Basic data (System:1058)
C1900.0 | : | 18229+7241
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C2000.0 | : | 182103383+72435824
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Comp. | :
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Magn. | : | 3.57(V)
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Spect. | : | F7V
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Identifiers:
Bayer $\chi$ Dra | BD +72 839 | Flamsteed 44 Dra | GAIADR2 2266693630693473024
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GAIADR3 2266693630693473024 | GJ 713 | HD 170153 | HIP 89937
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HR 6927
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Orbit
Element | | Value | Std. dev.
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Period (d.) | : | 280.517 | 0.0620912
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Periastron time (xJD-2,400,000.0) | : | 46005.6 | 0.531363
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Reference T0/epoch | : | JD
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Eccentricity | : | 0.413921 | 0.0083
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omega primary (deg.) | : | 119.861 | 0.97
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K1 (km/s) | : | 17.3152 | 0.18
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K2 (km/s) | : | 24.3417 | 0.44
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V0 (km/s) | : | 31.8999 | 0.14
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sigma residuals primary | : | 0.734159
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sigma residuals secondary | : | 2.18931
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#RV primary | : | 29
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#RV secondary | : | 28
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Grade | : | 5.0
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Contributor | : | PBX
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Status | : | PUB
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Bibcode | : | 2000A&AS..145..215P
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Derived quantities (on the fly, from the above quantities) |
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a1sini (km) | : | 6.08011e+07 | 680000
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a2sini (km) | : | 8.54741e+07 | 1.6e+06
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m1sin**3 i (sol.mass) | : | 0.929648 | 0.039
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m2sin**3 i (sol.mass) | : | 0.661295 | 0.02
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Note
Simultaneous adjustment of the visual and spectroscopic data (VB-SB2 system).
Radial velocities used in this orbit
xJD | Rad.Vel. | O-C or error | Weight | Component | Offset | Comment
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-2,400,000.0 | (km/s) | (km/s) | | | (km/s) |
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44356.9906 | 12.9 | 0.734 | 1.856 | a | |
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44358.0096 | 12.4 | 0.734 | 1.856 | a | |
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44358.0096 | 57.9 | 2.19 | 0.209 | b | |
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44359.0031 | 12.9 | 0.734 | 1.856 | a | |
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44359.0031 | 57.3 | 2.19 | 0.209 | b | |
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44362.0017 | 14.3 | 0.734 | 1.856 | a | |
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44362.0017 | 54.4 | 2.19 | 0.209 | b | |
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44374.6172 | 19 | 0.734 | 1.856 | a | |
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44374.6172 | 46.6 | 2.19 | 0.209 | b | |
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44404.4977 | 27 | 0.734 | 1.856 | a | |
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44404.4977 | 40.7 | 2.19 | 0.209 | b | |
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44439.4331 | 31.8 | 2.19 | 0.209 | b | |
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44439.4331 | 32.8 | 0.734 | 1.856 | a | |
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44534.5969 | 14 | 2.19 | 0.209 | b | |
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44534.5969 | 45.3 | 0.734 | 1.856 | a | |
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44626.0609 | 11.6 | 0.734 | 1.856 | a | |
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44626.0609 | 60.6 | 2.19 | 0.209 | b | |
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44627.0690 | 12.4 | 0.734 | 1.856 | a | |
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44627.0690 | 62.3 | 2.19 | 0.209 | b | |
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44832.7222 | 10.9 | 2.19 | 0.209 | b | |
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44832.7222 | 45.8 | 0.734 | 1.856 | a | |
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44895.6060 | 11.6 | 0.734 | 1.856 | a | |
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44895.6060 | 59.8 | 2.19 | 0.209 | b | |
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44898.5644 | 12.2 | 0.734 | 1.856 | a | |
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44898.5644 | 61.7 | 2.19 | 0.209 | b | |
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45104.9665 | 13 | 2.19 | 0.209 | b | |
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45104.9665 | 45 | 0.734 | 1.856 | a | |
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45755.0318 | 13.1 | 0.734 | 1.856 | a | |
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45755.0318 | 59.6 | 2.19 | 0.209 | b | |
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45942.6056 | 14.9 | 2.19 | 0.209 | b | |
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45942.6056 | 47.6 | 0.734 | 1.856 | a | |
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45960.6303 | 12.8 | 2.19 | 0.209 | b | |
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45960.6303 | 44.1 | 0.734 | 1.856 | a | |
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46710.4031 | 27.6 | 2.19 | 0.209 | b | |
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46710.4031 | 37.8 | 0.734 | 1.856 | a | |
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46767.2275 | 16 | 2.19 | 0.209 | b | |
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46767.2275 | 44.7 | 0.734 | 1.856 | a | |
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46843.7348 | 21.9 | 0.734 | 1.856 | a | |
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46843.7348 | 38 | 2.19 | 0.209 | b | |
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46849.6846 | 17.4 | 0.734 | 1.856 | a | |
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46849.6846 | 54.7 | 2.79 | 0.128 | b | |
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46884.5433 | 14.5 | 0.734 | 1.856 | a | |
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46884.5433 | 59.4 | 2.19 | 0.209 | b | |
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46937.5911 | 28.2 | 0.734 | 1.856 | a | |
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46937.5911 | 37.3 | 2.19 | 0.209 | b | |
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46985.5255 | 27 | 2.19 | 0.209 | b | |
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46985.5255 | 36.8 | 0.734 | 1.856 | a | |
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47004.4414 | 19.7 | 2.19 | 0.209 | b | |
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47004.4414 | 39 | 0.734 | 1.856 | a | |
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47027.4845 | 14.7 | 2.19 | 0.209 | b | |
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47027.4845 | 42.4 | 0.734 | 1.856 | a | |
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47029.3911 | 14.2 | 2.19 | 0.209 | b | |
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47029.3911 | 42 | 0.734 | 1.856 | a | |
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47037.4154 | 14.5 | 2.19 | 0.209 | b | |
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47037.4154 | 43.5 | 0.734 | 1.856 | a | |
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47042.4266 | 14.2 | 2.19 | 0.209 | b | |
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47042.4266 | 44 | 0.734 | 1.856 | a | |
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Plot
Encapsulated PostScript file
T. Merle