Double Star Calculator - Orbit

Orbital Elements for J838
WDS: J838 WDS ID/Discoverer
P: 239.840 Orbital period (years)
a: 7.451 Semi-major axis (arcseconds)
i: 77.6 Inclination (degrees)
Ω: 103.0 Longitude of ascending node (degrees)
T: 1967.510 Epoch of periastron passage (year)
e: 0.784 Eccentricity
ω: 258.1 Longitude of periastron (degrees)
Start-Year: 1905.08 Year
End-Year: 2144.92 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for J838
Position: 202100.67+102821.0 Epoch-2000 right ascension and declination
WDS-ID: 20210+1028 WDS designation
Discoverer Code: J838 Discover designation and components
ADS number: 13734 Aitken Double Star catalog
HD number: 357347 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 12.5 Magnitude of the primary
V2: 12.6 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 1995 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: Ole2002b Reference

Double Star Orbit for J838



WDS 6th Orbit including measures of J838

-- 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 J838
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    6.112   121.74
--------------------------
1905.08    2.732   222.95
1906.08    2.751   224.43
1907.08    2.772   225.89
1908.08    2.793   227.32
1909.08    2.816   228.73
1910.08    2.840   230.12
1911.08    2.865   231.49
1912.08    2.891   232.83
1913.08    2.918   234.15
1914.08    2.945   235.44
1915.08    2.973   236.71
1916.08    3.002   237.95
1917.08    3.031   239.17
1918.08    3.061   240.37
1919.08    3.091   241.54
1920.08    3.122   242.69
1921.08    3.153   243.82
1922.08    3.184   244.93
1923.08    3.215   246.02
1924.08    3.246   247.08
1925.08    3.277   248.12
1926.08    3.308   249.15
1927.08    3.339   250.16
1928.08    3.369   251.14
1929.08    3.399   252.11
1930.08    3.428   253.07
1931.08    3.457   254.00
1932.08    3.485   254.93
1933.08    3.512   255.83
1934.08    3.538   256.73
1935.08    3.563   257.61
1936.08    3.586   258.48
1937.08    3.609   259.34
1938.08    3.629   260.18
1939.08    3.648   261.02
1940.08    3.665   261.85
1941.08    3.679   262.68
1942.08    3.691   263.50
1943.08    3.701   264.31
1944.08    3.707   265.12
1945.08    3.710   265.93
1946.08    3.709   266.73
1947.08    3.704   267.54
1948.08    3.695   268.35
1949.08    3.680   269.17
1950.08    3.660   269.99
1951.08    3.633   270.83
1952.08    3.599   271.68
1953.08    3.557   272.55
1954.08    3.505   273.44
1955.08    3.442   274.36
1956.08    3.366   275.31
1957.08    3.276   276.32
1958.08    3.169   277.39
1959.08    3.041   278.54
1960.08    2.889   279.80
1961.08    2.707   281.22
1962.08    2.490   282.86
1963.08    2.229   284.86
1964.08    1.916   287.45
1965.08    1.544   291.19
1966.08    1.113   297.61
1967.08    0.652   312.92
1968.08    0.349    10.29
1969.08    0.638    69.83
1970.08    1.106    85.65
1971.08    1.560    92.06
1972.08    1.975    95.65
1973.08    2.348    98.04
1974.08    2.683    99.80
1975.08    2.984   101.18
1976.08    3.255   102.32
1977.08    3.501   103.30
1978.08    3.724   104.15
1979.08    3.928   104.91
1980.08    4.114   105.59
1981.08    4.286   106.22
1982.08    4.444   106.81
1983.08    4.589   107.35
1984.08    4.724   107.86
1985.08    4.848   108.35
1986.08    4.964   108.81
1987.08    5.071   109.25
1988.08    5.170   109.67
1989.08    5.262   110.08
1990.08    5.348   110.48
1991.08    5.428   110.86
1992.08    5.502   111.23
1993.08    5.571   111.59
1994.08    5.634   111.95
1995.08    5.694   112.29
1996.08    5.748   112.63
1997.08    5.799   112.97
1998.08    5.846   113.29
1999.08    5.889   113.62
2000.08    5.928   113.93
2001.08    5.964   114.25
2002.08    5.997   114.56
2003.08    6.027   114.87
2004.08    6.054   115.17
