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Chara |
 | | On February 19, 2006, Turnbull named Chara as a nearby Sun-like star that is old enough to qualify as the top candidate for those listening for radio signals from intelligent civilizations (e.g., the SETI Institute). |
 | | Chara's age can be revised to 4.05 billion years based a new metallicity measurement indicating 64 percent of Sol's iron abundance and nearly the same ratio (98 percent) of calcium to iron abundance (Ibukiyama and Arimoto, 2002), from a previous estimate of 9.8 billion years (Ng and Betelli, 1998). |
 | | Chara B? According to the Yale Bright Star Catalogue, 1991 5th Revised Edition notes entry for HR 4785, a possible companion object was detected as a single-line spectroscopic binary with an estimated orbital period of 2,430 days. |
| www.solstation.com /stars/chara.htm (608 words) |
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