Double Star Calculator - Orbit

Orbital Elements for STF2603
WDS: STF2603 WDS ID/Discoverer
P: 2753.326 Orbital period (years)
a: 8.01058 Semi-major axis (arcseconds)
i: 70.932 Inclination (degrees)
Ω: 128.309 Longitude of ascending node (degrees)
T: 1598.565 Epoch of periastron passage (year)
e: 0.83937 Eccentricity
ω: 111.258 Longitude of periastron (degrees)
Start-Year: 648.3371500000001 Year
End-Year: 3401.6628499999997 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2603
Position: 194810.35+701604.5 Epoch-2000 right ascension and declination
WDS-ID: 19482+7016 WDS designation
Discoverer Code: STF2603 Discover designation and components
ADS number: 13007 Aitken Double Star catalog
HD number: 188119 HD catalog number
Hipparcos number: 97433 Hipparcos catalog number
V1: 4.01 Magnitude of the primary
V2: 6.87 Magnitude of the secondary
Equinox: Equinox
Date: 2012 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: Izm2019 Reference

Double Star Orbit for STF2603



WDS 6th Orbit including measures of STF2603

-- 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 STF2603
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    3.213    22.54
--------------------------
648.34    8.015    99.42
658.34    8.026    99.65
668.34    8.038    99.88
678.34    8.048   100.11
688.34    8.058   100.34
698.34    8.067   100.57
708.34    8.075   100.80
718.34    8.082   101.03
728.34    8.089   101.25
738.34    8.095   101.48
748.34    8.100   101.71
758.34    8.104   101.94
768.34    8.108   102.16
778.34    8.110   102.39
788.34    8.112   102.62
798.34    8.113   102.84
808.34    8.113   103.07
818.34    8.112   103.29
828.34    8.111   103.52
838.34    8.108   103.75
848.34    8.105   103.97
858.34    8.100   104.20
868.34    8.095   104.43
878.34    8.088   104.66
888.34    8.081   104.88
898.34    8.072   105.11
908.34    8.062   105.34
918.34    8.052   105.57
928.34    8.040   105.80
938.34    8.027   106.03
948.34    8.013   106.26
958.34    7.998   106.50
968.34    7.982   106.73
978.34    7.964   106.96
988.34    7.945   107.20
998.34    7.925   107.44
1008.34    7.904   107.67
1018.34    7.881   107.91
1028.34    7.857   108.15
1038.34    7.832   108.40
1048.34    7.805   108.64
1058.34    7.776   108.89
1068.34    7.746   109.13
1078.34    7.715   109.38
1088.34    7.682   109.63
1098.34    7.647   109.89
1108.34    7.611   110.14
1118.34    7.572   110.40
1128.34    7.533   110.66
1138.34    7.491   110.93
1148.34    7.447   111.19
1158.34    7.401   111.46
1168.34    7.354   111.74
1178.34    7.304   112.01
1188.34    7.252   112.30
1198.34    7.198   112.58
1208.34    7.141   112.87
1218.34    7.082   113.17
1228.34    7.021   113.47
1238.34    6.957   113.77
1248.34    6.890   114.08
1258.34    6.820   114.40
1268.34    6.747   114.72
1278.34    6.672   115.05
1288.34    6.593   115.39
1298.34    6.510   115.74
1308.34    6.424   116.10
1318.34    6.334   116.46
1328.34    6.241   116.84
1338.34    6.143   117.23
1348.34    6.040   117.63
1358.34    5.933   118.04
1368.34    5.821   118.48
1378.34    5.703   118.92
1388.34    5.580   119.39
1398.34    5.451   119.88
1408.34    5.315   120.40
1418.34    5.172   120.94
1428.34    5.021   121.51
1438.34    4.861   122.12
1448.34    4.693   122.77
1458.34    4.514   123.48
1468.34    4.324   124.24
1478.34    4.121   125.08
1488.34    3.904   126.00
1498.34    3.670   127.04
1508.34    3.419   128.23
1518.34    3.146   129.61
1528.34    2.848   131.27
1538.34    2.522   133.34
1548.34    2.161   136.07
1558.34    1.760   139.97
1568.34    1.318   146.37
1578.34    0.846   159.71
1588.34    0.462   200.62
1598.34    0.600   267.36
1608.34    1.036   291.55
1618.34    1.438   301.45
1628.34    1.756   307.30
1638.34    2.001   311.51
1648.34    2.189   314.90
1658.34    2.336   317.81
1668.34    2.452   320.40
1678.34    2.545   322.79
1688.34    2.619   325.02
1698.34    2.679   327.14
1708.34    2.729   329.18
1718.34    2.769   331.15
1728.34    2.803   333.07
1738.34    2.830   334.95
1748.34    2.853   336.79
1758.34    2.872   338.61
1768.34    2.889   340.41
1778.34    2.902   342.18
1788.34    2.914   343.94
1798.34    2.925   345.69
1808.34    2.934   347.43
1818.34    2.943   349.15
