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Details for Revision 1
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Name
  tau Cyg  
AAVSO UID
000-BCN-618 (85 observations)  
Constellation
Cygnus Sequence
J2000.0
21 14 47.50 +38 02 43.0  (318.69792 +38.04528) Search nearby
B1950.0 21 12 48.33 +37 50 12.9
Galactic coord. 82.854 -7.432
Other names

(Internal only)
65 Cyg AAVSO 2110+37 ADS 14787
BD+37 4240 GJ 822.1 A HD 202444
HIP 104887 HR 8130 IRC +40475
RAFGL 5591S SAO 71121  
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Variability type
DSCT
Spectral type F0IV
Mag. range
3.65 - 3.75 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Combined range given. The DSCT varies from V= 3.82 to 3.84. There is a V= 6.43, G1V companion 0.8" away.
2 GCVS Team VB A (B 6.44m, G1V, A = 0.88", P = 49.80yr; C 12.20m, 29", 230deg). 0.083d <= P <= 0.125d. The range of total light variation is given.
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References
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1 Perryman, M. A. C., et al., 1997, The HIPPARCOS Catalogue 1997HIP...C......0E
2 M.M.Pant, V.P.Gaur, M.C.Pande, Obs 88, 221, 1968. 1968Obs....88..221P
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Supporting Documents
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Stellar Association Membership
 ASCC 113 Open Cluster 2012A&A...548A..97Z
Revision History
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3 Otero, Sebastian Alberto 2021-12-15 00:03 UTC Rage from Hipparcos and GCPD data.
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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