Double Star Calculator - Orbit

Orbital Elements for STF67
WDS: STF67 WDS ID/Discoverer
P: 4133.000 Orbital period (years)
a: 5.982 Semi-major axis (arcseconds)
i: 113.3 Inclination (degrees)
Ω: 216.0 Longitude of ascending node (degrees)
T: 1741.000 Epoch of periastron passage (year)
e: 0.908 Eccentricity
ω: 102.0 Longitude of periastron (degrees)
Start-Year: -41.5 Year
End-Year: 4091.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF67
Position: 005207.59+103603.7 Epoch-2000 right ascension and declination
WDS-ID: 00521+1036 WDS designation
Discoverer Code: STF67 Discover designation and components
ADS number: 709 Aitken Double Star catalog
HD number: 4936 HD catalog number
Hipparcos number: 4065 Hipparcos catalog number
V1: 8.98 Magnitude of the primary
V2: 9.56 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Hrt2011a Reference

Double Star Orbit for STF67



WDS 6th Orbit including measures of STF67

-- 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 STF67
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.312   348.39
--------------------------
-41.50    5.191   272.13
-31.50    5.196   271.94
-21.50    5.200   271.74
-11.50    5.204   271.55
-1.50    5.209   271.36
8.50    5.213   271.17
18.50    5.217   270.98
28.50    5.221   270.79
38.50    5.224   270.60
48.50    5.228   270.41
58.50    5.231   270.23
68.50    5.235   270.04
78.50    5.238   269.85
88.50    5.241   269.66
98.50    5.244   269.47
108.50    5.247   269.28
118.50    5.249   269.10
128.50    5.252   268.91
138.50    5.254   268.72
148.50    5.256   268.54
158.50    5.259   268.35
168.50    5.261   268.16
178.50    5.262   267.98
188.50    5.264   267.79
198.50    5.266   267.60
208.50    5.267   267.42
218.50    5.268   267.23
228.50    5.269   267.04
238.50    5.270   266.86
248.50    5.271   266.67
258.50    5.272   266.49
268.50    5.272   266.30
278.50    5.273   266.11
288.50    5.273   265.93
298.50    5.273   265.74
308.50    5.273   265.56
318.50    5.273   265.37
328.50    5.272   265.19
338.50    5.272   265.00
348.50    5.271   264.81
358.50    5.270   264.63
368.50    5.269   264.44
378.50    5.268   264.26
388.50    5.267   264.07
398.50    5.265   263.88
408.50    5.263   263.70
418.50    5.261   263.51
428.50    5.259   263.32
438.50    5.257   263.14
448.50    5.255   262.95
458.50    5.252   262.76
468.50    5.249   262.58
478.50    5.246   262.39
488.50    5.243   262.20
498.50    5.240   262.01
508.50    5.236   261.82
518.50    5.233   261.64
528.50    5.229   261.45
538.50    5.224   261.26
548.50    5.220   261.07
558.50    5.216   260.88
568.50    5.211   260.69
578.50    5.206   260.50
588.50    5.201   260.31
598.50    5.196   260.12
608.50    5.190   259.92
618.50    5.184   259.73
628.50    5.179   259.54
638.50    5.172   259.35
648.50    5.166   259.15
658.50    5.159   258.96
668.50    5.153   258.77
678.50    5.146   258.57
688.50    5.138   258.38
698.50    5.131   258.18
708.50    5.123   257.98
718.50    5.115   257.79
728.50    5.107   257.59
738.50    5.098   257.39
748.50    5.090   257.19
758.50    5.081   256.99
768.50    5.071   256.79
778.50    5.062   256.59
788.50    5.052   256.39
798.50    5.042   256.18
808.50    5.032   255.98
818.50    5.021   255.78
828.50    5.011   255.57
838.50    4.999   255.37
848.50    4.988   255.16
858.50    4.976   254.95
868.50    4.964   254.74
878.50    4.952   254.53
888.50    4.940   254.32
898.50    4.927   254.11
908.50    4.913   253.89
918.50    4.900   253.68
928.50    4.886   253.46
938.50    4.872   253.25
948.50    4.857   253.03
958.50    4.842   252.81
968.50    4.827   252.59
978.50    4.812   252.37
988.50    4.796   252.14
998.50    4.779   251.92
1008.50    4.763   251.69
1018.50    4.746   251.46
1028.50    4.728   251.23
1038.50    4.711   251.00
1048.50    4.692   250.76
1058.50    4.674   250.53
1068.50    4.655   250.29
1078.50    4.635   250.05
1088.50    4.615   249.81
1098.50    4.595   249.57
