Double Star Calculator - Orbit

Orbital Elements for STF2486AB
WDS: STF2486AB WDS ID/Discoverer
P: 3100.000 Orbital period (years)
a: 12.75 Semi-major axis (arcseconds)
i: 119.06 Inclination (degrees)
Ω: 255.22 Longitude of ascending node (degrees)
T: 2520.000 Epoch of periastron passage (year)
e: 0.5 Eccentricity
ω: 186.09 Longitude of periastron (degrees)
Start-Year: 475.0 Year
End-Year: 3575.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2486AB
Position: 191205.03+495120.7 Epoch-2000 right ascension and declination
WDS-ID: 19121+4951 WDS designation
Discoverer Code: STF2486AB Discover designation and components
ADS number: 12169 Aitken Double Star catalog
HD number: 179958 HD catalog number
Hipparcos number: 94336 Hipparcos catalog number
V1: 6.54 Magnitude of the primary
V2: 6.67 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1991 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: Hle1994 Reference

Double Star Orbit for STF2486AB



WDS 6th Orbit including measures of STF2486AB

-- 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 STF2486AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    7.037   202.48
--------------------------
475.00   17.079   263.78
485.00   17.171   263.51
495.00   17.260   263.24
505.00   17.348   262.98
515.00   17.433   262.72
525.00   17.516   262.46
535.00   17.597   262.20
545.00   17.676   261.94
555.00   17.752   261.69
565.00   17.827   261.44
575.00   17.899   261.19
585.00   17.969   260.94
595.00   18.036   260.70
605.00   18.102   260.46
615.00   18.165   260.21
625.00   18.226   259.97
635.00   18.285   259.74
645.00   18.342   259.50
655.00   18.397   259.26
665.00   18.450   259.03
675.00   18.500   258.80
685.00   18.548   258.57
695.00   18.594   258.34
705.00   18.638   258.11
715.00   18.680   257.88
725.00   18.720   257.65
735.00   18.758   257.43
745.00   18.793   257.20
755.00   18.827   256.98
765.00   18.858   256.75
775.00   18.887   256.53
785.00   18.914   256.31
795.00   18.939   256.09
805.00   18.962   255.86
815.00   18.983   255.64
825.00   19.002   255.42
835.00   19.019   255.20
845.00   19.033   254.98
855.00   19.046   254.77
865.00   19.057   254.55
875.00   19.065   254.33
885.00   19.071   254.11
895.00   19.076   253.89
905.00   19.078   253.67
915.00   19.078   253.45
925.00   19.076   253.24
935.00   19.072   253.02
945.00   19.066   252.80
955.00   19.058   252.58
965.00   19.048   252.36
975.00   19.036   252.14
985.00   19.022   251.92
995.00   19.006   251.70
1005.00   18.988   251.48
1015.00   18.968   251.26
1025.00   18.945   251.04
1035.00   18.921   250.82
1045.00   18.895   250.60
1055.00   18.866   250.38
1065.00   18.836   250.15
1075.00   18.804   249.93
1085.00   18.769   249.70
1095.00   18.733   249.48
1105.00   18.694   249.25
1115.00   18.654   249.02
1125.00   18.611   248.80
1135.00   18.567   248.57
1145.00   18.520   248.33
1155.00   18.472   248.10
1165.00   18.421   247.87
1175.00   18.369   247.63
1185.00   18.314   247.40
1195.00   18.258   247.16
1205.00   18.199   246.92
1215.00   18.138   246.68
1225.00   18.076   246.44
1235.00   18.011   246.20
1245.00   17.944   245.95
1255.00   17.876   245.70
1265.00   17.805   245.45
1275.00   17.732   245.20
1285.00   17.658   244.95
1295.00   17.581   244.69
1305.00   17.502   244.43
1315.00   17.421   244.17
1325.00   17.339   243.91
1335.00   17.254   243.64
1345.00   17.167   243.38
1355.00   17.078   243.11
1365.00   16.988   242.83
1375.00   16.895   242.56
1385.00   16.800   242.28
1395.00   16.703   241.99
1405.00   16.605   241.71
1415.00   16.504   241.42
1425.00   16.401   241.12
1435.00   16.296   240.83
1445.00   16.190   240.52
1455.00   16.081   240.22
1465.00   15.970   239.91
1475.00   15.857   239.60
1485.00   15.743   239.28
1495.00   15.626   238.96
1505.00   15.507   238.63
1515.00   15.387   238.30
1525.00   15.264   237.96
1535.00   15.140   237.61
1545.00   15.013   237.26
1555.00   14.884   236.91
1565.00   14.754   236.55
1575.00   14.622   236.18
1585.00   14.487   235.80
1595.00   14.351   235.42
1605.00   14.213   235.03
1615.00   14.073   234.64
1625.00   13.931   234.23
1635.00   13.787   233.82
1645.00   13.641   233.40
1655.00   13.493   232.96
1665.00   13.344   232.52
1675.00   13.192   232.07
1685.00   13.039   231.61
1695.00   12.884   231.14
1705.00   12.727   230.65
1715.00   12.569   230.16
1725.00   12.409   229.65
1735.00   12.246   229.13
1745.00   12.083   228.59
1755.00   11.917   228.04
1765.00   11.750   227.47
1775.00   11.582   226.89
1785.00   11.412   226.29
1795.00   11.240   225.67
1805.00   11.067   225.03
1815.00   10.892   224.37
1825.00   10.716   223.69
