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Details for Revision 5
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Name
  AY Lac  
AAVSO UID
000-BCQ-344 (7497 observations)  
Constellation
Lacerta Sequence
J2000.0
22 22 22.17 +50 23 40.0  (335.59238 +50.39444) Search nearby
B1950.0 22 20 21.98 +50 08 29.1
Galactic coord. 100.103 -5.751
Other names

(Internal only)
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AAVSO 2218+49 AN 207.1928 Downes AY Lac
Gaia20fab PSO J222222.169+502340.138  
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Variability type
UGWZ:
Spectral type --
Mag. range
13.7 - 22.4 g
Discoverer Cuno Friedrich Ludwig Hoffmeister
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Schmeer, Patrick Outbursts were recorded on archival photographic plates from late August to early September 1927 and from 11 to 29 August 1962 (2003IBVS.5441....1K). Another outburst began on 8 October 2020 (vsnet-alert 24778).
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References
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1 Gaia Alerts, 2020 (online data) --
2 T. Vanmunster, 2020, vsnet-alert #24819 --
3 P. Wiggins; P. Schmeer, 2020, vsnet-alert #24778 --
4 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0		 2017PASP..129j4502K
5 R.A. Downes et al., 2001, PASP 113, 764 (2006 archival version) 2005JAD....11....2D
6 P. Kroll, N. Samus, I. Volkov, 2003, IBVS 5441 2003IBVS.5441....1K
7 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
8 H.Gessner, VSS 7, H.2, 65, 1966. 1966VeSon...7...61G
9 C.Hoffmeister, Sonn Mitt N15, 1928. 1928MiSon..15....1H
10 Hoffmeister, C., 1928, 80 neue Veränderliche 1928AN....233...33H
External Links
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Supporting Documents
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Campaigns/Programs
 BAA VSS Recurrent Objects Programme
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
7 Otero, Sebastian Alberto 2020-11-01 08:13 UTC Gaia Alerts position.
6 Otero, Sebastian Alberto 2020-10-19 22:55 UTC Type from vsnet-alert 24819.
5 Schmeer, Patrick 2020-10-08 13:51 UTC Position and minimum magnitude from Pan-STARRS1. Type from g-r colours. Maximum magnitude from ASAS-SN Sky Patrol data. Discoverer added from 1928AN....233...33H. "Eruption" year deleted.
4 Otero, Sebastian Alberto 2011-10-25 22:37 UTC Type from IBVS 5441.
3 Admin, VSX 2010-01-23 04:06 UTC Update from [2003IBVS.5441....1K].
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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