XO-3
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Star XO-3 |
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| AladinLite | |||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | giraffe | ||||||
| Right ascension | 04 h 21 m 52.71 s | ||||||
| declination | + 57 ° 49 ′ 1.9 ″ | ||||||
| Apparent brightness | 9.85 likes | ||||||
| Typing | |||||||
| Known exoplanets | 1 | ||||||
| B − V color index | (0.42) | ||||||
| Spectral class | F5 V | ||||||
| Astrometry | |||||||
| parallax | (4.96 ± 0.35) mas | ||||||
| distance | (660) ly (200) pc |
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| Proper movement | |||||||
| Rec. Share: | (−2.98) mas / a | ||||||
| Dec. portion: | (5.58) mas / a | ||||||
| Physical Properties | |||||||
| Dimensions | 1.41 ± 0.08 M ☉ | ||||||
| radius | 1.49 ± 0.08 R ☉ | ||||||
| Luminosity |
2.9 +0.6−0.5 L ☉ |
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| Effective temperature | 6781 ± 44 K | ||||||
| Metallicity [Fe / H] | −0.08 ± 0.04 | ||||||
| Age | 2.82 ± 0.82 bill. A | ||||||
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Other names and catalog entries |
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XO-3 is a main sequence star of spectral class F in the constellation Giraffe, about 600 light years away . It has an apparent magnitude of 9.9 mag.
In 2007, Christopher M. Johns-Krull discovered an exoplanet orbiting this star. This is called XO-3b .