Robert (Butch) Day
Galactic Ambassador
Joined: 19 Sep 2014
Posts: 1437
Location: Arlington, WA USA
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 Posted: Thu Aug 23, 2018 2:14 am Post subject: 30 Arietis — A 4 Star System With Planets |
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30 Arietis (abbreviated 30 Ari) is a 6th-apparent-magnitude quadruple star in the constellation of Aries. 30 Arietis is the Flamsteed designation. 30 Arietis A and B are separated by 38.1" or about 1500 AU at a distance of 130 light years away. The main components of both systems are F-type main-sequence stars, meaning they are fusing hydrogen in their cores. 30 Arietis A is itself a spectroscopic binary with an orbital period of 1.1 days. The 30 Arietis system is 910 million years old, one fifth the age of the Sun.
On November 27, 2009, the discovery of a very massive planet was announced to be orbiting 30 Arietis B at a distance of about 1 AU. The planet's mass is listed as greater than or eqal to 9.88 (plus or minus 0.94) greater than Jupiter's mass. The system diagram:
It reminds me of the Cyrannus star system, home of Kobol and the 12 colonies from BattleSrae GALACTICA (ABC 1978 - 1979).
NASA just released this gorgeous painting of the planet and star:
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