Double Star Calculator - Orbit

Orbital Elements for STF262AB
WDS: STF262AB WDS ID/Discoverer
P: 2400.000 Orbital period (years)
a: 6.5 Semi-major axis (arcseconds)
i: 102.9 Inclination (degrees)
Ω: 188.0 Longitude of ascending node (degrees)
T: 940.000 Epoch of periastron passage (year)
e: 0.4 Eccentricity
ω: 113.3 Longitude of periastron (degrees)
Start-Year: 825.0 Year
End-Year: 3225.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF262AB
Position: 022903.96+672408.7 Epoch-2000 right ascension and declination
WDS-ID: 02291+6724 WDS designation
Discoverer Code: STF262AB Discover designation and components
ADS number: 1860 Aitken Double Star catalog
HD number: 15089 HD catalog number
Hipparcos number: 11569 Hipparcos catalog number
V1: 4.63 Magnitude of the primary
V2: 6.92 Magnitude of the secondary
Equinox: Equinox
Date: 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: Tok2021b Reference

Double Star Orbit for STF262AB



WDS 6th Orbit including measures of STF262AB

-- 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 STF262AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    3.080   227.21
--------------------------
825.00    1.599   154.16
835.00    1.405   148.39
845.00    1.226   140.84
855.00    1.072   130.93
865.00    0.957   118.19
875.00    0.897   102.89
885.00    0.904    86.68
895.00    0.977    71.83
905.00    1.101    59.69
915.00    1.261    50.32
925.00    1.443    43.17
935.00    1.638    37.68
945.00    1.839    33.37
955.00    2.042    29.92
965.00    2.246    27.09
975.00    2.447    24.73
985.00    2.643    22.73
995.00    2.835    21.00
1005.00    3.020    19.48
1015.00    3.199    18.14
1025.00    3.369    16.94
1035.00    3.532    15.85
1045.00    3.686    14.86
1055.00    3.832    13.94
1065.00    3.969    13.09
1075.00    4.097    12.29
1085.00    4.216    11.54
1095.00    4.326    10.83
1105.00    4.428    10.15
1115.00    4.520     9.50
1125.00    4.605     8.88
1135.00    4.681     8.28
1145.00    4.749     7.70
1155.00    4.809     7.13
1165.00    4.862     6.57
1175.00    4.907     6.03
1185.00    4.945     5.50
1195.00    4.976     4.97
1205.00    5.000     4.45
1215.00    5.019     3.93
1225.00    5.031     3.42
1235.00    5.037     2.91
1245.00    5.038     2.39
1255.00    5.033     1.88
1265.00    5.023     1.37
1275.00    5.008     0.85
1285.00    4.988     0.34
1295.00    4.964   359.81
1305.00    4.936   359.28
1315.00    4.904   358.75
1325.00    4.868   358.20
1335.00    4.828   357.65
1345.00    4.785   357.09
1355.00    4.738   356.52
1365.00    4.688   355.94
1375.00    4.636   355.34
1385.00    4.580   354.73
1395.00    4.522   354.10
1405.00    4.462   353.46
1415.00    4.399   352.80
1425.00    4.334   352.12
1435.00    4.267   351.42
1445.00    4.198   350.69
1455.00    4.127   349.95
1465.00    4.055   349.17
1475.00    3.981   348.37
1485.00    3.906   347.53
1495.00    3.830   346.67
1505.00    3.752   345.76
1515.00    3.674   344.82
1525.00    3.595   343.84
1535.00    3.516   342.82
1545.00    3.436   341.74
1555.00    3.356   340.62
1565.00    3.276   339.44
1575.00    3.195   338.20
1585.00    3.115   336.90
1595.00    3.036   335.53
1605.00    2.957   334.08
1615.00    2.878   332.56
1625.00    2.801   330.95
1635.00    2.725   329.25
1645.00    2.651   327.46
1655.00    2.578   325.56
1665.00    2.507   323.55
1675.00    2.439   321.43
1685.00    2.374   319.19
1695.00    2.311   316.83
1705.00    2.252   314.33
1715.00    2.196   311.71
1725.00    2.145   308.96
1735.00    2.098   306.07
1745.00    2.056   303.07
1755.00    2.019   299.94
1765.00    1.988   296.71
1775.00    1.962   293.38
1785.00    1.943   289.98
1795.00    1.930   286.52
1805.00    1.924   283.03
1815.00    1.925   279.52
