Double Star Calculator - Orbit

Orbital Elements for I502AB
WDS: I502AB WDS ID/Discoverer
P: 256.000 Orbital period (years)
a: 0.307 Semi-major axis (arcseconds)
i: 180.0 Inclination (degrees)
Ω: 225.2 Longitude of ascending node (degrees)
T: 2016.580 Epoch of periastron passage (year)
e: 0.728 Eccentricity
ω: 0.0 Longitude of periastron (degrees)
Start-Year: 1897.0 Year
End-Year: 2153.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I502AB
Position: 104532.90-250134.0 Epoch-2000 right ascension and declination
WDS-ID: 10455-2502 WDS designation
Discoverer Code: I502AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 93227 HD catalog number
Hipparcos number: 52615 Hipparcos catalog number
V1: 7.78 Magnitude of the primary
V2: 8.86 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Tok2019c Reference

Double Star Orbit for I502AB



WDS 6th Orbit including measures of I502AB

-- 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 I502AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.140   137.55
--------------------------
1897.00    0.529    42.48
1898.00    0.528    42.15
1899.00    0.528    41.83
1900.00    0.528    41.50
1901.00    0.527    41.17
1902.00    0.526    40.84
1903.00    0.526    40.52
1904.00    0.525    40.19
1905.00    0.524    39.86
1906.00    0.524    39.53
1907.00    0.523    39.19
1908.00    0.522    38.86
1909.00    0.521    38.53
1910.00    0.520    38.19
1911.00    0.519    37.86
1912.00    0.518    37.52
1913.00    0.517    37.18
1914.00    0.516    36.84
1915.00    0.515    36.50
1916.00    0.513    36.15
1917.00    0.512    35.81
1918.00    0.511    35.46
1919.00    0.509    35.11
1920.00    0.508    34.76
1921.00    0.507    34.41
1922.00    0.505    34.05
1923.00    0.503    33.69
1924.00    0.502    33.33
1925.00    0.500    32.97
1926.00    0.498    32.61
1927.00    0.497    32.24
1928.00    0.495    31.87
1929.00    0.493    31.50
1930.00    0.491    31.12
1931.00    0.489    30.74
1932.00    0.487    30.36
1933.00    0.485    29.98
1934.00    0.483    29.59
1935.00    0.481    29.20
1936.00    0.478    28.80
1937.00    0.476    28.40
1938.00    0.474    28.00
1939.00    0.471    27.59
1940.00    0.469    27.18
1941.00    0.466    26.77
1942.00    0.464    26.35
1943.00    0.461    25.92
1944.00    0.459    25.49
1945.00    0.456    25.06
1946.00    0.453    24.62
1947.00    0.450    24.17
1948.00    0.447    23.72
1949.00    0.444    23.26
1950.00    0.441    22.80
1951.00    0.438    22.33
1952.00    0.435    21.86
1953.00    0.432    21.37
1954.00    0.429    20.88
1955.00    0.425    20.38
1956.00    0.422    19.88
1957.00    0.419    19.36
1958.00    0.415    18.84
1959.00    0.411    18.31
1960.00    0.408    17.77
1961.00    0.404    17.21
1962.00    0.400    16.65
1963.00    0.396    16.08
1964.00    0.392    15.50
1965.00    0.388    14.90
1966.00    0.384    14.29
1967.00    0.380    13.67
1968.00    0.376    13.03
1969.00    0.372    12.38
1970.00    0.367    11.72
1971.00    0.363    11.04
1972.00    0.358    10.34
1973.00    0.354     9.62
1974.00    0.349     8.89
1975.00    0.344     8.13
1976.00    0.339     7.35
1977.00    0.334     6.55
1978.00    0.329     5.73
1979.00    0.324     4.88
1980.00    0.319     4.00
1981.00    0.314     3.09
1982.00    0.308     2.15
1983.00    0.303     1.18
1984.00    0.297     0.17
1985.00    0.291   359.12
1986.00    0.286   358.03
1987.00    0.280   356.89
1988.00    0.274   355.70
1989.00    0.268   354.46
1990.00    0.261   353.16
1991.00    0.255   351.80
1992.00    0.248   350.37
1993.00    0.242   348.86
1994.00    0.235   347.26
1995.00    0.228   345.57
1996.00    0.221   343.77
1997.00    0.214   341.85
1998.00    0.207   339.80
1999.00    0.200   337.61
2000.00    0.192   335.24
2001.00    0.185   332.68
2002.00    0.177   329.90
2003.00    0.169   326.87
2004.00    0.161   323.54
2005.00    0.153   319.87
2006.00    0.145   315.80
