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Name
  R Sgr  
AAVSO UID
000-BCG-040 (14082 observations)  
Constellation
Sagittarius Sequence
J2000.0
19 16 41.80 -19 18 27.7  (289.17417 -19.30769) Search nearby
B1950.0 19 13 45.83 -19 23 50.3
Proper motion
RA: 8.87 +/- 1.59 mas/yDec: -11.38 +/- 0.97 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 18.184 -14.073
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 1910-19 ASAS J191642-1918.5 BD-19 5367
GSC 06304-02023 HD 180275 HIP 94738
IRAS 19137-1923 IRC -20549 RAFGL 2353
SAO 162394 TYC 6304-2023-1  
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Variability type
M
Spectral type M4e-M6e
Mag. range
6.7 - 13.0 V
Discoverer Norman Pogson (1858)
Epoch
07 Jul 2005 (HJD 2453559.0) Ephemeris
Outburst --
Period 268.5 d
Rise/eclipse dur. 46%  (124 d)
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 GCVS Team P var. Max = 2405776 + 271.0d*E (JD2399500 - 2407500); Max = 2407115 + 264.2d*E (JD2407100 - 9500); Max = 2418125 + 269.65d*E (JD2409500 - 19500); Max = 2433137 + 267.90d*E (JD2419500 - 36000); since JD2436000 - see Table.
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
2 Cannon, A. J., 1907, Second catalogue of variable stars 1907AnHar..55....1C
3 T. Karlsson, Maxima of Mira stars --
4 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
External Links
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Location    Go   
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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 = 3.25H = 2.36K = 1.92J - K = 1.32
AllWISE W3 = 0.87W4 = 0.39W3 - W4 = 0.48
APASS-DR9 B = 12.61V = 11.08g' = 11.14B - V = 1.53
GALEX-DR5 NUV = 21.42
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 19 16 41.80 -19 18 27.7 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Campaigns/Programs
 LPV Program
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 Otero, Sebastian Alberto 2024-01-18 18:56 UTC Period from AAVSO data.
4 Fernig, Leo 2022-04-22 13:35 UTC Discoverer updated from 1907AnHar..55....1C page 24
3 Otero, Sebastian Alberto 2011-04-25 22:06 UTC Primary record creation. Period, epoch and range from ASAS-3 data.
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.