Double Star Calculator - Orbit

Orbital Elements for STF1645AB
WDS: STF1645AB WDS ID/Discoverer
P: 3477.000 Orbital period (years)
a: 6.6 Semi-major axis (arcseconds)
i: 134.0 Inclination (degrees)
Ω: 184.0 Longitude of ascending node (degrees)
T: 3193.000 Epoch of periastron passage (year)
e: 0.76 Eccentricity
ω: 204.0 Longitude of periastron (degrees)
Start-Year: 286.5 Year
End-Year: 3763.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1645AB
Position: 122804.45+444739.5 Epoch-2000 right ascension and declination
WDS-ID: 12281+4448 WDS designation
Discoverer Code: STF1645AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 7.49 Magnitude of the primary
V2: 8.08 Magnitude of the secondary
Equinox: Equinox
Date: 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: Kiy2020 Reference

Double Star Orbit for STF1645AB



WDS 6th Orbit including measures of STF1645AB

-- 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 STF1645AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    9.669   156.29
--------------------------
286.50    7.564   190.60
296.50    7.646   190.25
306.50    7.726   189.91
316.50    7.805   189.57
326.50    7.882   189.24
336.50    7.959   188.91
346.50    8.034   188.59
356.50    8.108   188.28
366.50    8.180   187.98
376.50    8.252   187.67
386.50    8.322   187.38
396.50    8.392   187.09
406.50    8.460   186.80
416.50    8.527   186.52
426.50    8.593   186.24
436.50    8.658   185.96
446.50    8.722   185.70
456.50    8.785   185.43
466.50    8.846   185.17
476.50    8.907   184.91
486.50    8.967   184.65
496.50    9.026   184.40
506.50    9.084   184.15
516.50    9.140   183.91
526.50    9.196   183.67
536.50    9.251   183.43
546.50    9.305   183.19
556.50    9.358   182.96
566.50    9.411   182.73
576.50    9.462   182.50
586.50    9.512   182.27
596.50    9.562   182.05
606.50    9.610   181.83
616.50    9.658   181.61
626.50    9.705   181.39
636.50    9.751   181.17
646.50    9.796   180.96
656.50    9.840   180.75
666.50    9.884   180.54
676.50    9.926   180.33
686.50    9.968   180.13
696.50   10.009   179.92
706.50   10.049   179.72
716.50   10.089   179.52
726.50   10.127   179.32
736.50   10.165   179.12
746.50   10.202   178.93
756.50   10.239   178.73
766.50   10.274   178.54
776.50   10.309   178.35
786.50   10.343   178.15
796.50   10.376   177.96
806.50   10.409   177.78
816.50   10.441   177.59
826.50   10.472   177.40
836.50   10.502   177.22
846.50   10.532   177.03
856.50   10.560   176.85
866.50   10.589   176.67
876.50   10.616   176.49
886.50   10.643   176.31
896.50   10.669   176.13
906.50   10.694   175.95
916.50   10.719   175.77
926.50   10.743   175.59
936.50   10.766   175.42
946.50   10.789   175.24
956.50   10.811   175.07
966.50   10.832   174.89
976.50   10.853   174.72
986.50   10.872   174.55
996.50   10.892   174.38
1006.50   10.910   174.21
1016.50   10.928   174.03
1026.50   10.946   173.86
1036.50   10.962   173.69
1046.50   10.978   173.53
1056.50   10.994   173.36
1066.50   11.008   173.19
1076.50   11.022   173.02
1086.50   11.036   172.85
1096.50   11.049   172.69
1106.50   11.061   172.52
1116.50   11.072   172.35
1126.50   11.083   172.19
1136.50   11.094   172.02
1146.50   11.103   171.86
1156.50   11.112   171.69
1166.50   11.121   171.53
1176.50   11.129   171.36
1186.50   11.136   171.20
1196.50   11.142   171.03
1206.50   11.148   170.87
