Double Star Calculator - Orbit

Orbital Elements for STF1534
WDS: STF1534 WDS ID/Discoverer
P: 1676.179 Orbital period (years)
a: 9.61813 Semi-major axis (arcseconds)
i: 105.502 Inclination (degrees)
Ω: 170.983 Longitude of ascending node (degrees)
T: 1717.618 Epoch of periastron passage (year)
e: 0.82209 Eccentricity
ω: 95.699 Longitude of periastron (degrees)
Start-Year: 1186.91055 Year
End-Year: 2863.08945 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1534
Position: 112149.34+181124.0 Epoch-2000 right ascension and declination
WDS-ID: 11218+1811 WDS designation
Discoverer Code: STF1534 Discover designation and components
ADS number: 8140 Aitken Double Star catalog
HD number: 98736B HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 8.08 Magnitude of the primary
V2: 11.14 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 5 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 STF1534



WDS 6th Orbit including measures of STF1534

-- 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 STF1534
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    5.070   312.81
--------------------------
1186.91    6.319   210.80
1196.91    6.360   210.05
1206.91    6.400   209.30
1216.91    6.438   208.57
1226.91    6.476   207.85
1236.91    6.512   207.13
1246.91    6.547   206.42
1256.91    6.581   205.72
1266.91    6.613   205.02
1276.91    6.644   204.34
1286.91    6.673   203.65
1296.91    6.701   202.98
1306.91    6.726   202.31
1316.91    6.750   201.64
1326.91    6.771   200.98
1336.91    6.791   200.32
1346.91    6.808   199.67
1356.91    6.822   199.02
1366.91    6.834   198.37
1376.91    6.843   197.72
1386.91    6.849   197.08
1396.91    6.851   196.43
1406.91    6.851   195.79
1416.91    6.847   195.14
1426.91    6.839   194.50
1436.91    6.826   193.85
1446.91    6.810   193.20
1456.91    6.789   192.55
1466.91    6.762   191.89
1476.91    6.731   191.22
1486.91    6.693   190.55
1496.91    6.649   189.87
1506.91    6.599   189.18
1516.91    6.540   188.48
1526.91    6.474   187.77
1536.91    6.399   187.04
1546.91    6.314   186.29
1556.91    6.218   185.52
1566.91    6.110   184.73
1576.91    5.989   183.90
1586.91    5.853   183.04
1596.91    5.699   182.13
1606.91    5.525   181.17
1616.91    5.329   180.15
1626.91    5.106   179.04
1636.91    4.850   177.82
1646.91    4.555   176.45
1656.91    4.212   174.88
1666.91    3.808   173.00
1676.91    3.324   170.62
1686.91    2.734   167.32
1696.91    2.003   161.86
1706.91    1.114   148.50
1716.91    0.465    70.01
1726.91    1.244     8.83
1736.91    2.081   357.36
1746.91    2.726   352.10
1756.91    3.218   348.68
1766.91    3.600   346.08
1776.91    3.903   343.93
1786.91    4.147   342.07
1796.91    4.346   340.39
1806.91    4.510   338.85
1816.91    4.646   337.41
1826.91    4.759   336.05
1836.91    4.853   334.74
1846.91    4.930   333.48
1856.91    4.994   332.25
1866.91    5.046   331.05
1876.91    5.088   329.87
1886.91    5.121   328.71
1896.91    5.146   327.56
1906.91    5.165   326.43
1916.91    5.177   325.30
1926.91    5.184   324.17
1936.91    5.187   323.05
1946.91    5.185   321.92
1956.91    5.179   320.80
1966.91    5.171   319.67
1976.91    5.159   318.53
1986.91    5.145   317.39
1996.91    5.129   316.25
2006.91    5.110   315.10
2016.91    5.091   313.93
2026.91    5.069   312.76
2036.91    5.047   311.58
2046.91    5.023   310.39
2056.91    4.999   309.18
2066.91    4.974   307.97
2076.91    4.949   306.74
2086.91    4.923   305.50
2096.91    4.897   304.24
2106.91    4.872   302.98
2116.91    4.846   301.70
2126.91    4.821   300.40
2136.91    4.796   299.09
2146.91    4.772   297.77
2156.91    4.748   296.44
2166.91    4.725   295.09
2176.91    4.703   293.73
2186.91    4.682   292.36
2196.91    4.662   290.97
2206.91    4.643   289.58
2216.91    4.625   288.17
2226.91    4.608   286.75
2236.91    4.593   285.32
2246.91    4.579   283.88
2256.91    4.567   282.44
2266.91    4.556   280.98
2276.91    4.547   279.52
2286.91    4.539   278.06
2296.91    4.534   276.59
2306.91    4.529   275.12
2316.91    4.527   273.64
2326.91    4.526   272.17
2336.91    4.527   270.69
2346.91    4.530   269.22
2356.91    4.534   267.75
2366.91    4.541   266.28
2376.91    4.549   264.81
2386.91    4.559   263.36
2396.91    4.571   261.90
2406.91    4.584   260.46
2416.91    4.600   259.03
2426.91    4.617   257.60
2436.91    4.636   256.19
2446.91    4.656   254.79
2456.91    4.678   253.40
2466.91    4.702   252.03
2476.91    4.727   250.67
2486.91    4.754   249.32
2496.91    4.782   247.99
2506.91    4.812   246.68
2516.91    4.843   245.38
2526.91    4.875   244.10
2536.91    4.909   242.84
2546.91    4.944   241.59
2556.91    4.980   240.36
2566.91    5.017   239.15
2576.91    5.055   237.96
2586.91    5.094   236.78
2596.91    5.134   235.63
2606.91    5.175   234.49
2616.91    5.216   233.37
2626.91    5.259   232.27
2636.91    5.302   231.18
2646.91    5.346   230.12
2656.91    5.390   229.07
2666.91    5.435   228.03
2676.91    5.480   227.02
2686.91    5.525   226.02
2696.91    5.571   225.04
2706.91    5.617   224.07
2716.91    5.664   223.12
2726.91    5.710   222.19
2736.91    5.756   221.27
2746.91    5.803   220.36
2756.91    5.849   219.47
2766.91    5.895   218.59
2776.91    5.941   217.73
2786.91    5.987   216.88
2796.91    6.032   216.04
2806.91    6.077   215.22
2816.91    6.122   214.41
2826.91    6.166   213.61
2836.91    6.209   212.82
2846.91    6.252   212.04
2856.91    6.294   211.27






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 16:37:20



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