HD 155358
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Stern HD 155358 |
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| AladinLite | |||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Hercules | ||||||
| Right ascension | 17 h 09 m 34.6 s | ||||||
| declination | + 33 ° 21 ′ 21 ″ | ||||||
| Apparent brightness | 7.28 likes | ||||||
| Typing | |||||||
| Known exoplanets | 2 | ||||||
| B − V color index | +0.52 | ||||||
| Spectral class | G0 | ||||||
| Astrometry | |||||||
| Radial velocity | (−9.0 ± 0.4) km / s | ||||||
| parallax | (22.67 ± 0.48) mas | ||||||
| distance | (144 ± 3) ly (44.1 ± 0.9) pc |
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| Visual absolute brightness M vis | approx. +4.1 mag | ||||||
| Proper movement | |||||||
| Rec. Share: | (−222.45 ± 0.41) mas / a | ||||||
| Dec. portion: | (−215.97 ± 0.50) mas / a | ||||||
| Physical Properties | |||||||
| Dimensions | 0.87 M ☉ | ||||||
| Effective temperature | 5760 K | ||||||
| Metallicity [Fe / H] | −0.68 | ||||||
| Age | 10 · 10 9 a | ||||||
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Other names and catalog entries |
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HD 155358 is a yellow dwarf orbited by at least two planets , HD 155358 b and HD 155358 c . The star has the spectral class G0V. Its mass is around 0.87 solar masses . Its companions were both discovered in 2007 through measurements of its radial velocity .
Web links
Individual evidence
- ↑ a b c Hipparcos catalog (ESA 1997)
- ↑ Pulkovo radial velocities for 35493 HIP stars
- ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)
- ↑ estimated based on apparent brightness and distance