HD 179949

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**HD 179949**
Observation data Equinox 2000
Constellation	Sagittarius
Right ascension	19^h 15^m 33.23^s
Declination	-24° 10' 45.67"
Apparent magnitude (V)	6.25
Distance	88.18 ly (27.05 pc)
Spectral type	F8V
Other designations
GJ 749, CD-24°15161, HR 7291, HIP 94645

HD 179949 is a 6th magnitude star in the constellation of Sagittarius. It is a yellow-white dwarf (spectral class F8 V), a type of star hotter and more luminous than our Sun. The star is located at 88 light years from Earth and might be visible under exceptionally good conditions to an experienced observer without technical aid. However, usually binoculars are needed.

A planet is known orbiting the star.

[edit] HD 179949 b

**HD 179949 b**
Orbital elements
Extrasolar planet		Lists of extrasolar planets
Semimajor axis	(a)	0.0443±0.0026 AU
Eccentricity	(e)	0.022±0.015
Orbital period	(P)	3.092514±0.000032 d
Inclination	(i)	?°
Longitude of periastron	(ω)	192°
Time of periastron	(τ)	2,451,002.32±0.44 JD
Physical characteristics
Mass	(m)	>0.916±0.076 M_J
Radius	(r)	? R_J
Density	(ρ)	? kg/m³
Temperature	(T)	? K
Discovery information
Discovery date		2000
Discoverer(s)		C. Tinney, Butler, Marcy et al.
Detection method		Radial velocity
Discovery status		Published

The extrasolar planet, designated as HD 179949 b, was the first discovery by the Anglo-Australian Planet Search at the Anglo-Australian Observatory. The planet is a so-called "hot Jupiter", a Jupiter-mass planet orbiting very close to its parent star. In this case, orbital distance is almost tenth that of Mercury from the Sun. One orbital revolution lasts only about 3 days.

Our inner solar system superimposed behind the orbits of the planets HD 179949 b, HD 164427 b, Epsilon Reticuli ab, and Mu Arae b (each planet has its parent star labeled next to it -- all parent stars are in the center)