Double Star Calculator - Orbit

Orbital Elements for STF2783
WDS: STF2783 WDS ID/Discoverer
P: 1760.000 Orbital period (years)
a: 1.685 Semi-major axis (arcseconds)
i: 113.8 Inclination (degrees)
Ω: 48.3 Longitude of ascending node (degrees)
T: 1835.000 Epoch of periastron passage (year)
e: 0.22 Eccentricity
ω: 18.9 Longitude of periastron (degrees)
Start-Year: 1145.0 Year
End-Year: 2905.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2783
Position: 211404.90+581749.8 Epoch-2000 right ascension and declination
WDS-ID: 21141+5818 WDS designation
Discoverer Code: STF2783 Discover designation and components
ADS number: 14784 Aitken Double Star catalog
HD number: 202519 HD catalog number
Hipparcos number: 104812 Hipparcos catalog number
V1: 7.71 Magnitude of the primary
V2: 8.07 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2011 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Zir2014a Reference

Double Star Orbit for STF2783



WDS 6th Orbit including measures of STF2783

-- 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 STF2783
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.644   346.40
--------------------------
1145.00    1.527   206.42
1155.00    1.495   205.42
1165.00    1.462   204.38
1175.00    1.429   203.28
1185.00    1.395   202.14
1195.00    1.361   200.93
1205.00    1.326   199.67
1215.00    1.291   198.33
1225.00    1.255   196.92
1235.00    1.219   195.42
1245.00    1.183   193.84
1255.00    1.147   192.15
1265.00    1.111   190.36
1275.00    1.076   188.45
1285.00    1.040   186.41
1295.00    1.005   184.22
1305.00    0.971   181.88
1315.00    0.937   179.36
1325.00    0.905   176.67
1335.00    0.874   173.77
1345.00    0.844   170.67
1355.00    0.816   167.35
1365.00    0.790   163.81
1375.00    0.767   160.03
1385.00    0.746   156.04
1395.00    0.729   151.83
1405.00    0.714   147.44
1415.00    0.704   142.89
1425.00    0.697   138.22
1435.00    0.693   133.48
1445.00    0.694   128.73
1455.00    0.699   124.01
1465.00    0.707   119.38
1475.00    0.719   114.89
1485.00    0.735   110.56
1495.00    0.753   106.42
1505.00    0.774   102.50
1515.00    0.797    98.79
1525.00    0.823    95.30
1535.00    0.850    92.03
1545.00    0.878    88.96
1555.00    0.907    86.09
1565.00    0.937    83.40
1575.00    0.967    80.88
1585.00    0.997    78.50
1595.00    1.027    76.27
1605.00    1.057    74.17
1615.00    1.086    72.18
1625.00    1.115    70.29
1635.00    1.142    68.49
1645.00    1.168    66.78
1655.00    1.193    65.14
1665.00    1.216    63.56
1675.00    1.237    62.04
1685.00    1.257    60.57
1695.00    1.274    59.15
1705.00    1.290    57.75
1715.00    1.303    56.39
1725.00    1.313    55.06
1735.00    1.322    53.74
1745.00    1.327    52.44
1755.00    1.330    51.14
1765.00    1.330    49.85
1775.00    1.328    48.56
1785.00    1.323    47.26
1795.00    1.315    45.94
1805.00    1.304    44.61
1815.00    1.290    43.25
1825.00    1.274    41.86
1835.00    1.255    40.43
1845.00    1.234    38.96
1855.00    1.210    37.43
1865.00    1.184    35.83
1875.00    1.155    34.16
1885.00    1.125    32.40
1895.00    1.092    30.54
1905.00    1.058    28.56
1915.00    1.023    26.45
1925.00    0.987    24.19
1935.00    0.949    21.75
1945.00    0.912    19.10
1955.00    0.874    16.23
1965.00    0.836    13.11
1975.00    0.800     9.69
1985.00    0.764     5.94
1995.00    0.730     1.84
2005.00    0.699   357.36
2015.00    0.671   352.49
2025.00    0.647   347.22
2035.00    0.628   341.59
2045.00    0.613   335.64
2055.00    0.605   329.46
2065.00    0.602   323.17
2075.00    0.605   316.88
2085.00    0.615   310.73
2095.00    0.630   304.82
2105.00    0.651   299.24
2115.00    0.676   294.04
2125.00    0.705   289.24
2135.00    0.738   284.85
2145.00    0.774   280.84
2155.00    0.811   277.20
2165.00    0.851   273.89
2175.00    0.892   270.88
2185.00    0.934   268.13
2195.00    0.977   265.63
2205.00    1.020   263.33
2215.00    1.063   261.22
2225.00    1.106   259.28
2235.00    1.149   257.48
2245.00    1.192   255.81
2255.00    1.234   254.26
2265.00    1.276   252.81
2275.00    1.317   251.45
2285.00    1.357   250.17
2295.00    1.396   248.96
2305.00    1.435   247.82
2315.00    1.472   246.74
2325.00    1.509   245.71
2335.00    1.544   244.73
2345.00    1.579   243.79
2355.00    1.612   242.89
2365.00    1.644   242.03
2375.00    1.675   241.20
2385.00    1.705   240.40
2395.00    1.733   239.63
2405.00    1.760   238.88
2415.00    1.786   238.15
2425.00    1.811   237.44
2435.00    1.834   236.75
2445.00    1.856   236.08
2455.00    1.877   235.43
2465.00    1.897   234.79
2475.00    1.915   234.16
2485.00    1.932   233.54
2495.00    1.947   232.93
2505.00    1.962   232.33
2515.00    1.975   231.74
2525.00    1.986   231.16
2535.00    1.997   230.58
2545.00    2.006   230.01
2555.00    2.013   229.45
2565.00    2.020   228.88
2575.00    2.025   228.32
2585.00    2.029   227.77
2595.00    2.031   227.21
2605.00    2.032   226.66
2615.00    2.032   226.11
2625.00    2.031   225.55
2635.00    2.028   225.00
2645.00    2.024   224.44
2655.00    2.019   223.88
2665.00    2.013   223.32
2675.00    2.006   222.75
2685.00    1.997   222.18
2695.00    1.987   221.61
2705.00    1.976   221.02
2715.00    1.963   220.43
2725.00    1.950   219.84
2735.00    1.935   219.23
2745.00    1.919   218.62
2755.00    1.902   217.99
2765.00    1.884   217.35
2775.00    1.865   216.70
2785.00    1.845   216.04
2795.00    1.824   215.36
2805.00    1.802   214.66
2815.00    1.778   213.95
2825.00    1.754   213.22
2835.00    1.729   212.46
2845.00    1.702   211.68
2855.00    1.675   210.88
2865.00    1.647   210.06
2875.00    1.618   209.20
2885.00    1.589   208.31
2895.00    1.558   207.39






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 18:24:02



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