1216.50   11.154   170.71
1226.50   11.159   170.54
1236.50   11.163   170.38
1246.50   11.166   170.22
1256.50   11.169   170.05
1266.50   11.172   169.89
1276.50   11.174   169.73
1286.50   11.175   169.56
1296.50   11.175   169.40
1306.50   11.175   169.24
1316.50   11.175   169.07
1326.50   11.174   168.91
1336.50   11.172   168.75
1346.50   11.170   168.58
1356.50   11.167   168.42
1366.50   11.163   168.26
1376.50   11.159   168.09
1386.50   11.155   167.93
1396.50   11.149   167.77
1406.50   11.144   167.60
1416.50   11.137   167.44
1426.50   11.130   167.28
1436.50   11.123   167.11
1446.50   11.115   166.95
1456.50   11.106   166.78
1466.50   11.097   166.62
1476.50   11.087   166.45
1486.50   11.076   166.28
1496.50   11.065   166.12
1506.50   11.054   165.95
1516.50   11.042   165.79
1526.50   11.029   165.62
1536.50   11.016   165.45
1546.50   11.002   165.28
1556.50   10.988   165.11
1566.50   10.973   164.95
1576.50   10.957   164.78
1586.50   10.941   164.61
1596.50   10.924   164.44
1606.50   10.907   164.26
1616.50   10.889   164.09
1626.50   10.871   163.92
1636.50   10.852   163.75
1646.50   10.833   163.58
1656.50   10.813   163.40
1666.50   10.792   163.23
1676.50   10.771   163.05
1686.50   10.749   162.88
1696.50   10.727   162.70
1706.50   10.704   162.52
1716.50   10.680   162.34
1726.50   10.656   162.17
1736.50   10.632   161.99
1746.50   10.607   161.80
1756.50   10.581   161.62
1766.50   10.555   161.44
1776.50   10.528   161.26
1786.50   10.500   161.07
1796.50   10.472   160.89
1806.50   10.444   160.70
1816.50   10.415   160.51
1826.50   10.385   160.33
1836.50   10.355   160.14
1846.50   10.324   159.95
1856.50   10.292   159.76
1866.50   10.260   159.56
1876.50   10.228   159.37
1886.50   10.195   159.17
1896.50   10.161   158.98
1906.50   10.127   158.78
1916.50   10.092   158.58
1926.50   10.056   158.38
1936.50   10.020   158.18
1946.50    9.983   157.97
1956.50    9.946   157.77
1966.50    9.908   157.56
1976.50    9.870   157.35
1986.50    9.831   157.14
1996.50    9.791   156.93
2006.50    9.751   156.72
2016.50    9.711   156.50
2026.50    9.669   156.29
2036.50    9.627   156.07
2046.50    9.585   155.85
2056.50    9.542   155.62
2066.50    9.498   155.40
2076.50    9.454   155.17
2086.50    9.409   154.94
2096.50    9.363   154.71
2106.50    9.317   154.48
2116.50    9.270   154.24
2126.50    9.223   154.01
2136.50    9.175   153.77
2146.50    9.126   153.52
2156.50    9.077   153.28
2166.50    9.027   153.03
2176.50    8.977   152.78
2186.50    8.926   152.52
2196.50    8.874   152.27
2206.50    8.822   152.01
2216.50    8.769   151.74
2226.50    8.715   151.48
2236.50    8.661   151.21
2246.50    8.606   150.93
2256.50    8.551   150.66
2266.50    8.494   150.38
2276.50    8.438   150.09
2286.50    8.380   149.80
2296.50    8.322   149.51
2306.50    8.263   149.22
2316.50    8.204   148.92
2326.50    8.144   148.61
2336.50    8.083   148.30
2346.50    8.022   147.99
2356.50    7.960   147.67
2366.50    7.897   147.34
2376.50    7.834   147.02
2386.50    7.770   146.68
2396.50    7.705   146.34
2406.50    7.640   145.99
2416.50    7.574   145.64
2426.50    7.507   145.28
2436.50    7.440   144.92
2446.50    7.371   144.55
2456.50    7.303   144.17
2466.50    7.233   143.78
2476.50    7.163   143.39
2486.50    7.092   142.99
2496.50    7.020   142.58
2506.50    6.948   142.16
