Double Star Calculator - Orbit

Orbital Elements for STF2375AB
WDS: STF2375AB WDS ID/Discoverer
P: 5000.000 Orbital period (years)
a: 3.64 Semi-major axis (arcseconds)
i: 64.5 Inclination (degrees)
Ω: 167.5 Longitude of ascending node (degrees)
T: 557.000 Epoch of periastron passage (year)
e: 0.5 Eccentricity
ω: 143.4 Longitude of periastron (degrees)
Start-Year: -475.0 Year
End-Year: 4525.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2375AB
Position: 184528.36+053000.4 Epoch-2000 right ascension and declination
WDS-ID: 18455+0530 WDS designation
Discoverer Code: STF2375AB Discover designation and components
ADS number: 11640 Aitken Double Star catalog
HD number: 173495 HD catalog number
Hipparcos number: 92027 Hipparcos catalog number
V1: 6.34 Magnitude of the primary
V2: 6.73 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Tok2020k Reference

Double Star Orbit for STF2375AB



WDS 6th Orbit including measures of STF2375AB

-- 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 STF2375AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.616   120.88
--------------------------
-475.00    3.940   173.30
-465.00    3.913   173.53
-455.00    3.886   173.77
-445.00    3.859   174.01
-435.00    3.831   174.25
-425.00    3.803   174.49
-415.00    3.774   174.74
-405.00    3.745   174.99
-395.00    3.716   175.25
-385.00    3.686   175.50
-375.00    3.656   175.77
-365.00    3.625   176.04
-355.00    3.594   176.31
-345.00    3.562   176.59
-335.00    3.530   176.87
-325.00    3.498   177.16
-315.00    3.465   177.45
-305.00    3.431   177.75
-295.00    3.398   178.06
-285.00    3.364   178.37
-275.00    3.329   178.69
-265.00    3.294   179.01
-255.00    3.258   179.34
-245.00    3.222   179.68
-235.00    3.186   180.03
-225.00    3.149   180.38
-215.00    3.112   180.74
-205.00    3.074   181.12
-195.00    3.036   181.50
-185.00    2.997   181.89
-175.00    2.958   182.29
-165.00    2.919   182.70
-155.00    2.879   183.12
-145.00    2.838   183.56
-135.00    2.798   184.01
-125.00    2.756   184.47
-115.00    2.714   184.94
-105.00    2.672   185.43
-95.00    2.630   185.94
-85.00    2.587   186.46
-75.00    2.543   187.00
-65.00    2.499   187.56
-55.00    2.455   188.14
-45.00    2.410   188.74
-35.00    2.365   189.37
-25.00    2.320   190.02
-15.00    2.274   190.69
-5.00    2.228   191.39
5.00    2.182   192.12
15.00    2.135   192.89
25.00    2.088   193.69
35.00    2.040   194.52
45.00    1.993   195.39
55.00    1.945   196.31
65.00    1.897   197.28
75.00    1.849   198.29
85.00    1.801   199.36
95.00    1.752   200.49
105.00    1.704   201.68
115.00    1.656   202.94
125.00    1.608   204.27
135.00    1.560   205.69
145.00    1.513   207.20
155.00    1.466   208.80
165.00    1.419   210.51
175.00    1.373   212.34
185.00    1.328   214.29
195.00    1.284   216.38
205.00    1.240   218.61
215.00    1.199   221.00
225.00    1.158   223.57
235.00    1.120   226.31
245.00    1.083   229.24
255.00    1.049   232.37
265.00    1.018   235.70
275.00    0.989   239.24
285.00    0.964   242.97
295.00    0.942   246.89
305.00    0.925   250.98
315.00    0.911   255.20
325.00    0.902   259.54
335.00    0.897   263.94
345.00    0.897   268.37
355.00    0.901   272.77
365.00    0.910   277.11
375.00    0.923   281.35
385.00    0.940   285.46
395.00    0.961   289.40
405.00    0.985   293.16
415.00    1.012   296.73
425.00    1.042   300.10
435.00    1.074   303.28
445.00    1.108   306.27
455.00    1.144   309.08
465.00    1.180   311.72
475.00    1.218   314.19
