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Name
  V2038 Sgr  
AAVSO UID
000-BFG-417 (1 observation)  
Constellation
Sagittarius Sequence
J2000.0
18 45 20.35 -26 27 47.3  (281.33478 -26.46313) Search nearby
B1950.0 18 42 13.92 -26 30 56.4
Proper motion
RA: 2.9 +/- 5.6 mas/yDec: -23.3 +/- 5.7 mas/ySource: UCAC4
Galactic coord. 8.452 -10.486
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J18452035-2627474 ASASSN-V J184520.38-262746.8 Downes V2038 Sgr
IRAS 18422-2631 NSVS 19540168 OGLE-BLG-LPV-265913
OGLE-IV BLG399.13.27    
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Variability type
M
Spectral type M4e
Mag. range
11.166 (3.113) Ic
Discoverer --
Epoch
02 Jun 1928 (HJD 2425400.0) Ephemeris
Outburst --
Period 309.6 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto J-K= 1.48. NSVS data show slow variability from 11.1 to 11.5 ROTSE-I mag. Not a mira variable as stated in 1996A&AS..117..449Z who give V= 16.33; B-V= 1.53.
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References
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1 Iwanek, P.; et al., 2022, The OGLE Collection of Variable Stars: Nearly
66,000 Mira Stars in the Milky Way
2022ApJS..260...46I
2 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
3 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
4 Zwitter and Munari, 1996, CCD spectrophotometry of CVs. III. 3270-9000A
atlas for 38 faint systems.
1996A&AS..117..449Z
5 D.Hoffleit, AJ 66, 188, 1961. 1961AJ.....66..188H
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 = 8.37H = 7.49K = 6.89J - K = 1.48
AllWISE W1 = 6.70W2 = 6.09W3 = 5.40W4 = 4.55W1 - W2 = 0.61W3 - W4 = 0.85
APASS-DR9 g' = 14.84r' = 13.06i' = 10.91
Images
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Supporting Documents
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Revision History
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4 Otero, Sebastian Alberto 2023-02-21 20:59 UTC Type, period, mean magnitude and amplitude from 2022ApJS..260...46I. Gaia DR3 position.
3 Otero, Sebastian Alberto 2012-04-04 00:04 UTC Primary record creation. Spectral type from 1996A&AS..117..449Z. Type from NSVS data. 2MASS position.
2 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.