HD 231701
Coordinates: 
19h 32m 04.1611s, +16° 28′ 27.444″
19h 32m 04.1611s, +16° 28′ 27.444″| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagitta
|
| Right ascension | 19h 32m 04.1610s[1] |
| Declination | +16° 28′ 27.4411″[1] |
| Apparent magnitude (V) | 8.97[2] |
| Characteristics | |
| Evolutionary stage | main sequence |
| Spectral type | F8 V[2] |
| B−V color index | 0.539±0.015[2] |
| Absolute magnitude (MV) | 3.64[2] |
| Details | |
Gyr | |
| Database references | |
| SIMBAD | data |
HD 231701 is a yellow-white hued
light years from the Sun, but it is drifting closer with a radial velocity of −63 km/s.[1] It is predicted to come as close as 189.5 light-years in 1.345 million years.[2]
HD 231701 is named Uruk. The name was selected in the NameExoWorlds campaign by Iraq, during the 100th anniversary of the IAU. Uruk was an ancient city of the Sumer and Babylonian civilizations in Mesopotamia.[8][9]
This object is an ordinary
In 2007, the
radial velocity technique to discover a Jupiter-like planet orbiting at a distance of 0.57 AU from the star with a period of 141.6 days.[6]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Babylonia | ≥1.13±0.25 MJ | 0.567±0.053 | 141.63±0.067 | 0.13±0.032 | — | — |
See also
- List of extrasolar planets
References
- ^ .
- ^ S2CID 119257644.
- ^ S2CID 119511744, 21.
- ^ S2CID 56051637, A69.
- S2CID 55237847.
- ^ S2CID 7774321.
- ^ "HD 231701". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-18.
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- S2CID 119243619.
External links
- "HD 231701". Extrasolar Planets Encyclopaedia. Archived from the original on June 13, 2007.
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