Peter 849
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Star gliese 849 |
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| AladinLite | |||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Aquarius | ||||||||
| Right ascension | 22 h 09 m 40.35 s | ||||||||
| declination | -04 ° 38 ′ 26.6 ″ | ||||||||
| Apparent brightness | 10.41 mag | ||||||||
| Typing | |||||||||
| Known exoplanets | 1 | ||||||||
| B − V color index | +1.51 | ||||||||
| U − B color index | +1.13 | ||||||||
| Spectral class | M3 | ||||||||
| Astrometry | |||||||||
| Radial velocity | (−15.5 ± 0.2) km / s | ||||||||
| parallax | (109.94 ± 2.07) mas | ||||||||
| distance | (29.7 ± 0.6) ly (9.10 ± 0.17) pc |
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| Visual absolute brightness M vis | approx. +10.6 mag | ||||||||
| Proper movement | |||||||||
| Rec. Share: | (+1130.27 ± 2.56) mas / a | ||||||||
| Dec. portion: | (−19.27 ± 1.33) mas / a | ||||||||
| Physical Properties | |||||||||
| Dimensions | 0.36 M ☉ | ||||||||
| radius | (0.52 ± 0.07) R ☉ | ||||||||
| Luminosity |
0.0045 L ☉ |
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Other names and catalog entries |
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Gliese 849 is a solar system with at least one exoplanet that was discovered in October 2006. The star is around 30 light years from Earth.
The star
Gliese 849 was discovered during the Bonn survey and was given the designation BD -5 ° 5715. The star is a red dwarf , has about a third of the mass of the sun and is about three billion years old. Compared to our sun , the star probably has significantly more heavy elements.
The planet
The planet around Gliese 849, systematically referred to as Gliese 849 b , has at least 82 percent of Jupiter's mass and orbits its star at an average distance of 2.35 astronomical units . Because the planet is so far from a fairly cold star, it is very cold there and the likelihood that life has evolved there is very small.
Web links
Detailed illustration of star and planet