HD 99109

Starbox begin
name = HD 99109 Starbox observe
epoch = J2000.0
constell = Leo
ra = RA|11|24|17.358
dec = DEC|-01|31|44.674
appmag_v = +9.10 Starbox character
class = K0V
b-v = +0.87
u-b =
variable = Suspected Starbox astrometry
radial_v =
prop_mo_ra = -179.71
prop_mo_dec = -160.61
gal_lat = +54.4840
gal_lon = 263.2386
parallax = 16.54
p_error = 1.31
dist_ly = 197.19±15.7
dist_pc = 60.46±4.8
absmag_v = +5.19 Starbox detail
age = >12.2
metal = 2.07 × Sun
mass = 0.93
radius =
rotation =
luminosity = 0.724
temperature = 5272 Starbox catalog
names = BD-00°2437, HD 99109 HIP 55664, SAO 138182Starbox reference
Simbad = HD+99109
ARICNS =

HD 99109 is an orange dwarf star approximately 197 light-years away in the constellation of Leo. The star is though to have about 93% as massive, probably smaller, and 72.4% the luminosity of the Sun. It is over twice the abundance of iron relative to hydrogen than the Sun. The star is one and half degree away from the celestial equator to the south. As of 2006, one extrasolar planet has been confirmed to be orbiting the star. [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 | issue=1 | pages=505 – 522 | year=2006 | doi=10.1086/504701 ( [http://xxx.lanl.gov/abs/astro-ph/0607493 web Preprint] )]

Planetary system

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

OrbitboxPlanet
exoplanet = b
mass = >0.502±0.07
semimajor = 1.105±0.065
period = 439.3±5.6
eccentricity = 0.09±0.16

References

External links

*