Double Star Calculator - Orbit

Orbital Elements for A79AB

WDS:	A79AB	WDS ID/Discoverer
P:	232.000	Orbital period (years)
a:	0.748	Semi-major axis (arcseconds)
i:	100.4	Inclination (degrees)
Ω:	113.7	Longitude of ascending node (degrees)
T:	1986.630	Epoch of periastron passage (year)
e:	0.962	Eccentricity
ω:	250.0	Longitude of periastron (degrees)
Start-Year:	1909.0	Year
End-Year:	2141.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A79AB
Position:	122700.77-033205.6	Epoch-2000 right ascension and declination
WDS-ID:	12270-0332	WDS designation
Discoverer Code:	A79AB	Discover designation and components
ADS number:	8552	Aitken Double Star catalog
HD number:	108361	HD catalog number
Hipparcos number:	60749	Hipparcos catalog number
V1:	8.89	Magnitude of the primary
V2:	10.03	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Tok2017c	Reference

Double Star Orbit for A79AB

WDS 6th Orbit including measures of A79AB

-- 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 A79AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.546    96.71
--------------------------
1909.00    0.436    80.76
1910.00    0.432    80.53
1911.00    0.428    80.30
1912.00    0.424    80.06
1913.00    0.419    79.82
1914.00    0.415    79.58
1915.00    0.411    79.33
1916.00    0.406    79.07
1917.00    0.402    78.81
1918.00    0.397    78.54
1919.00    0.393    78.26
1920.00    0.388    77.98
1921.00    0.383    77.69
1922.00    0.379    77.40
1923.00    0.374    77.10
1924.00    0.369    76.79
1925.00    0.364    76.47
1926.00    0.359    76.14
1927.00    0.354    75.81
1928.00    0.349    75.46
1929.00    0.344    75.11
1930.00    0.339    74.74
1931.00    0.334    74.36
1932.00    0.329    73.97
1933.00    0.324    73.57
1934.00    0.319    73.16
1935.00    0.313    72.73
1936.00    0.308    72.28
1937.00    0.303    71.83
1938.00    0.297    71.35
1939.00    0.292    70.86
1940.00    0.286    70.34
1941.00    0.281    69.81
1942.00    0.275    69.26
1943.00    0.270    68.68
1944.00    0.264    68.08
1945.00    0.258    67.45
1946.00    0.252    66.79
1947.00    0.247    66.11
1948.00    0.241    65.39
1949.00    0.235    64.63
1950.00    0.229    63.84
1951.00    0.223    63.00
1952.00    0.217    62.12
1953.00    0.211    61.19
1954.00    0.206    60.20
1955.00    0.200    59.16
1956.00    0.194    58.05
1957.00    0.188    56.87
1958.00    0.182    55.62
1959.00    0.176    54.28
1960.00    0.170    52.84
1961.00    0.164    51.30
1962.00    0.158    49.64
1963.00    0.152    47.85
1964.00    0.146    45.92
1965.00    0.140    43.83
1966.00    0.135    41.57
1967.00    0.129    39.10
1968.00    0.124    36.42
1969.00    0.118    33.50
1970.00    0.113    30.32
1971.00    0.109    26.84
1972.00    0.104    23.06
1973.00    0.100    18.95
1974.00    0.096    14.49
1975.00    0.093     9.69
1976.00    0.090     4.55
1977.00    0.087   359.10
1978.00    0.086   353.37
1979.00    0.084   347.42
1980.00    0.083   341.31
1981.00    0.083   335.09
1982.00    0.082   328.80
1983.00    0.081   322.41
1984.00    0.079   315.82
1985.00    0.074   308.66
1986.00    0.057   299.13
1987.00    0.038   120.46
1988.00    0.110   111.56
1989.00    0.154   109.10
1990.00    0.188   107.63
1991.00    0.215   106.57
1992.00    0.239   105.74
1993.00    0.260   105.05
1994.00    0.279   104.46
1995.00    0.296   103.95
1996.00    0.312   103.48
1997.00    0.327   103.06
1998.00    0.341   102.68
1999.00    0.354   102.33
2000.00    0.366   101.99
2001.00    0.377   101.68
2002.00    0.388   101.39
2003.00    0.398   101.12
2004.00    0.408   100.85
