Double Star Calculator - Orbit

Orbital Elements for A1289
WDS: A1289 WDS ID/Discoverer
P: 265.000 Orbital period (years)
a: 0.32 Semi-major axis (arcseconds)
i: 51.5 Inclination (degrees)
Ω: 147.4 Longitude of ascending node (degrees)
T: 2080.000 Epoch of periastron passage (year)
e: 0.633 Eccentricity
ω: 75.7 Longitude of periastron (degrees)
Start-Year: 1892.5 Year
End-Year: 2157.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A1289
Position: 034400.54+522807.8 Epoch-2000 right ascension and declination
WDS-ID: 03440+5228 WDS designation
Discoverer Code: A1289 Discover designation and components
ADS number: 2710 Aitken Double Star catalog
HD number: 23006 HD catalog number
Hipparcos number: 17427 Hipparcos catalog number
V1: 10.07 Magnitude of the primary
V2: 10.38 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 A1289



WDS 6th Orbit including measures of A1289

-- 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 A1289
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.266    93.18
--------------------------
1892.50    0.359     5.90
1893.50    0.359     6.42
1894.50    0.360     6.94
1895.50    0.360     7.46
1896.50    0.360     7.97
1897.50    0.361     8.49
1898.50    0.361     9.00
1899.50    0.361     9.52
1900.50    0.361    10.03
1901.50    0.361    10.54
1902.50    0.361    11.06
1903.50    0.361    11.57
1904.50    0.361    12.09
1905.50    0.361    12.60
1906.50    0.361    13.11
1907.50    0.361    13.63
1908.50    0.361    14.14
1909.50    0.361    14.65
1910.50    0.361    15.17
1911.50    0.361    15.68
1912.50    0.360    16.20
1913.50    0.360    16.72
1914.50    0.360    17.23
1915.50    0.360    17.75
1916.50    0.359    18.27
1917.50    0.359    18.79
1918.50    0.359    19.31
1919.50    0.358    19.83
1920.50    0.358    20.36
1921.50    0.357    20.88
1922.50    0.357    21.41
1923.50    0.356    21.93
1924.50    0.356    22.46
1925.50    0.355    22.99
1926.50    0.355    23.52
1927.50    0.354    24.05
1928.50    0.354    24.59
1929.50    0.353    25.13
1930.50    0.353    25.66
1931.50    0.352    26.20
1932.50    0.352    26.74
1933.50    0.351    27.29
1934.50    0.350    27.83
1935.50    0.350    28.38
1936.50    0.349    28.93
1937.50    0.348    29.48
1938.50    0.347    30.04
1939.50    0.347    30.59
1940.50    0.346    31.15
1941.50    0.345    31.71
1942.50    0.345    32.28
1943.50    0.344    32.84
1944.50    0.343    33.41
1945.50    0.342    33.98
1946.50    0.341    34.56
1947.50    0.341    35.13
1948.50    0.340    35.71
1949.50    0.339    36.29
1950.50    0.338    36.88
1951.50    0.337    37.47
1952.50    0.336    38.06
1953.50    0.336    38.65
1954.50    0.335    39.25
1955.50    0.334    39.85
1956.50    0.333    40.45
1957.50    0.332    41.06
1958.50    0.331    41.67
1959.50    0.330    42.28
1960.50    0.329    42.89
1961.50    0.329    43.51
1962.50    0.328    44.14
1963.50    0.327    44.76
1964.50    0.326    45.39
1965.50    0.325    46.03
1966.50    0.324    46.66
1967.50    0.323    47.30
1968.50    0.322    47.95
1969.50    0.321    48.60
1970.50    0.320    49.25
1971.50    0.319    49.90
1972.50    0.318    50.56
1973.50    0.317    51.23
1974.50    0.316    51.89
1975.50    0.315    52.57
1976.50    0.315    53.24
1977.50    0.314    53.92
1978.50    0.313    54.61
1979.50    0.312    55.29
1980.50    0.311    55.99
1981.50    0.310    56.68
1982.50    0.309    57.38
1983.50    0.308    58.09
1984.50    0.307    58.80
1985.50    0.306    59.51
1986.50    0.305    60.23
1987.50    0.304    60.95
1988.50    0.303    61.68
1989.50    0.302    62.41
1990.50    0.301    63.15
1991.50    0.300    63.89
1992.50    0.299    64.64
1993.50    0.298    65.39
1994.50    0.297    66.14
1995.50    0.296    66.90
1996.50    0.296    67.67
1997.50    0.295    68.44
1998.50    0.294    69.21
1999.50    0.293    69.99
2000.50    0.292    70.78
2001.50    0.291    71.57
2002.50    0.290    72.36
2003.50    0.289    73.17
2004.50    0.288    73.97
2005.50    0.287    74.78
2006.50    0.286    75.60
