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Name
  del Cep  
AAVSO UID
000-BCQ-471 (55045 observations)  
Constellation
Cepheus Sequence
J2000.0
22 29 10.27 +58 24 54.7  (337.29279 +58.41519) Search nearby
B1950.0 22 27 18.59 +58 09 31.5
Proper motion
RA: 15.35 +/- 0.22 mas/yDec: 3.52 +/- 0.18 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 105.194 +0.531
Other names

(Internal only)
27 Cep del Cep A AAVSO 2225+57
ADS 15987 A BD+57 2548 HD 213306
HIP 110991 HR 8571 IRC +60356
PPM 40731 SAO 34508  
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Variability type
DCEP
Spectral type F5Ib-G1Ib
Mag. range
3.49 - 4.36 V
Discoverer John Goodricke (1784)
Epoch
24 Aug 1957 (HJD 2436075.445) Ephemeris
Outburst --
Period 5.366266 d
Rise/eclipse dur. 25%
Remarks
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1 Otero, Sebastian Alberto VSP Note: Naked eye range V= 3.42 - 4.19 (including the 6.3 mag. companion 41" away).
2 GCVS Team VB A (B 13.0m, 20.0", 285deg; C 6.10m - 6.37m, B7IV, 41.0", 191deg. P var. Max = 2393659.856 + 5.366438d*E (JD2372200 - 96900); Max = 2413960.73 + 5.366386d*E (JD2396900 - 2414050); since JD2414050 - see Table. All observations in the interval JD2373090 - 45000 are well represented also by the elements with a square term: Max = 2442756.490 + 5.366270d*E - 7d*6*10**(-9)*E**2 [L.Szabados, Bud Mitt N76, 1980.].
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References
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1 Perryman, M. A. C., et al., 1997, The HIPPARCOS Catalogue 1997HIP...C......0E
2 P.P.Parenago, Perem. Zvezdy 11, N4, 236, 1958. 1956PZ.....11..236P
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 = 2.87H = 2.61K = 2.35J - K = 0.51
AllWISE W3 = 2.28W4 = 2.13W3 - W4 = 0.15
Images
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Supporting Documents
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1 Phase plot Otero, Sebastian Alberto 2013-09-24 22:51 UTC Phase plot with historical data.
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Revision History
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4 Otero, Sebastian Alberto 2013-09-24 22:51 UTC Period from historical data.
3 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
2 van Ballegoij, Erwin J 2007-06-18 12:21 UTC --
1 Admin, VSX 2005-12-17 20:33 UTC Initial database population.