Double Star Calculator - Orbit

Orbital Elements for STF2128
WDS: STF2128 WDS ID/Discoverer
P: 2294.494 Orbital period (years)
a: 14.30151 Semi-major axis (arcseconds)
i: 112.446 Inclination (degrees)
Ω: 20.339 Longitude of ascending node (degrees)
T: 2463.228 Epoch of periastron passage (year)
e: 0.62903 Eccentricity
ω: 92.278 Longitude of periastron (degrees)
Start-Year: 877.7528 Year
End-Year: 3172.2472 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2128
Position: 170318.66+593507.3 Epoch-2000 right ascension and declination
WDS-ID: 17033+5935 WDS designation
Discoverer Code: STF2128 Discover designation and components
ADS number: 10329 Aitken Double Star catalog
HD number: 154712 HD catalog number
Hipparcos number: 83451 Hipparcos catalog number
V1: 8.76 Magnitude of the primary
V2: 10.34 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: n Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for STF2128



WDS 6th Orbit including measures of STF2128

-- 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 STF2128
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   12.172    42.28
--------------------------
877.75   10.196   153.10
887.75   10.139   152.18
897.75   10.083   151.24
907.75   10.026   150.30
917.75    9.970   149.35
927.75    9.915   148.39
937.75    9.860   147.41
947.75    9.806   146.43
957.75    9.752   145.43
967.75    9.700   144.42
977.75    9.648   143.40
987.75    9.598   142.38
997.75    9.548   141.34
1007.75    9.500   140.29
1017.75    9.453   139.23
1027.75    9.408   138.16
1037.75    9.364   137.07
1047.75    9.321   135.98
1057.75    9.280   134.88
1067.75    9.241   133.77
1077.75    9.203   132.65
1087.75    9.167   131.52
1097.75    9.133   130.38
1107.75    9.101   129.24
1117.75    9.071   128.08
1127.75    9.043   126.92
1137.75    9.017   125.75
1147.75    8.993   124.58
1157.75    8.971   123.40
1167.75    8.952   122.21
1177.75    8.934   121.02
1187.75    8.919   119.83
1197.75    8.907   118.63
1207.75    8.896   117.43
1217.75    8.888   116.22
1227.75    8.883   115.01
1237.75    8.879   113.81
1247.75    8.879   112.60
1257.75    8.880   111.39
1267.75    8.884   110.18
1277.75    8.890   108.98
1287.75    8.899   107.77
1297.75    8.910   106.57
1307.75    8.924   105.37
1317.75    8.939   104.18
1327.75    8.957   102.99
1337.75    8.978   101.81
1347.75    9.000   100.63
1357.75    9.025    99.45
1367.75    9.052    98.29
1377.75    9.082    97.13
1387.75    9.113    95.98
1397.75    9.146    94.84
1407.75    9.182    93.70
1417.75    9.219    92.58
1427.75    9.258    91.46
1437.75    9.299    90.35
1447.75    9.342    89.26
1457.75    9.387    88.17
1467.75    9.433    87.10
1477.75    9.481    86.03
1487.75    9.530    84.98
1497.75    9.581    83.93
1507.75    9.633    82.90
1517.75    9.687    81.88
1527.75    9.742    80.87
1537.75    9.797    79.87
1547.75    9.854    78.89
1557.75    9.913    77.91
1567.75    9.972    76.95
1577.75   10.031    76.00
1587.75   10.092    75.05
1597.75   10.153    74.13
1607.75   10.215    73.21
1617.75   10.278    72.30
1627.75   10.341    71.40
1637.75   10.404    70.52
1647.75   10.468    69.64
1657.75   10.532    68.78
1667.75   10.596    67.93
1677.75   10.660    67.08
1687.75   10.724    66.25
1697.75   10.788    65.43
1707.75   10.851    64.61
1717.75   10.915    63.81
1727.75   10.978    63.01
1737.75   11.040    62.23
1747.75   11.102    61.45
1757.75   11.163    60.68
1767.75   11.224    59.92
1777.75   11.284    59.17
1787.75   11.342    58.42
1797.75   11.400    57.69
1807.75   11.457    56.96
1817.75   11.512    56.24
1827.75   11.566    55.52
