14 Herculis c
14 Herculis c is the second extrasolar planet after 14 Herculis b , which orbits the main sequence star 14 Herculis . Due to its high mass , it is assumed that it is a gas planet . Currently (2018) the planet is considered unconfirmed.
Info
During the measurements of the radial velocity of 14 Herculis, 14 Herculis b had already been found, the data indicated a second, more distant, massive celestial body, which was published by Krzysztof Goždziewski in 2006. In a later publication the same author states that for a long-term stable system, an orbital resonance between the two planets can be assumed. Assuming identical orbital planes, a possible position of 14 Herculis c can be seen at a distance of 6.9 AU with a period of about 6900 days (1: 4 resonance), Goździewski considers an orbit at 9 AU to be the most stable. The planet would have a mass at least twice that of Jupiter.
Web links
- The exoplanet in the "Encyclopedia of Extrasolar Planets"
Individual evidence
- ↑ Exoplanet.eu
- ↑ Goździewski, K., Konacki, M., Maciejewski, AJ: Orbital Configurations and Dynamical Stability of Multiplanet Systems around Sun-like Stars HD 202206, 14 Herculis, HD 37124, and HD 108874 . In: The Astrophysical Journal . 645, No. 1, 2006, pp. 688-703. bibcode : 2006ApJ ... 645..688G . doi : 10.1086 / 504030 .
- ↑ Wittenmyer, RA, Endl, M. Cochran, WD: Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis . In: The Astrophysical Journal . 654, No. 1, 2007, pp. 625-632. bibcode : 2007ApJ ... 654..625W . doi : 10.1086 / 509110 .
- ↑ Krzysztof Goździewski, Cezary Migaszewski, Maciej Konacki: A dynamical analysis of the 14 Herculis planetary system . In: Monthly Notices of the Royal Astronomical Society . 385, No. 2, 2008, pp. 957-966. doi : 10.1111 / j.1365-2966.2008.12920.x .