HD 106252
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Stern HD 106252 |
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| AladinLite | |||||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Virgin | ||||||||||||
| Right ascension | 12 h 13 m 29.51 s | ||||||||||||
| declination | + 10 ° 02 ′ 29.9 ″ | ||||||||||||
| Apparent brightness | 7.41 mag | ||||||||||||
| Typing | |||||||||||||
| Spectral class | G0 | ||||||||||||
| Astrometry | |||||||||||||
| Radial velocity | (+15.3 ± 0.2) km / s | ||||||||||||
| parallax | (26.52 ± 0.57) mas | ||||||||||||
| distance | (123.0 ± 2.6) ly (37.71 ± 0.81) pc |
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| Proper movement | |||||||||||||
| Rec. Share: | (+23.76 ± 0.69) mas / a | ||||||||||||
| Dec. portion: | (−279.50 ± 0.32) mas / a | ||||||||||||
| Physical Properties | |||||||||||||
| Dimensions | approx. 1.1 M ☉ | ||||||||||||
| radius | approx. 1.1 R ☉ | ||||||||||||
| Effective temperature | 5754 K | ||||||||||||
| Metallicity [Fe / H] | −0.16 | ||||||||||||
| Age | approx. 5 · 10 9 a | ||||||||||||
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Other names and catalog entries |
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HD 106252 is a yellow dwarf about 120 light years from Earth with a right ascension of 12 h 13 m 30 s and a declination of + 10 ° 02 ′ 30 ″ in the constellation Virgo. It has an apparent magnitude of around 7.4 mag. In 2002 Fischer et al. with the help of the radial velocity method, a presumably substellar companion that orbits this star with an orbital period of around 1500 days. This has the systematic designation HD 106252 b and has a minimum mass of approximately 7 Jupiter's masses. According to astrometric estimates of mass, it is most likely a brown dwarf .
Web links
Individual evidence
- ↑ a b c Hipparcos catalog (ESA 1997)
- ↑ Pulkovo radial velocities for 35493 HIP stars
- ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)
- ^ S. Reffert, A. Quirrenbach: Mass constraints on substellar companion candidates from the re-reduced Hipparcos intermediate astrometric data: nine confirmed planets and two confirmed brown dwarfs . In: Astronomy & Astrophysics . tape 527 , A140, February 11, 2011, ISSN 0004-6361 , doi : 10.1051 / 0004-6361 / 201015861 , bibcode : 2011A & A ... 527A.140R .