Double Star Calculator - Orbit

Orbital Elements for A957

WDS:	A957	WDS ID/Discoverer
P:	219.970	Orbital period (years)
a:	0.471	Semi-major axis (arcseconds)
i:	125.3	Inclination (degrees)
Ω:	107.7	Longitude of ascending node (degrees)
T:	1870.070	Epoch of periastron passage (year)
e:	0.462	Eccentricity
ω:	250.1	Longitude of periastron (degrees)
Start-Year:	1915.015	Year
End-Year:	2134.985	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A957
Position:	020448.71+603022.7	Epoch-2000 right ascension and declination
WDS-ID:	02048+6030	WDS designation
Discoverer Code:	A957	Discover designation and components
ADS number:	1632	Aitken Double Star catalog
HD number:	12529	HD catalog number
Hipparcos number:	9704	Hipparcos catalog number
V1:	8.52	Magnitude of the primary
V2:	10.48	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2012	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	FMR2020a	Reference

Double Star Orbit for A957

WDS 6th Orbit including measures of A957

-- 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 A957

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.367   353.16
--------------------------
1915.02    0.495    98.38
1916.02    0.498    97.62
1917.02    0.501    96.88
1918.02    0.504    96.14
1919.02    0.507    95.41
1920.02    0.510    94.69
1921.02    0.512    93.98
1922.02    0.514    93.27
1923.02    0.516    92.57
1924.02    0.518    91.88
1925.02    0.520    91.19
1926.02    0.521    90.50
1927.02    0.522    89.81
1928.02    0.523    89.13
1929.02    0.524    88.45
1930.02    0.525    87.78
1931.02    0.526    87.10
1932.02    0.526    86.43
1933.02    0.526    85.76
1934.02    0.526    85.09
1935.02    0.526    84.42
1936.02    0.526    83.74
1937.02    0.526    83.07
1938.02    0.526    82.40
1939.02    0.525    81.73
1940.02    0.525    81.05
1941.02    0.524    80.37
1942.02    0.523    79.70
1943.02    0.522    79.01
1944.02    0.521    78.33
1945.02    0.520    77.64
1946.02    0.519    76.96
1947.02    0.518    76.26
1948.02    0.516    75.57
1949.02    0.515    74.87
1950.02    0.513    74.16
1951.02    0.511    73.45
1952.02    0.510    72.74
1953.02    0.508    72.02
1954.02    0.506    71.30
1955.02    0.504    70.57
1956.02    0.502    69.83
1957.02    0.500    69.09
1958.02    0.498    68.34
1959.02    0.496    67.59
1960.02    0.493    66.83
1961.02    0.491    66.06
1962.02    0.489    65.29
1963.02    0.486    64.50
1964.02    0.484    63.71
1965.02    0.481    62.91
1966.02    0.479    62.11
1967.02    0.476    61.29
1968.02    0.474    60.47
1969.02    0.471    59.63
1970.02    0.469    58.79
1971.02    0.466    57.94
1972.02    0.463    57.08
1973.02    0.461    56.21
1974.02    0.458    55.32
1975.02    0.455    54.43
1976.02    0.452    53.53
1977.02    0.450    52.61
1978.02    0.447    51.69
1979.02    0.444    50.75
1980.02    0.442    49.80
1981.02    0.439    48.84
1982.02    0.436    47.87
1983.02    0.434    46.89
1984.02    0.431    45.89
1985.02    0.428    44.88
1986.02    0.426    43.86
1987.02    0.423    42.83
1988.02    0.420    41.78
1989.02    0.418    40.72
1990.02    0.415    39.65
1991.02    0.413    38.56
1992.02    0.410    37.47
1993.02    0.408    36.36
1994.02    0.406    35.23
1995.02    0.403    34.09
1996.02    0.401    32.94
1997.02    0.399    31.78
1998.02    0.397    30.61
1999.02    0.395    29.42
2000.02    0.393    28.22
2001.02    0.391    27.01
2002.02    0.389    25.78
2003.02    0.387    24.54
