Double Star Calculator - Orbit

Orbital Elements for A2575

WDS:	A2575	WDS ID/Discoverer
P:	230.000	Orbital period (years)
a:	0.43	Semi-major axis (arcseconds)
i:	67.0	Inclination (degrees)
Ω:	128.6	Longitude of ascending node (degrees)
T:	2080.000	Epoch of periastron passage (year)
e:	0.596	Eccentricity
ω:	75.2	Longitude of periastron (degrees)
Start-Year:	1910.0	Year
End-Year:	2140.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2575
Position:	112630.78+080541.0	Epoch-2000 right ascension and declination
WDS-ID:	11265+0806	WDS designation
Discoverer Code:	A2575	Discover designation and components
ADS number:	8160	Aitken Double Star catalog
HD number:	99420	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.1	Magnitude of the primary
V2:	10.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1995	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:	USN2002	Reference

Double Star Orbit for A2575

WDS 6th Orbit including measures of A2575

-- 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 A2575

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.274    82.95
--------------------------
1910.00    0.435   329.56
1911.00    0.434   330.04
1912.00    0.433   330.53
1913.00    0.432   331.01
1914.00    0.432   331.50
1915.00    0.431   331.99
1916.00    0.429   332.48
1917.00    0.428   332.97
1918.00    0.427   333.47
1919.00    0.426   333.97
1920.00    0.424   334.47
1921.00    0.423   334.98
1922.00    0.421   335.49
1923.00    0.419   336.00
1924.00    0.418   336.52
1925.00    0.416   337.04
1926.00    0.414   337.57
1927.00    0.412   338.10
1928.00    0.410   338.64
1929.00    0.408   339.18
1930.00    0.406   339.73
1931.00    0.404   340.29
1932.00    0.401   340.85
1933.00    0.399   341.41
1934.00    0.397   341.99
1935.00    0.395   342.57
1936.00    0.392   343.15
1937.00    0.390   343.75
1938.00    0.387   344.35
1939.00    0.385   344.96
1940.00    0.382   345.58
1941.00    0.379   346.20
1942.00    0.377   346.84
1943.00    0.374   347.48
1944.00    0.372   348.14
1945.00    0.369   348.80
1946.00    0.366   349.47
1947.00    0.363   350.15
1948.00    0.361   350.85
1949.00    0.358   351.55
1950.00    0.355   352.27
1951.00    0.352   352.99
1952.00    0.349   353.73
1953.00    0.347   354.48
1954.00    0.344   355.24
1955.00    0.341   356.02
1956.00    0.338   356.80
1957.00    0.335   357.61
1958.00    0.332   358.42
1959.00    0.330   359.25
1960.00    0.327     0.09
1961.00    0.324     0.95
1962.00    0.321     1.82
1963.00    0.318     2.71
1964.00    0.316     3.61
1965.00    0.313     4.53
1966.00    0.310     5.47
1967.00    0.308     6.42
1968.00    0.305     7.39
1969.00    0.302     8.37
1970.00    0.300     9.38
1971.00    0.297    10.39
1972.00    0.295    11.43
1973.00    0.292    12.48
1974.00    0.290    13.56
1975.00    0.288    14.65
1976.00    0.285    15.75
1977.00    0.283    16.88
1978.00    0.281    18.02
1979.00    0.279    19.18
1980.00    0.277    20.36
1981.00    0.275    21.56
1982.00    0.273    22.77
1983.00    0.271    24.00
1984.00    0.269    25.25
1985.00    0.267    26.51
1986.00    0.266    27.79
1987.00    0.264    29.08
1988.00    0.263    30.39
1989.00    0.261    31.72
1990.00    0.260    33.05
1991.00    0.259    34.40
1992.00    0.258    35.77
1993.00    0.257    37.14
1994.00    0.256    38.52
1995.00    0.255    39.92
1996.00    0.254    41.32
1997.00    0.253    42.73
1998.00    0.253    44.14
1999.00    0.253    45.57
2000.00    0.252    46.99
2001.00    0.252    48.42
2002.00    0.252    49.85
2003.00    0.252    51.28
2004.00    0.252    52.72
