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Name
  AT Cnc  
AAVSO UID
000-BBP-677 (57167 observations)  
Constellation
Cancer Sequence
J2000.0
08 28 36.93 +25 20 03.0  (127.15387 +25.33417) Search nearby
B1950.0 08 25 37.79 +25 30 02.8
Proper motion
RA: -5.6 +/- 2.2 mas/yDec: 5.9 +/- 1.6 mas/ySource: UCAC4
Galactic coord. 198.548 +31.740
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1SWASP J082836.92+252003.2 2MASS J08283691+2520030 AAVSO 0822+25
APOP 61336+0000571 ASASSN-V J082836.99+252002.8 AllWISE J082836.92+252003.1
CMC15 J082836.9+252003 CSS_J082836.9+252002 Downes AT Cnc
GALEX J082836.9+252003 GJ 2068 GJ 2068.0
GR 151 GSC 01944-01001 GSC2.3 N9EG000571
MLS_J082836.9+252003 Mrk 388 NSVS 7396915
PPMX J082836.9+252003 SDSS J082836.92+252003.0 Ton 323
UCAC2 40684326 UCAC4 577-042783 UGCA 139
ULAS J082836.92+252003.1 URAT1 577-163203 USNO-A2.0 1125-05637562
USNO-B1.0 1153-0157300 WISE J082836.92+252003.2 XPM 230-0285834
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Variability type
NA+UGZ/DQ:
Spectral type DAe+K7/M0V
Mag. range
12.5 - 15.8 V
Discoverer Giuliano Romano and Marino Perissinotto (1968)
Epoch
07 Mar 2018 (HJD 2458184.975) Ephemeris
Outburst 1645:
Period 0.2016 d  (4.84 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto 26.7 min. variations are likely the spin period in an intermediate polar.
2 Schmeer, Patrick The range given in the table is for the dwarf nova eruptions. Gaia DR2 parallax 2.2008 0.0468 mas (distance 454 10 pc). SIMBAD identifier SV* SON 323 is wrong (confusion with Ton 323?).
3 Otero, Sebastian Alberto GCVS outburst cycle 14 d.
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References
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1 Bruch, A.; Boardman, J.; Cook, L. M.; et al., 2018, Coherent brightness
modulations in the dwarf nova AT Cancri
2018arXiv180905640B
2 Shara, M. M.; Drissen, L.; Martin, T.; et. al., 2016, When does an old nova
become a dwarf nova? Kinematics and age of the nova shell of the dwarf nova
AT Cancri
2017MNRAS.465..739S
3 Light curve from CRTS/CSS (Drake et al. 2009, ApJ, 696, 870) 2009ApJ...696..870D
4 A.W. Shafter, J.K. Cannizzo, E.O. Waagen, 2005, PASP 117, 931 2005PASP..117..931S
5 R.A.Downes, 2001, PASP 113, 764 (2006 archival) 2005JAD....11....2D
6 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
7 H.E.Bond, BAAS 8, N1, 183, 1976. --
8 Romano, G.; Perissinotto, M., 1968, Osservazioni di stelle variabili in un
campo attorno a YZ Cancri
1968MmSAI..39..429R
9 G.Romano, M.Perissinotto, Padova Publ N151, 1968. --
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 = 12.48H = 12.33K = 12.24J - K = 0.25
AllWISE W1 = 12.53W2 = 12.41W3 = 11.69W1 - W2 = 0.12
APASS-DR9 B = 14.80V = 14.46g' = 14.68r' = 14.41i' = 14.25B - V = 0.34
SDSS-DR12 u = 13.83g = 13.72r = 13.89i = 13.71z = 13.70u - g = 0.11r - i = 0.18
Images
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Supporting Documents
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Campaigns/Programs
 Z CamPaign
 Legacy CVs
Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
6 Otero, Sebastian Alberto 2018-09-21 18:08 UTC Type, period and epoch from 2018arXiv180905640B. Range from AAVSO data.
5 Schmeer, Patrick 2018-05-01 11:42 UTC Discoverers added from 1968MmSAI..39..429R. Type and possible eruption year added from 2017MNRAS.465..739S.
4 Otero, Sebastian Alberto 2011-01-13 20:05 UTC Primary record creation. Orbital period from Downes (2001). Range from AAVSO V-data. Spectral type from Ritter and Kolb (2003A&A...404..301R). UCAC3 position.
3 Admin, VSX 2010-01-04 23:43 UTC Position updated from the GCVS version of November 2009.
2 Admin, VSX 2009-03-13 23:25 UTC Update from [2005PASP..117..931S].
1 Admin, VSX 2005-12-17 20:33 UTC Initial upload.