OGLE-TR-111 b

Planetbox begin
name = OGLE-TR-111 bPlanetbox star
star = OGLE-TR-111
constell = Carina
RA = RA|10|53|17.91
DEC = DEC|-61|24|20.3
dist_ly = ~5,000
dist_pc = ~1,500
class = G or KPlanetbox orbit
position_angle =
semimajor = 0.047 ± 0.001
semimajor_no_units =
eccentricity = 0
period = 4.01610
inclination = 88.1
ang_dist = 0.031
long_peri =
arg_peri =
t_peri = 2,452,330.44867
t_peri_no_jd =
t_transit =
t_transit_no_jd =
t_approach =
semi-amp = Planetbox character
mass = 0.53 ± 0.11
radius = 1.0
density = 700
gravity = 1.25
temperature = Planetbox discovery
discovery_date = 2002
discoverers = Udalski,
Szewczyk,
Żebruń "et al."
discovery_method = Transit and Doppler
discovery_site = flag|Poland
discovery_status = Confirmed

OGLE-TR-111 b is an extrasolar planet approximately 5,000 light-years away in the constellation of Carina (the Keel). The planet is currently the only confirmed planet orbiting the star OGLE-TR-111 (though a possible second planet is plausible).

In 2002 the Optical Gravitational Lensing Experiment (OGLE) survey detected that the light from the star periodically dimmed very slightly every 4 days, indicating a planet-sized body transiting the star. But since the mass of the object had not been measured, it was not clear that it was a true planet, low-mass red dwarf or something else. In 2004 radial velocity measurements showed unambiguously that the transiting body is indeed a planet.

The planet is probably very similar to the other hot Jupiters orbiting nearby stars. Its mass is about half that of Jupiter and it orbits the star at a distance less than 1/20th that of Earth from the Sun.

OGLE-TR-111 b has similar mass and orbital distance as the first transiting planet, HD 209458 b (Osiris). But unlike it, the planet has a radius comparable to Jupiter which is typical to other transiting planets detected by OGLE. However, those other planets tend to be more massive and orbit even closer than typical hot Jupiters. Therefore this planet is an important "missing link" between the different types of transiting planets.

See also

* HD 209458 b
* OGLE-2005-BLG-390Lb
* WASP-11b/HAT-P-10b

External links

*
* ( [http://xxx.lanl.gov/abs/astro-ph/0701356 web Preprint] )
*
* ( [http://xxx.lanl.gov/abs/astro-ph/0408499v1 web Preprint] )