HD 210702
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Stern HD 210702 |
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| AladinLite | |||||||||||
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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 | ||||||||||
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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 .