HD 168746

Starbox short
name=HD 168746
epoch=2000
constell=Serpens
ra=18^h 21^m 49.78^s
dec=-11° 55' 21.66"
spectral=G5
appmag_v=7.95
dist_ly=140.6
dist_pc=43.12
names=BD-11°4606, HIP 90004

HD 168746 is an 8th magnitude star in the constellation of Serpens. It is very similar to our Sun, a yellow dwarf star (spectral class G5 V). It is not visible to the unaided eye, but is easily visible with binoculars or a small telescope. In 2000 a planet was announced orbiting it.

HD 168746 b

Extrasolar Planet
name=HD 168746 b
semimajor=0.065
eccentricity=0.081 ± 0.029
period=6.403 ± 0.001
inclination=?
ang_dist=2
long_peri=16.30 ± 20.88
t_peri=2,451,994.7 ± 0.4
semi-amp=28.6 ± 1.7
mass=>0.23
radius=?
density=?
gravity=?
temperature=?
discoverers=Pepe, Mayor,
Galland et al.
discovery_method=CORALIE
discovery_location=France
discovery_date =2000

HD 168746 b is an extrasolar planet orbiting the star. It has a minimum mass about one fourth that of Jupiter, so it is most likely a low mass gas giant. It orbits very near the star in a so-called "torch orbit" completing one revolution in only about six and half days.

References

*cite journal | url=http://www.edpsciences.org/papers/aa/full/2002/23/aah3477/aah3477.html |author=Pepe et al.|title=The CORALIE survey for southern extra-solar planets VII Two short-period Saturnian companions to HD 108147 and HD 168746|journal = Astronomy and Astrophysics | volume=388 | year=2002 | pages=632–638 | doi=10.1051/0004-6361:20020433

External links

* [http://simbad.u-strasbg.fr/Simbad SIMBAD] [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+168746 star entry] , [http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+168746+B planet entry]
* [http://www.obspm.fr/encycl/encycl.html The Extrasolar Planets Encyclopaedia] [http://www.obspm.fr/encycl/HD168746.html entry]
* [http://www.extrasolar.net Extrasolar Visions] [http://www.extrasolar.net/planettour.asp?StarCatId=normal&PlanetId=133 entry]