Double Star Calculator - Orbit

Orbital Elements for STF2369
WDS: STF2369 WDS ID/Discoverer
P: 1458.909 Orbital period (years)
a: 3.70102 Semi-major axis (arcseconds)
i: 98.969 Inclination (degrees)
Ω: 126.819 Longitude of ascending node (degrees)
T: 2066.311 Epoch of periastron passage (year)
e: 0.95848 Eccentricity
ω: 242.157 Longitude of periastron (degrees)
Start-Year: 1295.5453499999999 Year
End-Year: 2754.45465 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2369
Position: 184355.78+023716.6 Epoch-2000 right ascension and declination
WDS-ID: 18439+0237 WDS designation
Discoverer Code: STF2369 Discover designation and components
ADS number: 11617 Aitken Double Star catalog
HD number: 173174 HD catalog number
Hipparcos number: 91889 Hipparcos catalog number
V1: 9.43 Magnitude of the primary
V2: 8.32 Magnitude of the secondary
Equinox: Equinox
Date: 2007 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: Izm2019 Reference

Double Star Orbit for STF2369



WDS 6th Orbit including measures of STF2369

-- 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 STF2369
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.277    14.39
--------------------------
1295.55    3.602   110.86
1305.55    3.586   110.75
1315.55    3.569   110.63
1325.55    3.551   110.51
1335.55    3.532   110.39
1345.55    3.513   110.27
1355.55    3.492   110.15
1365.55    3.471   110.02
1375.55    3.449   109.90
1385.55    3.426   109.77
1395.55    3.402   109.64
1405.55    3.378   109.51
1415.55    3.352   109.38
1425.55    3.326   109.24
1435.55    3.299   109.11
1445.55    3.271   108.97
1455.55    3.243   108.83
1465.55    3.213   108.68
1475.55    3.183   108.53
1485.55    3.152   108.38
1495.55    3.120   108.23
1505.55    3.087   108.08
1515.55    3.053   107.92
1525.55    3.019   107.75
1535.55    2.983   107.59
1545.55    2.947   107.42
1555.55    2.910   107.24
1565.55    2.873   107.06
1575.55    2.834   106.88
1585.55    2.795   106.69
1595.55    2.754   106.49
1605.55    2.713   106.29
1615.55    2.671   106.08
1625.55    2.628   105.87
1635.55    2.585   105.65
1645.55    2.540   105.42
1655.55    2.495   105.18
1665.55    2.448   104.94
1675.55    2.401   104.68
1685.55    2.353   104.41
1695.55    2.304   104.14
1705.55    2.254   103.85
1715.55    2.204   103.55
1725.55    2.152   103.23
1735.55    2.099   102.90
1745.55    2.046   102.55
1755.55    1.991   102.18
1765.55    1.936   101.79
1775.55    1.879   101.37
1785.55    1.822   100.94
1795.55    1.763   100.47
1805.55    1.704    99.97
1815.55    1.643    99.43
1825.55    1.582    98.85
1835.55    1.519    98.23
1845.55    1.455    97.55
1855.55    1.391    96.81
1865.55    1.325    95.99
1875.55    1.258    95.09
1885.55    1.190    94.09
1895.55    1.121    92.96
1905.55    1.051    91.68
1915.55    0.980    90.23
1925.55    0.908    88.54
1935.55    0.836    86.56
1945.55    0.762    84.20
1955.55    0.689    81.34
1965.55    0.615    77.80
1975.55    0.543    73.30
1985.55    0.472    67.43
1995.55    0.406    59.57
2005.55    0.347    48.86
2015.55    0.302    34.41
2025.55    0.278    16.26
2035.55    0.279   356.58
2045.55    0.301   338.54
2055.55    0.319   323.10
2065.55    0.140   301.20
2075.55    0.580   126.46
2085.55    0.939   123.79
2095.55    1.199   122.47
2105.55    1.410   121.59
2115.55    1.590   120.92
2125.55    1.747   120.38
2135.55    1.888   119.92
2145.55    2.016   119.53
2155.55    2.133   119.18
2165.55    2.240   118.87
2175.55    2.340   118.58
2185.55    2.432   118.32
2195.55    2.519   118.07
2205.55    2.600   117.84
2215.55    2.676   117.63
2225.55    2.747   117.42
2235.55    2.815   117.23
2245.55    2.878   117.04
2255.55    2.938   116.86
2265.55    2.995   116.69
2275.55    3.048   116.53
2285.55    3.099   116.37
2295.55    3.147   116.22
2305.55    3.192   116.07
2315.55    3.235   115.92
2325.55    3.275   115.78
2335.55    3.313   115.64
2345.55    3.349   115.50
2355.55    3.383   115.37
2365.55    3.415   115.24
2375.55    3.446   115.11
2385.55    3.474   114.99
2395.55    3.501   114.87
2405.55    3.525   114.74
2415.55    3.549   114.62
2425.55    3.570   114.50
2435.55    3.591   114.39
2445.55    3.609   114.27
2455.55    3.626   114.16
2465.55    3.642   114.04
2475.55    3.657   113.93
2485.55    3.670   113.82
2495.55    3.681   113.71
2505.55    3.692   113.60
2515.55    3.701   113.49
2525.55    3.709   113.38
2535.55    3.716   113.27
2545.55    3.722   113.16
2555.55    3.726   113.05
2565.55    3.730   112.94
2575.55    3.732   112.84
2585.55    3.733   112.73
2595.55    3.733   112.62
2605.55    3.732   112.51
2615.55    3.730   112.40
2625.55    3.727   112.30
2635.55    3.723   112.19
2645.55    3.718   112.08
2655.55    3.712   111.97
2665.55    3.705   111.86
2675.55    3.697   111.75
2685.55    3.688   111.64
2695.55    3.678   111.53
2705.55    3.667   111.42
2715.55    3.656   111.31
2725.55    3.643   111.19
2735.55    3.630   111.08
2745.55    3.615   110.97






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 17:54:40



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