485.00    1.257   316.51
495.00    1.296   318.70
505.00    1.335   320.75
515.00    1.374   322.69
525.00    1.413   324.52
535.00    1.451   326.26
545.00    1.489   327.90
555.00    1.527   329.47
565.00    1.563   330.96
575.00    1.598   332.38
585.00    1.633   333.74
595.00    1.666   335.05
605.00    1.698   336.31
615.00    1.729   337.52
625.00    1.758   338.69
635.00    1.786   339.82
645.00    1.812   340.92
655.00    1.837   341.99
665.00    1.860   343.03
675.00    1.882   344.05
685.00    1.903   345.04
695.00    1.922   346.01
705.00    1.939   346.97
715.00    1.955   347.90
725.00    1.969   348.83
735.00    1.982   349.74
745.00    1.993   350.64
755.00    2.004   351.53
765.00    2.012   352.41
775.00    2.020   353.29
785.00    2.026   354.16
795.00    2.031   355.02
805.00    2.035   355.88
815.00    2.037   356.74
825.00    2.039   357.60
835.00    2.039   358.45
845.00    2.038   359.31
855.00    2.037     0.16
865.00    2.034     1.02
875.00    2.031     1.88
885.00    2.027     2.75
895.00    2.022     3.62
905.00    2.016     4.49
915.00    2.009     5.37
925.00    2.002     6.25
935.00    1.995     7.14
945.00    1.986     8.04
955.00    1.978     8.94
965.00    1.968     9.86
975.00    1.959    10.78
985.00    1.949    11.71
995.00    1.938    12.65
1005.00    1.928    13.60
1015.00    1.917    14.57
1025.00    1.905    15.54
1035.00    1.894    16.53
1045.00    1.882    17.52
1055.00    1.871    18.53
1065.00    1.859    19.56
1075.00    1.847    20.59
1085.00    1.835    21.64
1095.00    1.823    22.71
1105.00    1.811    23.78
1115.00    1.799    24.88
1125.00    1.788    25.98
1135.00    1.776    27.10
1145.00    1.765    28.24
1155.00    1.754    29.39
1165.00    1.743    30.55
1175.00    1.732    31.73
1185.00    1.722    32.92
1195.00    1.712    34.13
1205.00    1.702    35.35
1215.00    1.692    36.58
1225.00    1.683    37.83
1235.00    1.675    39.09
1245.00    1.667    40.37
1255.00    1.659    41.65
1265.00    1.652    42.95
1275.00    1.645    44.26
1285.00    1.639    45.58
1295.00    1.633    46.91
1305.00    1.628    48.25
1315.00    1.624    49.59
1325.00    1.620    50.94
1335.00    1.617    52.30
1345.00    1.614    53.67
1355.00    1.612    55.03
1365.00    1.610    56.40
1375.00    1.610    57.78
1385.00    1.609    59.15
1395.00    1.610    60.52
1405.00    1.611    61.89
1415.00    1.613    63.26
1425.00    1.616    64.63
1435.00    1.619    65.99
1445.00    1.623    67.34
1455.00    1.627    68.69
1465.00    1.632    70.03
1475.00    1.638    71.36
1485.00    1.645    72.68
1495.00    1.652    73.99
1505.00    1.660    75.28
1515.00    1.668    76.57
1525.00    1.677    77.84
1535.00    1.687    79.10
1545.00    1.697    80.34
1555.00    1.707    81.57
1565.00    1.719    82.78
1575.00    1.731    83.98
1585.00    1.743    85.16
1595.00    1.756    86.32
1605.00    1.769    87.46
1615.00    1.783    88.59
1625.00    1.798    89.70
1635.00    1.813    90.79
1645.00    1.828    91.86
1655.00    1.844    92.92
1665.00    1.860    93.96
1675.00    1.877    94.98
1685.00    1.893    95.98
1695.00    1.911    96.96
1705.00    1.929    97.93
1715.00    1.947    98.87
1725.00    1.965    99.80
1735.00    1.984   100.71
1745.00    2.003   101.61
1755.00    2.022   102.49
1765.00    2.042   103.35
1775.00    2.061   104.20
1785.00    2.082   105.02
1795.00    2.102   105.84
1805.00    2.122   106.63
1815.00    2.143   107.42
1825.00    2.164   108.18
1835.00    2.185   108.94
1845.00    2.207   109.67