2005.08    6.079   115.47
2006.08    6.100   115.77
2007.08    6.120   116.07
2008.08    6.137   116.37
2009.08    6.151   116.66
2010.08    6.163   116.95
2011.08    6.174   117.24
2012.08    6.182   117.54
2013.08    6.188   117.83
2014.08    6.192   118.12
2015.08    6.195   118.41
2016.08    6.195   118.69
2017.08    6.194   118.98
2018.08    6.192   119.27
2019.08    6.188   119.56
2020.08    6.182   119.85
2021.08    6.175   120.15
2022.08    6.166   120.44
2023.08    6.156   120.73
2024.08    6.145   121.02
2025.08    6.132   121.32
2026.08    6.118   121.61
2027.08    6.103   121.91
2028.08    6.086   122.21
2029.08    6.069   122.51
2030.08    6.050   122.81
2031.08    6.031   123.12
2032.08    6.010   123.42
2033.08    5.988   123.73
2034.08    5.965   124.04
2035.08    5.942   124.36
2036.08    5.917   124.67
2037.08    5.891   124.99
2038.08    5.865   125.31
2039.08    5.838   125.64
2040.08    5.810   125.97
2041.08    5.781   126.30
2042.08    5.751   126.63
2043.08    5.721   126.97
2044.08    5.689   127.31
2045.08    5.658   127.65
2046.08    5.625   128.00
2047.08    5.592   128.36
2048.08    5.558   128.71
2049.08    5.523   129.08
2050.08    5.488   129.44
2051.08    5.452   129.81
2052.08    5.416   130.19
2053.08    5.379   130.57
2054.08    5.342   130.96
2055.08    5.304   131.35
2056.08    5.266   131.75
2057.08    5.227   132.15
2058.08    5.187   132.56
2059.08    5.148   132.98
2060.08    5.107   133.40
2061.08    5.067   133.83
2062.08    5.026   134.26
2063.08    4.985   134.71
2064.08    4.943   135.16
2065.08    4.901   135.62
2066.08    4.858   136.08
2067.08    4.816   136.56
2068.08    4.773   137.04
2069.08    4.730   137.53
2070.08    4.686   138.04
2071.08    4.642   138.55
2072.08    4.598   139.07
2073.08    4.554   139.60
2074.08    4.510   140.14
2075.08    4.466   140.69
2076.08    4.421   141.25
2077.08    4.377   141.83
2078.08    4.332   142.41
2079.08    4.287   143.01
2080.08    4.242   143.62
2081.08    4.197   144.24
2082.08    4.152   144.88
2083.08    4.108   145.53
2084.08    4.063   146.20
2085.08    4.018   146.88
2086.08    3.973   147.57
2087.08    3.929   148.29
2088.08    3.884   149.01
2089.08    3.840   149.76
2090.08    3.796   150.52
2091.08    3.752   151.30
2092.08    3.709   152.10
2093.08    3.666   152.92
2094.08    3.623   153.75
2095.08    3.580   154.61
2096.08    3.538   155.49
2097.08    3.496   156.38
2098.08    3.455   157.30
2099.08    3.414   158.24
2100.08    3.374   159.21
2101.08    3.334   160.20
2102.08    3.295   161.21
2103.08    3.256   162.24
2104.08    3.219   163.30
2105.08    3.182   164.39
2106.08    3.145   165.50
2107.08    3.110   166.63
2108.08    3.075   167.80
2109.08    3.041   168.98
2110.08    3.008   170.20
2111.08    2.977   171.44
2112.08    2.946   172.70
2113.08    2.916   174.00
2114.08    2.887   175.32
2115.08    2.860   176.66
2116.08    2.834   178.03
2117.08    2.809   179.43
2118.08    2.785   180.85
2119.08    2.763   182.29
2120.08    2.742   183.76
2121.08    2.723   185.25
2122.08    2.705   186.76
2123.08    2.688   188.28
2124.08    2.673   189.83
2125.08    2.660   191.39
2126.08    2.648   192.97
2127.08    2.638   194.56
2128.08    2.629   196.16
2129.08    2.623   197.77
2130.08    2.617   199.39
2131.08    2.614   201.02
2132.08    2.612   202.64
2133.08    2.612   204.27
2134.08    2.614   205.90
2135.08    2.617   207.52
2136.08    2.622   209.14
2137.08    2.628   210.75
2138.08    2.636   212.36
2139.08    2.646   213.95
2140.08    2.657   215.53
2141.08    2.670   217.10
2142.08    2.684   218.65
2143.08    2.700   220.18
2144.08    2.717   221.69






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 18:14:13



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