Musica (star)
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Stern Musica |
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| AladinLite | |||||||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | dolphin | ||||||||||||||
| Right ascension | 20 h 58 m 25.93 s | ||||||||||||||
| declination | + 10 ° 50 ′ 21.4 ″ | ||||||||||||||
| Apparent brightness | 5.52 mag | ||||||||||||||
| Typing | |||||||||||||||
| Known exoplanets | 1 | ||||||||||||||
| B − V color index | +0.93 | ||||||||||||||
| Spectral class | G6 III | ||||||||||||||
| Astrometry | |||||||||||||||
| parallax | (13.28 ± 0.31) mas | ||||||||||||||
| distance | (246 ± 6) ly (75.3 ± 1.8) pc |
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| Visual absolute brightness M vis | +1.2 mag | ||||||||||||||
| Proper movement | |||||||||||||||
| Rec. Share: | (−48.88 ± 1.07) mas / a | ||||||||||||||
| Dec. portion: | (−34.42 ± 0.61) mas / a | ||||||||||||||
| Physical Properties | |||||||||||||||
| Dimensions | 2.3 M ☉ | ||||||||||||||
| radius | 8.5 R ☉ | ||||||||||||||
| Effective temperature | 5000 K | ||||||||||||||
| Metallicity [Fe / H] | −0.05 | ||||||||||||||
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Other names and catalog entries |
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Musica ( Flamsteed designation 18 Delphini) is a giant of the spectral class G6, about 250 light years from Earth . It has an apparent magnitude of 5.52 mag. In 2008, Bun'ei Satō et al. published the discovery of an extrasolar planet around this star. This is called Arion .
Web links
Individual evidence
- ^ Hipparcos catalog
- ↑ a b SIMBAD database
- ↑ Bright Star Catalog
- ^ A b Floor van Leeuwen: Hipparcos, the New Reduction of the Raw Data ; in: Astrophysics and Space Science Library, Vol. 350 (2007), bibcode : 2007ASSL..350 ..... V
- ↑ 2nd Cat. of Radial Velocities with Astrometric Data (Kharchenko +, 2007)