Pi Mensae

Starbox begin
name = Pi Mensae Starbox observe
epoch = J2000.0
constell = Mensa
ra = RA|05|37|09.89
dec = DEC|–80|28|08.84
appmag_v = +5.67 Starbox character
class = G1IV
r-i = 0.29
v-r = 0.31
b-v = 0.60
u-b = 0.11
variable = none Starbox astrometry
radial_v = +9.4
space_v_u = -103
space_v_v = -57
space_v_w = +4
prop_mo_ra = +311.88
prop_mo_dec = +1050.20
gal_lat = −29.7763
gal_lon = +292.5135
parallax = 54.92
p_error = 0.45
dist_ly = 59.39
dist_pc = 18.21
absmag_v = +4.37 Starbox detail
age = 3.83 × 10⁹
metal = 0.09 (123%)
mass = 1.1
radius = 2.1 ± 0.6
density = 167
gravity = 3.33
rotation = ?
luminosity = 4.73
temperature = 5888 Starbox catalog
names = CD-80°195, CP(D)-80°161, LTT 2359, LFT 429, LHS 208, HR 2022, HD 39091, HIP 26394, SAO 258421, GJ 9189.

Pi (π) Mensae (π Men) is a yellow subgiant star in the constellation of Mensa. This star has a high proper motion. The apparent magnitude is 5.67, which can be visible with the naked eye under exceptionally dark, clear sky. It is nearly 60 ly away. The star dwarfs the Sun in terms of mass, size, luminosity, temperature, and metallicity. It is about 730 million years younger than our Sun. This star ranks 100th on the list of top 100 target stars for the planned Terrestrial Planet Finder mission to search for Earth-like planets around the star.

Planet b

On October 15, 2001, the planet was found orbiting the star. It is one of the most massive planets ever discovered. It orbits in a very eccentric orbit and takes approximately 2064 days (5.65 years) to revolve. Because of its eccentricity that passes through the habitable zone plus a massive superjovian, it would have been disrupted the orbits of Earth-like planets and may have plunged into the star or thrown out into interstellar space.

PlanetboxOrbit
exoplanet = b
mass = >10.35
period = 2063.818
semimajor = 3.29
eccentricity = 0.62

ee also

* Alpha Mensae
* Gliese 777
* HD 70642
* List of stars in Mensa
* List of stars with planets

References

* ( [http://xxx.lanl.gov/abs/astro-ph?papernum=0112084 web Preprint] )

External links

* [http://exoplanet.eu/star.php?st=HD+39091 The Extrasolar Planet Encyclopedia: HD 39091]
* [http://www.extrasolar.net/startour.asp?StarCatId=normal&StarId=151 Extrasolar Vision: Pi Mensae]
* [http://www.solstation.com/stars2/pimensae.htm Solstation: Pi Mensae]
* [http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=Pi+Mensae&NbIdent=1&Radius=10&Radius.unit=arcmin&submit=submit+id SIMBAD: Pi Mensae]
* [http://www.ari.uni-heidelberg.de/aricns/cnspages/4c02556.htm ARICNS: Pi Mensae]