Double Star Calculator - Orbit

Orbital Elements for I202

WDS:	I202	WDS ID/Discoverer
P:	169.600	Orbital period (years)
a:	0.9182	Semi-major axis (arcseconds)
i:	113.1	Inclination (degrees)
Ω:	0.9	Longitude of ascending node (degrees)
T:	2004.890	Epoch of periastron passage (year)
e:	0.42	Eccentricity
ω:	21.4	Longitude of periastron (degrees)
Start-Year:	1940.2	Year
End-Year:	2109.8	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I202
Position:	093840.71-393650.9	Epoch-2000 right ascension and declination
WDS-ID:	09387-3937	WDS designation
Discoverer Code:	I202	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	83835	HD catalog number
Hipparcos number:	47238	Hipparcos catalog number
V1:	7.02	Magnitude of the primary
V2:	8.37	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2024	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2024b	Reference

Double Star Orbit for I202

WDS 6th Orbit including measures of I202

-- 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 I202

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.426   221.34
--------------------------
1940.20    0.995   161.97
1941.20    0.979   161.32
1942.20    0.962   160.64
1943.20    0.945   159.94
1944.20    0.927   159.21
1945.20    0.910   158.46
1946.20    0.891   157.67
1947.20    0.873   156.85
1948.20    0.854   156.00
1949.20    0.834   155.10
1950.20    0.815   154.17
1951.20    0.795   153.18
1952.20    0.774   152.15
1953.20    0.754   151.05
1954.20    0.733   149.90
1955.20    0.712   148.68
1956.20    0.691   147.39
1957.20    0.670   146.01
1958.20    0.649   144.55
1959.20    0.627   142.98
1960.20    0.606   141.31
1961.20    0.585   139.51
1962.20    0.564   137.57
1963.20    0.543   135.49
1964.20    0.522   133.24
1965.20    0.502   130.81
1966.20    0.482   128.17
1967.20    0.463   125.32
1968.20    0.444   122.22
1969.20    0.427   118.86
1970.20    0.411   115.22
1971.20    0.396   111.29
1972.20    0.382   107.07
1973.20    0.370   102.56
1974.20    0.360    97.78
1975.20    0.353    92.76
1976.20    0.347    87.55
1977.20    0.344    82.22
1978.20    0.344    76.82
1979.20    0.346    71.45
1980.20    0.350    66.18
1981.20    0.356    61.06
1982.20    0.365    56.16
1983.20    0.375    51.50
1984.20    0.387    47.11
1985.20    0.400    42.99
1986.20    0.414    39.13
1987.20    0.428    35.54
1988.20    0.443    32.18
1989.20    0.458    29.04
1990.20    0.473    26.10
1991.20    0.487    23.33
1992.20    0.500    20.71
1993.20    0.512    18.22
1994.20    0.523    15.84
1995.20    0.532    13.56
1996.20    0.540    11.34
1997.20    0.546     9.18
1998.20    0.549     7.05
1999.20    0.550     4.94
2000.20    0.548     2.83
2001.20    0.543     0.69
2002.20    0.536   358.50
2003.20    0.525   356.23
2004.20    0.512   353.87
2005.20    0.497   351.37
2006.20    0.478   348.68
2007.20    0.458   345.78
2008.20    0.436   342.58
2009.20    0.412   339.04
2010.20    0.387   335.04
2011.20    0.362   330.50
2012.20    0.338   325.30
2013.20    0.315   319.31
2014.20    0.294   312.41
2015.20    0.277   304.56
2016.20    0.264   295.79
2017.20    0.256   286.32
2018.20    0.255   276.52
2019.20    0.260   266.88
2020.20    0.272   257.83
2021.20    0.288   249.66
2022.20    0.309   242.48
2023.20    0.333   236.27
2024.20    0.359   230.94
2025.20    0.388   226.36
2026.20    0.417   222.41
2027.20    0.447   218.99
2028.20    0.478   216.01
2029.20    0.508   213.38
2030.20    0.539   211.06
2031.20    0.569   208.98
2032.20    0.600   207.12
2033.20    0.629   205.43
2034.20    0.658   203.89
2035.20    0.687   202.48
2036.20    0.715   201.18
2037.20    0.743   199.99
2038.20    0.770   198.87
2039.20    0.796   197.83
2040.20    0.821   196.85
2041.20    0.846   195.94
2042.20    0.870   195.07
2043.20    0.893   194.25
2044.20    0.915   193.47
2045.20    0.937   192.73
2046.20    0.958   192.02
2047.20    0.979   191.34
2048.20    0.998   190.69
2049.20    1.017   190.06
2050.20    1.035   189.46
2051.20    1.053   188.87
2052.20    1.069   188.31
2053.20    1.085   187.76
2054.20    1.101   187.22
2055.20    1.115   186.70
2056.20    1.129   186.20
2057.20    1.142   185.70
2058.20    1.155   185.22
2059.20    1.166   184.75
2060.20    1.178   184.28
2061.20    1.188   183.83
2062.20    1.198   183.38
2063.20    1.207   182.94
2064.20    1.215   182.50
2065.20    1.223   182.08
2066.20    1.230   181.65
2067.20    1.237   181.23
2068.20    1.243   180.82
2069.20    1.248   180.41
2070.20    1.253   180.00
2071.20    1.257   179.60
2072.20    1.261   179.20
2073.20    1.263   178.80
2074.20    1.266   178.40
2075.20    1.267   178.00
2076.20    1.268   177.60
2077.20    1.269   177.21
2078.20    1.269   176.81
2079.20    1.268   176.42
2080.20    1.267   176.02
2081.20    1.265   175.62
2082.20    1.263   175.22
2083.20    1.260   174.82
2084.20    1.257   174.42
2085.20    1.253   174.02
2086.20    1.248   173.61
2087.20    1.243   173.20
2088.20    1.238   172.78
2089.20    1.231   172.37
2090.20    1.225   171.94
2091.20    1.218   171.52
2092.20    1.210   171.08
2093.20    1.202   170.64
2094.20    1.193   170.20
2095.20    1.184   169.75
2096.20    1.174   169.29
2097.20    1.164   168.82
2098.20    1.153   168.35
2099.20    1.142   167.87
2100.20    1.131   167.37
2101.20    1.118   166.87
2102.20    1.106   166.35
2103.20    1.093   165.83
2104.20    1.079   165.29
2105.20    1.065   164.73
2106.20    1.051   164.16
2107.20    1.036   163.58
2108.20    1.021   162.98
2109.20    1.005   162.35

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 16:19:57