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Details for Revision 2
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Name
  BI Cyg  
AAVSO UID
000-BCL-401 (6152 observations)  
Constellation
Cygnus Sequence
J2000.0
20 21 21.88 +36 55 55.8  (305.34117 +36.93217) Search nearby
B1950.0 20 19 29.13 +36 46 19.4
Galactic coord. 75.320 +0.112
Other names

(Internal only)
2MASS J20212192+3655555 AAVSO 2017+36B AN 23.1919
ASASSN-V J202121.89+365556.7 BD+36 4025 GSC 02684-00522
IOMC 2684000059 IRAS 20194+3646 IRC +40408
RAFGL 2559 TIC 13249363 TYC 2684-522-1
WDS J20214+3656A    
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Variability type
LC
Spectral type M4Iab
Mag. range
8.4 - 9.9 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 2020JAVSO..48...50P Other period 319 d.
2 GCVS Team VB A (B 9.4m, 126", 110deg).
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References
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1 Percy, J. R., 2020, Period Analysis of All-Sky Automated Survey for
Supernovae (ASAS-SN) Data on a Sample of “Irregular” Pulsating Red Giants
2020JAVSO..48...50P
2 Kochanek, C. S.; et al., 2017, The All-Sky Automated Survey for Supernovae
(ASAS-SN) Light Curve Server v1.0
2017PASP..129j4502K
3 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
4 J.G.Hagen, J.Stein, ASV VIII. 1989eerz.book.....H
5 M.Beyer, Erg AN 12, N2, 1950. --
6 Hartwig, E.; Muller, G., 1921, Benennung von neu entdeckten veraenderlichen
Sternen
1921AN....212..353.
External Links
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Supporting Documents
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Campaigns/Programs
 SNEWS Campaign
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
5 Fernig, Leo 2023-03-29 20:25 UTC Discoverer updated from 1921AN....212..353. page 372.
4 Rodriguez, David R.V. 2023-03-22 20:24 UTC Type and period from 2020JAVSO..48...50P.
3 Otero, Sebastian Alberto 2021-02-26 00:46 UTC Range from ASAS-SN data. Gaia EDR3 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.