Double Star Calculator - Orbit

Orbital Elements for A725
WDS: A725 WDS ID/Discoverer
P: 189.510 Orbital period (years)
a: 0.7964 Semi-major axis (arcseconds)
i: 68.23 Inclination (degrees)
Ω: 225.11 Longitude of ascending node (degrees)
T: 1960.241 Epoch of periastron passage (year)
e: 0.5259 Eccentricity
ω: 344.73 Longitude of periastron (degrees)
Start-Year: 1930.245 Year
End-Year: 2119.755 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for A725
Position: 202057.88+443629.7 Epoch-2000 right ascension and declination
WDS-ID: 20210+4437 WDS designation
Discoverer Code: A725 Discover designation and components
ADS number: 13744 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 100341 Hipparcos catalog number
V1: 9.46 Magnitude of the primary
V2: 10.23 Magnitude of the secondary
Equinox: Equinox
Date: Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: FSU2025 Reference

Double Star Orbit for A725



WDS 6th Orbit including measures of A725

-- 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 A725
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.950    30.04
--------------------------
1930.24    0.580    65.80
1931.24    0.556    66.98
1932.24    0.532    68.27
1933.24    0.507    69.68
1934.24    0.481    71.24
1935.24    0.455    72.97
1936.24    0.429    74.91
1937.24    0.403    77.11
1938.24    0.377    79.61
1939.24    0.351    82.49
1940.24    0.325    85.83
1941.24    0.299    89.74
1942.24    0.275    94.36
1943.24    0.252    99.86
1944.24    0.231   106.41
1945.24    0.212   114.19
1946.24    0.198   123.25
1947.24    0.189   133.46
1948.24    0.185   144.42
1949.24    0.187   155.46
1950.24    0.195   165.92
1951.24    0.208   175.32
1952.24    0.224   183.48
1953.24    0.243   190.46
1954.24    0.263   196.40
1955.24    0.284   201.49
1956.24    0.304   205.90
1957.24    0.322   209.78
1958.24    0.339   213.25
1959.24    0.354   216.41
1960.24    0.366   219.34
1961.24    0.375   222.10
1962.24    0.382   224.75
1963.24    0.385   227.34
1964.24    0.385   229.90
1965.24    0.383   232.47
1966.24    0.378   235.10
1967.24    0.371   237.81
1968.24    0.362   240.64
1969.24    0.351   243.63
1970.24    0.340   246.82
1971.24    0.327   250.24
1972.24    0.315   253.93
1973.24    0.302   257.93
1974.24    0.289   262.29
1975.24    0.277   267.03
1976.24    0.267   272.18
1977.24    0.257   277.72
1978.24    0.250   283.63
1979.24    0.245   289.85
1980.24    0.242   296.29
1981.24    0.241   302.81
1982.24    0.244   309.28
1983.24    0.248   315.57
1984.24    0.256   321.56
1985.24    0.265   327.17
1986.24    0.276   332.37
1987.24    0.289   337.13
1988.24    0.304   341.45
1989.24    0.319   345.38
1990.24    0.336   348.92
1991.24    0.353   352.13
1992.24    0.371   355.03
1993.24    0.389   357.66
1994.24    0.408     0.06
1995.24    0.427     2.24
1996.24    0.446     4.24
1997.24    0.465     6.07
1998.24    0.485     7.75
1999.24    0.504     9.31
2000.24    0.523    10.75
2001.24    0.542    12.09
2002.24    0.561    13.34
2003.24    0.580    14.51
2004.24    0.599    15.60
2005.24    0.617    16.63
2006.24    0.636    17.60
2007.24    0.654    18.52
2008.24    0.672    19.38
2009.24    0.689    20.20
2010.24    0.707    20.98
2011.24    0.724    21.73
2012.24    0.741    22.43
2013.24    0.757    23.11
2014.24    0.774    23.76
2015.24    0.790    24.38
2016.24    0.806    24.98
2017.24    0.821    25.55
2018.24    0.836    26.11
2019.24    0.851    26.64
2020.24    0.866    27.16
2021.24    0.880    27.66
2022.24    0.894    28.14
2023.24    0.908    28.61
2024.24    0.921    29.06
2025.24    0.934    29.50
2026.24    0.947    29.93
2027.24    0.960    30.35
2028.24    0.972    30.76
2029.24    0.984    31.16
2030.24    0.995    31.54
2031.24    1.006    31.92
2032.24    1.017    32.30
2033.24    1.028    32.66
2034.24    1.038    33.02
2035.24    1.048    33.36
2036.24    1.058    33.71
2037.24    1.067    34.04
2038.24    1.076    34.37
2039.24    1.085    34.70
2040.24    1.093    35.02
2041.24    1.101    35.34
2042.24    1.109    35.65
2043.24    1.116    35.96
2044.24    1.123    36.26
2045.24    1.130    36.56
2046.24    1.136    36.85
2047.24    1.142    37.15
2048.24    1.148    37.44
2049.24    1.154    37.72
2050.24    1.159    38.01
2051.24    1.163    38.29
2052.24    1.168    38.57
2053.24    1.172    38.85
2054.24    1.176    39.12
2055.24    1.179    39.40
2056.24    1.182    39.67
2057.24    1.185    39.94
2058.24    1.187    40.21
2059.24    1.189    40.48
2060.24    1.191    40.75
2061.24    1.192    41.02
2062.24    1.193    41.28
2063.24    1.194    41.55
2064.24    1.194    41.82
2065.24    1.194    42.08
2066.24    1.194    42.35
2067.24    1.193    42.62
2068.24    1.192    42.88
2069.24    1.191    43.15
2070.24    1.189    43.42
2071.24    1.187    43.69
2072.24    1.184    43.96
2073.24    1.181    44.23
2074.24    1.178    44.50
2075.24    1.174    44.78
2076.24    1.170    45.05
2077.24    1.166    45.33
2078.24    1.161    45.61
2079.24    1.156    45.90
2080.24    1.150    46.18
2081.24    1.144    46.47
2082.24    1.138    46.76
2083.24    1.131    47.06
2084.24    1.124    47.36
2085.24    1.117    47.66
2086.24    1.109    47.97
2087.24    1.100    48.28
2088.24    1.092    48.60
2089.24    1.082    48.92
2090.24    1.073    49.24
2091.24    1.063    49.58
2092.24    1.052    49.92
2093.24    1.041    50.26
2094.24    1.030    50.62
2095.24    1.018    50.98
2096.24    1.006    51.35
2097.24    0.993    51.73
2098.24    0.980    52.12
2099.24    0.967    52.52
2100.24    0.953    52.94
2101.24    0.938    53.36
2102.24    0.923    53.80
2103.24    0.908    54.25
2104.24    0.892    54.72
2105.24    0.875    55.21
2106.24    0.858    55.72
2107.24    0.841    56.24
2108.24    0.823    56.79
2109.24    0.805    57.36
2110.24    0.786    57.97
2111.24    0.766    58.60
2112.24    0.746    59.26
2113.24    0.726    59.96
2114.24    0.705    60.71
2115.24    0.684    61.49
2116.24    0.662    62.33
2117.24    0.639    63.23
2118.24    0.616    64.20
2119.24    0.593    65.24






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 18:14:10



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