Double Star Calculator - Orbit

Orbital Elements for STF1872AB
WDS: STF1872AB WDS ID/Discoverer
P: 2035.000 Orbital period (years)
a: 5.23 Semi-major axis (arcseconds)
i: 19.4 Inclination (degrees)
Ω: 222.0 Longitude of ascending node (degrees)
T: 2887.700 Epoch of periastron passage (year)
e: 0.46 Eccentricity
ω: 357.0 Longitude of periastron (degrees)
Start-Year: 1007.4999999999999 Year
End-Year: 3042.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1872AB
Position: 144100.84+575728.1 Epoch-2000 right ascension and declination
WDS-ID: 14410+5757 WDS designation
Discoverer Code: STF1872AB Discover designation and components
ADS number: 9346 Aitken Double Star catalog
HD number: 129580 HD catalog number
Hipparcos number: 71782 Hipparcos catalog number
V1: 7.53 Magnitude of the primary
V2: 8.32 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: Kiy2010 Reference

Double Star Orbit for STF1872AB



WDS 6th Orbit including measures of STF1872AB

-- 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 STF1872AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    7.495    50.17
--------------------------
1007.50    3.402   288.27
1017.50    3.469   291.71
1027.50    3.539   295.01
1037.50    3.611   298.18
1047.50    3.685   301.23
1057.50    3.760   304.15
1067.50    3.837   306.96
1077.50    3.914   309.66
1087.50    3.993   312.25
1097.50    4.072   314.74
1107.50    4.152   317.14
1117.50    4.232   319.45
1127.50    4.312   321.67
1137.50    4.392   323.81
1147.50    4.473   325.87
1157.50    4.553   327.86
1167.50    4.632   329.78
1177.50    4.712   331.64
1187.50    4.791   333.43
1197.50    4.869   335.17
1207.50    4.947   336.85
1217.50    5.024   338.49
1227.50    5.100   340.07
1237.50    5.175   341.60
1247.50    5.250   343.09
1257.50    5.324   344.54
1267.50    5.397   345.95
1277.50    5.469   347.33
1287.50    5.540   348.67
1297.50    5.609   349.97
1307.50    5.678   351.24
1317.50    5.746   352.48
1327.50    5.813   353.70
1337.50    5.878   354.88
1347.50    5.943   356.04
1357.50    6.006   357.18
1367.50    6.068   358.29
1377.50    6.129   359.38
1387.50    6.189     0.45
1397.50    6.248     1.50
1407.50    6.305     2.52
1417.50    6.362     3.53
1427.50    6.417     4.53
1437.50    6.471     5.50
1447.50    6.523     6.46
1457.50    6.575     7.41
1467.50    6.625     8.34
1477.50    6.674     9.26
1487.50    6.722    10.16
1497.50    6.769    11.05
1507.50    6.814    11.93
1517.50    6.858    12.80
1527.50    6.901    13.65
1537.50    6.943    14.50
1547.50    6.983    15.33
1557.50    7.023    16.16
1567.50    7.061    16.98
1577.50    7.097    17.79
1587.50    7.133    18.59
1597.50    7.167    19.38
1607.50    7.201    20.16
1617.50    7.232    20.94
1627.50    7.263    21.71
1637.50    7.293    22.48
1647.50    7.321    23.24
1657.50    7.348    23.99
1667.50    7.374    24.74
1677.50    7.398    25.48
1687.50    7.422    26.22
1697.50    7.444    26.95
1707.50    7.465    27.68
1717.50    7.484    28.41
1727.50    7.503    29.13
1737.50    7.520    29.85
1747.50    7.536    30.56
1757.50    7.551    31.27
1767.50    7.565    31.98
1777.50    7.577    32.69
1787.50    7.588    33.40
1797.50    7.598    34.10
1807.50    7.607    34.80
1817.50    7.615    35.50
1827.50    7.621    36.20