2007.00    0.137   311.25
2008.00    0.129   306.14
2009.00    0.122   300.37
2010.00    0.114   293.81
2011.00    0.107   286.34
2012.00    0.100   277.83
2013.00    0.094   268.17
2014.00    0.089   257.34
2015.00    0.086   245.43
2016.00    0.084   232.74
2017.00    0.084   219.73
2018.00    0.085   206.96
2019.00    0.089   194.90
2020.00    0.093   183.88
2021.00    0.099   174.04
2022.00    0.106   165.35
2023.00    0.113   157.72
2024.00    0.120   151.03
2025.00    0.128   145.14
2026.00    0.136   139.93
2027.00    0.144   135.30
2028.00    0.152   131.15
2029.00    0.160   127.42
2030.00    0.168   124.04
2031.00    0.176   120.96
2032.00    0.183   118.15
2033.00    0.191   115.55
2034.00    0.199   113.16
2035.00    0.206   110.94
2036.00    0.213   108.87
2037.00    0.220   106.93
2038.00    0.227   105.11
2039.00    0.234   103.41
2040.00    0.241   101.79
2041.00    0.247   100.27
2042.00    0.254    98.82
2043.00    0.260    97.45
2044.00    0.267    96.14
2045.00    0.273    94.89
2046.00    0.279    93.70
2047.00    0.285    92.55
2048.00    0.291    91.45
2049.00    0.296    90.40
2050.00    0.302    89.38
2051.00    0.307    88.40
2052.00    0.313    87.46
2053.00    0.318    86.55
2054.00    0.323    85.66
2055.00    0.329    84.81
2056.00    0.334    83.98
2057.00    0.339    83.17
2058.00    0.343    82.39
2059.00    0.348    81.63
2060.00    0.353    80.90
2061.00    0.358    80.18
2062.00    0.362    79.47
2063.00    0.367    78.79
2064.00    0.371    78.12
2065.00    0.375    77.47
2066.00    0.380    76.83
2067.00    0.384    76.21
2068.00    0.388    75.60
2069.00    0.392    75.00
2070.00    0.396    74.41
2071.00    0.400    73.84
2072.00    0.403    73.28
2073.00    0.407    72.72
2074.00    0.411    72.18
2075.00    0.414    71.65
2076.00    0.418    71.12
2077.00    0.421    70.60
2078.00    0.425    70.10
2079.00    0.428    69.60
2080.00    0.431    69.11
2081.00    0.435    68.62
2082.00    0.438    68.14
2083.00    0.441    67.67
2084.00    0.444    67.21
2085.00    0.447    66.75
2086.00    0.450    66.30
2087.00    0.453    65.85
2088.00    0.455    65.41
2089.00    0.458    64.98
2090.00    0.461    64.55
2091.00    0.463    64.12
2092.00    0.466    63.70
2093.00    0.469    63.28
2094.00    0.471    62.87
2095.00    0.473    62.46
2096.00    0.476    62.06
2097.00    0.478    61.66
2098.00    0.480    61.27
2099.00    0.482    60.87
2100.00    0.485    60.49
2101.00    0.487    60.10
2102.00    0.489    59.72
2103.00    0.491    59.34
2104.00    0.493    58.96
2105.00    0.495    58.59
2106.00    0.496    58.22
2107.00    0.498    57.85
2108.00    0.500    57.49
2109.00    0.502    57.13
2110.00    0.503    56.76
2111.00    0.505    56.41
2112.00    0.506    56.05
2113.00    0.508    55.70
2114.00    0.509    55.35
2115.00    0.511    55.00
2116.00    0.512    54.65
2117.00    0.513    54.30
2118.00    0.514    53.96
2119.00    0.516    53.62
2120.00    0.517    53.28
2121.00    0.518    52.94
2122.00    0.519    52.60
2123.00    0.520    52.26
2124.00    0.521    51.93
2125.00    0.522    51.59
2126.00    0.523    51.26
2127.00    0.524    50.93
2128.00    0.524    50.60
2129.00    0.525    50.27
2130.00    0.526    49.94
2131.00    0.526    49.61
2132.00    0.527    49.28
2133.00    0.527    48.95
2134.00    0.528    48.63
2135.00    0.528    48.30
2136.00    0.529    47.98
2137.00    0.529    47.65
2138.00    0.530    47.33
2139.00    0.530    47.00
2140.00    0.530    46.68
2141.00    0.530    46.36
2142.00    0.530    46.03
2143.00    0.530    45.71
2144.00    0.530    45.39
2145.00    0.530    45.06
2146.00    0.530    44.74
2147.00    0.530    44.42
2148.00    0.530    44.10
2149.00    0.530    43.77
2150.00    0.530    43.45
2151.00    0.530    43.12
2152.00    0.529    42.80






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 16:30:24



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