2007.50    0.285    76.42
2008.50    0.284    77.25
2009.50    0.283    78.08
2010.50    0.282    78.92
2011.50    0.281    79.76
2012.50    0.280    80.62
2013.50    0.279    81.47
2014.50    0.278    82.33
2015.50    0.277    83.20
2016.50    0.276    84.07
2017.50    0.275    84.96
2018.50    0.274    85.84
2019.50    0.273    86.73
2020.50    0.272    87.63
2021.50    0.271    88.54
2022.50    0.270    89.45
2023.50    0.269    90.37
2024.50    0.268    91.30
2025.50    0.267    92.24
2026.50    0.266    93.18
2027.50    0.265    94.13
2028.50    0.264    95.09
2029.50    0.263    96.05
2030.50    0.262    97.03
2031.50    0.261    98.01
2032.50    0.259    99.00
2033.50    0.258   100.00
2034.50    0.257   101.01
2035.50    0.256   102.04
2036.50    0.254   103.07
2037.50    0.253   104.11
2038.50    0.251   105.16
2039.50    0.250   106.23
2040.50    0.249   107.31
2041.50    0.247   108.40
2042.50    0.245   109.51
2043.50    0.244   110.63
2044.50    0.242   111.77
2045.50    0.240   112.92
2046.50    0.238   114.09
2047.50    0.236   115.28
2048.50    0.234   116.49
2049.50    0.232   117.72
2050.50    0.230   118.98
2051.50    0.228   120.26
2052.50    0.225   121.57
2053.50    0.223   122.90
2054.50    0.220   124.27
2055.50    0.217   125.68
2056.50    0.214   127.12
2057.50    0.211   128.60
2058.50    0.208   130.14
2059.50    0.204   131.72
2060.50    0.200   133.36
2061.50    0.196   135.07
2062.50    0.192   136.85
2063.50    0.187   138.71
2064.50    0.183   140.67
2065.50    0.177   142.74
2066.50    0.172   144.94
2067.50    0.166   147.29
2068.50    0.160   149.81
2069.50    0.153   152.54
2070.50    0.146   155.52
2071.50    0.139   158.81
2072.50    0.131   162.48
2073.50    0.123   166.61
2074.50    0.115   171.33
2075.50    0.107   176.77
2076.50    0.099   183.13
2077.50    0.091   190.60
2078.50    0.084   199.38
2079.50    0.079   209.56
2080.50    0.075   220.98
2081.50    0.074   233.15
2082.50    0.075   245.30
2083.50    0.079   256.66
2084.50    0.085   266.73
2085.50    0.092   275.38
2086.50    0.100   282.69
2087.50    0.109   288.85
2088.50    0.118   294.07
2089.50    0.127   298.54
2090.50    0.136   302.41
2091.50    0.145   305.79
2092.50    0.154   308.78
2093.50    0.163   311.46
2094.50    0.171   313.86
2095.50    0.179   316.05
2096.50    0.187   318.05
2097.50    0.194   319.90
2098.50    0.201   321.61
2099.50    0.208   323.21
2100.50    0.215   324.70
2101.50    0.221   326.11
2102.50    0.228   327.44
2103.50    0.233   328.70
2104.50    0.239   329.91
2105.50    0.244   331.05
2106.50    0.250   332.15
2107.50    0.255   333.20
2108.50    0.260   334.22
2109.50    0.264   335.20
2110.50    0.269   336.14
2111.50    0.273   337.05
2112.50    0.277   337.94
2113.50    0.281   338.80
2114.50    0.285   339.64
2115.50    0.289   340.45
2116.50    0.292   341.25
2117.50    0.295   342.03
2118.50    0.299   342.79
2119.50    0.302   343.53
2120.50    0.305   344.26
2121.50    0.308   344.97
2122.50    0.311   345.67
2123.50    0.313   346.36
2124.50    0.316   347.04
2125.50    0.318   347.71
2126.50    0.321   348.36
2127.50    0.323   349.01
2128.50    0.325   349.65
2129.50    0.327   350.28
2130.50    0.329   350.90
2131.50    0.331   351.51
2132.50    0.333   352.12
2133.50    0.335   352.72
2134.50    0.337   353.32
2135.50    0.338   353.91
2136.50    0.340   354.49
2137.50    0.341   355.07
2138.50    0.343   355.64
2139.50    0.344   356.21
2140.50    0.345   356.77
2141.50    0.347   357.33
2142.50    0.348   357.89
2143.50    0.349   358.44
2144.50    0.350   358.99
2145.50    0.351   359.54
2146.50    0.352     0.08
2147.50    0.353     0.62
2148.50    0.354     1.16
2149.50    0.354     1.69
2150.50    0.355     2.22
2151.50    0.356     2.75
2152.50    0.357     3.28
2153.50    0.357     3.81
2154.50    0.358     4.33
2155.50    0.358     4.86
2156.50    0.359     5.38






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 15:13:59



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