1108.50    4.574   249.32
1118.50    4.553   249.07
1128.50    4.531   248.82
1138.50    4.508   248.57
1148.50    4.486   248.31
1158.50    4.462   248.06
1168.50    4.438   247.80
1178.50    4.414   247.53
1188.50    4.389   247.27
1198.50    4.364   247.00
1208.50    4.337   246.72
1218.50    4.311   246.45
1228.50    4.283   246.17
1238.50    4.255   245.88
1248.50    4.227   245.60
1258.50    4.197   245.31
1268.50    4.167   245.01
1278.50    4.137   244.71
1288.50    4.105   244.41
1298.50    4.073   244.10
1308.50    4.040   243.78
1318.50    4.006   243.46
1328.50    3.971   243.14
1338.50    3.936   242.81
1348.50    3.899   242.47
1358.50    3.862   242.13
1368.50    3.823   241.78
1378.50    3.784   241.42
1388.50    3.743   241.06
1398.50    3.701   240.69
1408.50    3.659   240.30
1418.50    3.614   239.91
1428.50    3.569   239.51
1438.50    3.522   239.10
1448.50    3.474   238.68
1458.50    3.424   238.25
1468.50    3.373   237.80
1478.50    3.320   237.34
1488.50    3.265   236.86
1498.50    3.209   236.37
1508.50    3.150   235.86
1518.50    3.089   235.33
1528.50    3.026   234.77
1538.50    2.961   234.20
1548.50    2.892   233.59
1558.50    2.821   232.96
1568.50    2.747   232.29
1578.50    2.669   231.59
1588.50    2.587   230.84
1598.50    2.501   230.04
1608.50    2.411   229.19
1618.50    2.315   228.26
1628.50    2.213   227.25
1638.50    2.104   226.15
1648.50    1.987   224.91
1658.50    1.861   223.52
1668.50    1.723   221.91
1678.50    1.572   220.00
1688.50    1.403   217.67
1698.50    1.213   214.64
1708.50    0.993   210.37
1718.50    0.734   203.34
1728.50    0.436   187.35
1738.50    0.220   122.77
1748.50    0.436    59.09
1758.50    0.708    42.64
1768.50    0.919    34.80
1778.50    1.081    29.63
1788.50    1.211    25.70
1798.50    1.319    22.48
1808.50    1.410    19.70
1818.50    1.490    17.25
1828.50    1.561    15.03
1838.50    1.624    12.99
1848.50    1.682    11.10
1858.50    1.735     9.33
1868.50    1.784     7.66
1878.50    1.830     6.08
1888.50    1.873     4.57
1898.50    1.914     3.13
1908.50    1.952     1.75
1918.50    1.989     0.42
1928.50    2.024   359.14
1938.50    2.058   357.90
1948.50    2.090   356.70
1958.50    2.122   355.53
1968.50    2.152   354.40
1978.50    2.181   353.30
1988.50    2.210   352.23
1998.50    2.238   351.19
2008.50    2.265   350.17
2018.50    2.292   349.17
2028.50    2.318   348.20
2038.50    2.343   347.25
2048.50    2.368   346.32
2058.50    2.393   345.40
2068.50    2.417   344.51
2078.50    2.441   343.64
2088.50    2.464   342.78
2098.50    2.487   341.93
2108.50    2.510   341.11
2118.50    2.533   340.29
2128.50    2.555   339.50
2138.50    2.577   338.71
2148.50    2.599   337.94
2158.50    2.620   337.18
2168.50    2.642   336.43
2178.50    2.663   335.70
2188.50    2.684   334.98
2198.50    2.705   334.27
2208.50    2.725   333.57
2218.50    2.746   332.88
2228.50    2.766   332.20
2238.50    2.786   331.52
2248.50    2.807   330.86
2258.50    2.827   330.21
2268.50    2.846   329.57
2278.50    2.866   328.94
2288.50    2.886   328.31
2298.50    2.905   327.70
2308.50    2.925   327.09
2318.50    2.944   326.49
2328.50    2.963   325.90
2338.50    2.982   325.31
2348.50    3.001   324.74
2358.50    3.020   324.17
2368.50    3.039   323.60
2378.50    3.058   323.05
2388.50    3.077   322.50
2398.50    3.095   321.96
2408.50    3.114   321.42
2418.50    3.132   320.89
2428.50    3.151   320.37
2438.50    3.169   319.85
2448.50    3.187   319.34
2458.50    3.205   318.83
2468.50    3.223   318.33
2478.50    3.241   317.84
2488.50    3.259   317.35
2498.50    3.277   316.87
2508.50    3.295   316.39
2518.50    3.313   315.91
2528.50    3.330   315.45
2538.50    3.348   314.98
2548.50    3.366   314.52
2558.50    3.383   314.07
2568.50    3.400   313.62
2578.50    3.418   313.18
2588.50    3.435   312.74
2598.50    3.452   312.30
2608.50    3.469   311.87
2618.50    3.487   311.44
