NNo GCVS J2000.0 Type Max Min I Min II Epoch Year Period M-m/D Spectrum References Other desig. p.m.(as/yr) Epoch Ident. New type GCVS
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729012 |mu. Sgr *|181345.81 -210331.8 |EA+ACYG | 3.80 | 3.88 | |V |44035. | | 180.55 |11 |B8eqIa+B1.5V |09921 BD | |+0.002 -0.001|2000.0 | |Hip | |mu. Sgr |
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_______________Cross-identifications:_______________
mu. Sgr = ADS 11169 |A
mu. Sgr = AN 1938.0017 |
mu. Sgr = BAY Sgr mu. |
mu. Sgr = BD -21 4908 |
mu. Sgr = BS 06812 |
mu. Sgr = CPD -21 06771 |
mu. Sgr = FLM Sgr 013 |
mu. Sgr = GSC 6276.03093 |
mu. Sgr = HD 166937 |
mu. Sgr = Hip 089341 |
mu. Sgr = MWC 0598 |
mu. Sgr = SAO 186497 |
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Reference to a chart or photograph:
BD Bonner Durchmusterung, F.W.A. Argelander, Bonner Sternverzeichniss, 1 bis 4 Sektion, Astronomische Beobachtungen auf der Sternwarte de Kgl. Rhein/ Friedrich-Wilhelms-Unviersiaet zu Bonn (CDS Cat. I/122).
Reference to a study of the star:
09921. R.S. Polidan, M.J.Plavec, AJ 89, N11, 1721, 1984 {1984AJ.....89.1721P}
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Remark:
VB A (B 10.48m, 16.9", 285deg; C 13.0m, 25.2", 119deg;
D 9.69m, 48.5", 312deg; E 9.25m, 50.0", 115deg). SB2
(e = 0.4). The variability type is EA/GS + ACYG.
According to [09922] there are also quasiperiodical light
variations with the amplitudes 0.08m - 0.15m and cycles
from 16d to 40d.
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