Double Star Calculator - Orbit

Orbital Elements for A671
WDS: A671 WDS ID/Discoverer
P: 159.490 Orbital period (years)
a: 0.314 Semi-major axis (arcseconds)
i: 132.4 Inclination (degrees)
Ω: 112.3 Longitude of ascending node (degrees)
T: 1965.150 Epoch of periastron passage (year)
e: 0.741 Eccentricity
ω: 115.2 Longitude of periastron (degrees)
Start-Year: 1945.255 Year
End-Year: 2104.745 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A671
Position: 070116.54-090608.1 Epoch-2000 right ascension and declination
WDS-ID: 07013-0906 WDS designation
Discoverer Code: A671 Discover designation and components
ADS number: 5703 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 9.8 Magnitude of the primary
V2: 9.9 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2018 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: Doc2018l Reference

Double Star Orbit for A671



WDS 6th Orbit including measures of A671

-- 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 A671
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.370   179.58
--------------------------
1945.26    0.293   126.65
1946.26    0.285   125.45
1947.26    0.277   124.17
1948.26    0.268   122.81
1949.26    0.259   121.36
1950.26    0.249   119.80
1951.26    0.239   118.11
1952.26    0.229   116.27
1953.26    0.217   114.24
1954.26    0.205   111.98
1955.26    0.192   109.43
1956.26    0.179   106.50
1957.26    0.164   103.06
1958.26    0.148    98.92
1959.26    0.132    93.77
1960.26    0.114    87.06
1961.26    0.096    77.82
1962.26    0.078    64.27
1963.26    0.063    43.53
1964.26    0.057    14.43
1965.26    0.062   344.55
1966.26    0.074   322.21
1967.26    0.089   306.92
1968.26    0.103   295.90
1969.26    0.115   287.37
1970.26    0.125   280.38
1971.26    0.135   274.43
1972.26    0.143   269.22
1973.26    0.151   264.56
1974.26    0.158   260.33
1975.26    0.164   256.44
1976.26    0.171   252.85
1977.26    0.176   249.50
1978.26    0.182   246.37
1979.26    0.188   243.42
1980.26    0.193   240.63
1981.26    0.198   238.00
1982.26    0.203   235.49
1983.26    0.208   233.11
1984.26    0.213   230.83
1985.26    0.218   228.66
1986.26    0.222   226.58
1987.26    0.227   224.59
1988.26    0.232   222.67
1989.26    0.236   220.84
1990.26    0.241   219.06
1991.26    0.245   217.36
1992.26    0.250   215.71
1993.26    0.254   214.12
1994.26    0.258   212.59
1995.26    0.263   211.10
1996.26    0.267   209.67
1997.26    0.271   208.27
1998.26    0.275   206.92
1999.26    0.279   205.61
2000.26    0.283   204.33
2001.26    0.287   203.09
2002.26    0.291   201.89
2003.26    0.295   200.71
2004.26    0.299   199.57
2005.26    0.303   198.46
2006.26    0.306   197.37
2007.26    0.310   196.31
2008.26    0.314   195.27
2009.26    0.317   194.26
2010.26    0.321   193.27
2011.26    0.324   192.30
2012.26    0.328   191.35
2013.26    0.331   190.42
2014.26    0.334   189.51
2015.26    0.338   188.62
2016.26    0.341   187.74
2017.26    0.344   186.88
2018.26    0.347   186.04
2019.26    0.350   185.21
2020.26    0.353   184.39
2021.26    0.356   183.59
2022.26    0.359   182.80
2023.26    0.362   182.02
2024.26    0.364   181.26
2025.26    0.367   180.50
2026.26    0.370   179.76
2027.26    0.372   179.03
2028.26    0.375   178.31
2029.26    0.377   177.59
2030.26    0.380   176.89
2031.26    0.382   176.19
2032.26    0.384   175.51
2033.26    0.386   174.83
2034.26    0.388   174.16
2035.26    0.390   173.49
2036.26    0.392   172.83
2037.26    0.394   172.18
2038.26    0.396   171.54
2039.26    0.398   170.90
2040.26    0.400   170.26
2041.26    0.401   169.64
2042.26    0.403   169.01
2043.26    0.404   168.40
2044.26    0.406   167.78
2045.26    0.407   167.17
2046.26    0.408   166.57
2047.26    0.410   165.96
2048.26    0.411   165.37
2049.26    0.412   164.77
2050.26    0.413   164.18
2051.26    0.414   163.59
2052.26    0.415   163.00
2053.26    0.415   162.41
2054.26    0.416   161.83
2055.26    0.417   161.25
2056.26    0.417   160.67
2057.26    0.417   160.09
2058.26    0.418   159.51
2059.26    0.418   158.94
2060.26    0.418   158.36
2061.26    0.418   157.78
2062.26    0.418   157.21
2063.26    0.418   156.63
2064.26    0.418   156.05
2065.26    0.417   155.48
2066.26    0.417   154.90
2067.26    0.417   154.32
2068.26    0.416   153.74
2069.26    0.415   153.15
2070.26    0.414   152.57
2071.26    0.413   151.98
2072.26    0.412   151.39
2073.26    0.411   150.79
2074.26    0.410   150.19
2075.26    0.408   149.59
2076.26    0.407   148.99
2077.26    0.405   148.37
2078.26    0.403   147.76
2079.26    0.402   147.14
2080.26    0.400   146.51
2081.26    0.397   145.87
2082.26    0.395   145.23
2083.26    0.393   144.58
2084.26    0.390   143.92
2085.26    0.387   143.26
2086.26    0.384   142.58
2087.26    0.381   141.89
2088.26    0.378   141.19
2089.26    0.374   140.48
2090.26    0.371   139.75
2091.26    0.367   139.01
2092.26    0.363   138.26
2093.26    0.359   137.48
2094.26    0.354   136.69
2095.26    0.350   135.88
2096.26    0.345   135.04
2097.26    0.340   134.18
2098.26    0.334   133.29
2099.26    0.329   132.38
2100.26    0.323   131.43
2101.26    0.317   130.44
2102.26    0.310   129.42
2103.26    0.303   128.35
2104.26    0.296   127.22






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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 15:53:39



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