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Latest Details
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Name
  HD 206222  
AAVSO UID
000-BNR-355 (No observations)  
Constellation
Cepheus Sequence
J2000.0
21 38 45.77 +55 47 29.9  (324.69071 +55.79164) Search nearby
B1950.0 21 37 08.89 +55 33 54.1
Galactic coord. 98.142 +2.487
Other names

(Internal only)
1SXPS J213845.8+554728 2MASS J21384574+5547299 AG+55 1484
BD+55 2612 BMAM-V752 CCDM J21388+5547AB
GSC 03971-02054 IDS J21356+5520AB IPHAS J213845.87+554730.0
PPM 39700 SAO 33622 TDSC 59202AB
TIC 421714420 TYC 3971-2054-1 WDS J21388+5548AB
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Variability type
EA+DSCT+SPB:
Spectral type A0
Mag. range
7.87 V (0.095)TESS
Discoverer Mariusz Bajer
Epoch
23 Oct 2019 (HJD 2458780.191) Ephemeris
Outburst --
Period 41.124 d
Rise/eclipse dur. 0.96%  (0.4 d)
Remarks
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1 Bajer, Mariusz Pair AB is a visual binary (component A: V= 8.3; component B: V= 9.3; combined V= 7.87) with sep. 0.6". Eccentric system. Min II amplitude: 0.011 TESS at phase 0.489. Secondary eclipse duration 0.73%. SPB: period 0.520545 d., epoch HJD 2458779.776. DSCT period 0.0302957 d., epoch HJD 2458780.748. TESS magnitudes are for the blend of components A and B. Identification of the eclipsing binary is uncertain. Published spectral types range from B8 to A2. BP-G= -0.01; J-K= 0.03.
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References
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1 Ricker, G. R.; et al., 2014, Transiting Exoplanet Survey Satellite (TESS) 2014SPIE.9143E..20R
2 Ochsenbein, F., 1980, SAO and Supplementary Data 1980BICDS..19...74O
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Images
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Supporting Documents
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5 View on secondary eclipse Bajer, Mariusz 2020-09-29 22:54 UTC Light curve showing SPB+DSCT varaiblity with view on secondary eclipse.
4 HD 206222 SPB phase plot Bajer, Mariusz 2020-09-29 22:53 UTC SPB phase plot data from TESS.
3 View on primary eclipse Bajer, Mariusz 2020-09-29 22:52 UTC Light curve showing SPB+DSCT varaiblity with view on primary eclipse.
2 HD 206222 DSCT phase plot Bajer, Mariusz 2020-09-28 16:19 UTC DSCT phase plot data from TESS (Residuals).
1 HD 206222 EA phase plot Bajer, Mariusz 2020-09-28 14:54 UTC EA phase plot data from TESS.
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Revision History
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1 Bajer, Mariusz 2020-09-30 03:14 UTC Mean magnitude from Tycho. Spectral type from 1980BICDS..19...74O. Gaia DR2 position.

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