HD 231701 b

HD 231701 b / Babylonia
Discovery
Discovered byFischer et al.
Discovery siteUnited States California, United States
Discovery dateApril 10, 2007
Radial velocity
Orbital characteristics
0.567±0.053 AU
Eccentricity0.13±0.032[1]
141.63±0.067[1] d
2463330.6±5.3[1]
68±14[1]
Semi-amplitude39.2±1.2[1]
StarHD 231701

HD 231701 b is an extrasolar planet approximately 356 light years away in the constellation of Sagitta. This planet orbits at 0.55 AU from the star HD 231701 with eccentricity 0.19. Based on its high mass of 1.08 MJ, the planet is probably a gas giant, meaning the planet has no solid surface and have composition similar to Solar System's outer planets.[2]

The planet HD 231701 b is named Babylonia. The name was selected in the NameExoWorlds campaign by Iraq, during the 100th anniversary of the IAU. Babylonia was a key kingdom in ancient Mesopotamia from the 18th to 6th centuries BC.[3][4]

References

  1. ^ a b c d e Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5. S2CID 119243619.
  2. ^ Fischer, Debra A.; et al. (2007). "Five Intermediate-Period Planets from the N2K Sample". The Astrophysical Journal. 669 (2): 1336–1344. arXiv:0704.1191. Bibcode:2007ApJ...669.1336F. doi:10.1086/521869. S2CID 7774321.
  3. ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  4. ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.


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