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Latest Details
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Name
  2MASS J18050205-2257187  
AAVSO UID
000-BFT-854 (No observations)  
Constellation
Sagittarius Sequence
J2000.0
18 05 02.05 -22 57 18.8  (271.25855 -22.95523) Search nearby
B1950.0 18 02 00.04 -22 57 33.8
Proper motion
RA: -4.8 +/- 7.6 mas/yDec: -9.0 +/- 3.7 mas/ySource: UCAC4
Galactic coord. 7.364 -0.747
Other names

(Internal only)
ASAS J180502-2257.3 ASASSN-V J180502.09-225718.9 OGLE-BLG-LPV-257709
OGLE-IV BLG761.01.19 UCAC2 22756183 USNO-B1.0 0670-0689611
VSX J180502.0-225719    
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Variability type
M
Spectral type --
Mag. range
10.678 (1.551) Ic
Discoverer Paul F. Lowell
Epoch
--
Outburst --
Period 287.4 d
Rise/eclipse dur. --
Remarks
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1 Lowell, Paul F. I noticed this object over a series of images taken of M20. It appears to brighten dramatically in IR throughout 2007.
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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 G. Pojmanski, 2000, AcA 50, 177 2000AcA....50..177P
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 = 7.00H = 5.81K = 5.13J - K = 1.87
AllWISE W1 = 4.12W2 = 3.60W3 = 3.03W4 = 2.43W1 - W2 = 0.52W3 - W4 = 0.60
Images
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Supporting Documents
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1 3 zipped images Lowell, Paul F. 2008-09-09 06:41 UTC Overview.jpg=finder chart showing M20
Animate.gif=animated gif showing outburst over time
Detail.jpg=shows object location in detail
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Revision History
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3 Otero, Sebastian Alberto 2023-02-27 20:47 UTC Type, period, mean magnitude and amplitude from 2022ApJS..260...46I. Gaia DR3 position.
2 Admin, VSX 2011-12-27 06:14 UTC Update from [2000AcA....50..177P].
1 Lowell, Paul F. 2008-09-09 11:19 UTC Initial submission.

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