2628.50    3.504   311.02
2638.50    3.521   310.60
2648.50    3.537   310.19
2658.50    3.554   309.78
2668.50    3.571   309.37
2678.50    3.588   308.97
2688.50    3.604   308.57
2698.50    3.621   308.17
2708.50    3.638   307.78
2718.50    3.654   307.39
2728.50    3.670   307.00
2738.50    3.687   306.62
2748.50    3.703   306.24
2758.50    3.719   305.87
2768.50    3.735   305.50
2778.50    3.752   305.13
2788.50    3.768   304.76
2798.50    3.784   304.40
2808.50    3.799   304.04
2818.50    3.815   303.69
2828.50    3.831   303.33
2838.50    3.847   302.98
2848.50    3.862   302.63
2858.50    3.878   302.29
2868.50    3.894   301.95
2878.50    3.909   301.61
2888.50    3.924   301.27
2898.50    3.940   300.94
2908.50    3.955   300.61
2918.50    3.970   300.28
2928.50    3.985   299.95
2938.50    4.000   299.63
2948.50    4.015   299.30
2958.50    4.030   298.99
2968.50    4.045   298.67
2978.50    4.060   298.35
2988.50    4.074   298.04
2998.50    4.089   297.73
3008.50    4.104   297.42
3018.50    4.118   297.12
3028.50    4.133   296.81
3038.50    4.147   296.51
3048.50    4.161   296.21
3058.50    4.175   295.92
3068.50    4.190   295.62
3078.50    4.204   295.33
3088.50    4.218   295.04
3098.50    4.232   294.75
3108.50    4.245   294.46
3118.50    4.259   294.17
3128.50    4.273   293.89
3138.50    4.287   293.61
3148.50    4.300   293.33
3158.50    4.314   293.05
3168.50    4.327   292.77
3178.50    4.340   292.50
3188.50    4.354   292.22
3198.50    4.367   291.95
3208.50    4.380   291.68
3218.50    4.393   291.41
3228.50    4.406   291.15
3238.50    4.419   290.88
3248.50    4.432   290.62
3258.50    4.444   290.36
3268.50    4.457   290.10
3278.50    4.470   289.84
3288.50    4.482   289.58
3298.50    4.495   289.32
3308.50    4.507   289.07
3318.50    4.519   288.81
3328.50    4.531   288.56
3338.50    4.544   288.31
3348.50    4.556   288.06
3358.50    4.567   287.81
3368.50    4.579   287.57
3378.50    4.591   287.32
3388.50    4.603   287.07
3398.50    4.614   286.83
3408.50    4.626   286.59
3418.50    4.637   286.35
3428.50    4.649   286.11
3438.50    4.660   285.87
3448.50    4.671   285.63
3458.50    4.682   285.40
3468.50    4.693   285.16
3478.50    4.704   284.93
3488.50    4.715   284.70
3498.50    4.726   284.46
3508.50    4.737   284.23
3518.50    4.747   284.00
3528.50    4.758   283.77
3538.50    4.768   283.55
3548.50    4.778   283.32
3558.50    4.789   283.09
3568.50    4.799   282.87
3578.50    4.809   282.65
3588.50    4.819   282.42
3598.50    4.829   282.20
3608.50    4.838   281.98
3618.50    4.848   281.76
3628.50    4.858   281.54
3638.50    4.867   281.32
3648.50    4.877   281.10
3658.50    4.886   280.89
3668.50    4.895   280.67
3678.50    4.904   280.46
3688.50    4.913   280.24
3698.50    4.922   280.03
3708.50    4.931   279.82
3718.50    4.940   279.60
3728.50    4.948   279.39
3738.50    4.957   279.18
3748.50    4.965   278.97
3758.50    4.974   278.76
3768.50    4.982   278.55
3778.50    4.990   278.35
3788.50    4.998   278.14
3798.50    5.006   277.93
3808.50    5.014   277.73
3818.50    5.022   277.52
3828.50    5.029   277.32
3838.50    5.037   277.11
3848.50    5.044   276.91
3858.50    5.052   276.71
3868.50    5.059   276.51
3878.50    5.066   276.30
3888.50    5.073   276.10
3898.50    5.080   275.90
3908.50    5.087   275.70
3918.50    5.093   275.50
3928.50    5.100   275.30
3938.50    5.106   275.11
3948.50    5.113   274.91
3958.50    5.119   274.71
3968.50    5.125   274.51
3978.50    5.131   274.32
3988.50    5.137   274.12
3998.50    5.143   273.93
4008.50    5.148   273.73
4018.50    5.154   273.54
4028.50    5.160   273.34
4038.50    5.165   273.15
4048.50    5.170   272.95
4058.50    5.175   272.76
4068.50    5.180   272.57
4078.50    5.185   272.38
4088.50    5.190   272.18






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 14:44:15



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