HD 210702
Stern HD 210702 |
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AladinLite | |||||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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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 |
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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 ☉ |
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Effective temperature | 5010 K | ||||||||||
Metallicity [Fe / H] | 0.12 | ||||||||||
Age | 1.4 x 10 9 a | ||||||||||
Other names and catalog entries |
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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 .