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Latest Details
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Name
  TYC 3973-2396-1  
AAVSO UID
000-BJJ-297 (13424 observations)  
Constellation
Cepheus Sequence
J2000.0
22 09 40.86 +55 37 27.4  (332.42025 +55.62428) Search nearby
B1950.0 22 07 52.52 +55 22 41.0
Proper motion
RA: -5.246 +/- 3.031 mas/yDec: -2.139 +/- 3.041 mas/ySource: Gaia DR1
Galactic coord. 101.448 -0.350
Other names

(Internal only)
2MASS J22094085+5537274 ASASSN-V J220940.79+553726.9 GSC 03973-02396
NSVS 3431607 [BBB73] 80  
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Variability type
EA
Spectral type B8V
Mag. range
11.65 - 11.77 V
Discoverer --
Epoch
30 Aug 2014 (HJD 2456899.538) Ephemeris
Outburst --
Period 3.86721 d
Rise/eclipse dur. 7%  (6.5 h)
Remarks
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1 Otero, Sebastian Alberto Previously published period of 0.96138 d. based on NSVS data was spurious.
2 Otero, Sebastian Alberto It might be a BE star. V= 11.56; B-V= 0.27 in the GCPD. V= 11.66; B-V= 0.21 in Sonoita Observatory data. B-V ranging from 0.12 and 0.33 in APASS data. Spectral type from 1973A&A....27..421B.
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References
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1 Henden, A. A., et al., 2012, Data Release 3 of the AAVSO All-Sky
Photometric Survey (APASS)
2012JAVSO..40..430H
2 Wozniak, P.R., et al., 2004, Northern Sky Variability Survey: Public Data
Release
2004AJ....127.2436W
3 Barbier, M.; et al., 1973, Galactic structure in the direction of Cepheus 1973A&A....27..421B
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 = 11.03H = 11.00K = 10.96J - K = 0.07
AllWISE W1 = 10.93W2 = 10.97W3 = 10.50W4 = 8.89W1 - W2 = -0.04W3 - W4 = 1.60
APASS-DR9 B = 11.85V = 11.66g' = 11.71r' = 11.67i' = 11.77B - V = 0.19
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 22 09 40.86 +55 37 27.4 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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2 Phase plot - Eclipsing binary Otero, Sebastian Alberto 2014-10-09 21:26 UTC Phase plot with data from several AAVSO observers
1 Phase plot Otero, Sebastian Alberto 2014-09-03 09:16 UTC Phase plot with NSVS and APASS data.
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Revision History
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2 Otero, Sebastian Alberto 2014-10-09 21:26 UTC Type, period, epoch, eclipse duration and range from AAVSO and NSVS data.
1 Otero, Sebastian Alberto 2014-09-03 09:16 UTC Initial submission.