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Details for Revision 2
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Name
  EF Ser  
AAVSO UID
000-BFL-985 (No observations)  
Constellation
Serpens Sequence
J2000.0
18 21 02.13 -15 53 00.1  (275.25887 -15.88336) Search nearby
B1950.0 18 18 09.45 -15 54 25.7
Galactic coord. 15.378 -0.663
Other names

(Internal only)
ASASSN-V J182102.13-155300.1    
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Variability type
M
Spectral type --
Mag. range
12.3 - 15.3 I
Discoverer --
Epoch
12 Oct 1961 (HJD 2437585) Ephemeris
Outburst --
Period 350: d
Rise/eclipse dur. --
Remarks
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1 GCVS Team In the region of the open cluster M 17 = NGC 6618.
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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 B.V.Kukarkin, Manuscript, 1965. --
3 P.Maffei, Asiago Contr N146, 1963. --
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Supporting Documents
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Stellar Association Membership
 NGC 6618 Open Cluster 2012A&A...548A..97Z
Revision History
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3 Otero, Sebastian Alberto 2023-02-21 21:50 UTC Period from 2022ApJS..260...46I. Gaia DR3 position.
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.

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