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Latest Details
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Name
  RY Cep  
AAVSO UID
000-BCR-444 (4003 observations)  
Constellation
Cepheus Sequence
J2000.0
23 21 14.52 +78 57 31.8  (350.31050 +78.95883) Search nearby
B1950.0 23 19 38.76 +78 41 04.2
Proper motion
RA: 5.954 +/- 1.234 mas/yDec: 4.790 +/- 1.734 mas/ySource: Gaia DR1
Galactic coord. 118.531 +16.866
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2318+78 AN 4.1909 ASASSN-V J232114.21+785732.6
BD+78 830 NSVS J2321146+785732  
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Variability type
M
Spectral type Ke-M0e
Mag. range
8.6 V - 14.00 V
Discoverer L. Ceraski (11 February 1909)
Epoch
20 Oct 1980 (HJD 2444533.00) Ephemeris
Outburst --
Period 149.06 d
Rise/eclipse dur. 51%  (76 d)
Remarks
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References
Click reference title/citation to view in new window. Roll over index number to view submission details.
1 Samus, N. N.; Kazarovets, E. V.; Durlevich, O. V.; et al., 2017, General
Catalogue of Variable Stars: Version GCVS 5.1 (November 2019)
2017ARep...61...80S
2 P.R. Wozniak, S.J. Williams, W.T. Vestrand, V. Gupta, AJ 128, 2965, 2004 2004AJ....128.2965W
3 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1954ApJS....1..175B
4 A.Brun, Lyon Bull 5, 69, 1923. --
5 Ceraski, W., 1909, Une variable nouvelle 4.1909 Cephei 1909AN....180..215C
6 T. Karlsson, Maxima of Mira stars --
7 General Catalogue of Variable Stars, 4th Edition, Volumes I-III, P.N.
Kholopov et al.
--
External Links
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Location    Go   
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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 = 6.78H = 6.08K = 5.74J - K = 1.04
AllWISE W1 = 5.39W2 = 4.85W3 = 4.54W4 = 4.22W1 - W2 = 0.55W3 - W4 = 0.32
APASS-DR9 B = 13.31V = 10.98g' = 11.88r' = 10.24i' = 8.24B - V = 2.33
Images
Please review Digitized Sky Survey Acknowledgment and Copyright.
Size 5' x 5' (297 x 298 pixels)
Center 23 21 14.52 +78 57 31.8 (J2000)
Source STScI
Survey

Red, all sky, 1.0 arcsec/pixel
  Negative
Supporting Documents
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
4 Otero, Sebastian Alberto 2020-05-24 19:01 UTC Minimum magnitude from the GCVS (November 2019 version).
3 Billiaert, Bruno 2016-02-14 00:46 UTC Discoverer from 1909AN....180..215C.
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.