Double Star Calculator - Orbit

Orbital Elements for STF1608AB
WDS: STF1608AB WDS ID/Discoverer
P: 2236.030 Orbital period (years)
a: 19.66795 Semi-major axis (arcseconds)
i: 92.932 Inclination (degrees)
Ω: 36.653 Longitude of ascending node (degrees)
T: 2434.574 Epoch of periastron passage (year)
e: 0.6409 Eccentricity
ω: 266.009 Longitude of periastron (degrees)
Start-Year: 906.98495 Year
End-Year: 3143.01505 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1608AB
Position: 121127.76+532517.5 Epoch-2000 right ascension and declination
WDS-ID: 12115+5325 WDS designation
Discoverer Code: STF1608AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.11 Magnitude of the primary
V2: 8.27 Magnitude of the secondary
Equinox: Equinox
Date: 2014 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: Izm2019 Reference

Double Star Orbit for STF1608AB



WDS 6th Orbit including measures of STF1608AB

-- 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 STF1608AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   13.626   220.43
--------------------------
906.98   11.973    30.14
916.98   11.778    29.97
926.98   11.580    29.79
936.98   11.379    29.60
946.98   11.176    29.41
956.98   10.970    29.21
966.98   10.762    29.00
976.98   10.552    28.79
986.98   10.339    28.56
996.98   10.125    28.33
1006.98    9.908    28.08
1016.98    9.690    27.83
1026.98    9.470    27.56
1036.98    9.248    27.28
1046.98    9.024    26.99
1056.98    8.799    26.68
1066.98    8.572    26.36
1076.98    8.344    26.02
1086.98    8.115    25.66
1096.98    7.884    25.27
1106.98    7.652    24.87
1116.98    7.419    24.44
1126.98    7.185    23.98
1136.98    6.950    23.49
1146.98    6.715    22.97
1156.98    6.478    22.40
1166.98    6.242    21.80
1176.98    6.004    21.15
1186.98    5.767    20.44
1196.98    5.529    19.67
1206.98    5.292    18.84
1216.98    5.054    17.92
1226.98    4.818    16.92
1236.98    4.582    15.81
1246.98    4.347    14.58
1256.98    4.113    13.22
1266.98    3.882    11.68
1276.98    3.653     9.96
1286.98    3.426     8.00
1296.98    3.204     5.78
1306.98    2.987     3.22
1316.98    2.776     0.27
1326.98    2.574   356.85
1336.98    2.381   352.85
1346.98    2.202   348.18
1356.98    2.039   342.73
1366.98    1.898   336.40
1376.98    1.783   329.15
1386.98    1.699   321.05
1396.98    1.653   312.31
1406.98    1.646   303.28
1416.98    1.679   294.40
1426.98    1.751   286.06
1436.98    1.856   278.51
1446.98    1.989   271.87
1456.98    2.145   266.13
1466.98    2.319   261.21
1476.98    2.508   257.00
1486.98    2.707   253.39
1496.98    2.915   250.29
1506.98    3.130   247.61
1516.98    3.351   245.28
1526.98    3.576   243.24
1536.98    3.804   241.44
1546.98    4.034   239.85
1556.98    4.267   238.43
1566.98    4.501   237.15
1576.98    4.736   236.01
1586.98    4.972   234.97
1596.98    5.208   234.02
1606.98    5.445   233.16
1616.98    5.681   232.37
1626.98    5.918   231.64
1636.98    6.154   230.97
1646.98    6.389   230.35
1656.98    6.624   229.77
1666.98    6.858   229.23
1676.98    7.091   228.73
1686.98    7.323   228.26
1696.98    7.554   227.82
1706.98    7.783   227.40
1716.98    8.011   227.01
1726.98    8.237   226.64
1736.98    8.462   226.29
1746.98    8.685   225.96
1756.98    8.906   225.64
1766.98    9.125   225.34
1776.98    9.341   225.05
1786.98    9.556   224.78
1796.98    9.768   224.52
1806.98    9.978   224.27
1816.98   10.185   224.03
1826.98   10.389   223.79
1836.98   10.590   223.57
