Double Star Calculator - Orbit

Orbital Elements for COU1738
WDS: COU1738 WDS ID/Discoverer
P: 270.000 Orbital period (years)
a: 0.354 Semi-major axis (arcseconds)
i: 73.1 Inclination (degrees)
Ω: 23.6 Longitude of ascending node (degrees)
T: 2038.580 Epoch of periastron passage (year)
e: 0.478 Eccentricity
ω: 212.9 Longitude of periastron (degrees)
Start-Year: 1890.0 Year
End-Year: 2160.0 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for COU1738
Position: 065014.13+362407.0 Epoch-2000 right ascension and declination
WDS-ID: 06502+3624 WDS designation
Discoverer Code: COU1738 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 49472 HD catalog number
Hipparcos number: 32798 Hipparcos catalog number
V1: 8.99 Magnitude of the primary
V2: 8.51 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2013 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: Doc2018c Reference

Double Star Orbit for COU1738



WDS 6th Orbit including measures of COU1738

-- 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 COU1738
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.200   199.11
--------------------------
1890.00    0.473    31.52
1891.00    0.471    31.71
1892.00    0.470    31.91
1893.00    0.468    32.10
1894.00    0.467    32.30
1895.00    0.465    32.49
1896.00    0.463    32.69
1897.00    0.461    32.89
1898.00    0.459    33.09
1899.00    0.457    33.30
1900.00    0.455    33.50
1901.00    0.453    33.71
1902.00    0.451    33.92
1903.00    0.448    34.13
1904.00    0.446    34.34
1905.00    0.444    34.56
1906.00    0.441    34.77
1907.00    0.438    35.00
1908.00    0.436    35.22
1909.00    0.433    35.44
1910.00    0.430    35.67
1911.00    0.427    35.91
1912.00    0.424    36.14
1913.00    0.421    36.38
1914.00    0.418    36.62
1915.00    0.415    36.87
1916.00    0.412    37.12
1917.00    0.409    37.37
1918.00    0.406    37.63
1919.00    0.402    37.89
1920.00    0.399    38.15
1921.00    0.395    38.42
1922.00    0.392    38.70
1923.00    0.388    38.98
1924.00    0.385    39.27
1925.00    0.381    39.56
1926.00    0.377    39.85
1927.00    0.373    40.16
1928.00    0.369    40.47
1929.00    0.365    40.78
1930.00    0.361    41.11
1931.00    0.357    41.44
1932.00    0.353    41.78
1933.00    0.349    42.12
1934.00    0.345    42.48
1935.00    0.341    42.84
1936.00    0.336    43.21
1937.00    0.332    43.59
1938.00    0.327    43.99
1939.00    0.323    44.39
1940.00    0.318    44.80
1941.00    0.314    45.23
1942.00    0.309    45.67
1943.00    0.305    46.12
1944.00    0.300    46.59
1945.00    0.295    47.07
1946.00    0.291    47.57
1947.00    0.286    48.08
1948.00    0.281    48.62
1949.00    0.276    49.17
1950.00    0.271    49.74
1951.00    0.266    50.33
1952.00    0.261    50.94
1953.00    0.256    51.58
1954.00    0.251    52.24
1955.00    0.246    52.93
1956.00    0.241    53.65
1957.00    0.236    54.40
1958.00    0.231    55.19
1959.00    0.226    56.00
1960.00    0.221    56.86
1961.00    0.215    57.76
1962.00    0.210    58.70
1963.00    0.205    59.69
1964.00    0.200    60.73
1965.00    0.195    61.82
1966.00    0.190    62.98
1967.00    0.185    64.19
1968.00    0.180    65.47
1969.00    0.175    66.83
1970.00    0.170    68.27
1971.00    0.165    69.79
1972.00    0.160    71.40
1973.00    0.156    73.11
1974.00    0.151    74.93
1975.00    0.146    76.86
1976.00    0.142    78.91
1977.00    0.138    81.09
1978.00    0.134    83.41
1979.00    0.130    85.86
1980.00    0.126    88.47
1981.00    0.123    91.22
1982.00    0.120    94.13
1983.00    0.117    97.19
1984.00    0.114   100.40
1985.00    0.112   103.75
1986.00    0.110   107.23
1987.00    0.108   110.83
