Double Star Calculator - Orbit

Orbital Elements for STF2957AB
WDS: STF2957AB WDS ID/Discoverer
P: 2068.524 Orbital period (years)
a: 9.21287 Semi-major axis (arcseconds)
i: 91.378 Inclination (degrees)
Ω: 47.402 Longitude of ascending node (degrees)
T: 1697.005 Epoch of periastron passage (year)
e: 0.78625 Eccentricity
ω: 97.335 Longitude of periastron (degrees)
Start-Year: 990.7381 Year
End-Year: 3059.2619 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2957AB
Position: 225623.64+172708.6 Epoch-2000 right ascension and declination
WDS-ID: 22564+1727 WDS designation
Discoverer Code: STF2957AB Discover designation and components
ADS number: 16379 Aitken Double Star catalog
HD number: 216863 HD catalog number
Hipparcos number: 113280 Hipparcos catalog number
V1: 9.20 Magnitude of the primary
V2: 10.88 Magnitude of the secondary
Equinox: Equinox
Date: 2008 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: Izm2019 Reference

Double Star Orbit for STF2957AB



WDS 6th Orbit including measures of STF2957AB

-- 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 STF2957AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.380   224.34
--------------------------
990.74    4.979    51.41
1000.74    5.053    51.32
1010.74    5.127    51.24
1020.74    5.199    51.16
1030.74    5.270    51.08
1040.74    5.340    51.00
1050.74    5.409    50.92
1060.74    5.477    50.85
1070.74    5.544    50.78
1080.74    5.609    50.71
1090.74    5.673    50.64
1100.74    5.735    50.57
1110.74    5.797    50.50
1120.74    5.856    50.44
1130.74    5.915    50.38
1140.74    5.972    50.31
1150.74    6.027    50.25
1160.74    6.080    50.19
1170.74    6.132    50.13
1180.74    6.182    50.08
1190.74    6.231    50.02
1200.74    6.277    49.96
1210.74    6.322    49.91
1220.74    6.364    49.85
1230.74    6.405    49.80
1240.74    6.443    49.75
1250.74    6.479    49.69
1260.74    6.512    49.64
1270.74    6.544    49.59
1280.74    6.572    49.54
1290.74    6.598    49.49
1300.74    6.621    49.44
1310.74    6.642    49.39
1320.74    6.659    49.34
1330.74    6.673    49.29
1340.74    6.684    49.24
1350.74    6.691    49.19
1360.74    6.695    49.14
1370.74    6.695    49.09
1380.74    6.690    49.04
1390.74    6.682    48.99
1400.74    6.669    48.95
1410.74    6.651    48.90
1420.74    6.628    48.85
1430.74    6.599    48.80
1440.74    6.565    48.75
1450.74    6.525    48.69
1460.74    6.478    48.64
1470.74    6.424    48.59
1480.74    6.363    48.54
1490.74    6.293    48.48
1500.74    6.215    48.43
1510.74    6.126    48.37
1520.74    6.028    48.31
1530.74    5.917    48.25
1540.74    5.794    48.18
1550.74    5.657    48.12
1560.74    5.503    48.05
1570.74    5.332    47.97
1580.74    5.141    47.89
1590.74    4.928    47.80
1600.74    4.687    47.71
1610.74    4.416    47.60
1620.74    4.110    47.48
1630.74    3.760    47.34
1640.74    3.360    47.17
1650.74    2.898    46.94
1660.74    2.363    46.62
1670.74    1.743    46.09
1680.74    1.035    44.89
1690.74    0.257    36.73
1700.74    0.551   232.17
1710.74    1.302   229.15
1720.74    1.957   228.30
1730.74    2.502   227.85
1740.74    2.949   227.55
1750.74    3.314   227.33
1760.74    3.613   227.15
1770.74    3.860   226.99
1780.74    4.064   226.85
1790.74    4.232   226.72
1800.74    4.372   226.61
