Double Star Calculator - Orbit

Orbital Elements for STF945
WDS: STF945 WDS ID/Discoverer
P: 2679.330 Orbital period (years)
a: 2.307 Semi-major axis (arcseconds)
i: 72.1 Inclination (degrees)
Ω: 67.4 Longitude of ascending node (degrees)
T: 4486.860 Epoch of periastron passage (year)
e: 0.534 Eccentricity
ω: 186.7 Longitude of periastron (degrees)
Start-Year: 685.335 Year
End-Year: 3364.665 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF945
Position: 064021.28+405810.9 Epoch-2000 right ascension and declination
WDS-ID: 06404+4058 WDS designation
Discoverer Code: STF945 Discover designation and components
ADS number: 5296 Aitken Double Star catalog
HD number: 47412 HD catalog number
Hipparcos number: 31928 Hipparcos catalog number
V1: 7.21 Magnitude of the primary
V2: 8.33 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2002 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Nov2007d Reference

Double Star Orbit for STF945



WDS 6th Orbit including measures of STF945

-- 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 STF945
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.492   345.53
--------------------------
685.34    3.328    72.88
695.34    3.314    73.05
705.34    3.299    73.22
715.34    3.283    73.39
725.34    3.267    73.56
735.34    3.251    73.74
745.34    3.234    73.92
755.34    3.216    74.09
765.34    3.198    74.27
775.34    3.180    74.46
785.34    3.161    74.64
795.34    3.141    74.83
805.34    3.121    75.02
815.34    3.100    75.21
825.34    3.079    75.41
835.34    3.057    75.60
845.34    3.035    75.80
855.34    3.013    76.01
865.34    2.989    76.21
875.34    2.966    76.42
885.34    2.942    76.64
895.34    2.917    76.85
905.34    2.892    77.07
915.34    2.866    77.30
925.34    2.839    77.53
935.34    2.813    77.76
945.34    2.785    78.00
955.34    2.757    78.24
965.34    2.729    78.48
975.34    2.700    78.74
985.34    2.671    78.99
995.34    2.641    79.26
1005.34    2.610    79.53
1015.34    2.579    79.80
1025.34    2.548    80.09
1035.34    2.516    80.38
1045.34    2.483    80.67
1055.34    2.450    80.98
1065.34    2.416    81.29
1075.34    2.382    81.62
1085.34    2.347    81.95
1095.34    2.312    82.29
1105.34    2.276    82.64
1115.34    2.240    83.01
1125.34    2.203    83.38
1135.34    2.166    83.77
1145.34    2.128    84.18
1155.34    2.090    84.59
1165.34    2.051    85.03
1175.34    2.012    85.48
1185.34    1.972    85.95
1195.34    1.932    86.43
1205.34    1.891    86.94
1215.34    1.850    87.47
1225.34    1.808    88.03
1235.34    1.766    88.61
1245.34    1.723    89.22
1255.34    1.680    89.86
1265.34    1.637    90.54
1275.34    1.593    91.25
1285.34    1.549    92.00
1295.34    1.504    92.80
1305.34    1.459    93.65
1315.34    1.414    94.55
1325.34    1.368    95.51
1335.34    1.322    96.54
1345.34    1.276    97.64
1355.34    1.230    98.82
1365.34    1.184   100.10
1375.34    1.138   101.48
1385.34    1.092   102.97
1395.34    1.046   104.60
1405.34    1.000   106.38
1415.34    0.954   108.33
1425.34    0.910   110.47
1435.34    0.866   112.83
1445.34    0.823   115.44
1455.34    0.781   118.33
1465.34    0.741   121.55
1475.34    0.703   125.12
1485.34    0.667   129.09
1495.34    0.634   133.49
1505.34    0.605   138.34
1515.34    0.579   143.66
1525.34    0.559   149.40
1535.34    0.544   155.53
1545.34    0.535   161.93
1555.34    0.532   168.48
1565.34    0.535   175.02
1575.34    0.544   181.42
1585.34    0.559   187.53
1595.34    0.579   193.28
1605.34    0.604   198.60
1615.34    0.632   203.48
1625.34    0.663   207.92
1635.34    0.696   211.95
1645.34    0.731   215.61
1655.34    0.766   218.93
1665.34    0.802   221.95
1675.34    0.838   224.72
1685.34    0.873   227.26
1695.34    0.906   229.61
1705.34    0.938   231.79
1715.34    0.968   233.84
1725.34    0.995   235.77
1735.34    1.019   237.60
1745.34    1.039   239.35
1755.34    1.056   241.04
1765.34    1.068   242.69
1775.34    1.076   244.31
1785.34    1.079   245.90
1795.34    1.077   247.50
1805.34    1.071   249.11
1815.34    1.059   250.75
1825.34    1.042   252.43
