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Name
  HT Cas  
AAVSO UID
000-BBC-434 (101343 observations)  
Constellation
Cassiopeia Sequence
J2000.0
01 10 13.12 +60 04 35.5  (17.55467 +60.07653) Search nearby
B1950.0 01 07 05.11 +59 48 38.3
Proper motion
RA: 30.8 +/- 8.6 mas/yDec: -8.6 +/- 8.0 mas/ySource: UCAC4
Galactic coord. 125.275 -2.710
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1RXH J011013.5+600437 1RXS J011013.6+600431 1WGA J0110.2+6004
2MASS J01101312+6004354 2RXP J011013.6+600431 2RXS J011013.3+600433
2XMM J011012.9+600435 3XMM J011020.3+600442 4XMM J011013.1+600435
AAVSO 0103+59 AN 16.1943 ASASSN-V J011013.19+600434.9
Downes HT Cas Gaia21cvd IOMC 4030000075
IPHAS J011013.15+600435.5 SON 3343 XMMOM J011013.1+600436
XMMSL2 J011012.7+600436 ZTF17aaafieu ZTF17aabuuvu
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Variability type
UGSU+E
Spectral type M5.5Ve+WD
Mag. range
12.6 - 19.3 V
Discoverer --
Epoch
07 Aug 1978 (HJD 2443727.9373) Ephemeris
Outburst --
Period 0.07364720310 d  (106.05197246 min)
Rise/eclipse dur. --
Remarks
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1 GCVS Team Min hel = 2443727.93722 + 0.073647217d*E; D = 0.13P. Depth of eclipses between outbursts is ~2.4 V. Small quasi-periodic light oscillations with P = 100s. Spectrum description [P.Young, D.Schneider, S.A.Shectman, ApJ 245, 1035, 1981.].
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References
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1 Gaia Alerts, 2021 (online data) --
2 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)		 2012arXiv1210.0821A
3 W.J. Feline et al., 2005, MNRAS 364, 1158 2005MNRAS.364.1158F
4 R.A.Downes, 2001, PASP 113, 764 (2006 archival) 2005JAD....11....2D
5 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
6 Marsh, T. R., 1990, Detection of the Secondary Star in HT Cassiopeiae 1990ApJ...357..621M
7 J.Patterson, ApJ Suppl 45, 517, 1981. 1981ApJS...45..517P
8 MVS N275, 1957. --
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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 = 14.70H = 14.23K = 13.84J - K = 0.86
AllWISE W1 = 13.48W2 = 13.22W3 = 11.25W1 - W2 = 0.26
Images
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Supporting Documents
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Campaigns/Programs
 Legacy CVs
Revision History
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5 Otero, Sebastian Alberto 2021-06-14 00:16 UTC Spectral type from 1990ApJ...357..621M.
4 Schmeer, Patrick 2020-02-11 14:19 UTC Gaia DR2 position.
3 Admin, VSX 2010-01-05 04:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-03-26 03:09 UTC Update from [2005MNRAS.364.1158F].
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.

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