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Details for Revision 2
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Name
  BR Sgr  
AAVSO UID
000-BFD-653 (No observations)  
Constellation
Sagittarius Sequence
J2000.0
18 20 12.40 -32 12 53.6  (275.05167 -32.21489) Search nearby
B1950.0 18 16 56.69 -32 14 14.7
Galactic coord. 0.780 -8.094
Other names

(Internal only)
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2MASS J18201241-3212529 ASAS J182012-3213.0 GSC 07397-02447
HD 319274 HV 3635 IRAS 18169-3214
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Variability type
M
Spectral type M4e
Mag. range
11.3 - 17.4 p
Discoverer --
Epoch
01 May 1957 (HJD 2435960) Ephemeris
Outburst --
Period 302.8 d
Rise/eclipse dur. 26%  (78.728000000000 d)
Remarks
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1 Otero, Sebastian Alberto VSP Note: 14.5 mag 4" binary 18" to the SSE, 16.3 mag. star 13" to the W and 16.3 mag. star 16" to the SW.
2 Otero, Sebastian Alberto ASAS-3 magnitudes contaminated by UCAC4 289-171280 (V= 16.3; sep. 13"), UCAC4 289-171282 (V= 16.3; sep. 16"), a 14.5 Vmag. 4" binary made up by UCAC4 289-171316 (V= 15.4; sep. 17.7") and UCAC4 289-171323 (V= 15.2; sep. 17.9") and UCAC4 289-171272 (V= 16.0; sep. 21"). Range has been corrected.
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References
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1 Gaia Collaboration; et al., 2018, Gaia Data Release 2. Summary of the
contents and survey properties
2018A&A...616A...1G
2 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
3 S.W. McCuskey, S. W., 1964, AJ 69, 104 1964AJ.....69..104M
4 J.Ponsen, Leid Ann 20, N17, 1957. --
5 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1928AnHar..79..161T
6 Guthnick, P.; et al., 1924, Benennung von neu entdeckten veränderlichen
Sternen
1924AN....223...41G
7 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
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Supporting Documents
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Stellar Association Membership
 Ferrero 1 Open Cluster 2012A&A...548A..97Z
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
6 Fernig, Leo 2023-07-05 21:37 UTC Discoverer updated from 1924AN....223...41G page 53.
5 Otero, Sebastian Alberto 2020-05-15 00:39 UTC Gaia DR2 position.
4 Admin, VSX 2014-05-04 00:02 UTC Spectral type from 1928AnHar..79..161T and 1964AJ.....69..104M.
3 Otero, Sebastian Alberto 2012-04-19 01:51 UTC Primary record creation. Period, epoch and range from ASAS-3 data. UCAC3 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.