1846.98   10.788   223.36
1856.98   10.983   223.15
1866.98   11.175   222.95
1876.98   11.363   222.76
1886.98   11.547   222.57
1896.98   11.728   222.39
1906.98   11.904   222.22
1916.98   12.077   222.05
1926.98   12.245   221.88
1936.98   12.408   221.72
1946.98   12.567   221.56
1956.98   12.720   221.41
1966.98   12.868   221.26
1976.98   13.011   221.12
1986.98   13.148   220.97
1996.98   13.278   220.83
2006.98   13.403   220.70
2016.98   13.520   220.56
2026.98   13.631   220.43
2036.98   13.734   220.30
2046.98   13.829   220.17
2056.98   13.916   220.04
2066.98   13.995   219.92
2076.98   14.064   219.79
2086.98   14.124   219.67
2096.98   14.174   219.55
2106.98   14.213   219.43
2116.98   14.240   219.30
2126.98   14.255   219.18
2136.98   14.258   219.06
2146.98   14.247   218.94
2156.98   14.222   218.82
2166.98   14.181   218.70
2176.98   14.124   218.58
2186.98   14.049   218.46
2196.98   13.956   218.33
2206.98   13.842   218.21
2216.98   13.707   218.08
2226.98   13.549   217.94
2236.98   13.365   217.81
2246.98   13.155   217.67
2256.98   12.915   217.53
2266.98   12.644   217.38
2276.98   12.338   217.22
2286.98   11.995   217.06
2296.98   11.612   216.88
2306.98   11.184   216.69
2316.98   10.709   216.49
2326.98   10.181   216.26
2336.98    9.597   216.01
2346.98    8.953   215.73
2356.98    8.244   215.40
2366.98    7.467   215.00
2376.98    6.619   214.51
2386.98    5.699   213.86
2396.98    4.711   212.95
2406.98    3.659   211.54
2416.98    2.557   208.93
2426.98    1.427   202.23
2436.98    0.416   156.50
2446.98    1.036    57.04
2456.98    2.163    46.09
2466.98    3.281    42.65
2476.98    4.357    40.94
2486.98    5.379    39.90
2496.98    6.340    39.18
2506.98    7.237    38.65
2516.98    8.069    38.23
2526.98    8.840    37.89
2536.98    9.550    37.60
2546.98   10.204    37.35
2556.98   10.805    37.13
2566.98   11.356    36.93
2576.98   11.862    36.75
2586.98   12.325    36.58
2596.98   12.749    36.43
2606.98   13.136    36.28
2616.98   13.490    36.14
2626.98   13.812    36.01
2636.98   14.104    35.89
2646.98   14.369    35.77
2656.98   14.609    35.65
2666.98   14.825    35.54
2676.98   15.018    35.43
2686.98   15.191    35.32
2696.98   15.344    35.21
2706.98   15.479    35.11
2716.98   15.596    35.01
2726.98   15.697    34.91
2736.98   15.783    34.81
2746.98   15.854    34.71
2756.98   15.911    34.62
2766.98   15.955    34.52
2776.98   15.986    34.42
2786.98   16.006    34.33
2796.98   16.015    34.23
2806.98   16.012    34.14
2816.98   16.000    34.04
2826.98   15.977    33.95
2836.98   15.946    33.85
2846.98   15.905    33.76
2856.98   15.856    33.66
2866.98   15.799    33.56
2876.98   15.734    33.46
2886.98   15.662    33.36
2896.98   15.582    33.26
2906.98   15.495    33.16
2916.98   15.402    33.06
2926.98   15.303    32.96
2936.98   15.197    32.85
2946.98   15.085    32.74
2956.98   14.968    32.64
2966.98   14.845    32.53
2976.98   14.718    32.41
2986.98   14.585    32.30
2996.98   14.447    32.18
3006.98   14.304    32.06
3016.98   14.157    31.94
3026.98   14.005    31.82
3036.98   13.850    31.69
3046.98   13.690    31.57
3056.98   13.526    31.43
3066.98   13.358    31.30
3076.98   13.187    31.16
3086.98   13.012    31.02
3096.98   12.834    30.87
3106.98   12.653    30.72
3116.98   12.468    30.57
3126.98   12.280    30.41
3136.98   12.089    30.24






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 16:44:09



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