HD 162020
Stern HD 162020 |
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AladinLite | |||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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Constellation | Scorpio | ||||||||
Right ascension | 17 h 50 m 38.4 s | ||||||||
declination | -40 ° 19 ′ 6 ″ | ||||||||
Apparent brightness | 9.1 mag | ||||||||
Typing | |||||||||
Spectral class | K3 V | ||||||||
Astrometry | |||||||||
Radial velocity | (−27.2 ± 1.9) km / s | ||||||||
parallax | (33.98 ± 1.31) mas | ||||||||
distance | (96 ± 4) ly (29 ± 1) pc |
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Visual absolute brightness M vis | approx. +6.8 mag | ||||||||
Proper movement | |||||||||
Rec. Share: | (+17.27 ± 2.20) mas / a | ||||||||
Dec. portion: | (−26.84 ± 1.14) mas / a | ||||||||
Physical Properties | |||||||||
Dimensions | 0.75 M ☉ | ||||||||
Luminosity |
0.25 L ☉ |
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Effective temperature | (4830 ± 80) K. | ||||||||
Metallicity [Fe / H] | 0.01 ± 0.11 | ||||||||
Other names and catalog entries |
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HD 162020 is a star of spectral class K3 with an apparent magnitude of 9.1 mag, about 30 parsecs (100 light years ) away from Earth . The star has about three quarters of the mass of our sun .
The star is orbited by a low-mass spectroscopic companion, which could be a red dwarf or a brown dwarf. The object has a minimum mass of 14 Jupiter and an orbital period of 8.4 days.
Individual evidence
- ↑ a b Hipparcos catalog (ESA 1997)
- ↑ Pulkovo radial velocities for 35493 HIP stars
- ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)
- ↑ estimated based on apparent brightness and distance