Double Star Calculator - Orbit

Orbital Elements for A961

WDS:	A961	WDS ID/Discoverer
P:	143.100	Orbital period (years)
a:	0.294	Semi-major axis (arcseconds)
i:	145.4	Inclination (degrees)
Ω:	150.0	Longitude of ascending node (degrees)
T:	2038.100	Epoch of periastron passage (year)
e:	0.571	Eccentricity
ω:	15.6	Longitude of periastron (degrees)
Start-Year:	1953.45	Year
End-Year:	2096.55	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A961
Position:	022010.41+294842.2	Epoch-2000 right ascension and declination
WDS-ID:	02202+2949	WDS designation
Discoverer Code:	A961	Discover designation and components
ADS number:	1780	Aitken Double Star catalog
HD number:	14394	HD catalog number
Hipparcos number:	10892	Hipparcos catalog number
V1:	9.31	Magnitude of the primary
V2:	8.94	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2003	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:	Nov2007b	Reference

Double Star Orbit for A961

WDS 6th Orbit including measures of A961

-- 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 A961

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.168   223.07
--------------------------
1953.45    0.450   326.33
1954.45    0.452   325.61
1955.45    0.453   324.89
1956.45    0.454   324.17
1957.45    0.455   323.46
1958.45    0.456   322.76
1959.45    0.456   322.05
1960.45    0.457   321.34
1961.45    0.457   320.64
1962.45    0.457   319.94
1963.45    0.457   319.24
1964.45    0.457   318.53
1965.45    0.457   317.83
1966.45    0.457   317.13
1967.45    0.456   316.42
1968.45    0.455   315.71
1969.45    0.454   315.00
1970.45    0.453   314.29
1971.45    0.452   313.57
1972.45    0.450   312.85
1973.45    0.449   312.12
1974.45    0.447   311.39
1975.45    0.445   310.65
1976.45    0.443   309.91
1977.45    0.441   309.15
1978.45    0.439   308.39
1979.45    0.436   307.63
1980.45    0.433   306.85
1981.45    0.431   306.06
1982.45    0.428   305.26
1983.45    0.425   304.45
1984.45    0.421   303.63
1985.45    0.418   302.80
1986.45    0.414   301.95
1987.45    0.411   301.09
1988.45    0.407   300.21
1989.45    0.403   299.31
1990.45    0.399   298.39
1991.45    0.394   297.46
1992.45    0.390   296.50
1993.45    0.385   295.52
1994.45    0.380   294.52
1995.45    0.375   293.49
1996.45    0.370   292.43
1997.45    0.365   291.35
1998.45    0.360   290.23
1999.45    0.354   289.07
2000.45    0.348   287.88
2001.45    0.343   286.65
2002.45    0.337   285.38
2003.45    0.330   284.05
2004.45    0.324   282.68
2005.45    0.318   281.26
2006.45    0.311   279.77
2007.45    0.305   278.22
2008.45    0.298   276.60
2009.45    0.291   274.90
2010.45    0.284   273.12
2011.45    0.277   271.25
2012.45    0.269   269.28
2013.45    0.262   267.20
2014.45    0.255   265.00
2015.45    0.247   262.67
2016.45    0.240   260.19
2017.45    0.232   257.55
2018.45    0.225   254.73
2019.45    0.217   251.72
2020.45    0.210   248.49
2021.45    0.202   245.03
2022.45    0.195   241.31
2023.45    0.188   237.30
2024.45    0.181   232.98
2025.45    0.175   228.33
2026.45    0.168   223.33
2027.45    0.162   217.95
2028.45    0.157   212.17
2029.45    0.152   206.00
2030.45    0.147   199.43
2031.45    0.143   192.46
2032.45    0.140   185.12
2033.45    0.137   177.41
2034.45    0.134   169.35
2035.45    0.131   160.95
2036.45    0.128   152.21
2037.45    0.126   143.14
2038.45    0.124   133.73
2039.45    0.122   124.02
2040.45    0.121   114.10
2041.45    0.121   104.10
2042.45    0.123    94.22
2043.45    0.125    84.65
2044.45    0.130    75.60
2045.45    0.135    67.21
2046.45    0.142    59.53
2047.45    0.149    52.60
2048.45    0.158    46.36
2049.45    0.167    40.77
2050.45    0.176    35.77
2051.45    0.186    31.26
2052.45    0.195    27.21
2053.45    0.205    23.54
2054.45    0.215    20.20
2055.45    0.224    17.14
2056.45    0.234    14.34
2057.45    0.243    11.76
2058.45    0.253     9.37
2059.45    0.262     7.15
2060.45    0.270     5.07
2061.45    0.279     3.12
2062.45    0.288     1.29
2063.45    0.296   359.56
2064.45    0.304   357.93
2065.45    0.312   356.37
2066.45    0.319   354.90
2067.45    0.326   353.48
2068.45    0.334   352.14
2069.45    0.340   350.84
2070.45    0.347   349.60
2071.45    0.354   348.40
2072.45    0.360   347.25
2073.45    0.366   346.13
2074.45    0.372   345.05
2075.45    0.377   344.00
2076.45    0.383   342.98
2077.45    0.388   341.99
2078.45    0.393   341.03
2079.45    0.398   340.08
2080.45    0.402   339.17
2081.45    0.406   338.27
2082.45    0.411   337.39
2083.45    0.415   336.52
2084.45    0.418   335.68
2085.45    0.422   334.84
2086.45    0.426   334.03
2087.45    0.429   333.22
2088.45    0.432   332.43
2089.45    0.435   331.64
2090.45    0.437   330.87
2091.45    0.440   330.11
2092.45    0.442   329.35
2093.45    0.444   328.61
2094.45    0.446   327.87
2095.45    0.448   327.13
2096.45    0.450   326.40

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 14:59:32