Double Star Calculator - Orbit

Orbital Elements for STF3107AB

WDS:	STF3107AB	WDS ID/Discoverer
P:	1147.320	Orbital period (years)
a:	2.46798	Semi-major axis (arcseconds)
i:	110.883	Inclination (degrees)
Ω:	118.427	Longitude of ascending node (degrees)
T:	1779.955	Epoch of periastron passage (year)
e:	0.70657	Eccentricity
ω:	283.846	Longitude of periastron (degrees)
Start-Year:	1451.3398499999998	Year
End-Year:	2598.66015	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF3107AB
Position:	165850.27+035801.3	Epoch-2000 right ascension and declination
WDS-ID:	16588+0358	WDS designation
Discoverer Code:	STF3107AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	153332	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.08	Magnitude of the primary
V2:	9.30	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	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:	Izm2019	Reference

Double Star Orbit for STF3107AB

WDS 6th Orbit including measures of STF3107AB

-- 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 STF3107AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.405    67.52
--------------------------
1451.34    2.326   325.95
1461.34    2.336   325.06
1471.34    2.345   324.18
1481.34    2.352   323.31
1491.34    2.357   322.44
1501.34    2.359   321.57
1511.34    2.360   320.70
1521.34    2.358   319.84
1531.34    2.354   318.97
1541.34    2.347   318.10
1551.34    2.337   317.22
1561.34    2.324   316.33
1571.34    2.308   315.43
1581.34    2.288   314.52
1591.34    2.264   313.59
1601.34    2.236   312.64
1611.34    2.203   311.66
1621.34    2.165   310.65
1631.34    2.121   309.60
1641.34    2.070   308.50
1651.34    2.013   307.35
1661.34    1.947   306.12
1671.34    1.873   304.80
1681.34    1.788   303.36
1691.34    1.692   301.77
1701.34    1.581   299.97
1711.34    1.454   297.88
1721.34    1.309   295.35
1731.34    1.141   292.13
1741.34    0.947   287.68
1751.34    0.725   280.70
1761.34    0.484   266.99
1771.34    0.283   229.76
1781.34    0.328   167.08
1791.34    0.550   139.88
1801.34    0.769   128.58
1811.34    0.949   122.02
1821.34    1.089   117.38
1831.34    1.197   113.70
1841.34    1.279   110.56
1851.34    1.341   107.75
1861.34    1.389   105.17
1871.34    1.424   102.73
1881.34    1.449   100.40
1891.34    1.467    98.13
1901.34    1.478    95.91
1911.34    1.485    93.71
1921.34    1.487    91.53
1931.34    1.486    89.35
1941.34    1.482    87.16
1951.34    1.476    84.96
1961.34    1.468    82.73
1971.34    1.460    80.48
1981.34    1.450    78.21
1991.34    1.440    75.90
2001.34    1.430    73.56
2011.34    1.420    71.18
2021.34    1.410    68.77
2031.34    1.400    66.33
2041.34    1.392    63.86
2051.34    1.384    61.35
2061.34    1.377    58.82
2071.34    1.371    56.27
2081.34    1.367    53.70
2091.34    1.363    51.11
2101.34    1.362    48.51
2111.34    1.362    45.91
2121.34    1.363    43.31
2131.34    1.366    40.72
2141.34    1.370    38.14
2151.34    1.377    35.59
2161.34    1.384    33.06
2171.34    1.394    30.56
2181.34    1.405    28.10
2191.34    1.417    25.68
2201.34    1.431    23.30
2211.34    1.446    20.97
2221.34    1.463    18.69
2231.34    1.481    16.47
2241.34    1.500    14.30
2251.34    1.521    12.18
2261.34    1.542    10.13
2271.34    1.564     8.13
2281.34    1.587     6.18
2291.34    1.611     4.30
2301.34    1.636     2.47
2311.34    1.661     0.69
2321.34    1.687   358.97
2331.34    1.713   357.30
2341.34    1.739   355.68
2351.34    1.766   354.12
2361.34    1.793   352.59
2371.34    1.820   351.12
2381.34    1.848   349.68
2391.34    1.875   348.29
2401.34    1.902   346.94
2411.34    1.929   345.63
2421.34    1.956   344.35
2431.34    1.983   343.11
2441.34    2.009   341.90
2451.34    2.035   340.72
2461.34    2.060   339.57
2471.34    2.085   338.44
2481.34    2.109   337.35
2491.34    2.133   336.28
2501.34    2.156   335.23
2511.34    2.178   334.20
2521.34    2.199   333.20
2531.34    2.220   332.21
2541.34    2.239   331.24
2551.34    2.257   330.28
2561.34    2.274   329.34
2571.34    2.290   328.42
2581.34    2.304   327.51
2591.34    2.317   326.60

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 17:32:43