HD 4208 b

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]

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

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]