2516.50    6.875   141.74
2526.50    6.801   141.30
2536.50    6.727   140.86
2546.50    6.652   140.40
2556.50    6.576   139.94
2566.50    6.499   139.46
2576.50    6.422   138.97
2586.50    6.344   138.47
2596.50    6.265   137.96
2606.50    6.186   137.44
2616.50    6.106   136.90
2626.50    6.025   136.34
2636.50    5.943   135.77
2646.50    5.861   135.19
2656.50    5.778   134.59
2666.50    5.694   133.97
2676.50    5.610   133.33
2686.50    5.524   132.68
2696.50    5.439   132.00
2706.50    5.352   131.30
2716.50    5.265   130.58
2726.50    5.177   129.83
2736.50    5.088   129.06
2746.50    4.999   128.25
2756.50    4.909   127.43
2766.50    4.819   126.56
2776.50    4.728   125.67
2786.50    4.636   124.74
2796.50    4.544   123.78
2806.50    4.451   122.77
2816.50    4.358   121.72
2826.50    4.264   120.62
2836.50    4.170   119.48
2846.50    4.076   118.28
2856.50    3.981   117.03
2866.50    3.886   115.71
2876.50    3.791   114.33
2886.50    3.696   112.87
2896.50    3.600   111.34
2906.50    3.505   109.73
2916.50    3.410   108.03
2926.50    3.316   106.22
2936.50    3.221   104.32
2946.50    3.128   102.30
2956.50    3.035   100.15
2966.50    2.944    97.87
2976.50    2.854    95.45
2986.50    2.765    92.87
2996.50    2.678    90.12
3006.50    2.594    87.19
3016.50    2.512    84.06
3026.50    2.433    80.73
3036.50    2.357    77.18
3046.50    2.284    73.39
3056.50    2.216    69.37
3066.50    2.151    65.10
3076.50    2.092    60.57
3086.50    2.036    55.79
3096.50    1.985    50.75
3106.50    1.938    45.46
3116.50    1.895    39.91
3126.50    1.853    34.11
3136.50    1.813    28.05
3146.50    1.771    21.71
3156.50    1.726    15.05
3166.50    1.675     8.01
3176.50    1.619     0.50
3186.50    1.557   352.43
3196.50    1.492   343.66
3206.50    1.430   334.11
3216.50    1.380   323.78
3226.50    1.349   312.80
3236.50    1.345   301.54
3246.50    1.371   290.45
3256.50    1.429   280.03
3266.50    1.514   270.59
3276.50    1.622   262.28
3286.50    1.747   255.08
3296.50    1.885   248.89
3306.50    2.031   243.57
3316.50    2.183   238.98
3326.50    2.338   234.99
3336.50    2.496   231.50
3346.50    2.653   228.42
3356.50    2.811   225.69
3366.50    2.968   223.25
3376.50    3.123   221.05
3386.50    3.276   219.06
3396.50    3.428   217.25
3406.50    3.577   215.59
3416.50    3.724   214.06
3426.50    3.869   212.65
3436.50    4.012   211.34
3446.50    4.152   210.12
3456.50    4.290   208.97
3466.50    4.425   207.90
3476.50    4.559   206.89
3486.50    4.690   205.94
3496.50    4.818   205.04
3506.50    4.945   204.18
3516.50    5.069   203.37
3526.50    5.192   202.60
3536.50    5.312   201.86
3546.50    5.430   201.15
3556.50    5.546   200.48
3566.50    5.660   199.83
3576.50    5.773   199.20
3586.50    5.883   198.61
3596.50    5.992   198.03
3606.50    6.098   197.47
3616.50    6.203   196.93
3626.50    6.307   196.41
3636.50    6.408   195.91
3646.50    6.508   195.42
3656.50    6.606   194.95
3666.50    6.703   194.49
3676.50    6.798   194.04
3686.50    6.892   193.61
3696.50    6.984   193.18
3706.50    7.075   192.77
3716.50    7.164   192.37
3726.50    7.252   191.98
3736.50    7.338   191.59
3746.50    7.423   191.22
3756.50    7.507   190.85






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 16:46:32



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