Double Star Calculator - Orbit

Orbital Elements for A1831BC

WDS:	A1831BC	WDS ID/Discoverer
P:	216.020	Orbital period (years)
a:	0.187	Semi-major axis (arcseconds)
i:	56.0	Inclination (degrees)
Ω:	231.8	Longitude of ascending node (degrees)
T:	1986.200	Epoch of periastron passage (year)
e:	0.099	Eccentricity
ω:	300.1	Longitude of periastron (degrees)
Start-Year:	1916.99	Year
End-Year:	2133.01	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1831BC
Position:	035427.09+051128.2	Epoch-2000 right ascension and declination
WDS-ID:	03545+0510	WDS designation
Discoverer Code:	A1831BC	Discover designation and components
ADS number:	2849	Aitken Double Star catalog
HD number:	24550	HD catalog number
Hipparcos number:	18264	Hipparcos catalog number
V1:	9.38	Magnitude of the primary
V2:	10.35	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Tok2015c	Reference

Double Star Orbit for A1831BC

WDS 6th Orbit including measures of A1831BC

-- 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 A1831BC

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.175   242.20
--------------------------
1916.99    0.196    49.04
1917.99    0.196    49.89
1918.99    0.195    50.73
1919.99    0.195    51.58
1920.99    0.194    52.44
1921.99    0.194    53.30
1922.99    0.193    54.17
1923.99    0.192    55.04
1924.99    0.191    55.92
1925.99    0.190    56.81
1926.99    0.189    57.71
1927.99    0.188    58.62
1928.99    0.187    59.54
1929.99    0.185    60.48
1930.99    0.184    61.43
1931.99    0.182    62.39
1932.99    0.181    63.38
1933.99    0.179    64.38
1934.99    0.177    65.41
1935.99    0.175    66.46
1936.99    0.173    67.53
1937.99    0.171    68.63
1938.99    0.168    69.76
1939.99    0.166    70.92
1940.99    0.164    72.11
1941.99    0.161    73.34
1942.99    0.159    74.61
1943.99    0.156    75.92
1944.99    0.153    77.27
1945.99    0.151    78.67
1946.99    0.148    80.13
1947.99    0.145    81.64
1948.99    0.142    83.21
1949.99    0.139    84.84
1950.99    0.137    86.54
1951.99    0.134    88.32
1952.99    0.131    90.17
1953.99    0.128    92.11
1954.99    0.125    94.13
1955.99    0.122    96.25
1956.99    0.120    98.47
1957.99    0.117   100.79
1958.99    0.114   103.21
1959.99    0.112   105.75
1960.99    0.109   108.40
1961.99    0.107   111.16
1962.99    0.105   114.04
1963.99    0.103   117.03
1964.99    0.101   120.14
1965.99    0.100   123.34
1966.99    0.098   126.64
1967.99    0.097   130.03
1968.99    0.096   133.48
1969.99    0.096   136.99
1970.99    0.095   140.54
1971.99    0.095   144.11
1972.99    0.095   147.67
1973.99    0.096   151.21
1974.99    0.097   154.72
1975.99    0.097   158.16
1976.99    0.099   161.54
1977.99    0.100   164.83
1978.99    0.102   168.02
1979.99    0.103   171.12
1980.99    0.105   174.10
1981.99    0.107   176.97
1982.99    0.110   179.73
1983.99    0.112   182.37
1984.99    0.114   184.91
1985.99    0.117   187.33
1986.99    0.119   189.66
1987.99    0.122   191.88
1988.99    0.125   194.01
1989.99    0.127   196.05
1990.99    0.130   198.00
1991.99    0.133   199.88
1992.99    0.136   201.68
1993.99    0.138   203.41
1994.99    0.141   205.08
1995.99    0.143   206.68
1996.99    0.146   208.23
1997.99    0.148   209.73
1998.99    0.151   211.18
1999.99    0.153   212.59
2000.99    0.155   213.95
2001.99    0.157   215.28
2002.99    0.159   216.57
2003.99    0.161   217.83
