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Name
  ASASSN-V J195442.95+172212.6  
AAVSO UID
000-BMS-818 (2495 observations)  
Constellation
Sagitta Sequence
J2000.0
19 54 42.96 +17 22 12.8  (298.67900 +17.37022) Search nearby
B1950.0 19 52 27.55 +17 14 16.1
Galactic coord. 55.644 -5.476
Other names

(Internal only)
2MASS J19544295+1722125 ASAS J195442+1722.2 AllWISE J195442.95+172212.7
CMC15 J195442.9+172212 GSC 01620-01205 HBHa 1704-05
IRAS Z19524+1714 NSVS 11279815 PPMX J195442.9+172212
TASS4 4147652 TCP J19544251+1722281 UCAC2 37963287
UCAC4 537-112537 Vend47 WISE J195442.95+172212.7
[KW97] 40-56    
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Variability type
SR+ZAND
Spectral type M3III:
Mag. range
10.7 - 13.2 V
Discoverer ASAS-SN
Epoch
--
Outburst --
Period 418 d
Rise/eclipse dur. --
Remarks
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1 Schmeer, Patrick Gaia DR2 parallax 0.2753 0.0578 mas (distance 3 kpc).
2 Schmeer, Patrick First noted by Kohoutek and Wehmeyer in their catalog of emission line stars (1999A&AS..134..255K) as a source with a strong continuum (thus not a PN) and overexposed Halpha emission (from ATel #11937).
3 Otero, Sebastian Alberto Sudden brightening on HJD 2458336 (August 5, 2018). It rose from V= 12.5 to 10.7 in only 4 days.
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References
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1 U. Munari; S. Dallaporta; P. Valisa; et al., 2018, ATel #11937 2018ATel11937....1M
2 Jayasinghe, T.; Kochanek, C. S.; Stanek, K. Z.; et al., 2018, The ASAS-SN
Catalog of Variable Stars I: The Serendipitous Survey
2018arXiv180301001J
3 Kohoutek, L.; Wehmeyer, R., 1999, Catalogue of H-alpha emission stars in
the Northern Milky Way
1999A&AS..134..255K
4 MacConnell, D. J., 1982, Discoveries on southern, red-sensitive
objective-prism plates. IV Extension to higher latitudes
1982A&AS...48..355M
5 CBAT "Transient Object Followup Reports", 2018 --
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Images
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Revision History
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4 Schmeer, Patrick 2019-03-22 10:02 UTC Gaia DR2 position.
3 Schmeer, Patrick 2018-08-11 11:53 UTC Type and spectral type from 1999A&AS..134..255K.
2 Otero, Sebastian Alberto 2018-08-10 02:13 UTC Type and range from ASAS-SN data and the CBAT "Transient Object Followup Reports" page. Gaia DR2 position. Spectral type from 1982A&AS...48..355M.
1 Admin, VSX 2018-01-29 19:30 UTC Preserved original object data.