OGLE-TR-111

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Star in the constellation Carina

title: "OGLE-TR-111" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["carina-(constellation)", "planetary-systems-with-one-confirmed-planet", "planetary-transit-variables", "k-type-main-sequence-stars", "objects-with-variable-star-designations"] description: "Star in the constellation Carina" topic_path: "science/astronomy" source: "https://en.wikipedia.org/wiki/OGLE-TR-111" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Star in the constellation Carina ::

| name = OGLE-TR-111 | image = [[Image:OGLE-TR-111LightCurve.png|250px]] | caption = A light curve showing the February 17, 2009 planet transit across OGLE-TR-111. Adapted from Adams et al. (2010) | epoch = J2000.0 | constell = Carina | ra = | dec = | appmag_v = 16.96 - 16.98 | type = main sequence | class = K | r-i = | v-r = | b-v = | u-b = | variable = planetary transit | radial_v = | prop_mo_ra = −8.952 | prop_mo_dec = +6.216 | parallax = 0.8978 | p_error = 0.0407 | parallax_footnote = | dist_ly = | dist_pc = | space_v_u = | space_v_v = | space_v_w = | absmag_v = +6.82 | source = | mass = | radius = | gravity = 4.12 | luminosity = 0.4 | temperature = 4,856 | metal_fe = 0.21 | rotational_velocity = 5.0 | age_gyr = 6.6 | names = OGLE-TR-111, V759 Carinae | Simbad = OGLE-TR-111 | EPE = OGLE-TR-111

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. 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.

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.

| exoplanet = b | mass = 0.53 ± 0.11 | period = 4.0144479 ± 4.1e-06 | semimajor = 0.047 ± 0.001 | eccentricity = 0 | exoplanet = c|c | mass = 0.7 ± 0.2 | period = 16.0644 ± 0.0050 | semimajor = 0.12 ± 0.01 | eccentricity = 0

References

References

  1. {{cite Gaia DR3. 5242089296564780416
  2. (January 2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports.
  3. (2005). "Characterisation of extrasolar planetary transit candidates". Astronomy and Astrophysics.
  4. (2011). "Prospects for detection of exoplanet magnetic fields through bow-shock observations during transits". Monthly Notices of the Royal Astronomical Society.
  5. (2014). "On the structure and evolution of planets and their host stars - effects of various heating mechanisms on the size of giant gas planets". Monthly Notices of the Royal Astronomical Society.
  6. (2024). "SWEET-Cat: A view on the planetary mass-radius relation". Astronomy and Astrophysics.
  7. (2019). "Beyond the exoplanet mass-radius relation". Astronomy and Astrophysics.
  8. (May 2010). "Lack of Transit Timing Variations of OGLE-TR-111b: A Re-Analysis with Six New Epochs". The Astrophysical Journal.
  9. (2007). "Millimagnitude Photometry for Transiting Extrasolar Planetary Candidates. III. Accurate Radius and Period for OGLE-TR-111-b". The Astrophysical Journal.
  10. (2004). "The "missing link" : A 4-day period transiting exoplanet around OGLE-TR-111". Astronomy and Astrophysics.
  11. (2002). "The Optical Gravitational Lensing Experiment. Planetary and Low-Luminosity Object Transits in the Carina Fields of the Galactic Disk". Acta Astronomica.

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carina-(constellation)planetary-systems-with-one-confirmed-planetplanetary-transit-variablesk-type-main-sequence-starsobjects-with-variable-star-designations