Double Star Calculator - Orbit

Orbital Elements for STF2863AB
WDS: STF2863AB WDS ID/Discoverer
P: 2501.305 Orbital period (years)
a: 9.33308 Semi-major axis (arcseconds)
i: 116.242 Inclination (degrees)
Ω: 112.047 Longitude of ascending node (degrees)
T: 1681.870 Epoch of periastron passage (year)
e: 0.74899 Eccentricity
ω: 76.324 Longitude of periastron (degrees)
Start-Year: 774.34745 Year
End-Year: 3275.65255 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2863AB
Position: 220347.45+643740.7 Epoch-2000 right ascension and declination
WDS-ID: 22038+6438 WDS designation
Discoverer Code: STF2863AB Discover designation and components
ADS number: 15600 Aitken Double Star catalog
HD number: 209790 HD catalog number
Hipparcos number: 108917 Hipparcos catalog number
V1: 4.45 Magnitude of the primary
V2: 6.40 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 STF2863AB



WDS 6th Orbit including measures of STF2863AB

-- 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 STF2863AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    8.154   273.97
--------------------------
774.35    6.865   207.88
784.35    6.835   207.10
794.35    6.805   206.31
804.35    6.776   205.51
814.35    6.747   204.71
824.35    6.718   203.90
834.35    6.690   203.08
844.35    6.662   202.26
854.35    6.634   201.42
864.35    6.607   200.59
874.35    6.580   199.74
884.35    6.554   198.89
894.35    6.528   198.03
904.35    6.502   197.17
914.35    6.477   196.29
924.35    6.452   195.42
934.35    6.428   194.53
944.35    6.404   193.64
954.35    6.381   192.74
964.35    6.358   191.83
974.35    6.336   190.92
984.35    6.314   190.00
994.35    6.293   189.08
1004.35    6.272   188.15
1014.35    6.251   187.21
1024.35    6.231   186.27
1034.35    6.211   185.32
1044.35    6.192   184.36
1054.35    6.173   183.40
1064.35    6.155   182.44
1074.35    6.137   181.46
1084.35    6.119   180.49
1094.35    6.102   179.50
1104.35    6.085   178.51
1114.35    6.069   177.52
1124.35    6.053   176.52
1134.35    6.037   175.51
1144.35    6.022   174.50
1154.35    6.006   173.49
1164.35    5.991   172.47
1174.35    5.977   171.44
1184.35    5.962   170.41
1194.35    5.947   169.38
1204.35    5.933   168.33
1214.35    5.918   167.29
1224.35    5.904   166.24
1234.35    5.889   165.18
1244.35    5.875   164.12
1254.35    5.860   163.05
1264.35    5.845   161.98
1274.35    5.830   160.90
1284.35    5.814   159.82
1294.35    5.798   158.73
1304.35    5.781   157.63
1314.35    5.763   156.53
1324.35    5.745   155.42
1334.35    5.725   154.31
1344.35    5.705   153.18
1354.35    5.684   152.05
1364.35    5.661   150.91
1374.35    5.636   149.76
1384.35    5.610   148.59
1394.35    5.582   147.42
1404.35    5.552   146.24
1414.35    5.520   145.04
1424.35    5.485   143.82
1434.35    5.447   142.60
1444.35    5.405   141.35
1454.35    5.360   140.08
1464.35    5.311   138.79
1474.35    5.257   137.48
1484.35    5.199   136.13
1494.35    5.134   134.76
1504.35    5.063   133.34
1514.35    4.984   131.89
1524.35    4.898   130.38
1534.35    4.802   128.82
1544.35    4.695   127.19
1554.35    4.577   125.49
1564.35    4.444   123.68
1574.35    4.296   121.76
1584.35    4.129   119.69
1594.35    3.941   117.43
1604.35    3.728   114.94
1614.35    3.487   112.11
1624.35    3.213   108.84
1634.35    2.903   104.91
1644.35    2.555    99.97
1654.35    2.171    93.36
1664.35    1.765    83.78
1674.35    1.376    68.57
1684.35    1.098    43.65
1694.35    1.075    11.02
1704.35    1.326   344.48
1714.35    1.716   328.20
1724.35    2.147   318.22
1734.35    2.574   311.58
1744.35    2.983   306.80
1754.35    3.367   303.15
1764.35    3.726   300.23
1774.35    4.060   297.80
1784.35    4.370   295.73
1794.35    4.660   293.93
1804.35    4.930   292.33
1814.35    5.182   290.90
1824.35    5.418   289.59
1834.35    5.640   288.39
