HD 210702

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Stern
HD 210702
AladinLite
Observation
dates equinoxJ2000.0 , epoch : J2000.0
Constellation Pegasus
Right ascension 22 h 11 m 51.33 s
declination + 16 ° 02 ′ 26 ″
Apparent brightness 5.93 likes
Typing
Known exoplanets 1
B − V color index +0.95 
U − B color index +0.73 
R − I index +0.49 
Spectral class K1 III
Astrometry
Radial velocity (16.0 ± 0.4) km / s
parallax (18.20 ± 0.39)  mas
distance (179.2 ± 3.8)  ly
(54.9 ± 1.2)  pc  
Visual absolute brightness M vis +2.23 mag
Proper movement 
Rec. Share: (−3.15 ± 0.34)  mas / a
Dec. portion: (−18.02 ± 0.33)  mas / a
Physical Properties
Dimensions 1.85  M
radius (4.7 ± 0.6)  R
Luminosity

11.38  L

Effective temperature 5010  K
Metallicity [Fe / H] 0.12
Age 1.4 x 10 9  a
Other names
and catalog entries
Bright Star Catalog HR 8461 [1]
Henry Draper Catalog HD 210702 [2]
Hipparcos catalog HIP 109577 [3]
SAO catalog SAO 107729 [4]
Tycho catalog TYC 1681-1751-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
annotation
  1. ↑ Calculated from apparent brightness and distance.

HD 210702 is an orange giant 182.67 light years from Earth with a right ascension of 22h 11m 51s and a declination of + 16 ° 02 '02 ". It has an apparent magnitude of 5.93 mag. In 2007 John discovered Asher Johnson found an extrasolar planet orbiting this star, named HD 210702 b .

See also

Web links

Individual evidence

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