Double Star Calculator - Orbit

Orbital Elements for A1145

WDS:	A1145	WDS ID/Discoverer
P:	203.600	Orbital period (years)
a:	0.5716	Semi-major axis (arcseconds)
i:	130.3	Inclination (degrees)
Ω:	177.3	Longitude of ascending node (degrees)
T:	1959.700	Epoch of periastron passage (year)
e:	0.429	Eccentricity
ω:	62.4	Longitude of periastron (degrees)
Start-Year:	1923.2	Year
End-Year:	2126.8	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1145
Position:	170813.65-010446.1	Epoch-2000 right ascension and declination
WDS-ID:	17082-0105	WDS designation
Discoverer Code:	A1145	Discover designation and components
ADS number:	10355	Aitken Double Star catalog
HD number:	154895	HD catalog number
Hipparcos number:	83853	Hipparcos catalog number
V1:	6.32	Magnitude of the primary
V2:	7.75	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2005	Date of last observation
Orbit grade:	3	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	WSI2006b	Reference

Double Star Orbit for A1145

WDS 6th Orbit including measures of A1145

-- 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 A1145

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.678   334.27
--------------------------
1923.20    0.453   217.12
1924.20    0.453   215.48
1925.20    0.452   213.83
1926.20    0.451   212.18
1927.20    0.451   210.52
1928.20    0.450   208.85
1929.20    0.449   207.18
1930.20    0.448   205.50
1931.20    0.446   203.81
1932.20    0.444   202.11
1933.20    0.442   200.39
1934.20    0.440   198.66
1935.20    0.438   196.91
1936.20    0.435   195.14
1937.20    0.432   193.34
1938.20    0.428   191.51
1939.20    0.424   189.65
1940.20    0.420   187.76
1941.20    0.415   185.82
1942.20    0.409   183.83
1943.20    0.403   181.79
1944.20    0.397   179.68
1945.20    0.390   177.50
1946.20    0.382   175.23
1947.20    0.374   172.87
1948.20    0.365   170.39
1949.20    0.356   167.79
1950.20    0.346   165.05
1951.20    0.335   162.13
1952.20    0.324   159.02
1953.20    0.313   155.69
1954.20    0.301   152.11
1955.20    0.289   148.24
1956.20    0.278   144.04
1957.20    0.266   139.47
1958.20    0.255   134.50
1959.20    0.245   129.11
1960.20    0.236   123.28
1961.20    0.229   117.02
1962.20    0.223   110.38
1963.20    0.219   103.44
1964.20    0.217    96.34
1965.20    0.218    89.20
1966.20    0.221    82.18
1967.20    0.226    75.42
1968.20    0.234    69.02
1969.20    0.243    63.06
1970.20    0.253    57.55
1971.20    0.265    52.51
1972.20    0.277    47.92
1973.20    0.291    43.73
1974.20    0.305    39.92
1975.20    0.319    36.44
1976.20    0.333    33.26
1977.20    0.347    30.34
1978.20    0.362    27.66
1979.20    0.376    25.17
1980.20    0.390    22.87
1981.20    0.404    20.72
1982.20    0.417    18.72
1983.20    0.430    16.84
1984.20    0.443    15.07
1985.20    0.455    13.39
1986.20    0.468    11.81
1987.20    0.479    10.30
1988.20    0.491     8.87
1989.20    0.502     7.50
1990.20    0.512     6.18
1991.20    0.522     4.92
1992.20    0.532     3.70
1993.20    0.541     2.53
1994.20    0.550     1.40
1995.20    0.559     0.30
1996.20    0.567   359.24
1997.20    0.575   358.21
1998.20    0.583   357.20
1999.20    0.590   356.22
2000.20    0.597   355.26
2001.20    0.603   354.32
2002.20    0.610   353.41
