Double Star Calculator - Orbit

Orbital Elements for I212

WDS:	I212	WDS ID/Discoverer
P:	246.000	Orbital period (years)
a:	0.599	Semi-major axis (arcseconds)
i:	49.2	Inclination (degrees)
Ω:	191.1	Longitude of ascending node (degrees)
T:	2002.000	Epoch of periastron passage (year)
e:	0.51	Eccentricity
ω:	118.8	Longitude of periastron (degrees)
Start-Year:	1902.0	Year
End-Year:	2148.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I212
Position:	105913.89-813322.8	Epoch-2000 right ascension and declination
WDS-ID:	10592-8133	WDS designation
Discoverer Code:	I212	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	95788	HD catalog number
Hipparcos number:	53700	Hipparcos catalog number
V1:	7.57	Magnitude of the primary
V2:	7.58	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2013	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2014a	Reference

Double Star Orbit for I212

WDS 6th Orbit including measures of I212

-- 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 I212

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.417    32.80
--------------------------
1902.00    0.727   154.86
1903.00    0.728   155.42
1904.00    0.730   155.98
1905.00    0.731   156.53
1906.00    0.732   157.08
1907.00    0.733   157.63
1908.00    0.734   158.18
1909.00    0.735   158.73
1910.00    0.736   159.27
1911.00    0.736   159.82
1912.00    0.737   160.36
1913.00    0.737   160.90
1914.00    0.738   161.45
1915.00    0.738   161.99
1916.00    0.738   162.53
1917.00    0.738   163.07
1918.00    0.738   163.61
1919.00    0.738   164.15
1920.00    0.738   164.70
1921.00    0.737   165.24
1922.00    0.737   165.78
1923.00    0.736   166.32
1924.00    0.736   166.87
1925.00    0.735   167.42
1926.00    0.734   167.96
1927.00    0.733   168.51
1928.00    0.731   169.06
1929.00    0.730   169.62
1930.00    0.728   170.17
1931.00    0.727   170.73
1932.00    0.725   171.29
1933.00    0.723   171.85
1934.00    0.721   172.42
1935.00    0.719   172.99
1936.00    0.716   173.56
1937.00    0.714   174.14
1938.00    0.711   174.72
1939.00    0.708   175.31
1940.00    0.705   175.90
1941.00    0.702   176.49
1942.00    0.698   177.10
1943.00    0.695   177.70
1944.00    0.691   178.32
1945.00    0.687   178.94
1946.00    0.683   179.57
1947.00    0.679   180.21
1948.00    0.674   180.85
1949.00    0.669   181.51
1950.00    0.664   182.17
1951.00    0.659   182.84
1952.00    0.654   183.53
1953.00    0.648   184.22
1954.00    0.642   184.93
1955.00    0.636   185.66
1956.00    0.630   186.39
1957.00    0.623   187.14
1958.00    0.617   187.91
1959.00    0.610   188.70
1960.00    0.602   189.50
1961.00    0.595   190.32
1962.00    0.587   191.17
1963.00    0.579   192.04
1964.00    0.570   192.93
1965.00    0.562   193.85
1966.00    0.553   194.80
1967.00    0.544   195.78
1968.00    0.534   196.80
1969.00    0.524   197.86
1970.00    0.514   198.95
1971.00    0.503   200.09
1972.00    0.493   201.28
1973.00    0.481   202.53
1974.00    0.470   203.83
1975.00    0.458   205.20
1976.00    0.446   206.65
1977.00    0.434   208.17
1978.00    0.421   209.79
1979.00    0.408   211.51
1980.00    0.395   213.34
1981.00    0.381   215.31
1982.00    0.367   217.42
1983.00    0.353   219.69
1984.00    0.339   222.16
1985.00    0.325   224.84
1986.00    0.311   227.77
1987.00    0.296   230.97
1988.00    0.282   234.50
1989.00    0.269   238.39
1990.00    0.256   242.69
1991.00    0.243   247.44
1992.00    0.232   252.68
1993.00    0.222   258.43
1994.00    0.213   264.69
1995.00    0.206   271.43
1996.00    0.201   278.56
1997.00    0.199   285.95
1998.00    0.199   293.44
1999.00    0.201   300.85
2000.00    0.205   308.02
2001.00    0.212   314.82
2002.00    0.220   321.18
2003.00    0.229   327.05
2004.00    0.239   332.45