1855.00    2.228   110.40
1865.00    2.250   111.11
1875.00    2.272   111.80
1885.00    2.294   112.48
1895.00    2.316   113.15
1905.00    2.338   113.81
1915.00    2.361   114.45
1925.00    2.383   115.09
1935.00    2.406   115.71
1945.00    2.428   116.32
1955.00    2.451   116.91
1965.00    2.474   117.50
1975.00    2.497   118.08
1985.00    2.520   118.64
1995.00    2.543   119.20
2005.00    2.566   119.74
2015.00    2.589   120.28
2025.00    2.612   120.80
2035.00    2.636   121.32
2045.00    2.659   121.83
2055.00    2.682   122.32
2065.00    2.705   122.81
2075.00    2.729   123.30
2085.00    2.752   123.77
2095.00    2.775   124.24
2105.00    2.798   124.69
2115.00    2.822   125.14
2125.00    2.845   125.59
2135.00    2.868   126.02
2145.00    2.891   126.45
2155.00    2.915   126.87
2165.00    2.938   127.29
2175.00    2.961   127.70
2185.00    2.984   128.10
2195.00    3.007   128.50
2205.00    3.030   128.89
2215.00    3.053   129.27
2225.00    3.076   129.65
2235.00    3.099   130.02
2245.00    3.122   130.39
2255.00    3.144   130.75
2265.00    3.167   131.11
2275.00    3.190   131.46
2285.00    3.212   131.81
2295.00    3.235   132.15
2305.00    3.257   132.49
2315.00    3.279   132.82
2325.00    3.302   133.15
2335.00    3.324   133.48
2345.00    3.346   133.80
2355.00    3.368   134.11
2365.00    3.390   134.42
2375.00    3.412   134.73
2385.00    3.433   135.03
2395.00    3.455   135.33
2405.00    3.477   135.63
2415.00    3.498   135.92
2425.00    3.519   136.21
2435.00    3.541   136.50
2445.00    3.562   136.78
2455.00    3.583   137.06
2465.00    3.604   137.33
2475.00    3.624   137.61
2485.00    3.645   137.87
2495.00    3.666   138.14
2505.00    3.686   138.40
2515.00    3.707   138.66
2525.00    3.727   138.92
2535.00    3.747   139.18
2545.00    3.767   139.43
2555.00    3.787   139.68
2565.00    3.807   139.92
2575.00    3.826   140.17
2585.00    3.846   140.41
2595.00    3.865   140.65
2605.00    3.884   140.89
2615.00    3.904   141.12
2625.00    3.923   141.35
2635.00    3.941   141.58
2645.00    3.960   141.81
2655.00    3.979   142.04
2665.00    3.997   142.26
2675.00    4.016   142.48
2685.00    4.034   142.70
2695.00    4.052   142.92
2705.00    4.070   143.14
2715.00    4.087   143.35
2725.00    4.105   143.56
2735.00    4.122   143.77
2745.00    4.140   143.98
2755.00    4.157   144.19
2765.00    4.174   144.39
2775.00    4.191   144.59
2785.00    4.208   144.80
2795.00    4.224   145.00
2805.00    4.241   145.19
2815.00    4.257   145.39
2825.00    4.273   145.59
2835.00    4.289   145.78
2845.00    4.305   145.97
2855.00    4.321   146.17
2865.00    4.336   146.36
2875.00    4.351   146.54
2885.00    4.367   146.73
2895.00    4.382   146.92
2905.00    4.396   147.10
2915.00    4.411   147.28
2925.00    4.426   147.47
2935.00    4.440   147.65
2945.00    4.454   147.83
2955.00    4.468   148.01
2965.00    4.482   148.18
2975.00    4.496   148.36
2985.00    4.510   148.54
2995.00    4.523   148.71
3005.00    4.536   148.88
3015.00    4.549   149.06
3025.00    4.562   149.23
3035.00    4.575   149.40
3045.00    4.587   149.57
3055.00    4.600   149.74
3065.00    4.612   149.90
3075.00    4.624   150.07
3085.00    4.635   150.24
3095.00    4.647   150.40
3105.00    4.659   150.57
3115.00    4.670   150.73
3125.00    4.681   150.89
3135.00    4.692   151.05
3145.00    4.703   151.22
3155.00    4.713   151.38
3165.00    4.723   151.54
3175.00    4.734   151.69
3185.00    4.744   151.85
3195.00    4.753   152.01
3205.00    4.763   152.17