2004.99    0.163   219.06
2005.99    0.165   220.27
2006.99    0.167   221.45
2007.99    0.168   222.60
2008.99    0.170   223.74
2009.99    0.171   224.86
2010.99    0.172   225.96
2011.99    0.173   227.05
2012.99    0.174   228.13
2013.99    0.175   229.19
2014.99    0.176   230.25
2015.99    0.176   231.30
2016.99    0.177   232.34
2017.99    0.177   233.38
2018.99    0.177   234.41
2019.99    0.177   235.44
2020.99    0.177   236.47
2021.99    0.177   237.50
2022.99    0.177   238.54
2023.99    0.177   239.58
2024.99    0.176   240.62
2025.99    0.176   241.67
2026.99    0.175   242.72
2027.99    0.174   243.79
2028.99    0.173   244.86
2029.99    0.172   245.94
2030.99    0.171   247.04
2031.99    0.170   248.16
2032.99    0.169   249.28
2033.99    0.168   250.43
2034.99    0.166   251.59
2035.99    0.165   252.77
2036.99    0.163   253.98
2037.99    0.162   255.21
2038.99    0.160   256.46
2039.99    0.158   257.74
2040.99    0.157   259.05
2041.99    0.155   260.39
2042.99    0.153   261.76
2043.99    0.151   263.16
2044.99    0.149   264.60
2045.99    0.147   266.08
2046.99    0.145   267.59
2047.99    0.143   269.15
2048.99    0.141   270.75
2049.99    0.139   272.39
2050.99    0.138   274.08
2051.99    0.136   275.82
2052.99    0.134   277.61
2053.99    0.132   279.44
2054.99    0.130   281.33
2055.99    0.128   283.27
2056.99    0.127   285.27
2057.99    0.125   287.32
2058.99    0.123   289.42
2059.99    0.122   291.57
2060.99    0.121   293.77
2061.99    0.119   296.03
2062.99    0.118   298.33
2063.99    0.117   300.67
2064.99    0.116   303.06
2065.99    0.115   305.48
2066.99    0.115   307.94
2067.99    0.114   310.42
2068.99    0.114   312.92
2069.99    0.113   315.44
2070.99    0.113   317.97
2071.99    0.113   320.50
2072.99    0.113   323.03
2073.99    0.114   325.55
2074.99    0.114   328.05
2075.99    0.115   330.53
2076.99    0.115   332.98
2077.99    0.116   335.40
2078.99    0.117   337.79
2079.99    0.118   340.12
2080.99    0.119   342.42
2081.99    0.121   344.67
2082.99    0.122   346.86
2083.99    0.124   349.00
2084.99    0.125   351.09
2085.99    0.127   353.13
2086.99    0.129   355.11
2087.99    0.131   357.03
2088.99    0.133   358.91
2089.99    0.135     0.72
2090.99    0.137     2.49
2091.99    0.139     4.20
2092.99    0.141     5.87
2093.99    0.143     7.48
2094.99    0.145     9.05
2095.99    0.147    10.57
2096.99    0.149    12.05
2097.99    0.151    13.49
2098.99    0.153    14.89
2099.99    0.155    16.25
2100.99    0.158    17.57
2101.99    0.160    18.86
2102.99    0.162    20.11
2103.99    0.164    21.34
2104.99    0.166    22.53
2105.99    0.168    23.70
2106.99    0.170    24.84
2107.99    0.172    25.95
2108.99    0.173    27.04
2109.99    0.175    28.11
2110.99    0.177    29.16
2111.99    0.179    30.18
2112.99    0.180    31.19
2113.99    0.182    32.18
2114.99    0.183    33.15
2115.99    0.185    34.11
2116.99    0.186    35.06
2117.99    0.187    35.99
2118.99    0.188    36.91
2119.99    0.190    37.81
2120.99    0.191    38.71
2121.99    0.191    39.60
2122.99    0.192    40.48
2123.99    0.193    41.35
2124.99    0.194    42.22
2125.99    0.194    43.08
2126.99    0.195    43.94
2127.99    0.195    44.79
2128.99    0.196    45.64
2129.99    0.196    46.49
2130.99    0.196    47.33
2131.99    0.196    48.18
2132.99    0.196    49.02

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 15:16:09