2005.00    0.250   337.38
2006.00    0.261   341.90
2007.00    0.273   346.05
2008.00    0.284   349.86
2009.00    0.295   353.39
2010.00    0.306   356.66
2011.00    0.316   359.71
2012.00    0.326     2.57
2013.00    0.336     5.27
2014.00    0.344     7.82
2015.00    0.353    10.25
2016.00    0.361    12.57
2017.00    0.368    14.79
2018.00    0.375    16.93
2019.00    0.381    18.99
2020.00    0.387    20.99
2021.00    0.393    22.92
2022.00    0.398    24.81
2023.00    0.403    26.65
2024.00    0.407    28.45
2025.00    0.411    30.21
2026.00    0.415    31.94
2027.00    0.419    33.64
2028.00    0.422    35.31
2029.00    0.425    36.96
2030.00    0.428    38.58
2031.00    0.430    40.19
2032.00    0.433    41.77
2033.00    0.435    43.34
2034.00    0.437    44.89
2035.00    0.439    46.43
2036.00    0.441    47.95
2037.00    0.443    49.46
2038.00    0.445    50.95
2039.00    0.447    52.44
2040.00    0.449    53.91
2041.00    0.450    55.37
2042.00    0.452    56.82
2043.00    0.453    58.26
2044.00    0.455    59.69
2045.00    0.456    61.11
2046.00    0.458    62.53
2047.00    0.460    63.93
2048.00    0.461    65.32
2049.00    0.463    66.70
2050.00    0.464    68.08
2051.00    0.466    69.44
2052.00    0.468    70.80
2053.00    0.469    72.14
2054.00    0.471    73.48
2055.00    0.473    74.80
2056.00    0.475    76.12
2057.00    0.476    77.42
2058.00    0.478    78.72
2059.00    0.480    80.00
2060.00    0.482    81.28
2061.00    0.484    82.54
2062.00    0.486    83.79
2063.00    0.489    85.03
2064.00    0.491    86.27
2065.00    0.493    87.49
2066.00    0.495    88.69
2067.00    0.498    89.89
2068.00    0.500    91.08
2069.00    0.503    92.25
2070.00    0.505    93.41
2071.00    0.508    94.57
2072.00    0.510    95.71
2073.00    0.513    96.83
2074.00    0.516    97.95
2075.00    0.518    99.05
2076.00    0.521   100.15
2077.00    0.524   101.23
2078.00    0.527   102.30
2079.00    0.530   103.35
2080.00    0.533   104.40
2081.00    0.536   105.43
2082.00    0.539   106.46
2083.00    0.542   107.47
2084.00    0.545   108.47
2085.00    0.548   109.46
2086.00    0.551   110.43
2087.00    0.554   111.40
2088.00    0.558   112.35
2089.00    0.561   113.30
2090.00    0.564   114.23
2091.00    0.567   115.15
2092.00    0.571   116.06
2093.00    0.574   116.97
2094.00    0.577   117.86
2095.00    0.581   118.74
2096.00    0.584   119.61
2097.00    0.587   120.47
2098.00    0.591   121.32
2099.00    0.594   122.16
2100.00    0.597   122.99
2101.00    0.601   123.81
2102.00    0.604   124.63
2103.00    0.607   125.43
2104.00    0.611   126.23
2105.00    0.614   127.01
2106.00    0.617   127.79
2107.00    0.621   128.56
2108.00    0.624   129.32
2109.00    0.627   130.08
2110.00    0.631   130.82
2111.00    0.634   131.56
2112.00    0.637   132.29
2113.00    0.640   133.01
2114.00    0.644   133.73
2115.00    0.647   134.44
2116.00    0.650   135.14
2117.00    0.653   135.84
2118.00    0.656   136.53
2119.00    0.659   137.21
2120.00    0.662   137.88
2121.00    0.665   138.55
2122.00    0.668   139.22
2123.00    0.671   139.88
2124.00    0.674   140.53
2125.00    0.677   141.18
2126.00    0.680   141.82
2127.00    0.682   142.45
2128.00    0.685   143.08
2129.00    0.688   143.71
2130.00    0.690   144.33
2131.00    0.693   144.95
2132.00    0.695   145.56
2133.00    0.698   146.17
2134.00    0.700   146.77
2135.00    0.703   147.37
2136.00    0.705   147.97
2137.00    0.707   148.56
2138.00    0.709   149.15
2139.00    0.711   149.74
2140.00    0.713   150.32
2141.00    0.715   150.90
2142.00    0.717   151.47
2143.00    0.719   152.04
2144.00    0.721   152.61
2145.00    0.723   153.18
2146.00    0.724   153.74
2147.00    0.726   154.30

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 16:32:10