WDS 16555-0820 UC 3253 CF : NOTES
 
 
discov_num notes refcode
KUI 75 Wolf 630.
A flare star, V1054 Oph. One of the shortest orbital period, for pairs
resolved first by naked eye. The radial velocities indicate a third
component. The intrinsically very faint star VB 8 (mag 17, 220") is
also a member of the system. There is strong evidence that it is an
astrometric binary. The pair is the large proper-motion star Wolf 630
which forms a multiple system with the SB Wolf 629 (mag.11.7, 72",
sdM4) and VBS 8 (mag. about 18, 221"), so the whole system is probably
a septuple. There is strong evidence that VBS 8 is an astrometric
binary. Eggen suggests that the group is part of a large moving Egg1965b
cluster. He has observed an UV flare on Wolf 630. According to
Soderhjelm, the mass ratio and mass sum require the secondary to be a Sod1999
closer SB. Unuseable HIP solution.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Combined solution from astrometry, spectroscopy, and parallax.
Solution yields mass and orbital parallax determination. Sgr2000
Martin et al. (1998) derive component masses 0.327 +/- 0.045 and
0.558 +/- 0.047 Msun. Mig1998
KUI 75AB is also known as Gliese 644 (B is an SB1 star), component C
is Gliese 643, also an SB1 star. Component F is VB 8 and is also known
as Gliese 644C. Och2010
Also known as GJ 644, this is a well-known and much studied triple
system (e.g. Segransan et al. 2000), of which we resolve the wider AB Sgr2000
pair (the secondary is a spectroscopic binary with a 3 day period). In
addition, there are two much wider components known to share a common
proper motion with GJ 644, making the system a likely quintuple. Since
there are so many existing astrometric points of the AB pair in the
literature, we do not give an extensive list in Table 4, but rather
refer the reader to Segransan et al., where there is a full orbital
analysis of the close triple system. Jnn2012
LDS 573 AC: While VB 8 itself is single in the AstraLux sensitivity range, it
is part of a higher-order multiple (at least triple, possibly
quintuple) as a known 1500 au companion (C component) to GJ 644, which Jnn2012
was discussed in our Janson et al. (2012) study. Jnn2014
WNO 55 AF: GJ 644 A+C. CPM pair. Mkr2008
SLE 687 AB,E: Rectilinear solution by Mason & Hartkopf (2016). Msn2016a
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Egg1965b - Eggen, O.J. 1965Obs....85..191E
Egg1965b Observatory 85, 191, 1965
Jnn2012 Cl j Janson, M., Hormuth, F., Bergfors, C., Brandner, W., Hippler, S., Daemgen, S., 2012ApJ...754...44J
Jnn2012 +E2 Kudryavtseva, N., Schmalzl, E., Schnupp, C., & Henning, T.
Jnn2012 ApJ 754, 44, 2012 (some recalibrated measures published in Jnn2014b) 2014ApJS..214...17J
Jnn2014 A - Janson, M., Bergfors, C., Brandner, W., Kudryavtseva, N., Hormuth, F., 2014ApJ...789..102J
Jnn2014 +Cl Hippler, S., & Henning, T.
Jnn2014 ApJ 789, 102, 2014
Mig1998 orb - Martin, Ch., Mignard, F., Hartkopf, W.I., & McAlister, H.A. 1998A&AS..133..149M
Mig1998 A&AS 133, 149, 1998
Mkr2008 E - Makarov, V.V., Zacharias, N., & Hennessy, G.S. 2008ApJ...687..566M
Mkr2008 +orb ApJ 687, 566, 2008
Mkr2008 (new pairs WNO 50 - WNO 57)
Msn2016a lin - Mason, B.D. & Hartkopf, W.I. 2016IAUDS.189....1M
Msn2016a Inf. Circ. 189, 1, 2016
Och2010 j Ochsenbein, Francois ...................
Och2010 private communication, 2010
Sgr2000 A j Segransan, D., Delfosse, X., Forveille, T., Beuzit, J.-L., Udry, S., Perrier, C., 2000A&A...364..665S
Sgr2000 +orb & Mayor, M.
Sgr2000 A&A 364, 665, 2000
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
 
 
DISCOVERER
 
 
idgroup discov author
1 KUI Kuiper, G.P., Schilt, van den Bos, W., and van Gent
63 LDS Luyten p.m. catalog (from additional DD list)
63 SLE Soulie, G.
82 UC USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4)
82 UC Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G.,
82 UC & Zacharias, M.I. (UCAC4 Catalog)
93 UC Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C.,
93 UC DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C.,
93 UC Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G.
95 WNO letters trailing each date on reference indicates different observers.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16555-0820 UC 3253 CF 2000 2 150 299.5 11.40 16.50 M V 165525.20-081921.6
16555-0820 UC 3253 CF 2010 3 150 298.9 11.40 16.50 M NV 165525.20-081921.6
16555-0820 UC 3253 CF 2015 4 150 298.8 11.40 16.50 M NV 165525.20-081921.6
16555-0820 UC 3253 CF 2016 6 150 298.8 11.40 16.50 M NV 165525.20-081921.6

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