HD 69830 b

HD 69830 b

Planetbox begin
name=HD 69830 b
Planetbox image


caption = HD 69830 b looking at its star.
"(Artist's impression)"
Planetbox star
star=HD 69830
constell=Puppis
RA=RA|08|18|23.9
DEC=DEC|-12|37|55.8
dist_ly=41
dist_pc=12.6
class=K0V
Planetbox orbit
semimajor=0.0785
eccentricity=0.1±0.04
period=8.667±0.003
ang_dist = 6.23
long_peri=340±26
t_peri=2,453,496.8±0.06
semi-amp=3.51±0.15
Planetbox character
mass=>0.033
temperature=~804
Planetbox discovery
discovery_date=May 18, 2006
discovery_method=Radial velocity
discoverers=Lovis et al.
discovery_status=Published

HD 69830 b is a Neptune-mass or Super-Earth mass extrasolar planet orbiting the star HD 69830. This planet is 10 times more massive than Earth, making it the least massive in the system. It also orbits quite close to its parent star and takes 82/3 days to complete an orbit.

This is likely to be a rocky planet, not a gas giant. If it had formed as a gas giant, it would have stayed that way. [cite journal | journal=Geophysical Research Abstracts | volume=9| issue=07850 |year=2007 | url=http://www.cosis.net/abstracts/EGU2007/07850/EGU2007-J-07850.pdf?PHPSESSID=1eb3a7a98603083dda25d18001ea2a33 | title=The impact of nonthermal loss processes on planet masses from Neptunes to Jupiters |author=H. Lammer "et al."]

If HD 69830 b is a terrestrial planet, models predict that tidal heating would produce a heat flux at the surface of about 55 W/m2. This is 20 times that of Io. [cite journal|title=Tidal Heating of Extra-Solar Planets| first= Brian| last= Jackson| coauthors= Richard Greenberg, Rory Barnes| journal=ApJ| id=arXiv|0803.0026 | year=2008 ]

See also

* HD 69830 c
* HD 69830 d

References

*cite journal | url=http://www.nature.com/nature/journal/v441/n7091/abs/nature04828.html | author=Lovis et al.| title=An extrasolar planetary system with three Neptune-mass planets | journal=Nature | volume=441 |year=2006 | pages=305–309| doi=10.1038/nature04828


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  • HD 69830 d — Planetbox begin name=HD 69830 dPlanetbox image caption=Artist s concept of HD 69830 d as a terrestrial planetPlanetbox star star=HD 69830 constell=Puppis RA= RA|08|18|23.9473 DEC= DEC|−12|37|55.824 dist ly=41 dist pc=12.6 class=K0VPlanetbox orbit …   Wikipedia

  • HD 69830 — Starbox begin name = HD 69830 Starbox observe epoch = J2000.0 constell = Puppis ra = RA|08|18|23.9473 dec = DEC| 12|37|55.824 appmag v = +5.95 Starbox character class = K0V r i = 0.36 v r = 0.40 b v = 0.753 u b = 0.34 variable = none Starbox… …   Wikipedia

  • HD 69830 — Datenbanklinks zu HD 69830 Stern HD 69830 …   Deutsch Wikipedia

  • HD 69830 d — HD 69830 y HD 69830 d Descubrimiento Descubridor Lovis et al …   Wikipedia Español

  • HD 69830 — Vue d artiste de HD 69830. Données d observation (Époque J2000.0) Ascension droite 08h 18m 23,9473s Déclinaison …   Wikipédia en Français

  • Hd 69830 — Vue d artiste de HD 69830. Données observationnelles Système et Époque …   Wikipédia en Français

  • HD 69830 b — HD 69830 b, con HD 69830 de fondo. Visión artística. Descubrimiento Descubridor Lovis et al …   Wikipedia Español

  • HD 69830 c — HD 69830 y HD 69830 c (imagen Celestia) Descubrimiento Descubridor Lovis et al …   Wikipedia Español

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  • HD 69830 c — Planetbox begin name=HD 69830 cPlanetbox image caption = HD 69830 and HD 69830 c (Celestia image) Planetbox star star=HD 69830 constell=Puppis RA=RA|08|18|23.9 DEC=DEC| 12|37|55.8 dist ly=41 dist pc=12.6 class=K0VPlanetbox orbit semimajor=0.186… …   Wikipedia

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