2003.20    0.616   352.51
2004.20    0.621   351.62
2005.20    0.626   350.76
2006.20    0.631   349.90
2007.20    0.636   349.06
2008.20    0.640   348.23
2009.20    0.645   347.42
2010.20    0.648   346.61
2011.20    0.652   345.81
2012.20    0.655   345.02
2013.20    0.658   344.24
2014.20    0.661   343.46
2015.20    0.664   342.69
2016.20    0.666   341.93
2017.20    0.668   341.17
2018.20    0.670   340.42
2019.20    0.672   339.67
2020.20    0.673   338.92
2021.20    0.674   338.18
2022.20    0.675   337.44
2023.20    0.676   336.70
2024.20    0.677   335.96
2025.20    0.677   335.22
2026.20    0.677   334.49
2027.20    0.678   333.75
2028.20    0.677   333.02
2029.20    0.677   332.28
2030.20    0.677   331.55
2031.20    0.676   330.81
2032.20    0.675   330.07
2033.20    0.674   329.33
2034.20    0.673   328.58
2035.20    0.672   327.84
2036.20    0.671   327.09
2037.20    0.669   326.34
2038.20    0.668   325.58
2039.20    0.666   324.82
2040.20    0.664   324.06
2041.20    0.662   323.29
2042.20    0.660   322.52
2043.20    0.658   321.74
2044.20    0.656   320.96
2045.20    0.653   320.17
2046.20    0.651   319.38
2047.20    0.648   318.58
2048.20    0.645   317.77
2049.20    0.642   316.96
2050.20    0.639   316.13
2051.20    0.637   315.31
2052.20    0.633   314.47
2053.20    0.630   313.62
2054.20    0.627   312.77
2055.20    0.624   311.91
2056.20    0.621   311.03
2057.20    0.617   310.15
2058.20    0.614   309.26
2059.20    0.610   308.36
2060.20    0.607   307.45
2061.20    0.603   306.53
2062.20    0.599   305.59
2063.20    0.596   304.65
2064.20    0.592   303.69
2065.20    0.588   302.72
2066.20    0.585   301.74
2067.20    0.581   300.75
2068.20    0.577   299.74
2069.20    0.573   298.72
2070.20    0.570   297.69
2071.20    0.566   296.64
2072.20    0.562   295.58
2073.20    0.558   294.50
2074.20    0.555   293.41
2075.20    0.551   292.31
2076.20    0.547   291.19
2077.20    0.543   290.05
2078.20    0.540   288.90
2079.20    0.536   287.73
2080.20    0.532   286.55
2081.20    0.529   285.35
2082.20    0.525   284.14
2083.20    0.522   282.91
2084.20    0.519   281.66
2085.20    0.515   280.40
2086.20    0.512   279.12
2087.20    0.509   277.82
2088.20    0.506   276.51
2089.20    0.503   275.18
2090.20    0.500   273.84
2091.20    0.497   272.48
2092.20    0.494   271.10
2093.20    0.491   269.71
2094.20    0.488   268.30
2095.20    0.486   266.88
2096.20    0.484   265.44
2097.20    0.481   263.99
2098.20    0.479   262.53
2099.20    0.477   261.05
2100.20    0.475   259.56
2101.20    0.473   258.06
2102.20    0.471   256.54
2103.20    0.469   255.01
2104.20    0.468   253.48
2105.20    0.466   251.93
2106.20    0.465   250.37
2107.20    0.464   248.81
2108.20    0.463   247.23
2109.20    0.461   245.65
2110.20    0.461   244.07
2111.20    0.460   242.47
2112.20    0.459   240.87
2113.20    0.458   239.27
2114.20    0.458   237.66
2115.20    0.457   236.04
2116.20    0.457   234.42
2117.20    0.456   232.80
2118.20    0.456   231.18
2119.20    0.455   229.55
2120.20    0.455   227.92
2121.20    0.455   226.29
2122.20    0.455   224.66
2123.20    0.454   223.03
2124.20    0.454   221.39
2125.20    0.454   219.75
2126.20    0.453   218.11

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 17:34:07