Double Star Calculator - Orbit

Orbital Elements for I263
WDS: I263 WDS ID/Discoverer
P: 272.150 Orbital period (years)
a: 0.791 Semi-major axis (arcseconds)
i: 68.6 Inclination (degrees)
Ω: 231.3 Longitude of ascending node (degrees)
T: 1936.560 Epoch of periastron passage (year)
e: 0.374 Eccentricity
ω: 297.3 Longitude of periastron (degrees)
Start-Year: 1888.925 Year
End-Year: 2161.075 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I263
Position: 012158.64-694307.6 Epoch-2000 right ascension and declination
WDS-ID: 01220-6943 WDS designation
Discoverer Code: I263 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 8519 HD catalog number
Hipparcos number: 6377 Hipparcos catalog number
V1: 7.66 Magnitude of the primary
V2: 8.61 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 I263



WDS 6th Orbit including measures of I263

-- 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 I263
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.371   309.26
--------------------------
1888.92    0.750    55.24
1889.92    0.740    55.74
1890.92    0.730    56.26
1891.92    0.719    56.80
1892.92    0.708    57.35
1893.92    0.697    57.91
1894.92    0.685    58.50
1895.92    0.672    59.11
1896.92    0.659    59.74
1897.92    0.646    60.40
1898.92    0.632    61.08
1899.92    0.618    61.80
1900.92    0.604    62.55
1901.92    0.589    63.34
1902.92    0.574    64.17
1903.92    0.558    65.04
1904.92    0.542    65.97
1905.92    0.526    66.95
1906.92    0.509    68.00
1907.92    0.492    69.12
1908.92    0.474    70.32
1909.92    0.456    71.61
1910.92    0.438    73.01
1911.92    0.420    74.54
1912.92    0.401    76.20
1913.92    0.383    78.02
1914.92    0.364    80.04
1915.92    0.345    82.27
1916.92    0.326    84.75
1917.92    0.308    87.54
1918.92    0.290    90.68
1919.92    0.272    94.24
1920.92    0.255    98.27
1921.92    0.239   102.86
1922.92    0.225   108.07
1923.92    0.212   113.94
1924.92    0.201   120.51
1925.92    0.193   127.72
1926.92    0.188   135.44
1927.92    0.186   143.47
1928.92    0.187   151.52
1929.92    0.192   159.32
1930.92    0.200   166.65
1931.92    0.210   173.36
1932.92    0.222   179.39
1933.92    0.236   184.75
1934.92    0.251   189.48
1935.92    0.267   193.65
1936.92    0.284   197.33
1937.92    0.302   200.60
1938.92    0.319   203.51
1939.92    0.337   206.11
1940.92    0.354   208.45
1941.92    0.372   210.58
1942.92    0.389   212.52
1943.92    0.405   214.29
1944.92    0.422   215.93
1945.92    0.437   217.45
1946.92    0.452   218.87
1947.92    0.467   220.19
1948.92    0.480   221.44
1949.92    0.494   222.62
1950.92    0.506   223.75
1951.92    0.518   224.81
1952.92    0.529   225.84
1953.92    0.539   226.82
1954.92    0.549   227.77
1955.92    0.558   228.68
1956.92    0.566   229.57
1957.92    0.574   230.43
1958.92    0.581   231.27
1959.92    0.587   232.09
1960.92    0.592   232.90
1961.92    0.597   233.69
1962.92    0.602   234.47
1963.92    0.605   235.24
1964.92    0.609   236.00
1965.92    0.611   236.75
1966.92    0.613   237.50
1967.92    0.615   238.24
1968.92    0.616   238.98
1969.92    0.616   239.72
1970.92    0.616   240.46
1971.92    0.616   241.19
1972.92    0.615   241.93
1973.92    0.614   242.67
1974.92    0.612   243.42
1975.92    0.610   244.17
1976.92    0.608   244.92
1977.92    0.605   245.68
1978.92    0.602   246.45
1979.92    0.599   247.23
1980.92    0.595   248.01
1981.92    0.591   248.81
1982.92    0.587   249.61
1983.92    0.583   250.43
1984.92    0.578   251.26
1985.92    0.573   252.11
1986.92    0.568   252.97
1987.92    0.563   253.84
1988.92    0.558   254.73
1989.92    0.552   255.64
1990.92    0.546   256.57
1991.92    0.541   257.52
1992.92    0.535   258.49
1993.92    0.529   259.48
1994.92    0.523   260.49
1995.92    0.516   261.53
1996.92    0.510   262.59
1997.92    0.504   263.68
1998.92    0.497   264.80
1999.92    0.491   265.95
2000.92    0.485   267.12
2001.92    0.479   268.33
2002.92    0.472   269.57
2003.92    0.466   270.84
2004.92    0.460   272.15
2005.92    0.454   273.49
2006.92    0.448   274.87
2007.92    0.442   276.29
