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  Z Cam  
000-BBP-631 (144360 observations)  
Camelopardalis Sequence
08 25 13.18 +73 06 39.1  (126.30492 +73.11086) Search nearby
B1950.0 08 19 39.72 +73 16 23.6
Proper motion
RA: -8.901 +/- 0.486 mas/yDec: -19.133 +/- 1.224 mas/ySource: Gaia DR1
Galactic coord. 141.382 +32.629
Other names

(Internal only)
Please note that aliases shown in grey link to obsolete records.
1AXG J082519+7306 1RXS J082513.1+730634 1SXPS J082513.9+730641
2E 0819.7+7316 2E 1972 2MASS J08251318+7306391
AAVSO 0814+73 AMP EO0680-0075063 AN 183.1904
APOP 59297+0000237 ASASSN-V J082513.09+730638.5 AllWISE J082513.17+730639.1
CMC 306041 CMC 906818 Downes Z Cam
GALEX J082513.5+730638 GSC 04380-01032 GSC2.3 N7TT000237
HV 81473 IOMC 4380000091 NSVS 693328
NSVS 772561 PBC J0825.4+7306 PLX 1979.01
PPMX J082513.1+730639 RX J0825.2+7306 TYC 4380-1032-1
UCAC4 816-016125 URAT1 816-068952 USNO-A2.0 1575-02857529
USNO-B1.0 1631-0075899 WISE J082513.16+730639.1 XMMSL2 J082513.3+730641
XSS J08300+7313    
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Variability type
Spectral type pec(UG)+K7V
Mag. range
10.0 - 14.5 V
Discoverer Henry Park Hollis et al. (1904)
Outburst -76:
Period 0.289841 d  (6.9562 h)
Rise/eclipse dur. --
Some references may be clicked to view in new window. Roll over index number to view submission details.
1 Schmeer, Patrick Combined GALEX images reveal an arc of UV-emitting material with a radius r ~ 15', centred roughly on, and located southwest of, Z Cam (2007Natur.446..159S). This shell could be the result of a possible nova eruption observed by Chinese imperial astrologers in October–November 77 BCE (2007Natur.448..251J, 2012ApJ...756..107S). Maximum magnitude is for the dwarf nova outbursts.
2 Schmeer, Patrick Discovered photographically in 1904 at the Royal Observatory, Greenwich, in the course of the work for the Astrographic Catalogue under Henry Park Hollis's direction (1904MNRAS..64..837). Gaia DR2 parallax 4.4369 ± 0.0403 mas (distance 223.9 ± 2.1 pc).
3 GCVS Team SB2. Lower conjunction of the G component T = 2438470.841 + 0.289840d*E [R.P.Kraft, W.Krzeminski, G.S.Mumford, ApJ 158, 589, 1969.]. Outside outbursts the light curve is modulated with spectroscopic elements and has a shoulder at the phase 0.88P and a broad, shallow dip at the phase 0.15P. Outside maxima flickering up to 0.5m with P ~ 16s - 18s is observed. During maxima brightness fluctuations are small [R.P.Kraft, W.Krzeminski, G.S.Mumford, ApJ 158, 589, 1969., E.L.Robinson, ApJ 180, 121, 1973.].
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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 J. Alfonso-Garzon, A. Domingo, J.M. Mas-Hesse, A. Gimenez, 2012,
arXiv:1210.0821 [astro-ph.IM] (online info)
3 Shara, M. M.; Mizusawa, T.; Zurek, D.; et al., 2012, The inter-eruption
timescale of classical novae from expansion of the Z Camelopardalis shell
4 Johansson, G. H. I., 2007, Chinese recorded classical nova two millennia
5 Shara, M. M.; Martin, C. D.; Seibert, M.; et al., 2007, An ancient nova
shell around the dwarf nova Z Camelopardalis
6 R.A.Downes, 2001, PASP 113, 764 (2006 archival) 2005JAD....11....2D
7 R.A. Downes et al., 2001, PASP 113, 764 2001PASP..113..764D
8 Christie, W., 1904, New variable stars found on the astrographic plates,
Greenwich, Royal Observatory
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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 = 11.57H = 11.04K = 10.86J - K = 0.71
AllWISE W1 = 10.23W2 = 10.17W3 = 9.67W1 - W2 = 0.06
APASS-DR9 B = 11.97V = 11.91g' = 11.98r' = 11.93i' = 11.88B - V = 0.05
Please review Digitized Sky Survey Acknowledgment and Copyright.
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Supporting Documents
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 Z CamPaign
 Legacy CVs
Revision History
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6 Otero, Sebastian Alberto 2020-05-24 14:54 UTC Position from the GCVS (November 2019 version).
5 Schmeer, Patrick 2019-04-29 18:03 UTC Type from 2007Natur.446..159S. Possible eruption year from 2007Natur.448..251J.
4 Schmeer, Patrick 2018-06-25 06:16 UTC Gaia DR2 position. Discoverer and remark added.
3 Otero, Sebastian Alberto 2011-01-05 20:32 UTC Primary record creation. Orbital period from Downes (2001). GCVS outburst cycle 22 d.
Spectral type from Ritter and Kolb (2003A&A...404..301R). UCAC3 position.
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.