HD 188015 b

Planetbox begin
name = HD 188015 b Planetbox star
star = HD 188015
constell = Vulpecula
RA=RA|19|52|04.5435
DEC=DEC|+28|06|01.356
dist_ly=171.66
dist_pc=52.63
class=G5IVPlanetbox orbit
semimajor = 1.203 ± 0.070
semimajor_gigameter = 180.0
periastron = 1.038
periastron_gigameter = 155.3
apastron = 1.368
apastron_gigameter = 204.7
eccentricity = 0.137 ± 0.026
period = 461.2 ± 1.7
period_year = 1.263
period_megasecond = 39.85
speed = 28.47
ang_dist = 23
long_peri = 222° ± 10
t_peri = 2,451,787 ± 17
semi-amp = 37.6 ± 1.2Planetbox character
mass = >1.50 ± 0.13 Planetbox discovery
discovery_date = January 25, 2005
discoverers = Marcy "et al"
discovery_method = Doppler spectroscopy
discovery_site = flag|United States
discovery_status = Published Planetbox catalog
names = HIP 97769 b

The extrasolar planet, designated as HD 188015 b was announced by the California and Carnegie Planet Search team in 2005. Like majority of known planets, it was discovered using the radial velocity method.

The planet has a minimum mass about quarter greater than Jupiter. It orbits the star in a slightly eccentric orbit in a mean distance 20% further than Earth orbits the Sun.

There could be an Earth sized planet in its Trojan field. [cite journal |journal=Astronomy & Astrophysics |DOI=10.1051/0004-6361:20077994 | volume=474|page=1023-1029 |title=Survey of the stability region of hypothetical habitable Trojan planets |author=R. Schwarz, R. Dvorak, Á. Süli, and B. Érdi |url=http://adsabs.harvard.edu/abs/2007A%26A...474.1023S |month=November |year=2007: HD 93083, HD 17051, HD 28185, HD 27442, HD 188015, HD 99109, HD 221287]

The planet, alongside any moons and Trojans, lies completely within the so-called "habitable zone", where life as we know may flourish. The star is nearing the end of its life and will soon start to expand, becoming a red giant. If there is life inhabiting this system, it will likely be destroyed.

Insolation received by HD 188015 b

"Main articles: thermodynamic equilibrium & Climate modeling"

References

*cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/426384 | author=Marcy et al.| title=Five New Extrasolar Planets | journal=The Astrophysical Journal | volume=619 |year=2005 | pages=570–584| doi=10.1086/426384
*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|pages=505–522|year=2006|doi=10.1086/504701|format=abstract ( [http://xxx.lanl.gov/abs/astro-ph?papernum=0607493 web Preprint] )
*cite journal |url=http://www.journals.uchicago.edu/doi/abs/10.1086/504823| author=Raghavan et al. | title=Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems | journal=The Astrophysical Journal | volume=646 |pages=523–542 | year=2006 | doi=10.1086/504823 | format=abstract ( [http://xxx.lanl.gov/abs/astro-ph?papernum=0603836 web Preprint] )

External links

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