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Details for Revision 3
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Name
  V2331 Sgr  
AAVSO UID
000-BFG-695 (51 observations)  
Constellation
Sagittarius Sequence
J2000.0
18 17 06.86 -23 57 51.4  (274.27858 -23.96428) Search nearby
B1950.0 18 14 03.49 -23 58 59.5
Galactic coord. 7.812 -3.661
Other names

(Internal only)
2MASS J18170686-2357514 ASAS J181706-2357.8 ASAS J181706-2358.0
OGLE bul_sc13_i_348899    
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Variability type
VAR
Spectral type --
Mag. range
10.6 - 14.6 I
Discoverer --
Epoch
18 Feb 1948 (HJD 2432600) Ephemeris
Outburst --
Period 240: d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto 3.7 mag. (Ic) fading event in OGLE data around JD 2451000. The identifier ASAS J181706-2358.0 given in 2012arXiv1211.2475T only has spurious data caused by light contamination from nearby stars. The true star identifier is ASAS J181706-2357.8 and shows the star only visible at V= 13.5 around JD 2452100 (and also affected by light contamination).
2 2012arXiv1211.2475T Not an RCB.
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References
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1 Samus, N. N.; Kazarovets, E. V.; Durlevich, O. V.; et al., 2017, General
Catalogue of Variable Stars: Version GCVS 5.1 (November 2019)		 2017ARep...61...80S
2 P. Tisserand, G.C. Clayton, D.L. Welch, B. Pilecki, L. Wyrzykowski, D.
Kilkenny, 2012, arXiv:1211.2475 [astro-ph.SR]		 2012arXiv1211.2475T
3 P. Tisserand, G.C. Clayton, D.L. Welch, B. Pilecki, L. Wyrzykowski, D.
Kilkenny, 2012, arXiv:1211.2475 [astro-ph.SR]		 2012arXiv1211.2475T
4 M. Nicholson, 2008, vsnet-alert 10848 --
5 Szymanski, 2005, Acta Astron. 55, 43 (online data) 2005AcA....55...43S
6 D.Hoffleit, IBVS N660, 1972. 1972IBVS..660....1H
7 D.Hoffleit, AJ 70, 307, 1965. 1965AJ.....70..307H
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Supporting Documents
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Revision History
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5 Otero, Sebastian Alberto 2020-05-24 18:42 UTC Type, period and epoch from the GCVS (November 2019 version).
4 Otero, Sebastian Alberto 2012-11-15 01:51 UTC Spectral type from 2012arXiv1211.2475T. Type and range from OGLE data. UCAC4 position.
3 Admin, VSX 2012-11-14 02:32 UTC Update from [2012arXiv1211.2475T].
2 Admin, VSX 2009-01-03 01:13 UTC Update from [M. Nicholson, 2008, vsnet-alert 10848].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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