Double Star Calculator - Orbit

Orbital Elements for I745

WDS:	I745	WDS ID/Discoverer
P:	205.100	Orbital period (years)
a:	0.542	Semi-major axis (arcseconds)
i:	75.4	Inclination (degrees)
Ω:	244.9	Longitude of ascending node (degrees)
T:	2017.700	Epoch of periastron passage (year)
e:	0.786	Eccentricity
ω:	205.7	Longitude of periastron (degrees)
Start-Year:	1922.45	Year
End-Year:	2127.55	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for I745
Position:	054241.65-670819.5	Epoch-2000 right ascension and declination
WDS-ID:	05427-6708	WDS designation
Discoverer Code:	I745	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	38746	HD catalog number
Hipparcos number:	26904	Hipparcos catalog number
V1:	7.72	Magnitude of the primary
V2:	10.26	Magnitude of the secondary
Equinox:		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:	Tok2024c	Reference

Double Star Orbit for I745

WDS 6th Orbit including measures of I745

-- 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 I745

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.187   229.46
--------------------------
1922.45    0.858   252.59
1923.45    0.855   252.70
1924.45    0.851   252.81
1925.45    0.847   252.93
1926.45    0.843   253.04
1927.45    0.840   253.15
1928.45    0.835   253.27
1929.45    0.831   253.38
1930.45    0.827   253.50
1931.45    0.822   253.62
1932.45    0.818   253.74
1933.45    0.813   253.86
1934.45    0.808   253.98
1935.45    0.803   254.10
1936.45    0.798   254.23
1937.45    0.792   254.36
1938.45    0.787   254.49
1939.45    0.781   254.62
1940.45    0.775   254.75
1941.45    0.769   254.88
1942.45    0.763   255.02
1943.45    0.757   255.16
1944.45    0.751   255.30
1945.45    0.744   255.44
1946.45    0.738   255.59
1947.45    0.731   255.74
1948.45    0.724   255.89
1949.45    0.717   256.05
1950.45    0.710   256.20
1951.45    0.702   256.37
1952.45    0.695   256.53
1953.45    0.687   256.70
1954.45    0.679   256.87
1955.45    0.671   257.05
1956.45    0.663   257.23
1957.45    0.655   257.41
1958.45    0.646   257.60
1959.45    0.638   257.80
1960.45    0.629   258.00
1961.45    0.620   258.20
1962.45    0.611   258.42
1963.45    0.602   258.63
1964.45    0.593   258.86
1965.45    0.583   259.09
1966.45    0.574   259.33
1967.45    0.564   259.58
1968.45    0.554   259.84
1969.45    0.544   260.10
1970.45    0.533   260.38
1971.45    0.523   260.67
1972.45    0.512   260.97
1973.45    0.502   261.28
1974.45    0.491   261.61
1975.45    0.479   261.95
1976.45    0.468   262.31
1977.45    0.457   262.68
1978.45    0.445   263.08
1979.45    0.433   263.50
1980.45    0.421   263.94
1981.45    0.409   264.40
1982.45    0.397   264.90
1983.45    0.384   265.43
1984.45    0.371   265.99
1985.45    0.358   266.59
1986.45    0.345   267.24
1987.45    0.332   267.94
1988.45    0.319   268.70
1989.45    0.305   269.53
1990.45    0.291   270.43
1991.45    0.277   271.43
1992.45    0.263   272.53
1993.45    0.249   273.76
1994.45    0.234   275.14
1995.45    0.220   276.70
1996.45    0.205   278.48
1997.45    0.191   280.53
1998.45    0.176   282.92
1999.45    0.162   285.75
2000.45    0.147   289.13
2001.45    0.133   293.24
2002.45    0.120   298.29
2003.45    0.107   304.58
2004.45    0.096   312.46
