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Name
  NSV 9831  
AAVSO UID
--  
Constellation
Scorpius Sequence
J2000.0
17 54 49.49 -30 20 31.0  (268.70621 -30.34194) Search nearby
B1950.0 17 51 36.68 -30 20 01.5
Proper motion
RA: -0.8 +/- 5.2 mas/yDec: 2.3 +/- 2.7 mas/ySource: UCAC4
Galactic coord. 359.818 -2.438
Other names

(Internal only)
2MASS J17544949-3020309 ASAS J175450-3020.6 ASASSN-V J175449.63-302030.2
GSC 07378-00850 UCAC4 299-140299  
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Variability type
EA/GS
Spectral type --
Mag. range
12.75 - 13.27 V
Discoverer --
Epoch
25 Oct 2018 (HJD 2458416.50) Ephemeris
Outburst --
Period 157.52 d
Rise/eclipse dur. 1.7%  (3 d)
Remarks
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1 Otero, Sebastian Alberto Amplitude 0.52 mag. in V and 0.68 in g.
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References
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1 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0		 2017PASP..129j4502K
2 Pojmanski, G., 2002, The All Sky Automated Survey 2002AcA....52..397P
3 L.Plaut, Leid Ann 20, No.1, 1948. --
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 K = 9.29
AllWISE W1 = 9.10W2 = 9.24W3 = 9.20W1 - W2 = -0.14
Images
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Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2020-05-31 03:27 UTC Phase plot with ASAS-SN and ASAS-3 data.
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Revision History
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2 Otero, Sebastian Alberto 2020-05-31 03:27 UTC Type, period, epoch, eclipse duration and range from ASAS-3 and ASAS-SN data. Gaia DR2 position.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.

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