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Name
lam Sco
AAVSO UID
Constellation
J2000.0
B1950.0
17 30 12.70 -37 04 09.7
Proper motion
Galactic coord.
351.744 -2.214
Other names(Internal only)
35 Sco
1RXS J173336.7-370604
CD-37 11673
CPD-37 7265
HD 158926
HIP 85927
HR 6527
SAO 208954
X 17401-391
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Variability type
BCEP+EA
Spectral type
B1.5IV+PMS+B2IV
Mag. range
1.59 - 1.65 V
Discoverer
--
Epoch
Outburst
--
Period
0.213702 d (5.1288 h)
Rise/eclipse dur.
--
Remarks
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1
Otero, Sebastian Alberto
Close eclipsing binary made up of a B1.5IV primary (the A component) and a pre-main sequence star (PMS; Aa component).
Ephemeris using Hipparcos data:
HJD 2448165.687 + 5.9525 x E.
Also a constant B2IV star (component B) in a 1053 d. orbit with the close A pair. Combined light given.
(Aa is V= 2.1 and B is V= 2.75)
2
GCVS Team
SB1. Porb = 5.6d? Apuls = 0.02m. Long period light changes: Max = 2440376.15 + 10.1605d*E [N.R.Lomb, R.R.Shobbrook, MN 173, 709, 1975. ]. One eclipse was found (JD2440690, A ~0.04m) [R.R.Shobbrook, N.R.Lomb, MN 156, 181, 1972. ].
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References
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Location
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service . These data may not be complete.
2MASS
J = 2.01 H = 2.07 K = 2.11 J - K = -0.10
AllWISE
W3 = 2.57 W4 = 2.42 W3 - W4 = 0.14
Images
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Campaigns/Programs
BRITE campaign
Revision History
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