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Name
  ASAS J180057-2333.8  
AAVSO UID
000-BLX-051 (22 observations)  
Constellation
Sagittarius Sequence
J2000.0
18 00 57.07 -23 33 41.9  (270.23779 -23.56164) Search nearby
B1950.0 17 57 54.21 -23 33 39.2
Proper motion
RA: -2.033 +/- 2.071 mas/yDec: -3.256 +/- 1.888 mas/ySource: Gaia DR1
Galactic coord. 6.374 -0.230
Other names

(Internal only)
2MASS J18005707-2333420 ASAS 180057-2333.8 ASASSN-V J180056.95-233342.7
CD-23 13767 GDS_J1800577-233341 GSC 06842-01399
TYC 6842-1399-1 UCAC4 333-134536 [HHR2012] J180057.1-233342
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Variability type
EA/GS
Spectral type K1II+K4II
Mag. range
10.38 - 11.25 V
Discoverer --
Epoch
30 Mar 2003 (HJD 2452728.82) Ephemeris
Outburst --
Period 269.496 d
Rise/eclipse dur. 10%  (26.9 d)
Remarks
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1 Otero, Sebastian Alberto Min II= 10.92 V. ASAS-3 magnitudes contaminated by 2MASS J18005786-2333598 (V= 14.1; sep. 21") and UCAC4 333-134541 (V= 14.3; sep. 22"). Range has been corrected.
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References
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1 Suchomska, K.; et al., 2015, The Araucaria Project: accurate stellar
parameters and distance to evolved eclipsing binary ASAS J180057-2333.8 in
Sagittarius Arm
2015MNRAS.451..651S
2 M. Haas, M. Hackstein, M. Ramolla, H. Drass, R. Watermann, R. Lemke, R.
Chini, 2012, AN 333, 706
2012AN....333..706H
3 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
External Links
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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 = 7.05H = 6.24K = 5.92J - K = 1.13
AllWISE W1 = 5.24W2 = 5.24W3 = 5.27W4 = 2.55W1 - W2 = -0.00W3 - W4 = 2.71
APASS-DR9 B = 12.26V = 10.37g' = 11.29r' = 9.60i' = 8.80B - V = 1.89
Images
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Supporting Documents
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Stellar Association Membership
 Ruprecht 139 Open Cluster 2012A&A...548A..97Z
Revision History
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3 Zalezsak, Tamas 2016-03-24 01:07 UTC UCAC4 position.
2 Otero, Sebastian Alberto 2016-03-23 19:47 UTC Type, elements and spectral type from 2015MNRAS.451..651S. Range and eclipse durartion from ASAS-3 data. UCAC4 position.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.