HD 4208

Starbox short
name=HD 4208
epoch=J2000.0
constell=Sculptor
ra=0^h 44^m 26.65^s
dec=-26° 30' 56.45"
spectral=G5V
appmag_v=7.79
dist_ly=106.6
dist_pc=32.70
names=CD-27°223, HIP 3479

HD 4208 is an 8th magnitude star in the constellation of Sculptor. Spectral type of the star G5 V. It is a yellow dwarf similar to our Sun, only slightly cooler and dimmer. It is not visible to the unaided eye, but with binoculars or small telescope it should be easy target.

In 2001 a planet was discovered orbiting the star.

HD 4208 b

Planetbox begin
name=HD 4208 bPlanetbox orbit
semimajor=1.650±0.096
eccentricity=0.052±0.040
period=828.0±8.1
ang_dist=49
long_peri=345
t_peri=2,451,040 ±120
semi-amp=19.06±0.73Planetbox character
mass=>0.804±0.073Planetbox discovery
discovery_date=2001
discovery_method=Radial velocity
discovery_site=California and Carnegie Planet Search
discoverers=Vogt, Butler,
Marcy et al.
discovery_status=PublishedThe extrasolar planet, designated as HD 4208 b, was 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. It orbits the star at a distance of 1.67 AU, slightly further than Mars orbits the Sun. Eccentricity is very low, meaning that the orbit is remarkably circular. Unfortunately, if the planet has any large moons, they are probably too cold to support life unless they have subsurface oceans like Jupiter's moon Europa is suspected to have.

References

*cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/338768 | author=Vogt "et al." | title=Ten Low-Mass Companions from the Keck Precision Velocity Survey | journal=The Astrophysical Journal | volume=568 | issue=1 |year=2002 | pages=352–362 | doi=10.1086/338768
*cite journal|url=http://www.journals.uchicago.edu/doi/abs/10.1086/504701 | author=Butler "et al." | title=Catalog of Nearby Exoplanets | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505–522 | year=2006 | doi=10.1086/504701 | format=abstract ( [http://xxx.lanl.gov/abs/astro-ph?papernum=0607493 web Preprint] )

External links

* [http://simbad.u-strasbg.fr/Simbad SIMBAD] [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+4208 star entry] , [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+4208+B planet entry]
* [http://www.obspm.fr/encycl/encycl.html The Extrasolar Planets Encyclopaedia] [http://www.obspm.fr/encycl/HD4208.html entry]
* [http://www.extrasolar.net/startour.asp?StarCatId=normal&StarId=149 "HD 4208"] at Extrasolar Visions
* [http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=185 "HD 4208 b"] at Extrasolar Visions