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Name
  DY Peg  
AAVSO UID
000-BCR-239 (27066 observations)  
Constellation
Pegasus Sequence
J2000.0
23 08 51.19 +17 12 56.0  (347.21329 +17.21556) Search nearby
B1950.0 23 06 21.95 +16 56 40.9
Proper motion
RA: 47.325 +/- 0.154 mas/yDec: -22.074 +/- 0.106 mas/ySource: Gaia DR1
Galactic coord. 90.714 -39.154
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
AAVSO 2303+16 AN 112.1934 ASAS J230851+1712.9
BD+16 4877 HD 218549 HIP 114290
IOMC 1712000016    
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Variability type
SXPHE
Spectral type A3-F1
Mag. range
10.00 - 10.56 V
Discoverer --
Epoch
01 Sep 2008 (HJD 2454710.722) Ephemeris
Outburst --
Period 0.0729261 d  (105.0136 min)
Rise/eclipse dur. 35%  (36.75 min)
Remarks
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1 Otero, Sebastian Alberto Single mode pulsator. Possibly in a binary system with a brown dwarf companion.
2 GCVS Team P var. Max = 2432751.9624 + 0.072926372d*E (JD2429000 - 38000); since JD2438000 - see Table. The basic pulsation is superimposed by the secondary one with P1 = 0.05570d [T.Kozar, IBVS N1834, 1980.]. A var, M - m var (Pi = 0.2358d): 0.55m < A < 0.67m, 0.24P < M - m < 0.42P. Delta(S) = 6.
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References
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1 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
2012arXiv1210.0821A
2 A Period Investigation of the SX Phoenicis Star DY Pegasi 2010AJ....139.2639L
3 G.Pojmanski, Acta Astronomica 52, 397, 2002. 2002AcA....52..397P
4 Hamid A.Mahdy, B.Szeidl, Bud Mitt N74, 1980. 1980CoKon..74....1M
5 A.A.Batyrev, Perem. Zvezdy 9, N4, 300, 1953. --
6 Catalogue of Stellar Spectral Classifications (Skiff, 2005) 1947ApJ...106..135B
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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 = 9.74H = 9.59K = 9.56J - K = 0.19
AllWISE W1 = 9.54W2 = 9.55W3 = 9.50W4 = 8.79W1 - W2 = -0.00W3 - W4 = 0.71
APASS-DR9 B = 10.55V = 10.26g' = 10.50r' = 10.23i' = 10.43B - V = 0.29
GALEX-DR5 FUV = 15.63NUV = 13.43FUV - NUV = 2.20
SDSS-DR12 u = 11.96g = 10.72r = 10.42i = 10.40z = 11.36u - g = 1.24r - i = 0.02
Images
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Supporting Documents
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Revision History
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3 Otero, Sebastian Alberto 2011-09-11 02:06 UTC Type, period, epoch, rise duration and range from ASAS-3 data.
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.