Double Star Calculator - Orbit

Orbital Elements for STF1767
WDS: STF1767 WDS ID/Discoverer
P: 3242.000 Orbital period (years)
a: 4.04 Semi-major axis (arcseconds)
i: 127.6 Inclination (degrees)
Ω: 27.0 Longitude of ascending node (degrees)
T: 3252.000 Epoch of periastron passage (year)
e: 0.47 Eccentricity
ω: 213.5 Longitude of periastron (degrees)
Start-Year: 404.0 Year
End-Year: 3646.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1767
Position: 133406.04+674607.9 Epoch-2000 right ascension and declination
WDS-ID: 13341+6746 WDS designation
Discoverer Code: STF1767 Discover designation and components
ADS number: 8959 Aitken Double Star catalog
HD number: 118328 HD catalog number
Hipparcos number: 66195 Hipparcos catalog number
V1: 9.26 Magnitude of the primary
V2: 9.56 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Kiy2016 Reference

Double Star Orbit for STF1767



WDS 6th Orbit including measures of STF1767

-- 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 STF1767
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.437   349.03
--------------------------
404.00    2.691    61.99
414.00    2.757    60.68
424.00    2.821    59.42
434.00    2.886    58.22
444.00    2.950    57.08
454.00    3.013    55.98
464.00    3.076    54.93
474.00    3.138    53.91
484.00    3.200    52.94
494.00    3.261    52.01
504.00    3.321    51.11
514.00    3.380    50.24
524.00    3.439    49.40
534.00    3.496    48.58
544.00    3.553    47.80
554.00    3.610    47.04
564.00    3.665    46.30
574.00    3.719    45.58
584.00    3.773    44.89
594.00    3.826    44.21
604.00    3.878    43.55
614.00    3.929    42.91
624.00    3.979    42.29
634.00    4.028    41.68
644.00    4.077    41.09
654.00    4.124    40.51
664.00    4.171    39.94
674.00    4.217    39.38
684.00    4.262    38.84
694.00    4.306    38.31
704.00    4.349    37.79
714.00    4.392    37.28
724.00    4.433    36.78
734.00    4.474    36.28
744.00    4.514    35.80
754.00    4.553    35.33
764.00    4.591    34.86
774.00    4.629    34.40
784.00    4.666    33.95
794.00    4.701    33.50
804.00    4.736    33.06
814.00    4.771    32.63
824.00    4.804    32.21
834.00    4.837    31.79
844.00    4.869    31.37
854.00    4.900    30.96
864.00    4.930    30.56
874.00    4.959    30.16
884.00    4.988    29.76
894.00    5.016    29.37
904.00    5.044    28.99
914.00    5.070    28.61
924.00    5.096    28.23
934.00    5.121    27.86
944.00    5.145    27.48
954.00    5.169    27.12
964.00    5.192    26.75
974.00    5.214    26.39
984.00    5.235    26.04
994.00    5.256    25.68
1004.00    5.276    25.33
1014.00    5.296    24.98
1024.00    5.314    24.63
1034.00    5.332    24.29
1044.00    5.350    23.95
1054.00    5.366    23.61
1064.00    5.382    23.27
1074.00    5.398    22.93
1084.00    5.412    22.60
1094.00    5.426    22.27
1104.00    5.440    21.94
1114.00    5.453    21.61
1124.00    5.465    21.28
1134.00    5.476    20.95
1144.00    5.487    20.63
1154.00    5.497    20.30
1164.00    5.507    19.98
1174.00    5.516    19.66
1184.00    5.524    19.34
1194.00    5.532    19.02
1204.00    5.539    18.70
1214.00    5.546    18.38
1224.00    5.552    18.07
