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Exoplanetary Scratchpad

[SysBP Img]

Contains a bloated Hot Jupiter expected to be losing its atmosphere. Noted for its similarity to the first transiting exoplanet. Thought to not be so bloated, but then confirmed to really be bloated. Found to have the lowest measured surface gravity of any of the transiting exoplanets, considerably less than Earth. 5th confirmed OGLE planet. The first star observed to experience a stellar flare during the transit of one of its planets. The star is suggested to be active and have a high x-ray luminosity.

OGLE-TR-10 System Web Pages[]

OGLE-TR-10 System In the News[]

Transit Detection of Planet b (2002)[]

The OGLE-III survey (Optical Gravitational Lensing Experiment) announced the detection of 54 short period multi-transiting objects in the Galactic bulge, including OGLE-TR-10 b and OGLE-TR-58 b.

Dopplar Follow Up on Planet b (2004)[]

Radial followup to determine planet's mass and other characteristics

Planet b Confirmed (Apr 2005)[]

Planets existance was confirmed with dopplar spectrometry

Planet b Losing Atmosphere (May 2005)[]

Theories show that Planet b is in a state of "classical hydrodynamical blow-off" and loses its atmosphere at a higher rate than most transiting exoplanets.

Planet b Not Inflated (Jun 2005)[]

Additional transits yield a smaller radius than previously announced, at 1.06 MJ

Planet b Really Is Inflated (Jan 2006)[]

Further analysis reveal that Planet b is infact an inflated Hot Jupiter with a radius of 1.22 RJ.

Chemical Abundance of Parent Star Measured (2005-2006)[]

Surface Gravity Found to Be Less Than Earth (2007)[]

First Stellar Flare Observed During Transit (2009)[]

System Factoids[]

  • About 5000 ly away
  • In Sagitarius, towards the Galactic Center
  • Apparent magnitude of 14.93
  • Older than 1.1 Gigayears

OGLE-TR-10 Star Factoids[]

  • Star is so far and dim that it wasn't catalogued prior to the discovery of the planet.
  • A yellow or orange dwarf (G or K)
  • Slightly more massive than the Sun (1.18 MS)
  • Slightly larger than the Sun (1.18 RS)

Planet b Factoids[]

  • Less massive than Jupiter (0.63MJ), but bloated to be larger (1.26 MJ)
  • Has the weakest surface gravity of any measured exoplanet, less than the Earth.
  • Discovered in 2004.

See Also[]