Double Star Calculator - Orbit

Orbital Elements for STF1245AB
WDS: STF1245AB WDS ID/Discoverer
P: 1959.000 Orbital period (years)
a: 7.8 Semi-major axis (arcseconds)
i: 95.5 Inclination (degrees)
Ω: 27.0 Longitude of ascending node (degrees)
T: 3052.412 Epoch of periastron passage (year)
e: 0.44 Eccentricity
ω: 68.9 Longitude of periastron (degrees)
Start-Year: 1045.5 Year
End-Year: 3004.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1245AB
Position: 083551.05+063713.9 Epoch-2000 right ascension and declination
WDS-ID: 08358+0637 WDS designation
Discoverer Code: STF1245AB Discover designation and components
ADS number: 6886 Aitken Double Star catalog
HD number: 72945 HD catalog number
Hipparcos number: 42172 Hipparcos catalog number
V1: 5.98 Magnitude of the primary
V2: 7.16 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: Bdt2021b Reference

Double Star Orbit for STF1245AB



WDS 6th Orbit including measures of STF1245AB

-- 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 STF1245AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    4.803   195.28
--------------------------
1045.50    3.238    21.68
1055.50    2.925    20.67
1065.50    2.597    19.40
1075.50    2.255    17.76
1085.50    1.904    15.52
1095.50    1.545    12.25
1105.50    1.186     6.99
1115.50    0.838   357.27
1125.50    0.540   335.51
1135.50    0.432   289.52
1145.50    0.622   250.84
1155.50    0.943   234.21
1165.50    1.298   226.33
1175.50    1.660   221.86
1185.50    2.021   218.99
1195.50    2.377   216.99
1205.50    2.724   215.50
1215.50    3.063   214.35
1225.50    3.392   213.42
1235.50    3.709   212.66
1245.50    4.015   212.01
1255.50    4.309   211.46
1265.50    4.591   210.97
1275.50    4.860   210.54
1285.50    5.118   210.15
1295.50    5.364   209.80
1305.50    5.598   209.48
1315.50    5.820   209.19
1325.50    6.031   208.91
1335.50    6.231   208.66
1345.50    6.419   208.42
1355.50    6.597   208.19
1365.50    6.765   207.97
1375.50    6.923   207.77
1385.50    7.070   207.57
1395.50    7.209   207.38
1405.50    7.337   207.20
1415.50    7.457   207.02
1425.50    7.569   206.85
1435.50    7.672   206.69
1445.50    7.766   206.53
1455.50    7.853   206.37
1465.50    7.932   206.21
1475.50    8.003   206.06
1485.50    8.068   205.91
1495.50    8.125   205.77
1505.50    8.175   205.62
1515.50    8.219   205.48
1525.50    8.256   205.34
1535.50    8.288   205.20
1545.50    8.313   205.06
1555.50    8.332   204.92
1565.50    8.345   204.78
1575.50    8.353   204.64
1585.50    8.356   204.50
1595.50    8.353   204.37
1605.50    8.345   204.23
1615.50    8.333   204.09
1625.50    8.315   203.95
1635.50    8.293   203.81
1645.50    8.266   203.67
1655.50    8.235   203.53
1665.50    8.199   203.39
1675.50    8.159   203.24
1685.50    8.116   203.10
1695.50    8.068   202.95
1705.50    8.016   202.80
1715.50    7.960   202.65
1725.50    7.901   202.50
1735.50    7.839   202.34
1745.50    7.772   202.19
1755.50    7.703   202.02
1765.50    7.630   201.86
1775.50    7.553   201.69
1785.50    7.474   201.52
1795.50    7.392   201.35
1805.50    7.306   201.17
1815.50    7.218   200.99
1825.50    7.127   200.80
1835.50    7.033   200.61
1845.50    6.936   200.41
1855.50    6.837   200.21
1865.50    6.736   200.00
1875.50    6.631   199.78
1885.50    6.525   199.56
1895.50    6.416   199.33
1905.50    6.305   199.09
1915.50    6.191   198.85
1925.50    6.076   198.59
1935.50    5.958   198.33
1945.50    5.838   198.05
1955.50    5.717   197.76
1965.50    5.593   197.46
1975.50    5.468   197.15
1985.50    5.341   196.82
1995.50    5.212   196.47
2005.50    5.082   196.11
2015.50    4.950   195.73
2025.50    4.817   195.32
2035.50    4.682   194.90
2045.50    4.546   194.44
2055.50    4.408   193.96
2065.50    4.270   193.45
2075.50    4.130   192.91
2085.50    3.989   192.32
2095.50    3.848   191.70
2105.50    3.705   191.02
2115.50    3.562   190.29
2125.50    3.418   189.50
2135.50    3.274   188.64
2145.50    3.129   187.70
2155.50    2.984   186.67
2165.50    2.840   185.54
2175.50    2.695   184.28
2185.50    2.551   182.88
2195.50    2.408   181.31
2205.50    2.266   179.55
2215.50    2.125   177.55
2225.50    1.987   175.27
2235.50    1.852   172.65
2245.50    1.720   169.63
2255.50    1.593   166.12
2265.50    1.473   162.02
2275.50    1.361   157.21
2285.50    1.260   151.59
2295.50    1.172   145.07
2305.50    1.102   137.60
2315.50    1.052   129.27
2325.50    1.026   120.32
2335.50    1.025   111.13
2345.50    1.050   102.16
2355.50    1.099    93.79
2365.50    1.169    86.28
2375.50    1.255    79.70
2385.50    1.356    74.04
2395.50    1.467    69.20
2405.50    1.587    65.06
2415.50    1.713    61.51
2425.50    1.843    58.47
2435.50    1.978    55.83
2445.50    2.115    53.53
2455.50    2.254    51.51
2465.50    2.395    49.72
2475.50    2.536    48.14
2485.50    2.678    46.72
2495.50    2.820    45.45
2505.50    2.962    44.30
2515.50    3.103    43.25
2525.50    3.243    42.30
2535.50    3.383    41.42
2545.50    3.521    40.61
2555.50    3.657    39.86
2565.50    3.792    39.17
2575.50    3.925    38.52
2585.50    4.056    37.92
2595.50    4.184    37.35
2605.50    4.310    36.82
2615.50    4.433    36.31
2625.50    4.553    35.84
2635.50    4.670    35.38
2645.50    4.783    34.95
2655.50    4.893    34.54
2665.50    4.999    34.15
2675.50    5.100    33.77
2685.50    5.197    33.41
2695.50    5.289    33.06
2705.50    5.376    32.72
2715.50    5.457    32.39
2725.50    5.533    32.07
2735.50    5.602    31.76
2745.50    5.665    31.46
2755.50    5.721    31.16
2765.50    5.769    30.87
2775.50    5.810    30.58
2785.50    5.842    30.30
2795.50    5.865    30.02
2805.50    5.879    29.74
2815.50    5.882    29.46
2825.50    5.876    29.19
2835.50    5.857    28.91
2845.50    5.827    28.62
2855.50    5.785    28.34
2865.50    5.729    28.05
2875.50    5.659    27.75
2885.50    5.575    27.45
2895.50    5.475    27.13
2905.50    5.359    26.80
2915.50    5.226    26.46
2925.50    5.076    26.10
2935.50    4.908    25.71
2945.50    4.721    25.30
2955.50    4.516    24.85
2965.50    4.292    24.35
2975.50    4.048    23.80
2985.50    3.786    23.17
2995.50    3.505    22.44






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 16:08:45



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