Iota Horologii
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Star ι Horologii |
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| AladinLite | |||||||||||||||||
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Observation dates equinox : J2000.0 , epoch : J2000.0 |
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| Constellation | Pendulum clock | ||||||||||||||||
| Right ascension | 02 h 42 m 33.5 s | ||||||||||||||||
| declination | -50 ° 48 ′ 1 ″ | ||||||||||||||||
| Apparent brightness | 5.4 likes | ||||||||||||||||
| Typing | |||||||||||||||||
| Known exoplanets | 1 | ||||||||||||||||
| B − V color index | +0.56 | ||||||||||||||||
| U − B color index | +0.10 | ||||||||||||||||
| Spectral class | F8 V | ||||||||||||||||
| Astrometry | |||||||||||||||||
| Radial velocity | (+16.80 ± 0.58) km / s | ||||||||||||||||
| parallax | (58.25 ± 0.22) mas | ||||||||||||||||
| distance | (56.0 ± 0.2) ly (17.2 ± 0.1) pc |
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| Proper movement | |||||||||||||||||
| Rec. Share: | (+333.810 ± 0.024) mas / a | ||||||||||||||||
| Dec. portion: | (+219.500 ± 0.022) mas / a | ||||||||||||||||
| Physical Properties | |||||||||||||||||
| Dimensions | 1.11 M ☉ | ||||||||||||||||
| radius | (1.85 ± 0.85) R ☉ | ||||||||||||||||
| Effective temperature | > 6000 K | ||||||||||||||||
| Metallicity [Fe / H] | +0.25 | ||||||||||||||||
| Age | approx. 4 billion a | ||||||||||||||||
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Other names and catalog entries |
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ι Horologii ( Iota Horologii , ι Hor), also HR810 is a yellow dwarf star 56 light years away . It has an apparent magnitude of 5.4 mag.
planet
In 1999 Martin Kürster discovered an exoplanet orbiting this star using the radial velocity method ( Iota Horologii b ). Due to its high mass , it is believed to be a gas giant .
properties
The planet orbits its central star about every 320 days at a distance of about 0.93 AU with an eccentricity of 0.161. It has a mass of about 2.26 Jupiter's masses.