1835.34    1.021   254.18
1845.34    0.995   256.00
1855.34    0.966   257.94
1865.34    0.933   260.00
1875.34    0.896   262.22
1885.34    0.857   264.64
1895.34    0.816   267.29
1905.34    0.774   270.23
1915.34    0.731   273.52
1925.34    0.688   277.21
1935.34    0.646   281.39
1945.34    0.606   286.14
1955.34    0.569   291.53
1965.34    0.536   297.64
1975.34    0.509   304.47
1985.34    0.488   311.97
1995.34    0.475   320.01
2005.34    0.471   328.34
2015.34    0.476   336.65
2025.34    0.490   344.64
2035.34    0.512   352.06
2045.34    0.541   358.77
2055.34    0.576     4.74
2065.34    0.616     9.99
2075.34    0.659    14.58
2085.34    0.705    18.58
2095.34    0.753    22.08
2105.34    0.803    25.15
2115.34    0.854    27.86
2125.34    0.906    30.26
2135.34    0.959    32.40
2145.34    1.012    34.31
2155.34    1.065    36.04
2165.34    1.118    37.60
2175.34    1.171    39.02
2185.34    1.223    40.32
2195.34    1.276    41.51
2205.34    1.328    42.61
2215.34    1.379    43.62
2225.34    1.430    44.56
2235.34    1.481    45.44
2245.34    1.531    46.26
2255.34    1.580    47.03
2265.34    1.629    47.75
2275.34    1.678    48.43
2285.34    1.725    49.07
2295.34    1.772    49.68
2305.34    1.819    50.26
2315.34    1.865    50.81
2325.34    1.910    51.33
2335.34    1.954    51.83
2345.34    1.998    52.30
2355.34    2.041    52.76
2365.34    2.084    53.19
2375.34    2.125    53.61
2385.34    2.166    54.02
2395.34    2.207    54.41
2405.34    2.247    54.78
2415.34    2.286    55.14
2425.34    2.324    55.49
2435.34    2.362    55.83
2445.34    2.399    56.16
2455.34    2.436    56.48
2465.34    2.472    56.79
2475.34    2.507    57.09
2485.34    2.541    57.38
2495.34    2.575    57.66
2505.34    2.608    57.94
2515.34    2.641    58.21
2525.34    2.673    58.47
2535.34    2.704    58.73
2545.34    2.735    58.98
2555.34    2.765    59.22
2565.34    2.794    59.47
2575.34    2.823    59.70
2585.34    2.851    59.93
2595.34    2.879    60.16
2605.34    2.906    60.38
2615.34    2.932    60.60
2625.34    2.958    60.81
2635.34    2.983    61.02
2645.34    3.007    61.23
2655.34    3.031    61.43
2665.34    3.054    61.64
2675.34    3.077    61.83
2685.34    3.099    62.03
2695.34    3.121    62.22
2705.34    3.142    62.41
2715.34    3.162    62.60
2725.34    3.182    62.78
2735.34    3.201    62.96
2745.34    3.220    63.14
2755.34    3.238    63.32
2765.34    3.255    63.50
2775.34    3.272    63.67
2785.34    3.289    63.85
2795.34    3.304    64.02
2805.34    3.320    64.19
2815.34    3.334    64.35
2825.34    3.348    64.52
2835.34    3.362    64.69
2845.34    3.375    64.85
2855.34    3.387    65.01
2865.34    3.399    65.17
2875.34    3.411    65.33
2885.34    3.422    65.49
2895.34    3.432    65.65
2905.34    3.442    65.81
2915.34    3.451    65.96
2925.34    3.460    66.12
2935.34    3.468    66.28
2945.34    3.475    66.43
2955.34    3.482    66.58
2965.34    3.489    66.74
2975.34    3.495    66.89
2985.34    3.500    67.04
2995.34    3.505    67.19
3005.34    3.510    67.34
3015.34    3.514    67.49
3025.34    3.517    67.64
3035.34    3.520    67.79
3045.34    3.522    67.94
3055.34    3.524    68.09
3065.34    3.526    68.24
3075.34    3.526    68.39
3085.34    3.527    68.54
3095.34    3.526    68.69
3105.34    3.526    68.84
3115.34    3.524    68.99
3125.34    3.523    69.14
3135.34    3.520    69.29
3145.34    3.518    69.44
3155.34    3.514    69.59
3165.34    3.511    69.74
3175.34    3.506    69.89
3185.34    3.501    70.04
3195.34    3.496    70.19
3205.34    3.490    70.35
3215.34    3.484    70.50
3225.34    3.477    70.65
3235.34    3.469    70.81
3245.34    3.462    70.96
3255.34    3.453    71.12
3265.34    3.444    71.27
3275.34    3.435    71.43
3285.34    3.425    71.59
3295.34    3.414    71.75
3305.34    3.404    71.91
3315.34    3.392    72.07
3325.34    3.380    72.23
3335.34    3.368    72.39
3345.34    3.355    72.56
3355.34    3.341    72.72






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 15:48:54



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