2004.02    0.385    23.30
2005.02    0.384    22.04
2006.02    0.382    20.77
2007.02    0.380    19.49
2008.02    0.379    18.20
2009.02    0.378    16.90
2010.02    0.376    15.59
2011.02    0.375    14.27
2012.02    0.374    12.95
2013.02    0.373    11.61
2014.02    0.372    10.27
2015.02    0.371     8.92
2016.02    0.370     7.57
2017.02    0.370     6.21
2018.02    0.369     4.85
2019.02    0.369     3.48
2020.02    0.368     2.11
2021.02    0.368     0.73
2022.02    0.367   359.35
2023.02    0.367   357.98
2024.02    0.367   356.59
2025.02    0.367   355.21
2026.02    0.367   353.83
2027.02    0.367   352.45
2028.02    0.367   351.07
2029.02    0.367   349.69
2030.02    0.368   348.31
2031.02    0.368   346.93
2032.02    0.368   345.56
2033.02    0.369   344.19
2034.02    0.369   342.82
2035.02    0.370   341.46
2036.02    0.370   340.10
2037.02    0.371   338.74
2038.02    0.371   337.39
2039.02    0.372   336.04
2040.02    0.372   334.70
2041.02    0.373   333.36
2042.02    0.373   332.02
2043.02    0.374   330.69
2044.02    0.374   329.36
2045.02    0.375   328.03
2046.02    0.375   326.71
2047.02    0.376   325.39
2048.02    0.376   324.07
2049.02    0.376   322.76
2050.02    0.376   321.44
2051.02    0.376   320.13
2052.02    0.376   318.82
2053.02    0.376   317.51
2054.02    0.376   316.19
2055.02    0.376   314.87
2056.02    0.375   313.55
2057.02    0.374   312.22
2058.02    0.373   310.89
2059.02    0.372   309.55
2060.02    0.371   308.20
2061.02    0.369   306.84
2062.02    0.367   305.47
2063.02    0.365   304.08
2064.02    0.362   302.67
2065.02    0.360   301.24
2066.02    0.357   299.79
2067.02    0.353   298.32
2068.02    0.349   296.81
2069.02    0.345   295.26
2070.02    0.340   293.68
2071.02    0.335   292.05
2072.02    0.329   290.36
2073.02    0.323   288.62
2074.02    0.317   286.80
2075.02    0.310   284.90
2076.02    0.302   282.92
2077.02    0.294   280.82
2078.02    0.285   278.60
2079.02    0.276   276.24
2080.02    0.266   273.71
2081.02    0.256   270.98
2082.02    0.246   268.03
2083.02    0.235   264.80
2084.02    0.224   261.25
2085.02    0.212   257.34
2086.02    0.201   252.98
2087.02    0.190   248.13
2088.02    0.180   242.70
2089.02    0.171   236.65
2090.02    0.163   229.94
2091.02    0.156   222.60
2092.02    0.151   214.71
2093.02    0.149   206.46
2094.02    0.149   198.07
2095.02    0.152   189.83
2096.02    0.156   181.96
2097.02    0.163   174.66
2098.02    0.172   168.01
2099.02    0.182   162.03
2100.02    0.192   156.70
2101.02    0.204   151.95
2102.02    0.216   147.73
2103.02    0.229   143.96
2104.02    0.241   140.59
2105.02    0.254   137.55
2106.02    0.266   134.79
2107.02    0.279   132.29
2108.02    0.291   129.99
2109.02    0.303   127.88
2110.02    0.314   125.92
2111.02    0.326   124.10
2112.02    0.336   122.40
2113.02    0.347   120.81
2114.02    0.357   119.31
2115.02    0.367   117.89
2116.02    0.377   116.55
2117.02    0.386   115.27
2118.02    0.395   114.04
2119.02    0.403   112.87
2120.02    0.411   111.75
2121.02    0.419   110.67
2122.02    0.426   109.63
2123.02    0.433   108.62
2124.02    0.440   107.64
2125.02    0.446   106.70
2126.02    0.452   105.78
2127.02    0.458   104.88
2128.02    0.464   104.00
2129.02    0.469   103.15
2130.02    0.474   102.31
2131.02    0.479   101.49
2132.02    0.483   100.69
2133.02    0.487    99.90
2134.02    0.491    99.12

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 14:56:45