1828.34    2.951   350.87
1838.34    2.959   352.58
1848.34    2.966   354.27
1858.34    2.974   355.96
1868.34    2.982   357.64
1878.34    2.991   359.31
1888.34    3.000     0.97
1898.34    3.010     2.62
1908.34    3.020     4.26
1918.34    3.031     5.89
1928.34    3.043     7.51
1938.34    3.056     9.11
1948.34    3.070    10.70
1958.34    3.085    12.27
1968.34    3.100    13.83
1978.34    3.117    15.37
1988.34    3.135    16.89
1998.34    3.154    18.40
2008.34    3.174    19.89
2018.34    3.195    21.36
2028.34    3.217    22.81
2038.34    3.240    24.24
2048.34    3.264    25.64
2058.34    3.289    27.03
2068.34    3.316    28.40
2078.34    3.343    29.74
2088.34    3.371    31.07
2098.34    3.400    32.37
2108.34    3.429    33.64
2118.34    3.460    34.90
2128.34    3.492    36.13
2138.34    3.524    37.34
2148.34    3.557    38.53
2158.34    3.591    39.70
2168.34    3.626    40.84
2178.34    3.661    41.96
2188.34    3.697    43.07
2198.34    3.734    44.14
2208.34    3.772    45.20
2218.34    3.809    46.24
2228.34    3.848    47.26
2238.34    3.887    48.25
2248.34    3.927    49.23
2258.34    3.967    50.18
2268.34    4.007    51.12
2278.34    4.048    52.04
2288.34    4.089    52.94
2298.34    4.131    53.82
2308.34    4.173    54.69
2318.34    4.215    55.53
2328.34    4.258    56.36
2338.34    4.301    57.18
2348.34    4.344    57.97
2358.34    4.388    58.76
2368.34    4.432    59.52
2378.34    4.475    60.27
2388.34    4.520    61.01
2398.34    4.564    61.73
2408.34    4.608    62.44
2418.34    4.653    63.14
2428.34    4.697    63.82
2438.34    4.742    64.49
2448.34    4.787    65.14
2458.34    4.832    65.79
2468.34    4.877    66.42
2478.34    4.922    67.04
2488.34    4.967    67.65
2498.34    5.012    68.25
2508.34    5.057    68.84
2518.34    5.102    69.41
2528.34    5.147    69.98
2538.34    5.192    70.54
2548.34    5.237    71.09
2558.34    5.282    71.62
2568.34    5.326    72.15
2578.34    5.371    72.68
2588.34    5.415    73.19
2598.34    5.460    73.69
2608.34    5.504    74.19
2618.34    5.548    74.67
2628.34    5.592    75.16
2638.34    5.636    75.63
2648.34    5.680    76.09
2658.34    5.724    76.55
2668.34    5.767    77.00
2678.34    5.810    77.45
2688.34    5.853    77.89
2698.34    5.896    78.32
2708.34    5.939    78.74
2718.34    5.981    79.16
2728.34    6.023    79.58
2738.34    6.065    79.98
2748.34    6.107    80.39
2758.34    6.149    80.78
2768.34    6.190    81.17
2778.34    6.231    81.56
2788.34    6.272    81.94
2798.34    6.312    82.32
2808.34    6.352    82.69
2818.34    6.392    83.06
2828.34    6.432    83.42
2838.34    6.471    83.78
2848.34    6.510    84.13
2858.34    6.549    84.48
2868.34    6.587    84.83
2878.34    6.625    85.17
2888.34    6.663    85.50
2898.34    6.700    85.84
2908.34    6.737    86.17
2918.34    6.774    86.49
2928.34    6.810    86.82
2938.34    6.846    87.14
2948.34    6.882    87.45
2958.34    6.917    87.77
2968.34    6.952    88.08
2978.34    6.987    88.38
2988.34    7.021    88.69
2998.34    7.055    88.99
3008.34    7.088    89.29
3018.34    7.121    89.58
3028.34    7.153    89.87
3038.34    7.185    90.16
3048.34    7.217    90.45
3058.34    7.248    90.73
3068.34    7.279    91.02
3078.34    7.310    91.30
3088.34    7.340    91.57
3098.34    7.369    91.85
3108.34    7.398    92.12
3118.34    7.427    92.39
3128.34    7.455    92.66
3138.34    7.482    92.93
3148.34    7.509    93.20
3158.34    7.536    93.46
3168.34    7.562    93.72
3178.34    7.588    93.98
3188.34    7.613    94.24
3198.34    7.638    94.49
3208.34    7.662    94.75
3218.34    7.685    95.00
3228.34    7.708    95.25
3238.34    7.731    95.50
3248.34    7.753    95.75
3258.34    7.774    96.00
3268.34    7.795    96.25
3278.34    7.815    96.49
3288.34    7.835    96.73
3298.34    7.854    96.98
3308.34    7.872    97.22
3318.34    7.890    97.46
3328.34    7.908    97.70
3338.34    7.924    97.93
3348.34    7.940    98.17
3358.34    7.956    98.41
3368.34    7.970    98.64
3378.34    7.984    98.87
3388.34    7.998    99.11
3398.34    8.011    99.34






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 18:08:53



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