Double Star Calculator - Orbit

Orbital Elements for STF2153

WDS:	STF2153	WDS ID/Discoverer
P:	1205.183	Orbital period (years)
a:	3.32399	Semi-major axis (arcseconds)
i:	102.961	Inclination (degrees)
Ω:	102.94	Longitude of ascending node (degrees)
T:	1757.600	Epoch of periastron passage (year)
e:	0.66855	Eccentricity
ω:	107.217	Longitude of periastron (degrees)
Start-Year:	1422.4084	Year
End-Year:	2627.5915999999997	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2153
Position:	171753.03+491818.5	Epoch-2000 right ascension and declination
WDS-ID:	17179+4918	WDS designation
Discoverer Code:	STF2153	Discover designation and components
ADS number:	10460	Aitken Double Star catalog
HD number:	156963	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.36	Magnitude of the primary
V2:	9.70	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 STF2153

WDS 6th Orbit including measures of STF2153

-- 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 STF2153

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.412   241.94
--------------------------
1422.41    3.206   117.46
1432.41    3.225   116.93
1442.41    3.242   116.40
1452.41    3.255   115.88
1462.41    3.265   115.36
1472.41    3.271   114.85
1482.41    3.274   114.33
1492.41    3.274   113.82
1502.41    3.269   113.31
1512.41    3.260   112.79
1522.41    3.246   112.27
1532.41    3.227   111.74
1542.41    3.203   111.21
1552.41    3.174   110.67
1562.41    3.138   110.12
1572.41    3.096   109.55
1582.41    3.047   108.97
1592.41    2.989   108.36
1602.41    2.924   107.73
1612.41    2.849   107.07
1622.41    2.763   106.37
1632.41    2.667   105.63
1642.41    2.557   104.82
1652.41    2.433   103.94
1662.41    2.293   102.95
1672.41    2.135   101.83
1682.41    1.956   100.51
1692.41    1.754    98.91
1702.41    1.525    96.86
1712.41    1.266    94.02
1722.41    0.977    89.59
1732.41    0.663    81.12
1742.41    0.357    57.38
1752.41    0.279   345.06
1762.41    0.548   306.79
1772.41    0.855   295.10
1782.41    1.126   289.43
1792.41    1.347   285.83
1802.41    1.521   283.15
1812.41    1.654   280.97
1822.41    1.755   279.08
1832.41    1.828   277.37
1842.41    1.879   275.77
1852.41    1.912   274.24
1862.41    1.930   272.75
1872.41    1.937   271.28
1882.41    1.933   269.81
1892.41    1.921   268.33
1902.41    1.902   266.82
1912.41    1.877   265.28
1922.41    1.847   263.69
1932.41    1.814   262.05
1942.41    1.777   260.34
1952.41    1.737   258.56
1962.41    1.695   256.69
1972.41    1.652   254.72
1982.41    1.607   252.65
1992.41    1.562   250.46
2002.41    1.518   248.14
2012.41    1.473   245.67
2022.41    1.429   243.06
2032.41    1.387   240.28
2042.41    1.346   237.33
2052.41    1.307   234.20
2062.41    1.272   230.89
2072.41    1.239   227.39
2082.41    1.210   223.71
2092.41    1.185   219.87
2102.41    1.164   215.87
2112.41    1.148   211.75
2122.41    1.137   207.53
2132.41    1.132   203.25
2142.41    1.132   198.95
2152.41    1.137   194.67
2162.41    1.148   190.45
2172.41    1.164   186.32
2182.41    1.185   182.33
2192.41    1.211   178.49
2202.41    1.241   174.82
2212.41    1.275   171.34
2222.41    1.313   168.05
2232.41    1.354   164.95
2242.41    1.398   162.04
2252.41    1.444   159.32
2262.41    1.492   156.76
2272.41    1.543   154.37
2282.41    1.594   152.13
2292.41    1.648   150.03
2302.41    1.702   148.07
2312.41    1.757   146.23
2322.41    1.813   144.50
2332.41    1.869   142.88
2342.41    1.926   141.35
2352.41    1.982   139.90
2362.41    2.039   138.54
2372.41    2.096   137.25
2382.41    2.152   136.03
2392.41    2.208   134.87
2402.41    2.264   133.77
2412.41    2.319   132.73
2422.41    2.374   131.73
2432.41    2.427   130.77
2442.41    2.480   129.86
2452.41    2.532   128.98
2462.41    2.583   128.14
2472.41    2.633   127.33
2482.41    2.682   126.55
2492.41    2.730   125.80
2502.41    2.776   125.07
2512.41    2.821   124.37
2522.41    2.864   123.69
2532.41    2.906   123.03
2542.41    2.946   122.38
2552.41    2.984   121.76
2562.41    3.021   121.15
2572.41    3.055   120.55
2582.41    3.088   119.97
2592.41    3.118   119.39
2602.41    3.146   118.83
2612.41    3.172   118.28
2622.41    3.195   117.74

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 17:36:19