WDS 19474+1832 BLA 6 (Del Sge) : NOTES
 
 
discov_num notes refcode
BLA 6 del Sge = 7 Sge.
Mk III Limb-darkened diameter 9.151 +/- 0.119 mas. MkT2003
The composite spectrum offered unfilled hope of observable duplicity. WRH1941b
Disk unresolved in 1975.629 but possible binary. Bla1977a
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Malkov et al. (2012) derive dynamical and spectroscopic masses
7.84 +/- 3.26 and 8.70 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Bla1977a S j Blazit, A., Bonneau, D., Koechlin, L. & Labeyrie, A. 1977ApJ...214L..79B
Bla1977a ApJ 214, L79, 1977
Eat1995 orb - Eaton, J.E., Hartkopf, W.I., McAlister, H.A., & Mason, B.D. 1995AJ....109.1856E
Eat1995 AJ 109, 1856, 1995
MkT2003 Km - Mozurkewich, D., Armstrong, J.T., Hindsley, R., Quirrenbach, A., Hummel, C.A., 2003AJ....126.2502M
MkT2003 +not Hutter, D., Johnston, K.J., Hajian, A., Elias, N.M., II, Buscher, D., & Simon, R.
MkT2003 AJ 126, 2502, 2003
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
WRH1941b J - Wilson, R.H. 1941PFAO....6b...1W
WRH1941b +Ma Pub. Univ. Penn. 6, Pt.4, 21, 1941
WRH1941b (U and T coded observations per van den Bos, J Obs 34, 85, 1951) 1951JO.....34...85V
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19474+1832 BLA 6 1991 22 62 0.1 4.32 4.95 M2II+A0V NOD 194723.27+183203.3

If you need more information about this double, apply for a data request form to the WDS.