OGLE-TR-111

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Template:Short description

OGLE-TR-111
File:OGLE-TR-111LightCurve.png
A light curve showing the February 17, 2009 planet transit across OGLE-TR-111. Adapted from Adams et al. (2010)[1]
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Carina
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 16.96 - 16.98[3]
Characteristics
Evolutionary stage main sequence[4]
Spectral type K[4]
Variable type planetary transit[3]
Astrometry
Proper motion (μ) RA: −8.952[2] mas/yr
Dec.: +6.216[2] mas/yr
Parallax (π)0.8978±0.0407 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+6.82[5]
Details
MassTemplate:Val[5] Template:Solar mass
RadiusTemplate:Val[5] Template:Solar radius
Luminosity0.4[6] Template:Solar luminosity
Surface gravity (log g)4.12[7] cgs
Temperature4,856[7] K
Metallicity [Fe/H]0.21[7] dex
Rotational velocity (v sin i)5.0[8] km/s
Age6.6[9] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
OGLE-TR-111, V759 Carinae
Database references
SIMBADdata

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OGLE-TR-111 is a yellow dwarf star approximately 3,600 light-years away in the constellation of Carina (the Keel) with an apparent magnitude of about 17. Because its apparent brightness changes when one of its planets transits, the star has been given the variable star designation V759 Carinae.

Planetary system

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.[10] In 2004 radial velocity measurements showed unambiguously that the transiting body is indeed a planet.[11]

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.

Unconfirmed planet candidate

In 2005, evidence of another transit was announced. Planet "OGLE-TR-111c" is a possible extrasolar planet orbiting the star. It was first proposed in 2005 based on preliminary evidence from the Optical Gravitational Lensing Experiment (OGLE) survey. More data is required to confirm this planet candidate. If it is confirmed, OGLE-TR-111 would become one of the first stars with a pair of transiting planets.[5]

Template:OrbitboxPlanet begin Template:OrbitboxPlanet Template:OrbitboxPlanet hypothetical Template:Orbitbox end

See also

References

Template:Reflist

External links

  • Script error: No such module "citation/CS1".

Template:Sky

Template:Stars of Carina

  1. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Adams2010
  2. ↑ a b c d e Cite error: Invalid <ref> tag; no text was provided for refs named dr3
  3. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named gcvs
  4. ↑ a b Cite error: Invalid <ref> tag; no text was provided for refs named gallardo2005
  5. ↑ a b c d Cite error: Invalid <ref> tag; no text was provided for refs named Minniti2007
  6. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named um2019
  7. ↑ a b c Cite error: Invalid <ref> tag; no text was provided for refs named sousa2024
  8. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named vidotto2011
  9. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named yildiz2014
  10. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Udalski2002
  11. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named Pont2004
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