3215.00    4.772   152.32
3225.00    4.782   152.48
3235.00    4.791   152.64
3245.00    4.800   152.79
3255.00    4.808   152.94
3265.00    4.817   153.10
3275.00    4.825   153.25
3285.00    4.833   153.40
3295.00    4.841   153.56
3305.00    4.849   153.71
3315.00    4.856   153.86
3325.00    4.863   154.01
3335.00    4.871   154.16
3345.00    4.877   154.31
3355.00    4.884   154.46
3365.00    4.891   154.61
3375.00    4.897   154.75
3385.00    4.903   154.90
3395.00    4.909   155.05
3405.00    4.914   155.20
3415.00    4.920   155.35
3425.00    4.925   155.49
3435.00    4.930   155.64
3445.00    4.935   155.78
3455.00    4.940   155.93
3465.00    4.944   156.08
3475.00    4.948   156.22
3485.00    4.952   156.37
3495.00    4.956   156.51
3505.00    4.959   156.66
3515.00    4.963   156.80
3525.00    4.966   156.95
3535.00    4.969   157.09
3545.00    4.971   157.23
3555.00    4.974   157.38
3565.00    4.976   157.52
3575.00    4.978   157.66
3585.00    4.980   157.81
3595.00    4.981   157.95
3605.00    4.983   158.09
3615.00    4.984   158.24
3625.00    4.985   158.38
3635.00    4.985   158.52
3645.00    4.986   158.67
3655.00    4.986   158.81
3665.00    4.986   158.95
3675.00    4.985   159.10
3685.00    4.985   159.24
3695.00    4.984   159.38
3705.00    4.983   159.53
3715.00    4.982   159.67
3725.00    4.980   159.81
3735.00    4.979   159.96
3745.00    4.977   160.10
3755.00    4.974   160.24
3765.00    4.972   160.39
3775.00    4.969   160.53
3785.00    4.966   160.68
3795.00    4.963   160.82
3805.00    4.959   160.96
3815.00    4.956   161.11
3825.00    4.952   161.25
3835.00    4.948   161.40
3845.00    4.943   161.54
3855.00    4.938   161.69
3865.00    4.933   161.84
3875.00    4.928   161.98
3885.00    4.922   162.13
3895.00    4.917   162.28
3905.00    4.910   162.42
3915.00    4.904   162.57
3925.00    4.898   162.72
3935.00    4.891   162.87
3945.00    4.883   163.02
3955.00    4.876   163.17
3965.00    4.868   163.32
3975.00    4.860   163.47
3985.00    4.852   163.62
3995.00    4.844   163.77
4005.00    4.835   163.92
4015.00    4.826   164.07
4025.00    4.816   164.23
4035.00    4.807   164.38
4045.00    4.797   164.53
4055.00    4.786   164.69
4065.00    4.776   164.84
4075.00    4.765   165.00
4085.00    4.754   165.16
4095.00    4.742   165.31
4105.00    4.731   165.47
4115.00    4.719   165.63
4125.00    4.706   165.79
4135.00    4.694   165.95
4145.00    4.681   166.12
4155.00    4.667   166.28
4165.00    4.654   166.44
4175.00    4.640   166.61
4185.00    4.626   166.77
4195.00    4.611   166.94
4205.00    4.596   167.11
4215.00    4.581   167.28
4225.00    4.566   167.45
4235.00    4.550   167.62
4245.00    4.534   167.79
4255.00    4.517   167.96
4265.00    4.500   168.14
4275.00    4.483   168.31
4285.00    4.466   168.49
4295.00    4.448   168.67
4305.00    4.430   168.85
4315.00    4.411   169.03
4325.00    4.393   169.22
4335.00    4.373   169.40
4345.00    4.354   169.59
4355.00    4.334   169.78
4365.00    4.314   169.97
4375.00    4.293   170.16
4385.00    4.272   170.35
4395.00    4.251   170.55
4405.00    4.229   170.75
4415.00    4.207   170.95
4425.00    4.185   171.15
4435.00    4.162   171.35
4445.00    4.139   171.56
4455.00    4.115   171.77
4465.00    4.091   171.98
4475.00    4.067   172.19
4485.00    4.043   172.41
4495.00    4.017   172.63
4505.00    3.992   172.85
4515.00    3.966   173.08






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 17:55:21



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