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  V0509 Cas  
000-BCR-088 (3318 observations)  
Cassiopeia Sequence
23 00 05.10 +56 56 43.4  (345.02125 +56.94539) Search nearby
B1950.0 22 57 58.25 +56 40 36.5
Proper motion
RA: -2.24 +/- 0.26 mas/yDec: -2.60 +/- 0.24 mas/ySource: F. Van Leeuwen, 2007
Galactic coord. 108.159 -2.698
Other names

(Internal only)
AAVSO 2255+56 BD+56 2923 HD 217476
HIP 113561 HR 8752 IRC +60379
RAFGL 3006 SAO 35039  
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Variability type
Spectral type F8e-KIa-0+B1V
Mag. range
4.75 - 5.5 V
Discoverer --
Outburst --
Period 203.3 d
Rise/eclipse dur. --
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1 GCVS Team Pulsation of photosphere with P = 3 years. Tenuous shell ejected in 1975 is now falling back to the star.
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1 Samus, N. N.; Kazarovets, E. V.; Durlevich, O. V.; et al., 2017, General
Catalogue of Variable Stars: Version GCVS 5.1 (November 2019)
2 D.L.Lambert, K.H.Hinkle, D.N.B. Hall, ApJ 248, 638, 1981. 1981ApJ...248..638L
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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 = 2.90H = 2.63K = 2.30J - K = 0.60
AllWISE W3 = 2.42W4 = 2.02W3 - W4 = 0.40
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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Revision History
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3 Otero, Sebastian Alberto 2020-05-24 13:58 UTC Period from the GCVS (November 2019 version).
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.