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Latest Details
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Name
  Gusev 4  
AAVSO UID
000-BPH-773 (No observations)  
Constellation
Cygnus Sequence
J2000.0
21 22 40.21 +49 35 39.2  (320.66754 +49.59422) Search nearby
B1950.0 21 20 56.28 +49 22 46.4
Galactic coord. 92.126 -0.368
Other names

(Internal only)
2MASS J21224020+4935392 CMC15 J212240.2+493539 GSC2.2 N032101335177
GSC2.3 N2TJ035177 IPHAS J212240.21+493539.2 URAT1 698-409729
USNO-B1.0 1395-0396648 WISE J212240.24+493539.9  
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Variability type
EA
Spectral type --
Mag. range
17.3 - <21.0 r
Discoverer Andrey Gusev
Epoch
25 Aug 2010 (HJD 2455433.6) Ephemeris
Outburst --
Period 43.102 d
Rise/eclipse dur. 23%  (9.9 d)
Remarks
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1 Nasonov, Dmitry ATLAS magnitudes partially contaminated by 2MASS J21224058+4935454 (V= 17.4; sep. 7").
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References
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1 Masci, F. J.; et al., 2019, The Zwicky Transient Facility: Data Processing,
Products, and Archive		 2019PASP..131a8003M
2 Tonry, J. L.; et al., 2018, ATLAS: A High-cadence All-sky Survey System 2018PASP..130f4505T
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Images
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Supporting Documents
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4 Gusev 4 updated phase plot Nasonov, Dmitry 2024-01-18 20:10 UTC Light curve from ZTF DR19, ATLAS and PS1 DR2 data folded with the best orbital period
3 Gusev 4 phase plot Denisenko, Denis 2022-03-23 12:12 UTC Light curve from ZTF DR10 folded with the best orbital period
2 Gusev 4 finder chart Denisenko, Denis 2022-03-23 12:11 UTC Color-combined DSS finder chart with 5'x5' FOV
1 Gusev 4 light curve Denisenko, Denis 2022-03-23 12:11 UTC Light curve from ZTF DR10
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Revision History
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2 Nasonov, Dmitry 2024-01-15 18:28 UTC Period, epoch and eclipse duration from ATLAS, ZTF DR19 and PS1 DR2 data.
1 Denisenko, Denis 2022-03-24 08:32 UTC Gaia EDR3 position.

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