- HD 70642
Starbox begin
name = HD 70642 Starbox observe
epoch =J2000.0
constell =Puppis
ra = RA|8|21|28.1361
dec = DEC|–39|42|19.474
appmag_v = +7.18 Starbox character
class = G5V
r-i = 0.32
v-r = 0.35
b-v = 0.70
u-b = 0.28
variable = none Starbox astrometry
radial_v = +48.1
prop_mo_ra = −202.07
prop_mo_dec = 225.59
parallax = 34.77
p_error = 0.60
dist_ly = 93.8
dist_pc = 28.76
absmag_v = +4.89 Starbox detail
age = 3.8 × 109
metal = 0.16 ± 0.02 Fe/H
(145% Sun)
mass = 1 ± 0.05
radius = 1.01
gravity = 4.72
rotation = ?
luminosity = 0.96
temperature = 5533 Starbox catalog
names = CD-39°4247, CP(D)-39°2308, LTT 3116, HIP 40952, Gl 304, SAO 199126HD 70642 is a
yellow dwarf star in theconstellation ofPuppis . This star has about the same mass and radius as theSun , is slightly cooler and less luminous, and is richer in abundance ofiron relative tohydrogen .Planetary system
A long period
planet companion to HD 70642 was announced in2003 . This planet orbits in a circular orbit (e=0.1) at 3.3 AU. [cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/378185 | author=Carter "et al." | title=A Planet in a Circular Orbit with a 6 Year Period | journal=TheAstrophysical Journal | year=2003 | volume=593 | issue=1 | pages=L43 – L46 | doi=10.1086/378185] The star is so like to Sol that its habitable zone is in the same place (~ 1 AU). The jovian ensures the stability of an Earth-mass planet at 1 AU. [cite journal |author= HINSE T., MICHELSON R., JOERGENSEN U., GOZDIEWSKI K. & MIKKOLA S.|year= 2008 |title=Dynamics and stability of telluric planets within the habitable zone of extrasolar planetary systems - Numerical simulations of test particles within the HD 4208 and HD 70642 systems |journal=Astronomy & Astrophysics | issue=488 |pages=1133] This system is more similar to conditions in oursolar system than is any other currently known planetary system.PlanetboxOrbit
exoplanet = b
mass = >2 (± 0.06)
period = 2231 (± 400)
semimajor = 3.3
eccentricity = 0.1 (± 0.06)See also
*
Gliese 777
*List of stars with confirmed extrasolar planets
*Pi Mensae References
External links
* [http://exoplanet.eu/star.php?st=HD+70642 The Extrasolar Planet Encyclopedia: HD 70642]
* [http://www.extrasolar.net/startour.asp?StarCatId=normal&StarId=212 Extrasolar Vision: HD 70642]
* [http://www.solstation.com/stars2/hd70642.htm Solstation: HD 70642 / CD-39 4247]
* [http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+70642&NbIdent=1&Radius=10&Radius.unit=arcmin&submit=submit+id SIMBAD: HD 70642]
* [http://www.ari.uni-heidelberg.de/aricns/cnspages/4c00626.htm ARICNS: HD 70642]
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