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Latest Details
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Name
  V1977 Cyg  
AAVSO UID
000-BDP-722 (1365 observations)  
Constellation
Cygnus Sequence
J2000.0
20 47 37.47 +43 47 25.0  (311.90612 +43.79028) Search nearby
B1950.0 20 45 51.43 +43 36 18.5
Proper motion
RA: -1.417 +/- 1.245 mas/yDec: -0.940 +/- 0.719 mas/ySource: Gaia DR1
Galactic coord. 83.802 +0.207
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
2MASS J20473745+4347249 AS 442 EM* AS 442
GSC 03178-00282 HBC 697 JP11 5258
MHA 235-36 NSV 13308 SVS 2880
TYC 3178-282-1 UHA 25  
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Variability type
UXOR
Spectral type B8.5Ve
Mag. range
10.8 - 11.8 V
Discoverer --
Epoch
--
Outburst --
Period --
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto J-K= 2.03; B-V= 0.76.
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References
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1 Herbst, W.; Shevchenko, V. S., 1999, A Photometric Catalog of Herbig AE/BE
Stars and Discussion of the Nature and Cause of the Variations of UX
Orionis Stars
1999AJ....118.1043H
2 Terranegra, L.; et al., 1994, Uvbybeta photometry of Orion population stars
and related objects associated with six star forming regions
1994A&AS..104..557T
3 S.Ju.Melnikov, Perem Zvyozdy 23, No.3, in press. 1993PZ.....23..117M
4 G.H.Herbig, ApJ 128, No.2, 259, 1958. 1958ApJ...128..259H
External Links
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 8.65H = 7.70K = 6.62J - K = 2.03
AllWISE W1 = 5.33W2 = 4.32W3 = 2.97W4 = 1.36W1 - W2 = 1.01W3 - W4 = 1.62
APASS-DR9 B = 11.75V = 11.01g' = 11.38r' = 10.79i' = 10.52B - V = 0.74
SDSS-DR12 u = 13.95g = 13.76r = 10.88i = 10.61z = 11.75u - g = 0.19r - i = 0.27
Images
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Supporting Documents
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Campaigns/Programs
 YSO Program
Revision History
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3 Otero, Sebastian Alberto 2014-07-16 00:29 UTC Spectral type from 1994A&AS..104..557T. Type and range from 1999AJ....118.1043H. UCAC4 position.
2 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.