1844.35    5.848   287.27
1854.35    6.043   286.23
1864.35    6.228   285.26
1874.35    6.401   284.34
1884.35    6.566   283.46
1894.35    6.721   282.63
1904.35    6.867   281.84
1914.35    7.007   281.07
1924.35    7.138   280.34
1934.35    7.263   279.63
1944.35    7.382   278.94
1954.35    7.494   278.28
1964.35    7.601   277.64
1974.35    7.702   277.01
1984.35    7.798   276.40
1994.35    7.890   275.80
2004.35    7.977   275.22
2014.35    8.059   274.65
2024.35    8.137   274.09
2034.35    8.212   273.54
2044.35    8.282   273.00
2054.35    8.349   272.46
2064.35    8.413   271.94
2074.35    8.473   271.43
2084.35    8.530   270.92
2094.35    8.584   270.42
2104.35    8.635   269.92
2114.35    8.683   269.43
2124.35    8.729   268.95
2134.35    8.772   268.47
2144.35    8.812   267.99
2154.35    8.850   267.52
2164.35    8.886   267.05
2174.35    8.919   266.59
2184.35    8.950   266.13
2194.35    8.979   265.67
2204.35    9.006   265.22
2214.35    9.031   264.77
2224.35    9.055   264.32
2234.35    9.076   263.87
2244.35    9.095   263.43
2254.35    9.113   262.98
2264.35    9.129   262.54
2274.35    9.144   262.10
2284.35    9.157   261.66
2294.35    9.168   261.23
2304.35    9.178   260.79
2314.35    9.186   260.35
2324.35    9.193   259.92
2334.35    9.198   259.48
2344.35    9.203   259.05
2354.35    9.206   258.62
2364.35    9.207   258.18
2374.35    9.208   257.75
2384.35    9.207   257.32
2394.35    9.205   256.88
2404.35    9.202   256.45
2414.35    9.198   256.02
2424.35    9.192   255.58
2434.35    9.186   255.15
2444.35    9.179   254.71
2454.35    9.170   254.28
2464.35    9.161   253.84
2474.35    9.151   253.40
2484.35    9.139   252.96
2494.35    9.127   252.52
2504.35    9.114   252.08
2514.35    9.100   251.64
2524.35    9.086   251.19
2534.35    9.070   250.75
2544.35    9.054   250.30
2554.35    9.037   249.85
2564.35    9.019   249.40
2574.35    9.001   248.95
2584.35    8.982   248.49
2594.35    8.962   248.04
2604.35    8.941   247.58
2614.35    8.920   247.12
2624.35    8.898   246.65
2634.35    8.876   246.19
2644.35    8.853   245.72
2654.35    8.829   245.25
2664.35    8.805   244.78
2674.35    8.780   244.31
2684.35    8.755   243.83
2694.35    8.729   243.35
2704.35    8.703   242.86
2714.35    8.676   242.38
2724.35    8.649   241.89
2734.35    8.622   241.39
2744.35    8.594   240.90
2754.35    8.565   240.40
2764.35    8.536   239.90
2774.35    8.507   239.39
2784.35    8.477   238.88
2794.35    8.447   238.37
2804.35    8.417   237.85
2814.35    8.387   237.33
2824.35    8.356   236.81
2834.35    8.324   236.28
2844.35    8.293   235.75
2854.35    8.261   235.21
2864.35    8.229   234.67
2874.35    8.197   234.13
2884.35    8.164   233.58
2894.35    8.131   233.03
2904.35    8.099   232.47
2914.35    8.065   231.91
2924.35    8.032   231.34
2934.35    7.999   230.77
2944.35    7.965   230.19
2954.35    7.931   229.61
2964.35    7.898   229.02
2974.35    7.864   228.43
2984.35    7.830   227.83
2994.35    7.796   227.23
3004.35    7.762   226.63
3014.35    7.727   226.01
3024.35    7.693   225.40
3034.35    7.659   224.77
3044.35    7.625   224.14
3054.35    7.591   223.51
3064.35    7.556   222.87
3074.35    7.522   222.22
3084.35    7.488   221.57
3094.35    7.454   220.91
3104.35    7.420   220.25
3114.35    7.387   219.58
3124.35    7.353   218.90
3134.35    7.319   218.22
3144.35    7.286   217.53
3154.35    7.252   216.84
3164.35    7.219   216.13
3174.35    7.186   215.43
3184.35    7.154   214.71
3194.35    7.121   213.99
3204.35    7.089   213.26
3214.35    7.057   212.53
3224.35    7.025   211.79
3234.35    6.993   211.04
3244.35    6.962   210.29
3254.35    6.931   209.52
3264.35    6.900   208.76
3274.35    6.869   207.98






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 18:35:34



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