2008.92    0.436   277.74
2009.92    0.430   279.23
2010.92    0.425   280.76
2011.92    0.420   282.33
2012.92    0.414   283.95
2013.92    0.410   285.60
2014.92    0.405   287.28
2015.92    0.400   289.01
2016.92    0.396   290.78
2017.92    0.392   292.58
2018.92    0.389   294.42
2019.92    0.385   296.29
2020.92    0.382   298.20
2021.92    0.379   300.13
2022.92    0.377   302.09
2023.92    0.375   304.07
2024.92    0.373   306.07
2025.92    0.372   308.09
2026.92    0.371   310.13
2027.92    0.370   312.17
2028.92    0.370   314.22
2029.92    0.370   316.26
2030.92    0.370   318.31
2031.92    0.371   320.34
2032.92    0.373   322.37
2033.92    0.374   324.38
2034.92    0.376   326.37
2035.92    0.378   328.34
2036.92    0.381   330.28
2037.92    0.384   332.19
2038.92    0.388   334.08
2039.92    0.391   335.92
2040.92    0.395   337.74
2041.92    0.399   339.51
2042.92    0.404   341.25
2043.92    0.409   342.94
2044.92    0.414   344.60
2045.92    0.419   346.21
2046.92    0.425   347.78
2047.92    0.431   349.31
2048.93    0.437   350.80
2049.93    0.443   352.25
2050.93    0.449   353.66
2051.93    0.456   355.03
2052.93    0.462   356.36
2053.93    0.469   357.65
2054.93    0.476   358.91
2055.93    0.483     0.12
2056.93    0.490     1.31
2057.93    0.498     2.45
2058.93    0.505     3.57
2059.93    0.512     4.65
2060.93    0.520     5.70
2061.93    0.528     6.72
2062.93    0.535     7.72
2063.93    0.543     8.68
2064.93    0.551     9.62
2065.93    0.558    10.53
2066.93    0.566    11.41
2067.93    0.574    12.28
2068.93    0.582    13.12
2069.93    0.589    13.93
2070.93    0.597    14.73
2071.93    0.605    15.50
2072.93    0.613    16.26
2073.93    0.620    17.00
2074.93    0.628    17.71
2075.93    0.636    18.42
2076.93    0.643    19.10
2077.93    0.651    19.77
2078.93    0.659    20.42
2079.93    0.666    21.06
2080.93    0.674    21.68
2081.93    0.681    22.30
2082.93    0.688    22.89
2083.93    0.695    23.48
2084.93    0.703    24.05
2085.93    0.710    24.61
2086.93    0.717    25.16
2087.93    0.724    25.70
2088.93    0.730    26.23
2089.93    0.737    26.75
2090.93    0.744    27.26
2091.93    0.750    27.77
2092.93    0.757    28.26
2093.93    0.763    28.74
2094.93    0.769    29.22
2095.93    0.775    29.69
2096.93    0.781    30.15
2097.93    0.787    30.61
2098.93    0.793    31.06
2099.93    0.799    31.50
2100.93    0.804    31.93
2101.93    0.809    32.36
2102.93    0.815    32.79
2103.93    0.820    33.21
2104.93    0.825    33.62
2105.93    0.829    34.03
2106.93    0.834    34.44
2107.93    0.838    34.84
2108.93    0.843    35.23
2109.93    0.847    35.63
2110.93    0.851    36.02
2111.93    0.855    36.40
2112.93    0.858    36.78
2113.93    0.862    37.16
2114.93    0.865    37.54
2115.93    0.868    37.91
2116.93    0.871    38.28
2117.93    0.874    38.65
2118.93    0.876    39.01
2119.93    0.879    39.38
2120.93    0.881    39.74
2121.93    0.883    40.10
2122.93    0.884    40.46
2123.93    0.886    40.82
2124.93    0.887    41.17
2125.93    0.888    41.53
2126.93    0.889    41.88
2127.93    0.889    42.24
2128.93    0.890    42.59
2129.93    0.890    42.95
2130.93    0.890    43.30
2131.93    0.890    43.65
2132.93    0.889    44.01
2133.93    0.888    44.36
2134.93    0.887    44.72
2135.93    0.886    45.07
2136.93    0.884    45.43
2137.93    0.882    45.79
2138.93    0.880    46.15
2139.93    0.877    46.51
2140.93    0.875    46.88
2141.93    0.872    47.25
2142.93    0.868    47.62
2143.93    0.865    47.99
2144.93    0.861    48.37
2145.93    0.856    48.75
2146.93    0.852    49.13
2147.93    0.847    49.52
2148.93    0.842    49.91
2149.93    0.836    50.31
2150.93    0.830    50.71
2151.93    0.824    51.12
2152.93    0.817    51.54
2153.93    0.811    51.96
2154.93    0.803    52.39
2155.93    0.796    52.83
2156.93    0.788    53.28
2157.93    0.779    53.73
2158.93    0.770    54.20
2159.93    0.761    54.68
2160.93    0.752    55.17






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 14:50:03



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