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Name
  RY Lup  
AAVSO UID
000-BBW-821 (12005 observations)  
Constellation
Lupus Sequence
J2000.0
15 59 28.39 -40 21 51.3  (239.86829 -40.36425) Search nearby
B1950.0 15 56 05.93 -40 13 20.7
Proper motion
RA: -11.198 +/- 0.217 mas/yDec: -22.308 +/- 0.139 mas/ySource: Gaia DR1
Galactic coord. 337.353 +9.618
Other names

(Internal only)
2MASS J15592838-4021513 AAVSO 1552-40 ASAS J155928-4021.9
GSC 07842-00532 HBC 252 HIP 78317
HV 3582 TYC 7842-532-1  
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Variability type
UXOR/ROT
Spectral type K4
Mag. range
10.2 - 13.3 V
Discoverer --
Epoch
--
Outburst --
Period 3.80 d
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto J-K= 1.57.
2 GCVS Team Quasiperiodicity: P = 3.7609d [C.Hoffmeister, IAU Trans 12B, 276, 1964.].
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References
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1 S.A. Artemenko, K.N. Grankin, P.P. Petrov, 2013, arXiv:1301.2493
[astro-ph.SR]
2013arXiv1301.2493A
2 Manset, N., et al, 2009, Photometric and polarimetric clues to the
circumstellar environment of RY Lupi
2009A&A...499..137M
3 The All Sky Automated Survey 2002AcA....52..397P
4 C.Hoffmeister, VSS 3, N3, 1958. --
5 F.M.Bateson, A.F.Jones, Charts for Southern Variables, ser.II, 1960. --
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 = 8.55H = 7.69K = 6.98J - K = 1.57
AllWISE W1 = 6.20W2 = 5.26W3 = 3.65W4 = 1.40W1 - W2 = 0.94W3 - W4 = 2.24
APASS-DR9 B = 11.68V = 10.73g' = 11.19r' = 10.44i' = 10.29B - V = 0.95
Images
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Supporting Documents
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Campaigns/Programs
 YSO Program
Revision History
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4 Admin, VSX 2013-01-14 23:18 UTC Update from [2013arXiv1301.2493A].
3 Otero, Sebastian Alberto 2012-09-20 19:05 UTC Type and spectral type from 2009A&A...499..137M. Range from 2009A&A...499..137M and ASAS-3 data.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.