2005.45    0.086   322.24
2006.45    0.080   334.03
2007.45    0.076   347.36
2008.45    0.077     1.12
2009.45    0.082    13.99
2010.45    0.089    25.13
2011.45    0.098    34.38
2012.45    0.108    41.99
2013.45    0.117    48.38
2014.45    0.124    53.92
2015.45    0.126    59.04
2016.45    0.122    64.18
2017.45    0.110    70.08
2018.45    0.089    78.23
2019.45    0.063    92.64
2020.45    0.041   124.94
2021.45    0.044   175.37
2022.45    0.067   203.74
2023.45    0.097   216.08
2024.45    0.127   222.58
2025.45    0.157   226.59
2026.45    0.186   229.34
2027.45    0.213   231.37
2028.45    0.240   232.94
2029.45    0.265   234.21
2030.45    0.289   235.26
2031.45    0.312   236.15
2032.45    0.334   236.92
2033.45    0.356   237.60
2034.45    0.376   238.20
2035.45    0.396   238.73
2036.45    0.415   239.22
2037.45    0.434   239.67
2038.45    0.452   240.08
2039.45    0.469   240.46
2040.45    0.485   240.81
2041.45    0.501   241.14
2042.45    0.517   241.45
2043.45    0.532   241.74
2044.45    0.546   242.02
2045.45    0.561   242.28
2046.45    0.574   242.53
2047.45    0.587   242.77
2048.45    0.600   243.00
2049.45    0.613   243.22
2050.45    0.625   243.43
2051.45    0.636   243.63
2052.45    0.648   243.82
2053.45    0.658   244.01
2054.45    0.669   244.19
2055.45    0.679   244.37
2056.45    0.689   244.54
2057.45    0.699   244.71
2058.45    0.708   244.87
2059.45    0.717   245.03
2060.45    0.726   245.18
2061.45    0.735   245.33
2062.45    0.743   245.48
2063.45    0.751   245.62
2064.45    0.759   245.77
2065.45    0.766   245.90
2066.45    0.773   246.04
2067.45    0.780   246.17
2068.45    0.787   246.30
2069.45    0.793   246.43
2070.45    0.800   246.56
2071.45    0.806   246.68
2072.45    0.811   246.81
2073.45    0.817   246.93
2074.45    0.822   247.05
2075.45    0.828   247.17
2076.45    0.833   247.28
2077.45    0.837   247.40
2078.45    0.842   247.51
2079.45    0.846   247.62
2080.45    0.850   247.74
2081.45    0.854   247.85
2082.45    0.858   247.96
2083.45    0.862   248.06
2084.45    0.865   248.17
2085.45    0.868   248.28
2086.45    0.871   248.39
2087.45    0.874   248.49
2088.45    0.877   248.60
2089.45    0.879   248.70
2090.45    0.882   248.80
2091.45    0.884   248.91
2092.45    0.886   249.01
2093.45    0.888   249.11
2094.45    0.889   249.21
2095.45    0.891   249.31
2096.45    0.892   249.42
2097.45    0.893   249.52
2098.45    0.894   249.62
2099.45    0.895   249.72
2100.45    0.896   249.82
2101.45    0.897   249.92
2102.45    0.897   250.02
2103.45    0.897   250.12
2104.45    0.897   250.22
2105.45    0.897   250.32
2106.45    0.897   250.42
2107.45    0.897   250.52
2108.45    0.896   250.62
2109.45    0.895   250.72
2110.45    0.894   250.82
2111.45    0.893   250.92
2112.45    0.892   251.02
2113.45    0.891   251.12
2114.45    0.890   251.22
2115.45    0.888   251.32
2116.45    0.886   251.43
2117.45    0.885   251.53
2118.45    0.883   251.63
2119.45    0.880   251.73
2120.45    0.878   251.84
2121.45    0.876   251.94
2122.45    0.873   252.05
2123.45    0.871   252.15
2124.45    0.868   252.26
2125.45    0.865   252.37
2126.45    0.862   252.47
2127.45    0.858   252.58

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 15:40:14