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GSC 02652-01324
Orange dwarf star in the constealltion Lyra From Wikipedia, the free encyclopedia
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GSC 02652-01324, also known as V672 Lyrae, is an orange dwarf main sequence star approximately 521 light-years away in the constellation of Lyra (the Lyre).[2][3] It hosts one known exoplanet, TrES-1b.[5]
There is a small, cool companion star at a separation of 13.2 arcseconds, corresponding to 2111 AU.[11]
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Nomenclature
The designation GSC 02652-01324 comes from the Guide Star Catalog.
The star is sometimes called TrES-1,[12] in reference to its planet discovered by the Trans-Atlantic Exoplanet Survey (TrES). The discovery paper[5] and the SIMBAD database[10] use this designation for the planet itself, but other sources call the star TrES-1[13] and the planet TrES-1b,[14] following the standard exoplanet naming convention.
Since the planet transits the star, the star is classified as a planetary transit variable and has received the variable star designation V672 Lyrae. The transits last a little over an hour, about 4% of the orbital period, and the brightness diminishes by a few hundredths of a magnitude.[7]
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Planetary system
In 2004, the exoplanet TrES-1b was found to be orbiting this star by the Trans-Atlantic Exoplanet Survey using the transit method. The planet was detected crossing its parent star using a small 4-inch-diameter (100 mm) telescope. The discovery was confirmed by the Keck Observatory using the radial velocity method, allowing its mass to be determined.[5][15] The planet is a hot Jupiter, with a mass and size similar to those of Jupiter but an orbital period of only three days.
Additional planets in the system are suspected due to transit-timing variations of TrES-1b.[14]
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See also
References
External links
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