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Name
  RY Sgr  
AAVSO UID
000-BCG-016 (51776 observations)  
Constellation
Sagittarius Sequence
J2000.0
19 16 32.77 -33 31 20.3  (289.13653 -33.52232) Search nearby
B1950.0 19 13 17.02 -33 36 42.2
Proper motion
RA: 9.029 +/- 0.072 mas/yDec: -0.292 +/- 0.042 mas/ySource: Gaia DR1
Galactic coord. 4.431 -19.448
Other names

(Internal only)
2MASS J19163275-3331204 AAVSO 1910-33 ASAS J191633-3331.3
CD-33 14076 CPD-33 5553 HD 180093
HIP 94730 HR 7296 RAFGL 5559
SAO 211117 WISE J191632.84-333118.9  
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Variability type
RCB
Spectral type G0Iaep(C1,0)
Mag. range
5.8 - 14.0 V
Discoverer E.E. Markwick (1893)
Epoch
23 Jul 2007 (HJD 2454305.00) Ephemeris
Outburst --
Period 37.67 d
Rise/eclipse dur. --
Remarks
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1 GCVS Team VB A (B 15.69m, 12"). There are pulsational light variations (0.1m < A < 1.5m) with the elements: Max = 2433670 + 38.6056d*E - 78d*10**(-5)*E**2. light curve [M.Verdenet, BAFOEV 17, N3, 106, 1981., M.W.Mayall, JRAS Can 66, 233, 1972.]; spectrum description [J.B.Alexander, P.J.Andrews, R.M. Catchpole, M.W.Feast, T.Lloyd Evans, J.W.Menzies, P.N.J.Wisse, M.Wisse, MN 158, 305-360, 1972.].
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References
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1 Tisserand, P.; Clayton, G. C.; Bessell, M. S.; et al., 2020, A plethora of
new R Coronae Borealis stars discovered from a dedicated spectroscopic
follow-up survey
2020A&A...635A..14T
2 The All Sky Automated Survey 2002AcA....52..397P
3 H.G.Marraco, G.E.Milesi, AJ 87, 1775, 1982. 1982AJ.....87.1775M
4 E.C. Pickering, 1896, Harvard College Observatory Circular 7, 1 1896HarCi...7....1P
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 = 5.58H = 5.42K = 5.14J - K = 0.44
APASS-DR9 B = 7.00V = 6.72B - V = 0.28
Images
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Supporting Documents
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Campaigns/Programs
 Binocular program
Revision History
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5 Otero, Sebastian Alberto 2020-06-10 02:48 UTC Reference to 2020A&A...635A..14T added. Gaia DR2 position.
4 Admin, VSX 2012-12-28 00:42 UTC Update from [1896HarCi...7....1P].
3 Otero, Sebastian Alberto 2012-11-23 21:45 UTC Period and epoch 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.