Yigor on 30-Mar-2010 01:04:19 GMT about HD 107914
potential Nemesis candidate arXiv:1003.5308v1 (http://arxiv.org/abs/1003.5308v1) :
plx = 12.77 [0.46], pmRA= 0.55 [0.4], pmDE= -0.02 [0.3] (HIP2, I/311) => transverse velocity = 0.2 km/s
It needs to have |radvel|>=16 to pass within 1 pc from the Sun and |radvel|>=52 to pass within 1 ly in linear approx.; there is a non-zero probability of direct collision with the inner solar system (of course, supposing that astrometric data are correct enough and if radvel had a great negative value).
Any estimations of its radial velocity ?
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