Double Star Calculator - Orbit

Orbital Elements for MCA65AA,AB
WDS: MCA65AA,AB WDS ID/Discoverer
P: 161.500 Orbital period (years)
a: 0.208 Semi-major axis (arcseconds)
i: 145.8 Inclination (degrees)
Ω: 205.2 Longitude of ascending node (degrees)
T: 2024.300 Epoch of periastron passage (year)
e: 0.261 Eccentricity
ω: 265.5 Longitude of periastron (degrees)
Start-Year: 1944.25 Year
End-Year: 2105.75 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for MCA65AA,AB
Position: 205949.55+473115.4 Epoch-2000 right ascension and declination
WDS-ID: 20598+4731 WDS designation
Discoverer Code: MCA65AA,AB Discover designation and components
ADS number: 14526 Aitken Double Star catalog
HD number: 200120 HD catalog number
Hipparcos number: 103632 Hipparcos catalog number
V1: 4.80 Magnitude of the primary
V2: 7.64 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2008 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: Msn2011f Reference

Double Star Orbit for MCA65AA,AB



WDS 6th Orbit including measures of MCA65AA,AB

-- 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 MCA65AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.128   290.18
--------------------------
1944.25    0.217   119.49
1945.25    0.217   117.86
1946.25    0.217   116.22
1947.25    0.217   114.58
1948.25    0.217   112.94
1949.25    0.216   111.30
1950.25    0.216   109.65
1951.25    0.216   108.00
1952.25    0.216   106.36
1953.25    0.216   104.71
1954.25    0.216   103.06
1955.25    0.216   101.41
1956.25    0.216    99.76
1957.25    0.216    98.10
1958.25    0.216    96.45
1959.25    0.216    94.80
1960.25    0.216    93.15
1961.25    0.216    91.50
1962.25    0.216    89.84
1963.25    0.216    88.19
1964.25    0.216    86.54
1965.25    0.216    84.88
1966.25    0.216    83.23
1967.25    0.216    81.58
1968.25    0.216    79.92
1969.25    0.216    78.27
1970.25    0.216    76.61
1971.25    0.215    74.95
1972.25    0.215    73.29
1973.25    0.215    71.63
1974.25    0.215    69.97
1975.25    0.215    68.30
1976.25    0.214    66.63
1977.25    0.214    64.95
1978.25    0.214    63.27
1979.25    0.213    61.58
1980.25    0.213    59.89
1981.25    0.212    58.19
1982.25    0.212    56.48
1983.25    0.211    54.76
1984.25    0.211    53.03
1985.25    0.210    51.29
1986.25    0.209    49.53
1987.25    0.208    47.76
1988.25    0.207    45.97
1989.25    0.206    44.17
1990.25    0.205    42.34
1991.25    0.203    40.49
1992.25    0.202    38.62
1993.25    0.201    36.72
1994.25    0.199    34.79
1995.25    0.197    32.83
1996.25    0.195    30.83
1997.25    0.194    28.80
1998.25    0.191    26.72
1999.25    0.189    24.60
2000.25    0.187    22.42
2001.25    0.185    20.19
2002.25    0.182    17.90
2003.25    0.180    15.55
2004.25    0.177    13.13
2005.25    0.174    10.63
2006.25    0.171     8.04
2007.25    0.168     5.37
2008.25    0.165     2.60
2009.25    0.162   359.72
2010.25    0.159   356.74
2011.25    0.156   353.63
2012.25    0.153   350.39
2013.25    0.150   347.03
2014.25    0.147   343.52
2015.25    0.144   339.86
2016.25    0.141   336.06
2017.25    0.138   332.11
2018.25    0.136   328.00
2019.25    0.134   323.76
2020.25    0.132   319.38
2021.25    0.130   314.88
2022.25    0.129   310.28
2023.25    0.128   305.61
2024.25    0.127   300.87
2025.25    0.127   296.12
2026.25    0.127   291.36
2027.25    0.128   286.65
2028.25    0.129   281.99
2029.25    0.131   277.42
2030.25    0.132   272.97
2031.25    0.134   268.63
2032.25    0.137   264.44
2033.25    0.139   260.39
2034.25    0.142   256.50
2035.25    0.145   252.76
2036.25    0.148   249.17
2037.25    0.151   245.73
2038.25    0.154   242.43
2039.25    0.158   239.27
2040.25    0.161   236.24
2041.25    0.164   233.32
2042.25    0.167   230.52
2043.25    0.171   227.83
2044.25    0.174   225.23
2045.25    0.177   222.73
2046.25    0.180   220.31
2047.25    0.183   217.97
2048.25    0.186   215.69
2049.25    0.188   213.49
2050.25    0.191   211.35
2051.25    0.193   209.26
2052.25    0.196   207.22
2053.25    0.198   205.23
2054.25    0.200   203.28
2055.25    0.202   201.38
2056.25    0.204   199.51
2057.25    0.206   197.67
2058.25    0.207   195.87
2059.25    0.209   194.09
2060.25    0.210   192.34
2061.25    0.212   190.61
2062.25    0.213   188.90
2063.25    0.214   187.21
2064.25    0.215   185.54
2065.25    0.216   183.89
2066.25    0.217   182.25
2067.25    0.218   180.62
2068.25    0.219   179.00
2069.25    0.219   177.40
2070.25    0.220   175.80
2071.25    0.220   174.21
2072.25    0.221   172.62
2073.25    0.221   171.05
2074.25    0.221   169.47
2075.25    0.222   167.90
2076.25    0.222   166.34
2077.25    0.222   164.77
2078.25    0.222   163.21
2079.25    0.222   161.65
2080.25    0.222   160.09
2081.25    0.222   158.53
2082.25    0.222   156.97
2083.25    0.222   155.41
2084.25    0.222   153.84
2085.25    0.222   152.28
2086.25    0.222   150.71
2087.25    0.221   149.14
2088.25    0.221   147.57
2089.25    0.221   145.99
2090.25    0.221   144.41
2091.25    0.220   142.83
2092.25    0.220   141.25
2093.25    0.220   139.66
2094.25    0.220   138.07
2095.25    0.219   136.47
2096.25    0.219   134.87
2097.25    0.219   133.27
2098.25    0.219   131.66
2099.25    0.218   130.05
2100.25    0.218   128.43
2101.25    0.218   126.81
2102.25    0.218   125.19
2103.25    0.218   123.57
2104.25    0.217   121.94
2105.25    0.217   120.31






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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 18:21:17



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