1234.00    5.557    17.75
1244.00    5.562    17.44
1254.00    5.566    17.12
1264.00    5.570    16.81
1274.00    5.573    16.49
1284.00    5.576    16.18
1294.00    5.578    15.86
1304.00    5.579    15.55
1314.00    5.580    15.24
1324.00    5.580    14.92
1334.00    5.580    14.61
1344.00    5.579    14.30
1354.00    5.578    13.98
1364.00    5.576    13.67
1374.00    5.574    13.35
1384.00    5.571    13.04
1394.00    5.567    12.72
1404.00    5.564    12.41
1414.00    5.559    12.09
1424.00    5.554    11.78
1434.00    5.549    11.46
1444.00    5.543    11.14
1454.00    5.536    10.83
1464.00    5.529    10.51
1474.00    5.521    10.19
1484.00    5.513     9.87
1494.00    5.505     9.54
1504.00    5.496     9.22
1514.00    5.486     8.90
1524.00    5.477     8.57
1534.00    5.466     8.25
1544.00    5.455     7.92
1554.00    5.444     7.59
1564.00    5.432     7.26
1574.00    5.420     6.93
1584.00    5.407     6.60
1594.00    5.394     6.26
1604.00    5.380     5.93
1614.00    5.366     5.59
1624.00    5.351     5.25
1634.00    5.336     4.91
1644.00    5.321     4.56
1654.00    5.305     4.22
1664.00    5.289     3.87
1674.00    5.272     3.52
1684.00    5.255     3.17
1694.00    5.237     2.81
1704.00    5.219     2.45
1714.00    5.201     2.09
1724.00    5.182     1.73
1734.00    5.163     1.37
1744.00    5.143     1.00
1754.00    5.123     0.63
1764.00    5.102     0.26
1774.00    5.081   359.88
1784.00    5.060   359.50
1794.00    5.039   359.12
1804.00    5.017   358.73
1814.00    4.994   358.34
1824.00    4.971   357.95
1834.00    4.948   357.55
1844.00    4.925   357.15
1854.00    4.901   356.75
1864.00    4.877   356.34
1874.00    4.852   355.93
1884.00    4.827   355.51
1894.00    4.802   355.09
1904.00    4.776   354.66
1914.00    4.750   354.23
1924.00    4.724   353.80
1934.00    4.697   353.36
1944.00    4.671   352.91
1954.00    4.643   352.46
1964.00    4.616   352.01
1974.00    4.588   351.55
1984.00    4.560   351.08
1994.00    4.531   350.61
2004.00    4.503   350.13
2014.00    4.474   349.64
2024.00    4.444   349.15
2034.00    4.415   348.66
2044.00    4.385   348.15
2054.00    4.355   347.64
2064.00    4.325   347.12
2074.00    4.294   346.60
2084.00    4.263   346.06
2094.00    4.232   345.52
2104.00    4.201   344.97
2114.00    4.169   344.42
2124.00    4.138   343.85
2134.00    4.106   343.28
2144.00    4.074   342.69
2154.00    4.042   342.10
2164.00    4.009   341.50
2174.00    3.977   340.88
2184.00    3.944   340.26
2194.00    3.911   339.63
2204.00    3.878   338.99
2214.00    3.845   338.33
2224.00    3.812   337.67
2234.00    3.779   336.99
2244.00    3.745   336.30
2254.00    3.712   335.60
2264.00    3.678   334.88
2274.00    3.645   334.15
2284.00    3.611   333.41
2294.00    3.578   332.66
2304.00    3.544   331.89
2314.00    3.511   331.10
2324.00    3.477   330.30
2334.00    3.444   329.49
2344.00    3.410   328.66
2354.00    3.377   327.81
2364.00    3.344   326.94
2374.00    3.311   326.06
2384.00    3.278   325.16
2394.00    3.245   324.25
2404.00    3.213   323.31
2414.00    3.180   322.35
2424.00    3.148   321.38
2434.00    3.116   320.38
2444.00    3.085   319.37
2454.00    3.054   318.33
2464.00    3.023   317.27