1837.75   11.618    54.81
1847.75   11.669    54.11
1857.75   11.719    53.41
1867.75   11.766    52.72
1877.75   11.812    52.04
1887.75   11.855    51.36
1897.75   11.897    50.68
1907.75   11.936    50.01
1917.75   11.972    49.34
1927.75   12.006    48.68
1937.75   12.038    48.02
1947.75   12.066    47.37
1957.75   12.092    46.71
1967.75   12.114    46.06
1977.75   12.133    45.42
1987.75   12.148    44.77
1997.75   12.160    44.13
2007.75   12.168    43.48
2017.75   12.172    42.84
2027.75   12.171    42.20
2037.75   12.166    41.55
2047.75   12.156    40.91
2057.75   12.141    40.26
2067.75   12.121    39.62
2077.75   12.095    38.97
2087.75   12.064    38.31
2097.75   12.026    37.66
2107.75   11.982    37.00
2117.75   11.930    36.33
2127.75   11.872    35.66
2137.75   11.806    34.98
2147.75   11.732    34.29
2157.75   11.649    33.59
2167.75   11.557    32.89
2177.75   11.456    32.17
2187.75   11.344    31.43
2197.75   11.222    30.69
2207.75   11.088    29.92
2217.75   10.942    29.14
2227.75   10.783    28.33
2237.75   10.610    27.50
2247.75   10.422    26.63
2257.75   10.219    25.74
2267.75    9.998    24.81
2277.75    9.760    23.83
2287.75    9.502    22.81
2297.75    9.223    21.72
2307.75    8.923    20.56
2317.75    8.599    19.32
2327.75    8.249    17.98
2337.75    7.873    16.51
2347.75    7.468    14.90
2357.75    7.033    13.08
2367.75    6.568    11.02
2377.75    6.072     8.64
2387.75    5.545     5.81
2397.75    4.989     2.37
2407.75    4.412   358.04
2417.75    3.822   352.40
2427.75    3.239   344.69
2437.75    2.700   333.76
2447.75    2.268   318.04
2457.75    2.040   297.04
2467.75    2.098   274.25
2477.75    2.417   255.15
2487.75    2.899   241.46
2497.75    3.459   231.93
2507.75    4.044   225.12
2517.75    4.625   220.03
2527.75    5.187   216.06
2537.75    5.722   212.86
2547.75    6.225   210.19
2557.75    6.695   207.90
2567.75    7.132   205.91
2577.75    7.537   204.14
2587.75    7.911   202.54
2597.75    8.256   201.08
2607.75    8.574   199.74
2617.75    8.866   198.49
2627.75    9.135   197.31
2637.75    9.382   196.20
2647.75    9.608   195.14
2657.75    9.815   194.13
2667.75   10.004   193.16
2677.75   10.177   192.23
2687.75   10.335   191.32
2697.75   10.479   190.44
2707.75   10.609   189.59
2717.75   10.726   188.75
2727.75   10.832   187.93
2737.75   10.927   187.13
2747.75   11.012   186.33
2757.75   11.088   185.55
2767.75   11.154   184.78
2777.75   11.212   184.02
2787.75   11.262   183.27
2797.75   11.305   182.52
2807.75   11.340   181.78
2817.75   11.369   181.04
2827.75   11.392   180.30
2837.75   11.409   179.57
2847.75   11.421   178.84
2857.75   11.427   178.11
2867.75   11.429   177.38
2877.75   11.425   176.65
2887.75   11.418   175.92
2897.75   11.406   175.19
2907.75   11.391   174.46
2917.75   11.372   173.72
2927.75   11.349   172.98
2937.75   11.324   172.24
2947.75   11.295   171.50
2957.75   11.264   170.75
2967.75   11.229   170.00
2977.75   11.193   169.24
2987.75   11.154   168.47
2997.75   11.113   167.71
3007.75   11.070   166.93
3017.75   11.025   166.15
3027.75   10.979   165.37
3037.75   10.931   164.57
3047.75   10.881   163.77
3057.75   10.830   162.96
3067.75   10.779   162.15
3077.75   10.726   161.32
3087.75   10.672   160.49
3097.75   10.617   159.65
3107.75   10.562   158.80
3117.75   10.506   157.94
3127.75   10.450   157.07
3137.75   10.393   156.20
3147.75   10.336   155.31
3157.75   10.279   154.41
3167.75   10.222   153.51






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 17:33:14



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