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Name
  NSV 18857  
AAVSO UID
--  
Constellation
Centaurus Sequence
J2000.0
11 43 18.49 -63 16 57.9  (175.82704 -63.28275) Search nearby
B1950.0 11 40 55.11 -63 00 18.6
Proper motion
RA: -7.0 +/- 2.3 mas/yDec: -1.2 +/- 2.3 mas/ySource: UCAC4
Galactic coord. 295.362 -1.417
Other names

(Internal only)
2MASS J11431850-6316579 ASASSN-V J114318.60-631657.0 GDS_J1143185-631658
GSC2.3 S491001414 USNO-B1.0 0267-0271934 VIVACE 1362244
WISE J114318.46-631658.1    
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Variability type
EA
Spectral type A
Mag. range
13.97 - 14.33 r
Discoverer J. A. R. Caldwell, M. J. Keane, P. L. Schechter
Epoch
11 Apr 2023 (HJD 2460046.49) Ephemeris
Outburst --
Period 6.3637 d
Rise/eclipse dur. 12%  (18 h)
Remarks
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1 Nasonov, Dmitry Eccentric system. Min II = 14.19 r at phase 0.575, duration 12%.
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References
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1 Creevey, O. L.; et al., 2023, Gaia Data Release 3: Astrophysical parameters
inference system (Apsis) I -- methods and content overview
2023A&A...674A..26C
2 Gaia collaboration; et al., 2022, Gaia Data Release 3 (Gaia DR3) Part 1
Main source
2022yCat.1355....0G
3 Tonry, J. L.; et al., 2018, ATLAS: A High-cadence All-sky Survey System 2018PASP..130f4505T
4 Hackstein, M.; et al., 2015, The Bochum Survey of the Southern Galactic
Disk: II. Follow-up measurements and multi-filter photometry for 1323
square degrees monitored in 2010 - 2015
2015AN....336..590H
5 J.A.R.Caldwell, M.J.Keane, P.L.Schechter, AJ 101, No.5, 1763, 1991. 1991AJ....101.1763C
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 = 11.90H = 11.59K = 11.37J - K = 0.53
AllWISE W1 = 11.22W2 = 11.29W3 = 9.82W4 = 6.92W1 - W2 = -0.07W3 - W4 = 2.90
Images
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Supporting Documents
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1 NSV 18857 phase plot Nasonov, Dmitry 2024-06-03 19:05 UTC Light curve from GDS, ATLAS and Gaia DR3 photometry data folded with the best orbital period
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Stellar Association Membership
 IC 2944 Open Cluster 2012A&A...548A..97Z
Revision History
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2 Nasonov, Dmitry 2024-05-29 11:33 UTC Type, range, period, epoch and eclipse duration from Gaia DR3, GDS and ATLAS data. Spectral type from 2023A&A...674A..26C. Gaia DR3 position.
1 Admin, VSX 2005-12-18 01:33 UTC Preserved original object data.