Forveille on 10-May-2010 09:36:00 GMT about HD 152751
Gl 644/Wolf 630 actually is part of a
quintuple system
, not just a triple one:
- the
brighter component
of the 1.7 yr visual binary mentioned in the current notes is a spectroscopic binary with P=2.96 days
-
vB8
is a common proper motion companion, in addition to
Gl 643
Segransan et al, 2000 Astronomy and Astrophysics, v.364, p.665-673
probably contains the best orbital elements for
the inner triple, but the system has been known as quintuple
for longer.
Also, Wolf 630 is the center/namesake of a putative stellar moving group. Whether that kinematic grouping is, or is not, the physical remnant of an open cluster remains undecided, as far as I know.
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