Double Star Calculator - Orbit

Orbital Elements for STF1217

WDS:	STF1217	WDS ID/Discoverer
P:	16000.000	Orbital period (years)
a:	21.0	Semi-major axis (arcseconds)
i:	81.0	Inclination (degrees)
Ω:	235.0	Longitude of ascending node (degrees)
T:	6845.000	Epoch of periastron passage (year)
e:	0.94	Eccentricity
ω:	212.0	Longitude of periastron (degrees)
Start-Year:	-5975.0	Year
End-Year:	10025.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1217
Position:	082415.65+445659.0	Epoch-2000 right ascension and declination
WDS-ID:	08243+4457	WDS designation
Discoverer Code:	STF1217	Discover designation and components
ADS number:	6783	Aitken Double Star catalog
HD number:	70516	HD catalog number
Hipparcos number:	41184	Hipparcos catalog number
V1:	7.79	Magnitude of the primary
V2:	9.39	Magnitude of the secondary
Equinox:		Equinox
Date:	2005	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Kis2009	Reference

Double Star Orbit for STF1217

WDS 6th Orbit including measures of STF1217

-- Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements) --

Legend:

Green plus signs:	Visual (micrometric) measures
Violet asterisks:	Photographic measures
Blue symbols:	Various interferometric techniques
Dot-dash line:	Indicates the line of nodes

Ephemeris of STF1217

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   28.603   242.21
--------------------------
-5975.00   28.685   238.28
-5875.00   29.053   238.34
-5775.00   29.407   238.40
-5675.00   29.748   238.47
-5575.00   30.075   238.52
-5475.00   30.390   238.58
-5375.00   30.692   238.64
-5275.00   30.983   238.69
-5175.00   31.261   238.75
-5075.00   31.528   238.80
-4975.00   31.783   238.86
-4875.00   32.028   238.91
-4775.00   32.262   238.96
-4675.00   32.485   239.01
-4575.00   32.698   239.06
-4475.00   32.901   239.11
-4375.00   33.094   239.16
-4275.00   33.277   239.21
-4175.00   33.450   239.25
-4075.00   33.614   239.30
-3975.00   33.769   239.35
-3875.00   33.915   239.39
-3775.00   34.051   239.44
-3675.00   34.179   239.48
-3575.00   34.298   239.53
-3475.00   34.408   239.57
-3375.00   34.509   239.62
-3275.00   34.602   239.66
-3175.00   34.687   239.71
-3075.00   34.763   239.75
-2975.00   34.832   239.80
-2875.00   34.892   239.84
-2775.00   34.944   239.88
-2675.00   34.988   239.93
-2575.00   35.024   239.97
-2475.00   35.052   240.01
-2375.00   35.073   240.06
-2275.00   35.086   240.10
-2175.00   35.091   240.14
-2075.00   35.088   240.18
-1975.00   35.078   240.23
-1875.00   35.061   240.27
-1775.00   35.035   240.31
-1675.00   35.003   240.36
-1575.00   34.963   240.40
-1475.00   34.915   240.44
-1375.00   34.861   240.49
-1275.00   34.798   240.53
-1175.00   34.729   240.57
-1075.00   34.652   240.62
-975.00   34.568   240.66
-875.00   34.477   240.71
-775.00   34.378   240.75
-675.00   34.272   240.80
-575.00   34.159   240.84
-475.00   34.038   240.89
-375.00   33.911   240.93
-275.00   33.776   240.98
-175.00   33.633   241.03
-75.00   33.484   241.07
25.00   33.327   241.12
125.00   33.163   241.17
225.00   32.991   241.22
325.00   32.812   241.27
425.00   32.626   241.32
525.00   32.432   241.37
625.00   32.231   241.42
725.00   32.022   241.47
825.00   31.806   241.52
925.00   31.583   241.57
1025.00   31.351   241.63
1125.00   31.112   241.68
1225.00   30.866   241.73
1325.00   30.611   241.79
1425.00   30.349   241.85
1525.00   30.079   241.91
1625.00   29.801   241.96
1725.00   29.515   242.03
1825.00   29.221   242.09
1925.00   28.919   242.15
2025.00   28.608   242.21
2125.00   28.289   242.28
2225.00   27.962   242.35
2325.00   27.626   242.41
2425.00   27.281   242.48
2525.00   26.928   242.56
2625.00   26.565   242.63
2725.00   26.194   242.71
2825.00   25.813   242.78
2925.00   25.423   242.87
3025.00   25.024   242.95
3125.00   24.615   243.03
3225.00   24.196   243.12
3325.00   23.767   243.22
3425.00   23.327   243.31
3525.00   22.877   243.41
3625.00   22.416   243.51
3725.00   21.945   243.62
3825.00   21.462   243.73
3925.00   20.967   243.85
4025.00   20.461   243.98
4125.00   19.942   244.10
4225.00   19.411   244.24
4325.00   18.866   244.39
4425.00   18.309   244.54
4525.00   17.737   244.70
4625.00   17.151   244.88
4725.00   16.550   245.06
4825.00   15.933   245.26
4925.00   15.300   245.48
5025.00   14.650   245.72
5125.00   13.982   245.98
5225.00   13.295   246.26
5325.00   12.589   246.58
5425.00   11.861   246.93
5525.00   11.111   247.33
5625.00   10.337   247.79
5725.00    9.538   248.33
5825.00    8.711   248.97
5925.00    7.855   249.74
6025.00    6.966   250.71
6125.00    6.041   251.97
6225.00    5.078   253.69
6325.00    4.073   256.25
6425.00    3.027   260.53
6525.00    1.952   269.49
6625.00    0.963   298.65
6725.00    0.946    19.96
6825.00    1.404    53.84
6925.00    1.651   223.36
7025.00    4.284   230.50
7125.00    6.337   232.43
7225.00    8.067   233.46
7325.00    9.585   234.14
7425.00   10.948   234.65
7525.00   12.192   235.04
7625.00   13.339   235.37
7725.00   14.407   235.64
7825.00   15.407   235.88
7925.00   16.347   236.09
8025.00   17.235   236.28
8125.00   18.076   236.45
8225.00   18.876   236.60
8325.00   19.637   236.75
8425.00   20.363   236.88
8525.00   21.057   237.00
8625.00   21.721   237.12
8725.00   22.357   237.23
8825.00   22.967   237.33
8925.00   23.553   237.43
9025.00   24.115   237.52
9125.00   24.655   237.61
9225.00   25.175   237.70
9325.00   25.675   237.78
9425.00   26.155   237.86
9525.00   26.618   237.93
9625.00   27.064   238.01
9725.00   27.492   238.08
9825.00   27.905   238.15
9925.00   28.303   238.21

Disclaimer

This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 4.0.

Acknowledgements

The Double Star Calculator - Orbital Elements makes use of the Washington Double Star Sixth Catalog of Orbits of Visual Binary Stars, maintained at the U.S. Naval Observatory.

Report Information

Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 16:07:00