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Details for Revision 1
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Name
  Swift J2138.8+5544  
AAVSO UID
--  
Constellation
Cepheus Sequence
J2000.0
21 38 49.91 +55 44 05.7  (324.70796 +55.73492) Search nearby
B1950.0 21 37 12.89 +55 30 29.7
Galactic coord. 98.111 +2.438
Other names

(Internal only)
1SXPS J213850.0+554403 IPHAS J213849.90+554405.6 URAT1 729-370833
USNO-A2.0 1425-12134110 USNO-B1.0 1457-0366630 WISE J213850.00+554404.7
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Variability type
DQ
Spectral type --
Mag. range
16.6 - 17.1 r
Discoverer --
Epoch
--
Outburst --
Period 0.1843 d  (4.42 h)
Rise/eclipse dur. --
Remarks
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1 Otero, Sebastian Alberto Spin period 989.2 s.
2 Denisenko, Denis WD spin period 989.430 s.
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References
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1 Halpern, J. P.; et al., 2018, Optical studies of 15 hard X-ray selected
cataclysmic binaries		 2018AJ....155..247H
2 Nichelli, E.; Israel, G. L.; Moretti, A.; et al., 2009, ATel #2354 2009ATel.2354....1N
External Links
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Supporting Documents
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2 Swift J2138.8+5544 light curve Denisenko, Denis 2020-03-18 23:44 UTC Light curve in g and r filters from ZTF data
1 Swift J2138.8+5544 finder chart Denisenko, Denis 2020-03-12 16:30 UTC Color-combined DSS finder chart with 5'x5' FOV (2x zoom)
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Revision History
Currently approved revision is checked. Click revision number to view details of that revision.
3 Otero, Sebastian Alberto 2021-05-12 21:43 UTC Remark from 2018AJ....155..247H.
2 Denisenko, Denis 2020-03-18 23:44 UTC Range updated. Light curve corrected.
1 Denisenko, Denis 2020-03-12 23:13 UTC Type from 2009ATel.2354....1N. Periods from 2018AJ....155..247H. Range from ZTF data. Gaia DR2 position.

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