2474.00    2.992   316.20
2484.00    2.962   315.09
2494.00    2.932   313.97
2504.00    2.903   312.82
2514.00    2.874   311.65
2524.00    2.846   310.46
2534.00    2.818   309.24
2544.00    2.790   308.00
2554.00    2.764   306.74
2564.00    2.738   305.45
2574.00    2.712   304.13
2584.00    2.688   302.79
2594.00    2.664   301.43
2604.00    2.640   300.04
2614.00    2.618   298.63
2624.00    2.596   297.19
2634.00    2.575   295.73
2644.00    2.555   294.25
2654.00    2.536   292.74
2664.00    2.518   291.21
2674.00    2.500   289.66
2684.00    2.484   288.09
2694.00    2.468   286.50
2704.00    2.454   284.89
2714.00    2.440   283.26
2724.00    2.428   281.61
2734.00    2.416   279.94
2744.00    2.406   278.26
2754.00    2.396   276.57
2764.00    2.388   274.87
2774.00    2.381   273.15
2784.00    2.374   271.42
2794.00    2.369   269.69
2804.00    2.364   267.94
2814.00    2.360   266.19
2824.00    2.358   264.44
2834.00    2.356   262.68
2844.00    2.355   260.92
2854.00    2.354   259.16
2864.00    2.355   257.40
2874.00    2.356   255.64
2884.00    2.357   253.88
2894.00    2.359   252.13
2904.00    2.362   250.37
2914.00    2.365   248.63
2924.00    2.368   246.88
2934.00    2.371   245.14
2944.00    2.374   243.41
2954.00    2.378   241.68
2964.00    2.381   239.96
2974.00    2.384   238.24
2984.00    2.387   236.52
2994.00    2.389   234.81
3004.00    2.391   233.10
3014.00    2.392   231.40
3024.00    2.392   229.69
3034.00    2.391   227.98
3044.00    2.389   226.27
3054.00    2.386   224.56
3064.00    2.381   222.84
3074.00    2.375   221.12
3084.00    2.367   219.38
3094.00    2.358   217.63
3104.00    2.346   215.87
3114.00    2.333   214.08
3124.00    2.317   212.28
3134.00    2.300   210.45
3144.00    2.280   208.59
3154.00    2.258   206.69
3164.00    2.233   204.75
3174.00    2.206   202.77
3184.00    2.177   200.74
3194.00    2.145   198.65
3204.00    2.112   196.50
3214.00    2.076   194.27
3224.00    2.039   191.97
3234.00    1.999   189.57
3244.00    1.959   187.08
3254.00    1.917   184.48
3264.00    1.875   181.76
3274.00    1.832   178.92
3284.00    1.790   175.95
3294.00    1.748   172.83
3304.00    1.707   169.55
3314.00    1.668   166.13
3324.00    1.631   162.54
3334.00    1.598   158.79
3344.00    1.567   154.89
3354.00    1.541   150.85
3364.00    1.520   146.68
3374.00    1.503   142.41
3384.00    1.493   138.06
3394.00    1.488   133.66
3404.00    1.489   129.25
3414.00    1.496   124.86
3424.00    1.509   120.54
3434.00    1.529   116.30
3444.00    1.553   112.19
3454.00    1.584   108.22
3464.00    1.619   104.41
3474.00    1.659   100.78
3484.00    1.703    97.32
3494.00    1.751    94.05
3504.00    1.802    90.96
3514.00    1.856    88.04
3524.00    1.913    85.29
3534.00    1.971    82.70
3544.00    2.031    80.26
3554.00    2.093    77.96
3564.00    2.156    75.80
3574.00    2.220    73.76
3584.00    2.285    71.84
3594.00    2.350    70.02
3604.00    2.415    68.30
3614.00    2.481    66.67
3624.00    2.547    65.13
3634.00    2.613    63.66
3644.00    2.678    62.26






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 16:57:36



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