650 ± 0.096 AU (246,800,000 ± 14,400,000 km)
Eccentricity	0.052 ± 0.040
Orbital period (sidereal)	828.0 ± 8.1 d 2.267 y
Time of periastron	2,451,040 ± 120
Argument of periastron	345
Semi-amplitude	19.06 ± 0.73
Star	HD 4208
Physical characteristics
Mass	>0.804 ± 0.073 `M`_J