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Latest Details
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| Name |
77 Cyg A |
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| AAVSO UID |
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000-BCP-199 (No observations) |
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| Constellation |
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| J2000.0 |
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| B1950.0 |
21 40 22.26 +40 50 52.8 |
| Galactic coord. |
88.841 -8.956 |
Other names
(Internal only)
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1SXPS J214223.7+410439 |
2MASS J21422294+4104373 |
AG+40 2246 |
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BD+40 4615 |
BMAM-V721 |
CCDM J21424+4105A |
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GC 30394 |
GSC 03188-01949 |
HD 206644 |
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HIP 107162 |
HR 8300 |
IRAS 21403+4050 |
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PGC 5579 |
PPM 61902 |
SAO 51207 |
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TIC 305308009 |
TYC 3188-1949-1 |
WDS J21424+4105A |
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WEB 19356 |
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(Not logged in) Add name
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| Variability type |
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ELL |
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| Spectral type |
A1V |
| Mag. range |
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6.31 V (0.008)TESS |
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| Discoverer |
Mariusz Bajer |
| Epoch |
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| Outburst |
-- |
| Period |
1.7285 d |
| Rise/eclipse dur. |
-- |
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Remarks
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Some references may be clicked to view in new window. Roll over index number to view submission details.
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1 |
Bajer, Mariusz
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Sextuple system. Pair AB is a visual binary (combined magnitude 5.73 V) with sep. 0.2" composed of two spectroscopic binaries: P= 26.49 yr, a= 0.153", e= 0.333 (see: 2012A&A...546A..69M). Component A (magnitude 6.31 V) showing ELL variability is a spectroscopic binary: P= 1.72897 d, e= 0.00, K= 110 km/s, V0= -25.5 km/s (see: 1980BICDS..19...71K). Component B (magnitude 6.69 V) is a spectroscopic binary: P= 35 d, spectral type B8V (see: 2008MNRAS.389..925T). HD 206656AB (WDS 21426+4103AB, combined V= 7.54) also belongs to this sextuple system and it's a visual binary with sep. 0.4" (see: 2011AJ....142...56H) at distance 159" from 77 Cyg, P= 109 yr (see: 2008MNRAS.389..925T). TESS magnitudes contaminated by 77 Cyg B (V= 6.69; sep. 0.2"). Amplitude has been corrected. Combined amplitude 0.004 TESS. |
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References
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Click reference title/citation to view in new window. Roll over index number to view submission details.
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1 |
Ricker, G. R.; et al., 2014, Transiting Exoplanet Survey Satellite (TESS) |
2014SPIE.9143E..20R |
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2 |
Malkov, O. Yu.; et al., 2012, Dynamical masses of a selected sample of
orbital binaries |
2012A&A...546A..69M |
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Hartkopf, W. I.; et al., 2011, Speckle Interferometry at the USNO Flagstaff
Station: Observations Obtained in 2008 and Nine New Orbits |
2011AJ....142...56H |
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Tokovinin, A., 2008, Comparative statistics and origin of triple and
quadruple stars |
2008MNRAS.389..925T |
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5 |
Kraicheva, Z.; et al., 1980, Catalogue of physical parameters of
spectroscopic binary stars |
1980BICDS..19...71K |
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Revision History
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