BD-10°3166
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BD-10°3166 is a dim 10th magnitude star in the constellation of Crater. Like the Sun, it is a yellow dwarf, but is slightly more massive (spectral type G4 V; some sources give unlikely type K0 V). It was inconspicuous enough not be included in the Henry Draper (HD) catalogue. The Hipparcos satellite also did not study it, so its true distance is poorly known. A recent photometric distance measurement gives an approximate distance of 220 light years. Although the estimate is only crude, it is probably good enought to exclude a suggested companion star, LP 731-076, being its true binary star companion.
The star is very enriched with metals, being about three times as metal-rich as the Sun. Planets are common around such stars, and BD-10°3166 is not an exception. In 2000, the California and Carnegie Planet Search team discovered an extrasolar planet*orbiting the star.
BD-10°3166 b
BD-10°3166 b is a so-called "hot Jupiter", a planet that orbits its parent star in a very close orbit. Distance to the star is less than 1/20th Earth's distance from the Sun. No transits by the planet have been detected, so the planet's orbital plane cannot be exactly aligned with our direction of view.
References
External links
- [SIMBAD] [star entry] [planet entry]
- [The Extrasolar Planets Encyclopaedia] [entry]
- [BD-10º3166] at Extrasolar Visions
- [BD-10º3166 b] at Extrasolar Visions
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