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| {{short description|Red dwarf}} | {{short description|Red dwarf}} | ||
| {{Infobox planet | {{Infobox planet | ||
Revision as of 19:39, 29 April 2021
 | It has been suggested that this article be merged into 30 Arietis#30 Arietis Bb. (Discuss) Proposed since December 2020. |
| Discovery | |
|---|---|
| Discovered by | Guenther et al. |
| Discovery site | Karl Schwarzschild Observatory |
| Discovery date | November 27, 2009 |
| Detection method | Radial velocity |
| Orbital characteristics | |
| Semi-major axis | 0.995 ± 0.012 AU (148,800,000 ± 1,800,000 km) |
| Eccentricity | 0.289 ± 0.092 |
| Orbital period (sidereal) | 335.1 ± 2.5 d 0.917 ± 0.007 y |
| Inclination | 4.14+0.96−0.90° |
30 Arietis Bb (sometimes abbreviated 30 Ari Bb) is a red dwarf which orbits the F-type main sequence star 30 Arietis Ba, located in a quintuple star system approximately 146 light years away in the constellation Aries. The red dwarf was discovered by on Friday, November 27, 2009 by using precise radial velocity method from echelle spectrograph installed in the Alfred-Jensch telescope in Karl Schwarzschild Observatory. The star had a minimum mass of nearly 10 times that of Jupiter. In 2020, after the inclination of the planetary orbit was measured to be just 4.14
−0.90°, the "planet" was found to fall in the mass range of the red dwarf star.
References
- ^ Kiefer, Flavien; Hébrard, Guillaume; Lecavelier, Alain; Martioli, Eder; Dalal, Shweta; Vidal-Madjar, Alfred (2021), "Determining the true mass of radial-velocity exoplanets with Gaia 9 planet candidates in the brown-dwarf/stellar regime and 27 confirmed planets", Astronomy & Astrophysics, A7: 645, arXiv:2009.14164, doi:10.1051/0004-6361/202039168, S2CID 221995447
- Guenther, E. W.; et al. (2009). "A substellar component orbiting the F-star 30 Arietis B". Astronomy and Astrophysics. 507 (3): 1659–1665. arXiv:0912.4619. Bibcode:2009A&A...507.1659G. doi:10.1051/0004-6361/200912112.
- Jean Schneider (2011). "Notes for Planet 30 Ari B b". Extrasolar Planets Encyclopaedia. Retrieved 3 October 2011.
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