1835.00   10.539   222.99
1845.00   10.361   222.26
1855.00   10.181   221.51
1865.00   10.001   220.73
1875.00    9.819   219.92
1885.00    9.636   219.08
1895.00    9.453   218.21
1905.00    9.269   217.30
1915.00    9.084   216.36
1925.00    8.899   215.37
1935.00    8.713   214.35
1945.00    8.528   213.28
1955.00    8.342   212.17
1965.00    8.157   211.00
1975.00    7.972   209.78
1985.00    7.788   208.50
1995.00    7.605   207.16
2005.00    7.423   205.75
2015.00    7.242   204.27
2025.00    7.064   202.72
2035.00    6.887   201.09
2045.00    6.713   199.37
2055.00    6.543   197.56
2065.00    6.376   195.66
2075.00    6.213   193.65
2085.00    6.054   191.54
2095.00    5.901   189.32
2105.00    5.754   186.98
2115.00    5.613   184.52
2125.00    5.480   181.94
2135.00    5.355   179.23
2145.00    5.238   176.40
2155.00    5.132   173.44
2165.00    5.035   170.37
2175.00    4.950   167.18
2185.00    4.877   163.89
2195.00    4.816   160.51
2205.00    4.768   157.05
2215.00    4.734   153.53
2225.00    4.713   149.97
2235.00    4.705   146.39
2245.00    4.711   142.80
2255.00    4.730   139.24
2265.00    4.762   135.71
2275.00    4.806   132.24
2285.00    4.860   128.84
2295.00    4.925   125.52
2305.00    4.999   122.30
2315.00    5.081   119.17
2325.00    5.169   116.14
2335.00    5.263   113.22
2345.00    5.360   110.41
2355.00    5.460   107.69
2365.00    5.561   105.08
2375.00    5.662   102.56
2385.00    5.762   100.12
2395.00    5.858    97.77
2405.00    5.950    95.49
2415.00    6.037    93.28
2425.00    6.117    91.13
2435.00    6.189    89.04
2445.00    6.251    86.98
2455.00    6.304    84.97
2465.00    6.345    82.98
2475.00    6.375    81.02
2485.00    6.392    79.07
2495.00    6.396    77.13
2505.00    6.387    75.19
2515.00    6.364    73.24
2525.00    6.328    71.26
2535.00    6.278    69.27
2545.00    6.216    67.23
2555.00    6.142    65.15
2565.00    6.056    63.02
2575.00    5.961    60.82
2585.00    5.856    58.55
2595.00    5.743    56.18
2605.00    5.624    53.73
2615.00    5.499    51.16
2625.00    5.372    48.47
2635.00    5.243    45.65
2645.00    5.115    42.69
2655.00    4.989    39.58
2665.00    4.867    36.31
2675.00    4.752    32.87
2685.00    4.644    29.27
2695.00    4.547    25.51
2705.00    4.462    21.59
2715.00    4.390    17.54
2725.00    4.334    13.36
2735.00    4.294     9.09
2745.00    4.273     4.76
2755.00    4.270     0.40
2765.00    4.285   356.06
2775.00    4.320   351.77
2785.00    4.373   347.56
2795.00    4.443   343.47
2805.00    4.531   339.52
2815.00    4.635   335.74
2825.00    4.753   332.13
2835.00    4.885   328.71
2845.00    5.028   325.48
2855.00    5.182   322.43
2865.00    5.346   319.56
2875.00    5.518   316.87
2885.00    5.697   314.34
2895.00    5.882   311.97
2905.00    6.073   309.75
2915.00    6.268   307.66
2925.00    6.466   305.70
2935.00    6.668   303.86
2945.00    6.872   302.13
2955.00    7.078   300.49
2965.00    7.286   298.95
2975.00    7.495   297.50
2985.00    7.704   296.13
2995.00    7.913   294.82
3005.00    8.123   293.59
3015.00    8.332   292.41
3025.00    8.541   291.30
3035.00    8.749   290.24
3045.00    8.957   289.22
3055.00    9.163   288.25
3065.00    9.368   287.33
3075.00    9.572   286.44
3085.00    9.774   285.60
3095.00    9.975   284.78
3105.00   10.174   284.00
3115.00   10.371   283.25
3125.00   10.567   282.52
3135.00   10.761   281.82
3145.00   10.952   281.15
3155.00   11.142   280.50
3165.00   11.330   279.87
3175.00   11.516   279.26
3185.00   11.699   278.67
3195.00   11.881   278.10
3205.00   12.060   277.55
3215.00   12.237   277.01
3225.00   12.412   276.48
3235.00   12.585   275.98
3245.00   12.755   275.48
3255.00   12.923   275.00
3265.00   13.089   274.53
3275.00   13.252   274.07
3285.00   13.414   273.63
3295.00   13.572   273.19
3305.00   13.729   272.76
3315.00   13.883   272.35
3325.00   14.035   271.94
3335.00   14.185   271.54
3345.00   14.332   271.15
3355.00   14.477   270.77
3365.00   14.619   270.39
3375.00   14.760   270.02
3385.00   14.898   269.66
3395.00   15.033   269.31
3405.00   15.166   268.96
3415.00   15.297   268.62
3425.00   15.426   268.28
3435.00   15.552   267.95
3445.00   15.676   267.62
3455.00   15.798   267.30
3465.00   15.917   266.99
3475.00   16.034   266.68
3485.00   16.149   266.37
3495.00   16.261   266.07
3505.00   16.371   265.77
3515.00   16.479   265.48
3525.00   16.585   265.18
3535.00   16.688   264.90
3545.00   16.789   264.61
3555.00   16.888   264.33
3565.00   16.984   264.06






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 18:01:33



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