HD 168746
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Star HD 168746 |
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| AladinLite | |||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Snake | ||||||||||
| Right ascension | 18 h 21 m 49.78 s | ||||||||||
| declination | -11 ° 55 ′ 21.7 ″ | ||||||||||
| Apparent brightness | 7.95 likes | ||||||||||
| Typing | |||||||||||
| Known exoplanets | 1 | ||||||||||
| B − V color index | +0.71 | ||||||||||
| Spectral class | G5 | ||||||||||
| Astrometry | |||||||||||
| Radial velocity | (−25.7 ± 0.1) km / s | ||||||||||
| parallax | (23.40 ± 0.76) mas | ||||||||||
| distance | (139.4 ± 4.5) ly (42.7 ± 1.4) pc |
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| Visual absolute brightness M vis | +4.80 mag | ||||||||||
| Proper movement | |||||||||||
| Rec. Share: | (−23.35 ± 0.72) mas / a | ||||||||||
| Dec. portion: | (−68.93 ± 0.52) mas / a | ||||||||||
| Physical Properties | |||||||||||
| Dimensions | approx. 0.9 M ☉ | ||||||||||
| radius | approx. 1.1 R ☉ | ||||||||||
| Effective temperature | approx. 5610 K | ||||||||||
| Metallicity [Fe / H] | −0.06 | ||||||||||
| Age | approx. 4 · 10 9 a | ||||||||||
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Other names and catalog entries |
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HD 168746 is a main sequence star of spectral class G5, about 140 light years from Earth, located on the border between the constellations Serpens Cauda and Scutum . It has an apparent magnitude of 7.95 mag. The star is orbited by an exoplanet called HD 168746 b.
Exoplanet
HD 168746 b orbits the central star with a period of 6.40 days and has a minimum mass of 0.23 Jupiter masses, which corresponds to about 77% of the mass of Saturn. The exoplanet was discovered using the radial velocity method. Its discovery was made in 2002 by Francesco Pepe et al. released.