Double Star Calculator - Orbit

Orbital Elements for STF1964CD

WDS:	STF1964CD	WDS ID/Discoverer
P:	1230.000	Orbital period (years)
a:	1.582	Semi-major axis (arcseconds)
i:	78.4	Inclination (degrees)
Ω:	15.9	Longitude of ascending node (degrees)
T:	1955.300	Epoch of periastron passage (year)
e:	0.0	Eccentricity
ω:	0.0	Longitude of periastron (degrees)
Start-Year:	1410.0	Year
End-Year:	2640.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1964CD
Position:	153814.14+361449.7	Epoch-2000 right ascension and declination
WDS-ID:	15382+3615	WDS designation
Discoverer Code:	STF1964CD	Discover designation and components
ADS number:	9731	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	76566	Hipparcos catalog number
V1:	8.06	Magnitude of the primary
V2:	9.02	Magnitude of the secondary
Equinox:		Equinox
Date:	1994	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:	Dru1995	Reference

Double Star Orbit for STF1964CD

WDS 6th Orbit including measures of STF1964CD

-- 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 STF1964CD

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.483    20.28
--------------------------
1410.00    1.487   200.18
1420.00    1.458   200.86
1430.00    1.426   201.56
1440.00    1.390   202.31
1450.00    1.351   203.09
1460.00    1.308   203.92
1470.00    1.263   204.82
1480.00    1.214   205.78
1490.00    1.163   206.82
1500.00    1.109   207.96
1510.00    1.052   209.22
1520.00    0.994   210.63
1530.00    0.933   212.22
1540.00    0.871   214.03
1550.00    0.808   216.13
1560.00    0.743   218.58
1570.00    0.679   221.50
1580.00    0.615   225.03
1590.00    0.552   229.37
1600.00    0.491   234.81
1610.00    0.435   241.70
1620.00    0.386   250.49
1630.00    0.348   261.51
1640.00    0.324   274.69
1650.00    0.319   289.10
1660.00    0.332   303.14
1670.00    0.363   315.43
1680.00    0.407   325.44
1690.00    0.459   333.34
1700.00    0.518   339.54
1710.00    0.579   344.46
1720.00    0.643   348.41
1730.00    0.707   351.65
1740.00    0.772   354.35
1750.00    0.836   356.63
1760.00    0.899   358.60
1770.00    0.960     0.30
1780.00    1.020     1.81
1790.00    1.077     3.15
1800.00    1.133     4.35
1810.00    1.186     5.45
1820.00    1.236     6.46
1830.00    1.283     7.38
1840.00    1.327     8.25
1850.00    1.368     9.06
1860.00    1.406     9.82
1870.00    1.440    10.55
1880.00    1.471    11.25
1890.00    1.498    11.91
1900.00    1.522    12.56
1910.00    1.542    13.19
1920.00    1.557    13.80
1930.00    1.569    14.40
1940.00    1.577    15.00
1950.00    1.581    15.59
1960.00    1.582    16.18
1970.00    1.578    16.77
1980.00    1.570    17.36
1990.00    1.558    17.96
2000.00    1.543    18.58
2010.00    1.523    19.20
2020.00    1.500    19.85
2030.00    1.473    20.51
2040.00    1.442    21.21
2050.00    1.408    21.93
2060.00    1.371    22.69
2070.00    1.330    23.50
2080.00    1.286    24.36
2090.00    1.239    25.29
2100.00    1.189    26.29
2110.00    1.136    27.38
2120.00    1.081    28.58
2130.00    1.023    29.91
2140.00    0.964    31.40
2150.00    0.902    33.10
2160.00    0.840    35.04
2170.00    0.776    37.30
2180.00    0.711    39.97
2190.00    0.647    43.17
2200.00    0.583    47.08
2210.00    0.521    51.93
2220.00    0.463    58.05
2230.00    0.410    65.83
2240.00    0.366    75.71
2250.00    0.334    87.86
2260.00    0.319   101.83
2270.00    0.323   116.27
2280.00    0.346   129.56
2290.00    0.384   140.72
2300.00    0.432   149.63
2310.00    0.488   156.63
2320.00    0.548   162.14
2330.00    0.611   166.54
2340.00    0.675   170.11
2350.00    0.740   173.06
2360.00    0.804   175.54
2370.00    0.867   177.65
2380.00    0.929   179.48
2390.00    0.990   181.08
2400.00    1.049   182.50
2410.00    1.105   183.77
2420.00    1.159   184.91
2430.00    1.211   185.96
2440.00    1.260   186.93
2450.00    1.306   187.82
2460.00    1.348   188.66
2470.00    1.388   189.45
2480.00    1.424   190.19
2490.00    1.456   190.90
2500.00    1.485   191.58
2510.00    1.511   192.24
2520.00    1.532   192.88
2530.00    1.550   193.50
2540.00    1.564   194.10
2550.00    1.574   194.70
2560.00    1.580   195.29
2570.00    1.582   195.88
2580.00    1.580   196.47
2590.00    1.574   197.06
2600.00    1.565   197.66
2610.00    1.551   198.27
2620.00    1.533   198.89
2630.00    1.512   199.52

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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 17:17:52