1837.50    7.626    36.89
1847.50    7.630    37.59
1857.50    7.633    38.29
1867.50    7.634    38.98
1877.50    7.635    39.68
1887.50    7.634    40.37
1897.50    7.632    41.07
1907.50    7.628    41.76
1917.50    7.624    42.46
1927.50    7.618    43.16
1937.50    7.611    43.86
1947.50    7.603    44.56
1957.50    7.593    45.26
1967.50    7.583    45.96
1977.50    7.571    46.67
1987.50    7.558    47.38
1997.50    7.543    48.09
2007.50    7.528    48.80
2017.50    7.511    49.52
2027.50    7.493    50.24
2037.50    7.474    50.96
2047.50    7.453    51.69
2057.50    7.431    52.42
2067.50    7.408    53.16
2077.50    7.384    53.90
2087.50    7.359    54.65
2097.50    7.332    55.40
2107.50    7.304    56.15
2117.50    7.275    56.92
2127.50    7.245    57.68
2137.50    7.213    58.46
2147.50    7.180    59.24
2157.50    7.146    60.03
2167.50    7.111    60.83
2177.50    7.074    61.64
2187.50    7.036    62.45
2197.50    6.997    63.27
2207.50    6.956    64.11
2217.50    6.915    64.95
2227.50    6.872    65.80
2237.50    6.827    66.66
2247.50    6.782    67.54
2257.50    6.735    68.43
2267.50    6.687    69.33
2277.50    6.638    70.24
2287.50    6.587    71.17
2297.50    6.536    72.11
2307.50    6.483    73.06
2317.50    6.428    74.04
2327.50    6.373    75.03
2337.50    6.316    76.03
2347.50    6.258    77.06
2357.50    6.199    78.10
2367.50    6.138    79.17
2377.50    6.077    80.25
2387.50    6.014    81.36
2397.50    5.949    82.50
2407.50    5.884    83.65
2417.50    5.818    84.84
2427.50    5.750    86.05
2437.50    5.681    87.29
2447.50    5.611    88.56
2457.50    5.540    89.86
2467.50    5.468    91.20
2477.50    5.395    92.58
2487.50    5.320    93.99
2497.50    5.245    95.44
2507.50    5.169    96.93
2517.50    5.092    98.47
2527.50    5.014   100.06
2537.50    4.935   101.70
2547.50    4.856   103.39
2557.50    4.776   105.14
2567.50    4.695   106.94
2577.50    4.614   108.82
2587.50    4.532   110.75
2597.50    4.450   112.76
2607.50    4.368   114.85
2617.50    4.286   117.01
2627.50    4.203   119.26
2637.50    4.121   121.60
2647.50    4.040   124.04
2657.50    3.959   126.57
2667.50    3.878   129.21
2677.50    3.799   131.96
2687.50    3.721   134.83
2697.50    3.644   137.82
2707.50    3.569   140.93
2717.50    3.496   144.18
2727.50    3.425   147.57
2737.50    3.357   151.09
2747.50    3.292   154.76
2757.50    3.230   158.57
2767.50    3.171   162.53
2777.50    3.116   166.63
2787.50    3.065   170.88
2797.50    3.019   175.25
2807.50    2.977   179.76
2817.50    2.940   184.39
2827.50    2.908   189.14
2837.50    2.881   193.97
2847.50    2.859   198.89
2857.50    2.843   203.88
2867.50    2.831   208.92
2877.50    2.825   213.99
2887.50    2.824   219.07
2897.50    2.828   224.15
2907.50    2.837   229.20
2917.50    2.851   234.21
2927.50    2.870   239.17
2937.50    2.894   244.05
2947.50    2.922   248.84
2957.50    2.956   253.53
2967.50    2.994   258.11
2977.50    3.036   262.57
2987.50    3.082   266.91
2997.50    3.133   271.10
3007.50    3.187   275.16
3017.50    3.244   279.09
3027.50    3.305   282.87
3037.50    3.369   286.51






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 17:07:47



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