2005.00    0.417   100.60
2006.00    0.426   100.36
2007.00    0.435   100.13
2008.00    0.443    99.91
2009.00    0.451    99.69
2010.00    0.458    99.49
2011.00    0.465    99.29
2012.00    0.472    99.09
2013.00    0.479    98.90
2014.00    0.485    98.72
2015.00    0.491    98.54
2016.00    0.497    98.36
2017.00    0.502    98.19
2018.00    0.508    98.02
2019.00    0.513    97.86
2020.00    0.518    97.70
2021.00    0.523    97.54
2022.00    0.527    97.38
2023.00    0.532    97.23
2024.00    0.536    97.08
2025.00    0.540    96.93
2026.00    0.544    96.79
2027.00    0.548    96.64
2028.00    0.551    96.50
2029.00    0.555    96.36
2030.00    0.558    96.22
2031.00    0.561    96.09
2032.00    0.564    95.95
2033.00    0.567    95.82
2034.00    0.570    95.69
2035.00    0.573    95.55
2036.00    0.575    95.42
2037.00    0.578    95.30
2038.00    0.580    95.17
2039.00    0.582    95.04
2040.00    0.584    94.92
2041.00    0.586    94.79
2042.00    0.588    94.67
2043.00    0.590    94.54
2044.00    0.592    94.42
2045.00    0.593    94.30
2046.00    0.595    94.18
2047.00    0.596    94.06
2048.00    0.598    93.94
2049.00    0.599    93.82
2050.00    0.600    93.70
2051.00    0.601    93.58
2052.00    0.602    93.46
2053.00    0.603    93.34
2054.00    0.604    93.23
2055.00    0.604    93.11
2056.00    0.605    92.99
2057.00    0.605    92.87
2058.00    0.606    92.76
2059.00    0.606    92.64
2060.00    0.607    92.52
2061.00    0.607    92.41
2062.00    0.607    92.29
2063.00    0.607    92.18
2064.00    0.607    92.06
2065.00    0.607    91.94
2066.00    0.607    91.83
2067.00    0.607    91.71
2068.00    0.607    91.60
2069.00    0.606    91.48
2070.00    0.606    91.36
2071.00    0.605    91.25
2072.00    0.605    91.13
2073.00    0.604    91.01
2074.00    0.604    90.89
2075.00    0.603    90.78
2076.00    0.602    90.66
2077.00    0.601    90.54
2078.00    0.600    90.42
2079.00    0.600    90.30
2080.00    0.599    90.18
2081.00    0.597    90.06
2082.00    0.596    89.94
2083.00    0.595    89.82
2084.00    0.594    89.70
2085.00    0.593    89.58
2086.00    0.591    89.46
2087.00    0.590    89.34
2088.00    0.588    89.21
2089.00    0.587    89.09
2090.00    0.585    88.96
2091.00    0.583    88.84
2092.00    0.582    88.71
2093.00    0.580    88.59
2094.00    0.578    88.46
2095.00    0.576    88.33
2096.00    0.574    88.20
2097.00    0.572    88.07
2098.00    0.570    87.94
2099.00    0.568    87.81
2100.00    0.566    87.67
2101.00    0.564    87.54
2102.00    0.562    87.41
2103.00    0.559    87.27
2104.00    0.557    87.13
2105.00    0.555    86.99
2106.00    0.552    86.85
2107.00    0.550    86.71
2108.00    0.547    86.57
2109.00    0.545    86.43
2110.00    0.542    86.28
2111.00    0.539    86.14
2112.00    0.537    85.99
2113.00    0.534    85.84
2114.00    0.531    85.69
2115.00    0.528    85.53
2116.00    0.525    85.38
2117.00    0.522    85.22
2118.00    0.519    85.07
2119.00    0.516    84.91
2120.00    0.513    84.74
2121.00    0.510    84.58
2122.00    0.506    84.42
2123.00    0.503    84.25
2124.00    0.500    84.08
2125.00    0.497    83.91
2126.00    0.493    83.73
2127.00    0.490    83.55
2128.00    0.486    83.37
2129.00    0.483    83.19
2130.00    0.479    83.01
2131.00    0.475    82.82
2132.00    0.472    82.63
2133.00    0.468    82.43
2134.00    0.464    82.24
2135.00    0.460    82.04
2136.00    0.456    81.83
2137.00    0.452    81.62
2138.00    0.448    81.41
2139.00    0.444    81.20
2140.00    0.440    80.98

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 16:46:18