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2019-12-08 14:20:24
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ó ͳݱ ˻ ҽϴ. Based on proper motion and more recent radial velocity data from the HIPPARCOS space satellite mission, Gliese 710 is expected to come within 1.1 light-years (0.34 pc) of Sol in less than 1.4 million years, but previously, astronomers did not expect it to "perturb the Solar System's Oort Cloud sufficiently to create a substantial increase in the long-period comet flux at Earth's orbit" (García-Sánchez et al, 1999; and Weissman et al, 1997). According to new modelling calculations using additional data from ground-based telescopes which were published in March 3, 2010, Gliese 710 does have a 1 in 10,000 chance of coming within 1,000 AUs of Sol, which could significantly perturb the Oort Cloud, the Edgeworth-Kuiper Belt, and even slightly alter the orbit of Neptune (Vadim V. Bobylev, 2010; and Rachel Courtland, New Scientist, March 15, 2010). ó : http://www.solstation.com/stars2/gl710.htm