WDS 02291+6724 CTU 2 Ca,Cb : NOTES
 
 
discov_num notes refcode
STF 262 iot Cas. The primary is an unresolved binary, also an Alpha CVn
CHR 6 type variable, P = 1.74 d, and an astrometric, spectroscopic, and
spectrum variable (Rakos 1962; Klock, AJ 70, 176, 1965). The RV Rak1962
variation has not been confirmed.
Heintz (1962) also detected this pair as a submotion to the visual Hei1962
orbit of the AB pair with a period of 52 years and an amplitude of
0".11. Star C (mag. 8.4, dG4) is probably physical, but Hopmann Hop1960b
(1960) computed a hyperbolic orbit for it, as there is some RV
difference between C and A. q = periastron distance in the true
orbit = 6".7056. All hyperbolic orbits were rejected from the
Fourth and subsequent orbit catalogs. Wor1983
Soderhjelm gives Aa,Ab,B,C quadruple solution (AB in HIP). High Sod1999
mass-sum, strangely well-behaved speckle obs at Delta m=4?
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Drummond et al. (2003) give solution for Aa,Ab incorporating motion of Dru2003
the AB pair. The authors conclude that the motion of B relative to
the CHR pair appears to be rectilinear. Masses of the CHR components
are derived.
1985.8540: This autocorrelogram was remeasured; the new results are
listed in the catalog. McA1987b
STF 262 AB: H 1 34. AC: H 3 4. MEv2010
AC: Hyperbolic orbit. Hop1960b
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Dru2003 A j Drummond, J.D., Milster, S., Ryan, P., & Roberts, L.C. 2003ApJ...585.1007D
Dru2003 +orb ApJ 585, 1007, 2003
Hei1962 orb - Heintz, W.D. 1962VeMun...5..135H
Hei1962 Veroff. Sternw. Munchen 5, 135-160, 1962
Hop1960b orb - Hopmann, J. 1960MiWie..10..227H
Hop1960b Mitt. Sternw. Wien 10, 227-256, 1960
McA1987b Sc j McAlister, H.A., Hartkopf, W.I., Hutter, D.J., & Franz, O.G. 1987AJ.....93..688M
McA1987b AJ 93, 688, 1987
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Rak1962 - Rakos, K.,D. 1962LowOB...5..227R
Rak1962 Lowell Obs. Bull. 5, 227, 1962
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
Wor1983 - Worley, C.E. & Heintz, W.D. 1983PUSNO..24g...1W
Wor1983 Pub. USNO 24, Pt. 7, 1983 (Fourth Orbit Catalog)
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
3 CTU Christou, J.C., & Drummond, J.D.
6 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02291+6724 CTU 2 Ca,Cb 2005 3 273 0.4 8.40   K3 D 022903.94+672408.6
02291+6724 CTU 2 Ca,Cb 2018 5 101 0.2 4.50 6.10 K3 N K 022903.94+672408.6

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