HD 27894

Starbox short
name=HD 27894
epoch=2000
constell=Reticulum
ra=4^h 20^m 47.05^s
dec=-59° 24' 39.01"
spectral=K2V
appmag_v=9.42
dist_ly=138.1
dist_pc=42.37
names=CD-59°829, HIP 20277

HD 27894 is a 9th magnitude star in the constellation of Reticulum. It is an orange dwarf (spectral type K2 V), a type of stars dimmer and cooler than our Sun.

In 2005 the Geneva Extrasolar Planet Search Team announced the discovery of an extrasolar planet orbiting the star.

HD 27894 b

Planetbox begin
name=HD 27894 bPlanetbox orbit
semimajor=0.1221±0.0071
eccentricity=0.049±0.08
period=17.991±0.007
ang_dist=2.879
long_peri=132.9±9.7
t_peri=2,453,275.46±0.48
semi-amp=58.1±0.5Planetbox character
mass=>0.618±0.088Planetbox discovery
discovery_date=2005
discovery_method=Radial velocity
discoverers=Moutou, Mayor,
Bouchy et al.
discovery_status=PublishedThe planet, designated as HD 27894 b, is a gas giant with a mass at least two thirds that of Jupiter, or twice that of Saturn. The distance from the planet to the star is one third compared that of Mercury from our Sun, and it takes almost exactly 18 days to complete one roughly circular orbit.

References

*cite journal | url=http://www.edpsciences.org/articles/aa/abs/2005/31/aa2826-05/aa2826-05.html |author=Moutou et al.|title=The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454 |journal = Astronomy and Astrophysics | volume=439 | year=2005 | pages=367–373|doi=10.1051/0004-6361:20052826|format=abstract

External links

* [http://simbad.u-strasbg.fr/Simbad SIMBAD] [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+27894 entry]
* [http://www.obspm.fr/encycl/encycl.html The Extrasolar Planets Encyclopaedia] [http://www.obspm.fr/encycl/HD27894.html entry]
* [http://www.extrasolar.net Extrasolar Visions] [http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=284 entry]