1810.74    4.487   226.49
1820.74    4.581   226.39
1830.74    4.657   226.28
1840.74    4.718   226.18
1850.74    4.765   226.09
1860.74    4.800   225.99
1870.74    4.824   225.90
1880.74    4.838   225.80
1890.74    4.844   225.71
1900.74    4.843   225.61
1910.74    4.834   225.52
1920.74    4.819   225.43
1930.74    4.798   225.33
1940.74    4.772   225.24
1950.74    4.741   225.14
1960.74    4.705   225.04
1970.74    4.665   224.94
1980.74    4.622   224.84
1990.74    4.575   224.74
2000.74    4.524   224.63
2010.74    4.470   224.52
2020.74    4.414   224.41
2030.74    4.355   224.30
2040.74    4.293   224.18
2050.74    4.229   224.06
2060.74    4.163   223.93
2070.74    4.094   223.80
2080.74    4.024   223.67
2090.74    3.952   223.53
2100.74    3.878   223.39
2110.74    3.802   223.24
2120.74    3.725   223.08
2130.74    3.647   222.92
2140.74    3.567   222.75
2150.74    3.486   222.58
2160.74    3.403   222.39
2170.74    3.320   222.20
2180.74    3.235   221.99
2190.74    3.150   221.78
2200.74    3.063   221.55
2210.74    2.976   221.31
2220.74    2.888   221.06
2230.74    2.799   220.78
2240.74    2.709   220.49
2250.74    2.619   220.18
2260.74    2.528   219.85
2270.74    2.436   219.50
2280.74    2.344   219.11
2290.74    2.252   218.70
2300.74    2.159   218.25
2310.74    2.066   217.75
2320.74    1.972   217.21
2330.74    1.878   216.62
2340.74    1.784   215.97
2350.74    1.690   215.24
2360.74    1.595   214.42
2370.74    1.501   213.51
2380.74    1.407   212.47
2390.74    1.313   211.28
2400.74    1.220   209.91
2410.74    1.127   208.31
2420.74    1.035   206.43
2430.74    0.943   204.18
2440.74    0.854   201.45
2450.74    0.767   198.10
2460.74    0.683   193.90
2470.74    0.603   188.57
2480.74    0.530   181.69
2490.74    0.467   172.80
2500.74    0.419   161.51
2510.74    0.390   147.94
2520.74    0.386   133.18
2530.74    0.406   119.02
2540.74    0.449   106.89
2550.74    0.507    97.20
2560.74    0.577    89.68
2570.74    0.655    83.86
2580.74    0.737    79.31
2590.74    0.824    75.69
2600.74    0.913    72.77
2610.74    1.003    70.37
2620.74    1.095    68.37
2630.74    1.188    66.68
2640.74    1.281    65.24
2650.74    1.375    64.00
2660.74    1.470    62.91
2670.74    1.564    61.96
2680.74    1.659    61.11
2690.74    1.754    60.36
2700.74    1.849    59.68
2710.74    1.943    59.07
2720.74    2.038    58.51
2730.74    2.132    58.01
2740.74    2.227    57.55
2750.74    2.321    57.12
2760.74    2.414    56.73
2770.74    2.508    56.37
2780.74    2.601    56.03
2790.74    2.694    55.72
2800.74    2.786    55.43
2810.74    2.878    55.15
2820.74    2.970    54.90
2830.74    3.061    54.65
2840.74    3.152    54.43
2850.74    3.242    54.21
2860.74    3.332    54.01
2870.74    3.421    53.82
2880.74    3.510    53.63
2890.74    3.598    53.46
2900.74    3.686    53.29
2910.74    3.773    53.14
2920.74    3.859    52.99
2930.74    3.945    52.84
2940.74    4.030    52.70
2950.74    4.114    52.57
2960.74    4.198    52.44
2970.74    4.281    52.32
2980.74    4.363    52.20
2990.74    4.444    52.09
3000.74    4.525    51.98
3010.74    4.605    51.88
3020.74    4.684    51.77
3030.74    4.762    51.68
3040.74    4.839    51.58
3050.74    4.915    51.49






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 18:45:30



www.stella-vega.de