HD 16175

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Star
HD 16175
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Andromeda
Right ascension 02 h 37 m 1.91 s
declination + 42 ° 03 ′ 45.5 ″
Apparent brightness 7.28 likes
Typing
Known exoplanets 1
Spectral class G0
Astrometry
Radial velocity (21.5 ± 0.4) km / s
parallax (17.28 ± 0.67)  mas
distance (189 ± 7)  ly
(58 ± 2)  pc  
Visual absolute brightness M vis +3.47 mag
Proper movement 
Rec. Share: (−38.90 ± 0.63)  mas / a
Dec. portion: (−40.37 ± 0.53)  mas / a
Physical Properties
Other names
and catalog entries
Bonn survey BD + 41 ° 496
Henry Draper Catalog HD 16175 [1]
Hipparcos catalog HIP 12191 [2]
SAO catalog SAO 38170 [3]
Tycho catalog TYC 2840-1669-1 [4]Template: Infobox star / maintenance / specification of the TYC catalog
annotation
  1. ↑ Calculated from apparent brightness and distance.

HD 16175 is a sub-giant of the spectral class G0 in the constellation Andromeda, about 200 light years away . It has an apparent visual magnitude of 7.3 mag and is a foreground star to the open star cluster Messier 34 .

The star has a spectroscopic companion with the systematic name HD 16175 b and an orbital period of about 2.7 years. With a minimum mass of approx. 4.4 Jupiter masses, the companion could be an exoplanet or a brown dwarf . The eccentricity of the orbit is estimated to be 0.59 ± 0.11; with an estimated mass of 1.3 solar masses for the central star, the object has a major semi-axis of approx. 2.1  astronomical units .

Web links and individual references

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ Pulkovo radial velocities for 35493 HIP stars
  3. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)