Double Star Calculator - Orbit

Orbital Elements for I1306
WDS: I1306 WDS ID/Discoverer
P: 193.700 Orbital period (years)
a: 0.317 Semi-major axis (arcseconds)
i: 84.6 Inclination (degrees)
Ω: 12.8 Longitude of ascending node (degrees)
T: 1989.590 Epoch of periastron passage (year)
e: 0.187 Eccentricity
ω: 149.0 Longitude of periastron (degrees)
Start-Year: 1928.15 Year
End-Year: 2121.85 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for I1306
Position: 170146.35-510751.6 Epoch-2000 right ascension and declination
WDS-ID: 17018-5108 WDS designation
Discoverer Code: I1306 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 153370 HD catalog number
Hipparcos number: 83321 Hipparcos catalog number
V1: 7.23 Magnitude of the primary
V2: 7.27 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 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: Tok2016e Reference

Double Star Orbit for I1306



WDS 6th Orbit including measures of I1306

-- 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 I1306
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.160   201.67
--------------------------
1928.15    0.334    14.47
1929.15    0.330    14.63
1930.15    0.325    14.79
1931.15    0.320    14.96
1932.15    0.315    15.13
1933.15    0.310    15.30
1934.15    0.305    15.49
1935.15    0.299    15.68
1936.15    0.293    15.87
1937.15    0.287    16.08
1938.15    0.280    16.30
1939.15    0.273    16.52
1940.15    0.266    16.76
1941.15    0.259    17.01
1942.15    0.251    17.27
1943.15    0.244    17.56
1944.15    0.236    17.86
1945.15    0.228    18.18
1946.15    0.219    18.52
1947.15    0.210    18.90
1948.15    0.202    19.31
1949.15    0.193    19.75
1950.15    0.183    20.24
1951.15    0.174    20.78
1952.15    0.164    21.39
1953.15    0.154    22.07
1954.15    0.144    22.84
1955.15    0.134    23.73
1956.15    0.124    24.77
1957.15    0.114    26.00
1958.15    0.103    27.47
1959.15    0.093    29.27
1960.15    0.082    31.53
1961.15    0.072    34.45
1962.15    0.062    38.36
1963.15    0.052    43.80
1964.15    0.042    51.75
1965.15    0.034    63.84
1966.15    0.028    82.13
1967.15    0.026   106.11
1968.15    0.029   129.30
1969.15    0.036   146.22
1970.15    0.044   157.31
1971.15    0.054   164.65
1972.15    0.064   169.73
1973.15    0.074   173.41
1974.15    0.084   176.19
1975.15    0.095   178.35
1976.15    0.105   180.09
1977.15    0.115   181.52
1978.15    0.125   182.72
1979.15    0.135   183.73
1980.15    0.145   184.62
1981.15    0.154   185.39
1982.15    0.163   186.07
1983.15    0.172   186.69
1984.15    0.181   187.24
1985.15    0.189   187.74
1986.15    0.197   188.21
1987.15    0.205   188.63
1988.15    0.212   189.03
1989.15    0.218   189.41
1990.15    0.225   189.76
1991.15    0.231   190.09
1992.15    0.236   190.41
1993.15    0.241   190.71
1994.15    0.246   191.00
1995.15    0.250   191.28
1996.15    0.253   191.56
1997.15    0.256   191.82
1998.15    0.259   192.08
1999.15    0.261   192.34
2000.15    0.263   192.59
2001.15    0.264   192.84
2002.15    0.265   193.09
2003.15    0.265   193.33
2004.15    0.264   193.58
2005.15    0.264   193.83
2006.15    0.263   194.08
2007.15    0.261   194.33
2008.15    0.259   194.58
2009.15    0.257   194.84
2010.15    0.254   195.11
2011.15    0.250   195.38
2012.15    0.247   195.66
2013.15    0.243   195.95
2014.15    0.238   196.25
2015.15    0.234   196.56
2016.15    0.228   196.88
2017.15    0.223   197.22
2018.15    0.217   197.58
2019.15    0.211   197.95
2020.15    0.205   198.35
2021.15    0.199   198.77
2022.15    0.192   199.23
2023.15    0.185   199.71
2024.15    0.178   200.24
2025.15    0.170   200.81
2026.15    0.163   201.43
2027.15    0.155   202.12
2028.15    0.147   202.88
2029.15    0.139   203.73
2030.15    0.131   204.68
2031.15    0.122   205.76
2032.15    0.114   207.00
2033.15    0.106   208.43
2034.15    0.097   210.12
2035.15    0.089   212.13
2036.15    0.080   214.56
2037.15    0.072   217.56
2038.15    0.064   221.34
2039.15    0.056   226.20
2040.15    0.048   232.59
2041.15    0.042   241.14
2042.15    0.036   252.52
2043.15    0.033   267.04
2044.15    0.032   283.73
2045.15    0.034   300.10
2046.15    0.038   313.96
2047.15    0.043   324.65
2048.15    0.050   332.65
2049.15    0.058   338.66
2050.15    0.066   343.24
2051.15    0.074   346.81
2052.15    0.082   349.67
2053.15    0.091   351.99
2054.15    0.099   353.91
2055.15    0.108   355.53
2056.15    0.116   356.90
2057.15    0.125   358.09
2058.15    0.133   359.13
2059.15    0.142     0.05
2060.15    0.150     0.86
2061.15    0.158     1.58
2062.15    0.167     2.24
2063.15    0.175     2.83
2064.15    0.183     3.37
2065.15    0.191     3.87
2066.15    0.198     4.33
2067.15    0.206     4.75
2068.15    0.213     5.14
2069.15    0.221     5.51
2070.15    0.228     5.85
2071.15    0.235     6.17
2072.15    0.242     6.48
2073.15    0.249     6.76
2074.15    0.256     7.03
2075.15    0.262     7.29
2076.15    0.268     7.54
2077.15    0.275     7.77
2078.15    0.280     8.00
2079.15    0.286     8.21
2080.15    0.292     8.42
2081.15    0.297     8.62
2082.15    0.303     8.81
2083.15    0.308     8.99
2084.15    0.313     9.17
2085.15    0.317     9.35
2086.15    0.322     9.52
2087.15    0.326     9.68
2088.15    0.330     9.84
2089.15    0.334    10.00
2090.15    0.338    10.15
2091.15    0.341    10.30
2092.15    0.344    10.45
2093.15    0.347    10.59
2094.15    0.350    10.73
2095.15    0.353    10.87
2096.15    0.355    11.01
2097.15    0.357    11.15
2098.15    0.359    11.28
2099.15    0.361    11.41
2100.15    0.363    11.55
2101.15    0.364    11.68
2102.15    0.365    11.81
2103.15    0.366    11.94
2104.15    0.366    12.06
2105.15    0.366    12.19
2106.15    0.366    12.32
2107.15    0.366    12.45
2108.15    0.366    12.58
2109.15    0.365    12.71
2110.15    0.364    12.84
2111.15    0.363    12.97
2112.15    0.361    13.10
2113.15    0.360    13.23
2114.15    0.358    13.37
2115.15    0.355    13.50
2116.15    0.353    13.64
2117.15    0.350    13.78
2118.15    0.347    13.92
2119.15    0.344    14.07
2120.15    0.340    14.22
2121.15    0.337    14.37






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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 17:33:07



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