2005.00    0.252    54.15
2006.00    0.252    55.58
2007.00    0.253    57.00
2008.00    0.253    58.42
2009.00    0.254    59.84
2010.00    0.254    61.25
2011.00    0.255    62.65
2012.00    0.256    64.04
2013.00    0.257    65.42
2014.00    0.257    66.80
2015.00    0.259    68.16
2016.00    0.260    69.52
2017.00    0.261    70.86
2018.00    0.262    72.19
2019.00    0.263    73.50
2020.00    0.265    74.81
2021.00    0.266    76.10
2022.00    0.267    77.37
2023.00    0.269    78.64
2024.00    0.270    79.89
2025.00    0.272    81.12
2026.00    0.273    82.34
2027.00    0.275    83.55
2028.00    0.277    84.74
2029.00    0.278    85.92
2030.00    0.280    87.09
2031.00    0.281    88.24
2032.00    0.283    89.38
2033.00    0.285    90.51
2034.00    0.286    91.62
2035.00    0.288    92.73
2036.00    0.289    93.82
2037.00    0.291    94.90
2038.00    0.292    95.97
2039.00    0.293    97.03
2040.00    0.294    98.08
2041.00    0.296    99.13
2042.00    0.297   100.16
2043.00    0.298   101.19
2044.00    0.299   102.21
2045.00    0.299   103.23
2046.00    0.300   104.24
2047.00    0.300   105.25
2048.00    0.301   106.25
2049.00    0.301   107.26
2050.00    0.301   108.26
2051.00    0.300   109.27
2052.00    0.300   110.28
2053.00    0.299   111.29
2054.00    0.298   112.31
2055.00    0.296   113.34
2056.00    0.295   114.38
2057.00    0.293   115.43
2058.00    0.290   116.50
2059.00    0.288   117.59
2060.00    0.284   118.70
2061.00    0.281   119.84
2062.00    0.276   121.01
2063.00    0.272   122.22
2064.00    0.266   123.48
2065.00    0.260   124.79
2066.00    0.253   126.16
2067.00    0.246   127.62
2068.00    0.238   129.18
2069.00    0.228   130.85
2070.00    0.218   132.67
2071.00    0.207   134.68
2072.00    0.195   136.92
2073.00    0.182   139.47
2074.00    0.168   142.43
2075.00    0.153   145.95
2076.00    0.138   150.24
2077.00    0.122   155.63
2078.00    0.106   162.62
2079.00    0.092   171.95
2080.00    0.079   184.53
2081.00    0.071   200.88
2082.00    0.069   219.79
2083.00    0.073   238.04
2084.00    0.084   252.98
2085.00    0.097   264.21
2086.00    0.113   272.50
2087.00    0.129   278.72
2088.00    0.146   283.54
2089.00    0.162   287.36
2090.00    0.179   290.49
2091.00    0.194   293.11
2092.00    0.209   295.35
2093.00    0.223   297.29
2094.00    0.237   299.01
2095.00    0.250   300.54
2096.00    0.262   301.92
2097.00    0.274   303.19
2098.00    0.285   304.35
2099.00    0.296   305.43
2100.00    0.305   306.43
2101.00    0.315   307.38
2102.00    0.324   308.27
2103.00    0.332   309.11
2104.00    0.340   309.92
2105.00    0.347   310.68
2106.00    0.355   311.42
2107.00    0.361   312.13
2108.00    0.367   312.81
2109.00    0.373   313.48
2110.00    0.379   314.12
2111.00    0.384   314.74
2112.00    0.389   315.35
2113.00    0.393   315.94
2114.00    0.398   316.52
2115.00    0.402   317.09
2116.00    0.405   317.65
2117.00    0.409   318.20
2118.00    0.412   318.74
2119.00    0.415   319.27
2120.00    0.418   319.79
2121.00    0.420   320.31
2122.00    0.422   320.82
2123.00    0.424   321.33
2124.00    0.426   321.83
2125.00    0.428   322.33
2126.00    0.430   322.82
2127.00    0.431   323.31
2128.00    0.432   323.80
2129.00    0.433   324.29
2130.00    0.434   324.77
2131.00    0.435   325.25
2132.00    0.435   325.73
2133.00    0.435   326.21
2134.00    0.436   326.69
2135.00    0.436   327.17
2136.00    0.436   327.65
2137.00    0.436   328.12
2138.00    0.435   328.60
2139.00    0.435   329.08

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 16:38:30