Double Star Calculator - Orbit

Orbital Elements for STF1658AB
WDS: STF1658AB WDS ID/Discoverer
P: 1797.231 Orbital period (years)
a: 5.66667 Semi-major axis (arcseconds)
i: 67.045 Inclination (degrees)
Ω: 125.517 Longitude of ascending node (degrees)
T: 1731.624 Epoch of periastron passage (year)
e: 0.85959 Eccentricity
ω: 107.803 Longitude of periastron (degrees)
Start-Year: 1126.3845999999999 Year
End-Year: 2923.6154 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1658AB
Position: 123507.88+072634.6 Epoch-2000 right ascension and declination
WDS-ID: 12351+0727 WDS designation
Discoverer Code: STF1658AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 109499 HD catalog number
Hipparcos number: 61419 Hipparcos catalog number
V1: 8.08 Magnitude of the primary
V2: 10.52 Magnitude of the secondary
Equinox: Equinox
Date: 2015 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 STF1658AB



WDS 6th Orbit including measures of STF1658AB

-- 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 STF1658AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    2.813    21.75
--------------------------
1126.38    5.584    88.00
1136.38    5.588    88.41
1146.38    5.592    88.82
1156.38    5.594    89.23
1166.38    5.595    89.64
1176.38    5.595    90.05
1186.38    5.594    90.46
1196.38    5.592    90.87
1206.38    5.589    91.28
1216.38    5.584    91.69
1226.38    5.578    92.10
1236.38    5.570    92.51
1246.38    5.561    92.93
1256.38    5.551    93.34
1266.38    5.540    93.76
1276.38    5.526    94.18
1286.38    5.512    94.60
1296.38    5.495    95.02
1306.38    5.478    95.45
1316.38    5.458    95.88
1326.38    5.437    96.31
1336.38    5.413    96.74
1346.38    5.388    97.18
1356.38    5.361    97.63
1366.38    5.332    98.07
1376.38    5.301    98.53
1386.38    5.268    98.99
1396.38    5.233    99.45
1406.38    5.195    99.92
1416.38    5.154   100.40
1426.38    5.111   100.89
1436.38    5.066   101.38
1446.38    5.017   101.89
1456.38    4.966   102.40
1466.38    4.911   102.93
1476.38    4.853   103.47
1486.38    4.792   104.02
1496.38    4.727   104.58
1506.38    4.657   105.16
1516.38    4.584   105.77
1526.38    4.506   106.39
1536.38    4.423   107.03
1546.38    4.335   107.70
1556.38    4.241   108.39
1566.38    4.141   109.12
1576.38    4.034   109.89
1586.38    3.920   110.70
1596.38    3.798   111.56
1606.38    3.666   112.48
1616.38    3.524   113.47
1626.38    3.370   114.55
1636.38    3.202   115.74
1646.38    3.019   117.06
1656.38    2.817   118.57
1666.38    2.592   120.32
1676.38    2.339   122.43
1686.38    2.049   125.10
1696.38    1.712   128.74
1706.38    1.311   134.40
1716.38    0.827   146.07
1726.38    0.345   194.52
1736.38    0.603   281.99
1746.38    1.047   301.73
1756.38    1.350   310.64
1766.38    1.556   316.70
1776.38    1.706   321.50
1786.38    1.819   325.62
1796.38    1.909   329.31
1806.38    1.983   332.69
1816.38    2.046   335.85
1826.38    2.100   338.83
1836.38    2.148   341.67
1846.38    2.191   344.39
1856.38    2.231   347.01
1866.38    2.269   349.54
1876.38    2.305   352.00
1886.38    2.339   354.37
1896.38    2.373   356.68
1906.38    2.406   358.93
1916.38    2.438     1.11
1926.38    2.471     3.24
1936.38    2.504     5.31
1946.38    2.536     7.33
1956.38    2.570     9.30
1966.38    2.603    11.21
1976.38    2.637    13.08
1986.38    2.671    14.90
1996.38    2.706    16.68
2006.38    2.741    18.41
2016.38    2.776    20.09
2026.38    2.812    21.73
2036.38    2.849    23.33
2046.38    2.885    24.89
2056.38    2.923    26.41
2066.38    2.961    27.89
2076.38    2.999    29.34
2086.38    3.037    30.74
2096.38    3.076    32.12
2106.38    3.115    33.45
2116.38    3.155    34.76
2126.38    3.194    36.03
2136.38    3.234    37.27
2146.38    3.274    38.48
2156.38    3.315    39.66
2166.38    3.355    40.82
2176.38    3.396    41.94
2186.38    3.437    43.04
2196.38    3.478    44.11
2206.38    3.519    45.16
2216.38    3.560    46.18
2226.38    3.601    47.18
2236.38    3.642    48.16
2246.38    3.683    49.12
2256.38    3.724    50.05
2266.38    3.764    50.97
2276.38    3.805    51.86
2286.38    3.846    52.74
2296.38    3.886    53.59
2306.38    3.927    54.43
2316.38    3.967    55.26
2326.38    4.007    56.06
2336.38    4.047    56.85
2346.38    4.087    57.63
2356.38    4.126    58.39
2366.38    4.166    59.13
2376.38    4.205    59.87
2386.38    4.243    60.58
2396.38    4.282    61.29
2406.38    4.320    61.98
2416.38    4.358    62.66
2426.38    4.395    63.33
2436.38    4.432    63.99
2446.38    4.469    64.64
2456.38    4.506    65.27
2466.38    4.542    65.90
2476.38    4.577    66.52
2486.38    4.613    67.12
2496.38    4.648    67.72
2506.38    4.682    68.31
2516.38    4.716    68.89
2526.38    4.750    69.46
2536.38    4.783    70.03
2546.38    4.815    70.59
2556.38    4.847    71.13
2566.38    4.879    71.68
2576.38    4.910    72.21
2586.38    4.941    72.74
2596.38    4.971    73.26
2606.38    5.000    73.78
2616.38    5.029    74.29
2626.38    5.058    74.79
2636.38    5.086    75.29
2646.38    5.113    75.78
2656.38    5.140    76.27
2666.38    5.166    76.75
2676.38    5.191    77.23
2686.38    5.216    77.70
2696.38    5.240    78.17
2706.38    5.264    78.64
2716.38    5.287    79.10
2726.38    5.309    79.56
2736.38    5.330    80.01
2746.38    5.351    80.46
2756.38    5.371    80.90
2766.38    5.390    81.35
2776.38    5.409    81.79
2786.38    5.427    82.22
2796.38    5.444    82.66
2806.38    5.460    83.09
2816.38    5.475    83.52
2826.38    5.490    83.94
2836.38    5.503    84.37
2846.38    5.516    84.79
2856.38    5.528    85.21
2866.38    5.539    85.63
2876.38    5.549    86.05
2886.38    5.558    86.46
2896.38    5.567    86.88
2906.38    5.574    87.29
2916.38    5.580    87.70






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 16:48:09



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