Double Star Calculator - Orbit

Orbital Elements for STI2051AB
WDS: STI2051AB WDS ID/Discoverer
P: 1799.890 Orbital period (years)
a: 32.2191 Semi-major axis (arcseconds)
i: 105.2509 Inclination (degrees)
Ω: 10.3888 Longitude of ascending node (degrees)
T: 1798.986 Epoch of periastron passage (year)
e: 0.7054 Eccentricity
ω: 333.2549 Longitude of periastron (degrees)
Start-Year: 1125.0549999999998 Year
End-Year: 2924.945 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STI2051AB
Position: 043111.52+585837.5 Epoch-2000 right ascension and declination
WDS-ID: 04312+5858 WDS designation
Discoverer Code: STI2051AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 21088 Hipparcos catalog number
V1: 11.0 Magnitude of the primary
V2: 11.38 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: Kpp2020f Reference

Double Star Orbit for STI2051AB



WDS 6th Orbit including measures of STI2051AB

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Ephemeris of STI2051AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   11.108   234.72
--------------------------
1125.05   50.736   194.53
1135.05   50.637   194.38
1145.05   50.523   194.23
1155.05   50.395   194.08
1165.05   50.253   193.92
1175.05   50.096   193.77
1185.05   49.924   193.61
1195.05   49.737   193.46
1205.05   49.535   193.30
1215.05   49.318   193.14
1225.05   49.085   192.98
1235.05   48.836   192.82
1245.05   48.571   192.66
1255.05   48.290   192.49
1265.05   47.992   192.33
1275.05   47.677   192.16
1285.05   47.345   191.98
1295.05   46.996   191.81
1305.05   46.628   191.63
1315.05   46.243   191.45
1325.05   45.839   191.27
1335.05   45.416   191.09
1345.05   44.975   190.90
1355.05   44.513   190.70
1365.05   44.032   190.51
1375.05   43.530   190.30
1385.05   43.007   190.10
1395.05   42.462   189.89
1405.05   41.896   189.67
1415.05   41.307   189.44
1425.05   40.695   189.21
1435.05   40.059   188.98
1445.05   39.399   188.73
1455.05   38.714   188.48
1465.05   38.002   188.21
1475.05   37.265   187.94
1485.05   36.500   187.66
1495.05   35.706   187.36
1505.05   34.884   187.05
1515.05   34.031   186.72
1525.05   33.147   186.38
1535.05   32.230   186.02
1545.05   31.280   185.63
1555.05   30.294   185.22
1565.05   29.273   184.79
1575.05   28.213   184.32
1585.05   27.114   183.81
1595.05   25.974   183.26
1605.05   24.790   182.66
1615.05   23.562   182.00
1625.05   22.287   181.26
1635.05   20.963   180.44
1645.05   19.589   179.49
1655.05   18.161   178.41
1665.05   16.679   177.13
1675.05   15.141   175.60
1685.05   13.547   173.71
1695.05   11.900   171.31
1705.05   10.204   168.12
1715.05    8.475   163.65
1725.05    6.745   156.87
1735.05    5.097   145.56
1745.05    3.747   124.90
1755.05    3.207    90.82
1765.05    3.856    57.87
1775.05    5.206    38.32
1785.05    6.710    27.24
1795.05    8.084    20.14
1805.05    9.168    14.95
1815.05    9.889    10.71
1825.05   10.245     6.91
1835.05   10.284     3.25
1845.05   10.074   359.53
1855.05    9.685   355.57
1865.05    9.176   351.22
1875.05    8.600   346.32
1885.05    8.000   340.69
1895.05    7.418   334.16
1905.05    6.894   326.58
1915.05    6.467   317.87
1925.05    6.174   308.14
1935.05    6.047   297.72
1945.05    6.102   287.17
1955.05    6.335   277.11
1965.05    6.729   268.00
1975.05    7.256   260.05
1985.05    7.885   253.27
1995.05    8.591   247.55
2005.05    9.354   242.73
2015.05   10.156   238.65
2025.05   10.986   235.18
2035.05   11.835   232.20
2045.05   12.696   229.62
2055.05   13.564   227.37
2065.05   14.435   225.40
2075.05   15.305   223.65
2085.05   16.172   222.08
2095.05   17.036   220.68
2105.05   17.893   219.41
2115.05   18.744   218.25
2125.05   19.586   217.20
2135.05   20.420   216.23
2145.05   21.245   215.34
2155.05   22.060   214.51
2165.05   22.865   213.74
2175.05   23.659   213.03
2185.05   24.443   212.36
2195.05   25.216   211.73
2205.05   25.979   211.14
2215.05   26.730   210.58
2225.05   27.470   210.06
2235.05   28.198   209.56
2245.05   28.916   209.08
2255.05   29.622   208.63
2265.05   30.316   208.20
2275.05   30.999   207.79
2285.05   31.671   207.39
2295.05   32.331   207.01
2305.05   32.980   206.65
2315.05   33.617   206.30
2325.05   34.243   205.97
2335.05   34.858   205.64
2345.05   35.461   205.33
2355.05   36.052   205.03
2365.05   36.633   204.73
2375.05   37.201   204.45
2385.05   37.759   204.17
2395.05   38.305   203.91
2405.05   38.840   203.64
2415.05   39.363   203.39
2425.05   39.875   203.15
2435.05   40.376   202.90
2445.05   40.866   202.67
2455.05   41.344   202.44
2465.05   41.811   202.22
2475.05   42.266   202.00
2485.05   42.711   201.78
2495.05   43.144   201.57
2505.05   43.566   201.37
2515.05   43.976   201.17
2525.05   44.375   200.97
2535.05   44.763   200.77
2545.05   45.140   200.58
2555.05   45.505   200.39
2565.05   45.859   200.21
2575.05   46.202   200.02
2585.05   46.534   199.84
2595.05   46.853   199.67
2605.05   47.162   199.49
2615.05   47.459   199.32
2625.05   47.745   199.15
2635.05   48.019   198.98
2645.05   48.282   198.81
2655.05   48.533   198.65
2665.05   48.772   198.48
2675.05   49.000   198.32
2685.05   49.217   198.16
2695.05   49.421   198.00
2705.05   49.614   197.84
2715.05   49.795   197.69
2725.05   49.964   197.53
2735.05   50.121   197.38
2745.05   50.266   197.22
2755.05   50.400   197.07
2765.05   50.521   196.92
2775.05   50.629   196.77
2785.05   50.726   196.62
2795.05   50.810   196.47
2805.05   50.882   196.32
2815.05   50.941   196.17
2825.05   50.987   196.02
2835.05   51.021   195.87
2845.05   51.042   195.72
2855.05   51.050   195.57
2865.05   51.045   195.42
2875.05   51.027   195.27
2885.05   50.996   195.13
2895.05   50.951   194.98
2905.05   50.893   194.83
2915.05   50.821   194.68






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 15:25:40



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