Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:44:09

Orbital Elements for A1281AB
WDS: A1281AB WDS ID/Discoverer
P: 158.270 Orbital period (years)
a: 0.52 Semi-major axis (arcseconds)
i: 43.8 Inclination (degrees)
Ω: 167.5 Longitude of ascending node (degrees)
T: 1938.150 Epoch of periastron passage (year)
e: 0.354 Eccentricity
ω: 149.6 Longitude of periastron (degrees)
Start-Year: 1946.0 Year
End-Year: 2104.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1281AB
Position: 025139.69+455844.9 Epoch-2000 right ascension and declination
WDS-ID: 02517+4559 WDS designation
Discoverer Code: A1281AB Discover designation and components
ADS number: 2173 Aitken Double Star catalog
HD number: 17647 HD catalog number
Hipparcos number: 13336 Hipparcos catalog number
V1: 8.97 Magnitude of the primary
V2: 10.72 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2012 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A1281AB



WDS 6th Orbit including measures of A1281AB

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of A1281AB
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.677    151.7
-------------------------
1946.0     0.354    353.3
1947.0     0.357    356.6
1948.0     0.359    359.8
1949.0     0.361      3.1
1950.0     0.362      6.2
1951.0     0.363      9.4
1952.0     0.364     12.5
1953.0     0.364     15.7
1954.0     0.364     18.8
1955.0     0.364     21.9
1956.0     0.364     25.1
1957.0     0.364     28.2
1958.0     0.364     31.3
1959.0     0.364     34.4
1960.0     0.365     37.6
1961.0     0.365     40.7
1962.0     0.366     43.8
1963.0     0.367     46.9
1964.0     0.369     49.9
1965.0     0.370     53.0
1966.0     0.372     56.0
1967.0     0.375     59.0
1968.0     0.378     61.9
1969.0     0.381     64.8
1970.0     0.384     67.6
1971.0     0.388     70.4
1972.0     0.392     73.1
1973.0     0.397     75.8
1974.0     0.402     78.4
1975.0     0.407     81.0
1976.0     0.412     83.4
1977.0     0.418     85.8
1978.0     0.424     88.2
1979.0     0.430     90.5
1980.0     0.436     92.7
1981.0     0.443     94.8
1982.0     0.449     96.9
1983.0     0.456     99.0
1984.0     0.463    100.9
1985.0     0.470    102.8
1986.0     0.477    104.7
1987.0     0.484    106.5
1988.0     0.491    108.2
1989.0     0.498    109.9
1990.0     0.505    111.6
1991.0     0.512    113.2
1992.0     0.519    114.7
1993.0     0.526    116.3
1994.0     0.533    117.7
1995.0     0.540    119.2
1996.0     0.547    120.6
1997.0     0.554    122.0
1998.0     0.561    123.3
1999.0     0.567    124.6
2000.0     0.574    125.9
2001.0     0.580    127.1
2002.0     0.586    128.3
2003.0     0.592    129.5
2004.0     0.598    130.7
2005.0     0.604    131.9
2006.0     0.610    133.0
2007.0     0.615    134.1
2008.0     0.620    135.2
2009.0     0.625    136.2
2010.0     0.630    137.3
2011.0     0.635    138.3
2012.0     0.639    139.4
2013.0     0.644    140.4
2014.0     0.648    141.4
2015.0     0.652    142.3
2016.0     0.655    143.3
2017.0     0.659    144.3
2018.0     0.662    145.2
2019.0     0.665    146.2
2020.0     0.667    147.1
2021.0     0.670    148.0
2022.0     0.672    149.0
2023.0     0.674    149.9
2024.0     0.675    150.8
2025.0     0.677    151.7
2026.0     0.678    152.6
2027.0     0.679    153.5
2028.0     0.679    154.4
2029.0     0.679    155.3
2030.0     0.679    156.2
2031.0     0.679    157.1
2032.0     0.679    158.0
2033.0     0.678    158.9
2034.0     0.676    159.8
2035.0     0.675    160.7
2036.0     0.673    161.6
2037.0     0.671    162.6
2038.0     0.669    163.5
2039.0     0.666    164.4
2040.0     0.663    165.4
2041.0     0.659    166.3
2042.0     0.656    167.3
2043.0     0.652    168.2
2044.0     0.647    169.2
2045.0     0.643    170.2
2046.0     0.638    171.2
2047.0     0.632    172.3
2048.0     0.626    173.3
2049.0     0.620    174.4
2050.0     0.614    175.5
2051.0     0.607    176.6
2052.0     0.600    177.7
2053.0     0.593    178.9
2054.0     0.585    180.1
2055.0     0.577    181.3
2056.0     0.568    182.6
2057.0     0.559    183.9
2058.0     0.550    185.2
2059.0     0.541    186.6
2060.0     0.531    188.1
2061.0     0.521    189.6
2062.0     0.510    191.1
2063.0     0.500    192.8
2064.0     0.489    194.5
2065.0     0.477    196.3
2066.0     0.466    198.1
2067.0     0.454    200.1
2068.0     0.442    202.2
2069.0     0.430    204.3
2070.0     0.418    206.7
2071.0     0.405    209.1
2072.0     0.393    211.7
2073.0     0.381    214.5
2074.0     0.369    217.4
2075.0     0.357    220.6
2076.0     0.345    224.0
2077.0     0.334    227.6
2078.0     0.323    231.4
2079.0     0.313    235.6
2080.0     0.303    239.9
2081.0     0.295    244.6
2082.0     0.287    249.5
2083.0     0.281    254.6
2084.0     0.276    260.0
2085.0     0.273    265.5
2086.0     0.271    271.1
2087.0     0.270    276.8
2088.0     0.271    282.5
2089.0     0.273    288.1
2090.0     0.276    293.6
2091.0     0.281    298.9
2092.0     0.286    304.1
2093.0     0.292    309.1
2094.0     0.298    313.8
2095.0     0.305    318.4
2096.0     0.312    322.8
2097.0     0.318    327.0
2098.0     0.325    331.0
2099.0     0.331    334.8
2100.0     0.337    338.6
2101.0     0.342    342.2
2102.0     0.346    345.7
2103.0     0.350    349.1



 

Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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