Double Star Calculator - Orbit

Orbital Elements for STF2267
WDS: STF2267 WDS ID/Discoverer
P: 1660.000 Orbital period (years)
a: 1.368 Semi-major axis (arcseconds)
i: 55.5 Inclination (degrees)
Ω: 37.3 Longitude of ascending node (degrees)
T: 2121.000 Epoch of periastron passage (year)
e: 0.69 Eccentricity
ω: 351.9 Longitude of periastron (degrees)
Start-Year: 1195.0 Year
End-Year: 2855.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF2267
Position: 180141.17+401041.9 Epoch-2000 right ascension and declination
WDS-ID: 18017+4011 WDS designation
Discoverer Code: STF2267 Discover designation and components
ADS number: 11001 Aitken Double Star catalog
HD number: 164941 HD catalog number
Hipparcos number: 88284 Hipparcos catalog number
V1: 8.41 Magnitude of the primary
V2: 8.84 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 STF2267



WDS 6th Orbit including measures of STF2267

-- 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 STF2267
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.470   282.38
--------------------------
1195.00    2.248   209.61
1205.00    2.256   209.94
1215.00    2.263   210.26
1225.00    2.269   210.59
1235.00    2.275   210.91
1245.00    2.280   211.23
1255.00    2.285   211.55
1265.00    2.289   211.87
1275.00    2.292   212.19
1285.00    2.295   212.50
1295.00    2.297   212.82
1305.00    2.299   213.13
1315.00    2.300   213.45
1325.00    2.300   213.76
1335.00    2.300   214.08
1345.00    2.299   214.39
1355.00    2.297   214.71
1365.00    2.295   215.02
1375.00    2.292   215.34
1385.00    2.289   215.66
1395.00    2.285   215.97
1405.00    2.280   216.29
1415.00    2.275   216.61
1425.00    2.269   216.94
1435.00    2.263   217.26
1445.00    2.255   217.59
1455.00    2.248   217.91
1465.00    2.239   218.24
1475.00    2.230   218.58
1485.00    2.220   218.91
1495.00    2.210   219.25
1505.00    2.198   219.60
1515.00    2.187   219.94
1525.00    2.174   220.29
1535.00    2.161   220.65
1545.00    2.147   221.00
1555.00    2.132   221.37
1565.00    2.117   221.74
1575.00    2.101   222.11
1585.00    2.084   222.49
1595.00    2.067   222.88
1605.00    2.049   223.27
1615.00    2.030   223.67
1625.00    2.010   224.08
1635.00    1.990   224.49
1645.00    1.968   224.92
1655.00    1.946   225.35
1665.00    1.924   225.80
1675.00    1.900   226.25
1685.00    1.875   226.72
1695.00    1.850   227.20
1705.00    1.824   227.69
1715.00    1.797   228.20
1725.00    1.769   228.72
1735.00    1.740   229.26
1745.00    1.711   229.82
1755.00    1.680   230.40
1765.00    1.649   231.00
1775.00    1.616   231.62
1785.00    1.583   232.28
1795.00    1.548   232.95
1805.00    1.513   233.66
1815.00    1.477   234.41
1825.00    1.439   235.19
1835.00    1.401   236.02
1845.00    1.361   236.89
1855.00    1.320   237.82
1865.00    1.278   238.80
1875.00    1.235   239.85
1885.00    1.191   240.99
1895.00    1.146   242.20
1905.00    1.099   243.52
1915.00    1.052   244.96
1925.00    1.003   246.54
1935.00    0.953   248.28
1945.00    0.902   250.22
1955.00    0.850   252.39
1965.00    0.797   254.84
1975.00    0.743   257.65
1985.00    0.689   260.90
1995.00    0.635   264.71
2005.00    0.581   269.23
2015.00    0.528   274.66
2025.00    0.478   281.27
2035.00    0.432   289.35
2045.00    0.392   299.21
2055.00    0.362   310.98
2065.00    0.345   324.38
2075.00    0.342   338.59
2085.00    0.352   352.51
2095.00    0.371     5.31
2105.00    0.393    16.72
2115.00    0.413    26.96
2125.00    0.425    36.41
2135.00    0.428    45.51
2145.00    0.424    54.65
2155.00    0.415    64.11
2165.00    0.405    74.03
2175.00    0.398    84.37
2185.00    0.397    94.93
2195.00    0.404   105.35
2205.00    0.418   115.24
2215.00    0.440   124.31
2225.00    0.469   132.39
2235.00    0.502   139.47
2245.00    0.540   145.61
2255.00    0.580   150.93
2265.00    0.622   155.54
2275.00    0.666   159.55
2285.00    0.711   163.07
2295.00    0.755   166.17
2305.00    0.800   168.92
2315.00    0.845   171.38
2325.00    0.890   173.59
2335.00    0.934   175.60
2345.00    0.977   177.42
2355.00    1.020   179.09
2365.00    1.063   180.62
2375.00    1.104   182.04
2385.00    1.145   183.36
2395.00    1.185   184.58
2405.00    1.225   185.73
2415.00    1.263   186.80
2425.00    1.301   187.82
2435.00    1.338   188.77
2445.00    1.374   189.68
2455.00    1.410   190.53
2465.00    1.445   191.35
2475.00    1.479   192.13
2485.00    1.512   192.87
2495.00    1.544   193.59
2505.00    1.576   194.27
2515.00    1.607   194.93
2525.00    1.637   195.56
2535.00    1.666   196.17
2545.00    1.695   196.76
2555.00    1.723   197.33
2565.00    1.750   197.88
2575.00    1.777   198.42
2585.00    1.802   198.94
2595.00    1.827   199.44
2605.00    1.852   199.93
2615.00    1.875   200.41
2625.00    1.898   200.88
2635.00    1.921   201.34
2645.00    1.942   201.78
2655.00    1.963   202.22
2665.00    1.984   202.65
2675.00    2.003   203.06
2685.00    2.022   203.47
2695.00    2.041   203.88
2705.00    2.058   204.27
2715.00    2.075   204.66
2725.00    2.092   205.05
2735.00    2.108   205.42
2745.00    2.123   205.80
2755.00    2.137   206.16
2765.00    2.151   206.52
2775.00    2.164   206.88
2785.00    2.177   207.23
2795.00    2.189   207.58
2805.00    2.200   207.93
2815.00    2.211   208.27
2825.00    2.221   208.61
2835.00    2.231   208.95
2845.00    2.240   209.28






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 17:46:22



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