1825.00    1.932   276.03
1835.00    1.945   272.58
1845.00    1.965   269.19
1855.00    1.991   265.87
1865.00    2.023   262.65
1875.00    2.061   259.54
1885.00    2.104   256.54
1895.00    2.152   253.68
1905.00    2.204   250.94
1915.00    2.260   248.34
1925.00    2.321   245.87
1935.00    2.385   243.52
1945.00    2.452   241.31
1955.00    2.522   239.21
1965.00    2.594   237.22
1975.00    2.669   235.35
1985.00    2.745   233.58
1995.00    2.824   231.91
2005.00    2.904   230.33
2015.00    2.985   228.83
2025.00    3.067   227.41
2035.00    3.151   226.07
2045.00    3.235   224.80
2055.00    3.320   223.59
2065.00    3.406   222.45
2075.00    3.492   221.36
2085.00    3.578   220.32
2095.00    3.665   219.33
2105.00    3.751   218.39
2115.00    3.838   217.48
2125.00    3.925   216.62
2135.00    4.011   215.80
2145.00    4.097   215.01
2155.00    4.183   214.25
2165.00    4.269   213.53
2175.00    4.354   212.83
2185.00    4.439   212.16
2195.00    4.524   211.51
2205.00    4.607   210.89
2215.00    4.690   210.29
2225.00    4.773   209.71
2235.00    4.854   209.15
2245.00    4.935   208.61
2255.00    5.015   208.09
2265.00    5.094   207.58
2275.00    5.173   207.09
2285.00    5.250   206.61
2295.00    5.326   206.15
2305.00    5.401   205.70
2315.00    5.476   205.26
2325.00    5.549   204.83
2335.00    5.621   204.42
2345.00    5.691   204.01
2355.00    5.761   203.61
2365.00    5.829   203.23
2375.00    5.896   202.85
2385.00    5.961   202.48
2395.00    6.025   202.12
2405.00    6.088   201.77
2415.00    6.149   201.42
2425.00    6.209   201.08
2435.00    6.267   200.75
2445.00    6.324   200.42
2455.00    6.379   200.10
2465.00    6.432   199.78
2475.00    6.484   199.47
2485.00    6.534   199.17
2495.00    6.582   198.87
2505.00    6.628   198.57
2515.00    6.672   198.28
2525.00    6.715   197.99
2535.00    6.756   197.70
2545.00    6.794   197.42
2555.00    6.831   197.14
2565.00    6.865   196.86
2575.00    6.897   196.59
2585.00    6.928   196.32
2595.00    6.956   196.05
2605.00    6.981   195.78
2615.00    7.005   195.51
2625.00    7.026   195.25
2635.00    7.044   194.99
2645.00    7.060   194.73
2655.00    7.074   194.47
2665.00    7.085   194.21
2675.00    7.094   193.95
2685.00    7.099   193.69
2695.00    7.102   193.44
2705.00    7.102   193.18
2715.00    7.100   192.92
2725.00    7.094   192.67
2735.00    7.086   192.41
2745.00    7.074   192.15
2755.00    7.059   191.89
2765.00    7.041   191.63
2775.00    7.020   191.37
2785.00    6.996   191.10
2795.00    6.968   190.84
2805.00    6.936   190.57
2815.00    6.901   190.30
2825.00    6.863   190.02
2835.00    6.821   189.75
2845.00    6.775   189.47
2855.00    6.725   189.18
2865.00    6.671   188.89
2875.00    6.613   188.60
2885.00    6.551   188.30
2895.00    6.485   187.99
2905.00    6.414   187.68
2915.00    6.340   187.36
2925.00    6.260   187.04
2935.00    6.177   186.70
2945.00    6.088   186.36
2955.00    5.995   186.00
2965.00    5.897   185.63
2975.00    5.794   185.26
2985.00    5.686   184.86
2995.00    5.573   184.45
3005.00    5.455   184.03
3015.00    5.331   183.58
3025.00    5.202   183.11
3035.00    5.068   182.62
3045.00    4.929   182.10
3055.00    4.784   181.55
3065.00    4.633   180.97
3075.00    4.478   180.34
3085.00    4.316   179.67
3095.00    4.149   178.95
3105.00    3.977   178.16
3115.00    3.799   177.30
3125.00    3.617   176.36
3135.00    3.429   175.31
3145.00    3.236   174.15
3155.00    3.039   172.83
3165.00    2.838   171.33
3175.00    2.634   169.59
3185.00    2.427   167.56
3195.00    2.218   165.16
3205.00    2.010   162.25
3215.00    1.802   158.67






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 15:00:58



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