Peter 163
Stern Gliese 163 |
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AladinLite | |||||||||||
Observation dates equinox : J2000.0 , epoch : J2000.0 |
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Constellation | Swordfish | ||||||||||
Right ascension | 04 h 09 m 15.67 s | ||||||||||
declination | -53 ° 22 ′ 25.3 ″ | ||||||||||
Apparent brightness | 11.8 mag | ||||||||||
Typing | |||||||||||
Known exoplanets | 5 | ||||||||||
B − V color index | (1.19) | ||||||||||
U − B color index | (1.09) | ||||||||||
R − I index | (1.40) | ||||||||||
Spectral class | M3.5 | ||||||||||
Astrometry | |||||||||||
parallax | (66.07 ± 0.03) mas | ||||||||||
distance | (49.34 ± 0.02) ly | ||||||||||
Visual absolute brightness M vis | +11 likes | ||||||||||
Proper movement | |||||||||||
Rec. Share: | (1046.14 ± 0.06) mas / a | ||||||||||
Dec. portion: | (584.13 ± 0.07) mas / a | ||||||||||
Physical Properties | |||||||||||
Dimensions | (0.40 ± 0.02) M ☉ | ||||||||||
Luminosity |
(0.02) L ☉ |
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Effective temperature | (3500 ± 100) K. | ||||||||||
Metallicity [Fe / H] | (0.10 ± 0.10) | ||||||||||
Other names and catalog entries |
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Gliese 163 is a red dwarf of the spectral class M3.5, which is located around 49 light years (15 pc ) from the sun in the constellation Swordfish and is probably circled by 5 planetary companions. The object has an apparent magnitude of 11.8 mag and an absolute magnitude of +11 mag.
Planetary companions
In September 2012, the discovery of at least two exoplanets around Gliese 163 with the help of the HARPS instrument was announced. The innermost planet, Gliese 163 b, has an orbital period of almost 9 days and about 10 times the mass of the earth. The next Gliese 163 c has a period of about 26 days and is located on the inner edge of the habitable zone . Its minimum mass is about 8 earth masses. In 2013 the discovery of Gliese 163 d was announced, which is located much further out with an orbital period of about 600 days. In 2019 the discovery of the planets Gliese 163 e and f was announced.
Planet (by distance from the star) |
Discovery (year) |
Minimum dimensions (in M ♁ ) |
Cycle time (in days) |
Major semi-axis (in AU ) |
eccentricity |
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b | 2012 | 10 | 8.63 | 0.06 | 0.02 |
c | 2012 | 8th | 25.64 | 0.12 | 0.03 |
f | 2019 | 7th | 109.5 | 0.33 | 0.04 |
e | 2019 | 14th | 349 | 0.7 | 0.03 |
d | 2013 | 20th | 604 | 1.02 | 0.02 |
Web links
- "A Hot Potential Habitable Exoplanet around Gliese 163"
- "Newfound Alien Planet a Top Contender to Host Life"