1988.00    0.107   114.52
1989.00    0.106   118.28
1990.00    0.106   122.08
1991.00    0.106   125.89
1992.00    0.106   129.68
1993.00    0.107   133.43
1994.00    0.108   137.11
1995.00    0.110   140.70
1996.00    0.112   144.16
1997.00    0.114   147.50
1998.00    0.117   150.70
1999.00    0.120   153.76
2000.00    0.123   156.67
2001.00    0.126   159.43
2002.00    0.129   162.04
2003.00    0.133   164.52
2004.00    0.137   166.86
2005.00    0.141   169.08
2006.00    0.145   171.17
2007.00    0.149   173.16
2008.00    0.153   175.04
2009.00    0.157   176.83
2010.00    0.161   178.52
2011.00    0.164   180.14
2012.00    0.168   181.68
2013.00    0.172   183.16
2014.00    0.176   184.57
2015.00    0.179   185.92
2016.00    0.182   187.23
2017.00    0.186   188.49
2018.00    0.188   189.71
2019.00    0.191   190.90
2020.00    0.193   192.05
2021.00    0.196   193.18
2022.00    0.197   194.28
2023.00    0.199   195.37
2024.00    0.200   196.45
2025.00    0.200   197.51
2026.00    0.200   198.58
2027.00    0.200   199.64
2028.00    0.199   200.71
2029.00    0.198   201.79
2030.00    0.196   202.88
2031.00    0.194   204.00
2032.00    0.191   205.15
2033.00    0.188   206.34
2034.00    0.184   207.58
2035.00    0.179   208.88
2036.00    0.174   210.25
2037.00    0.168   211.71
2038.00    0.162   213.28
2039.00    0.155   214.98
2040.00    0.148   216.84
2041.00    0.140   218.90
2042.00    0.132   221.20
2043.00    0.124   223.79
2044.00    0.116   226.76
2045.00    0.108   230.18
2046.00    0.099   234.17
2047.00    0.091   238.88
2048.00    0.084   244.46
2049.00    0.077   251.11
2050.00    0.071   258.95
2051.00    0.066   268.04
2052.00    0.064   278.19
2053.00    0.063   288.94
2054.00    0.064   299.62
2055.00    0.067   309.60
2056.00    0.072   318.45
2057.00    0.078   326.04
2058.00    0.085   332.43
2059.00    0.093   337.78
2060.00    0.102   342.27
2061.00    0.111   346.06
2062.00    0.120   349.27
2063.00    0.129   352.04
2064.00    0.138   354.43
2065.00    0.148   356.52
2066.00    0.157   358.36
2067.00    0.166   360.00
2068.00    0.175     1.46
2069.00    0.184     2.78
2070.00    0.193     3.98
2071.00    0.202     5.07
2072.00    0.211     6.07
2073.00    0.220     6.99
2074.00    0.228     7.84
2075.00    0.236     8.63
2076.00    0.245     9.37
2077.00    0.253    10.06
2078.00    0.260    10.71
2079.00    0.268    11.32
2080.00    0.276    11.90
2081.00    0.283    12.45
2082.00    0.290    12.96
2083.00    0.298    13.46
2084.00    0.304    13.93
2085.00    0.311    14.38
2086.00    0.318    14.81
2087.00    0.324    15.22
2088.00    0.331    15.62
2089.00    0.337    16.00
2090.00    0.343    16.37
2091.00    0.349    16.73
2092.00    0.355    17.08
2093.00    0.360    17.41
2094.00    0.366    17.73
2095.00    0.371    18.05
2096.00    0.376    18.35
2097.00    0.381    18.65
2098.00    0.386    18.94
2099.00    0.391    19.23
2100.00    0.395    19.50
2101.00    0.400    19.77
2102.00    0.404    20.04
2103.00    0.408    20.29
2104.00    0.413    20.55
2105.00    0.417    20.80
2106.00    0.420    21.04
2107.00    0.424    21.28
2108.00    0.428    21.51
2109.00    0.431    21.74
2110.00    0.435    21.97
2111.00    0.438    22.20
2112.00    0.441    22.42
2113.00    0.444    22.64
2114.00    0.447    22.85
2115.00    0.450    23.06
2116.00    0.452    23.27
2117.00    0.455    23.48
2118.00    0.457    23.69
2119.00    0.460    23.89
2120.00    0.462    24.09
2121.00    0.464    24.29
2122.00    0.466    24.49
2123.00    0.468    24.68
2124.00    0.470    24.88
2125.00    0.471    25.07
2126.00    0.473    25.26
2127.00    0.474    25.45
2128.00    0.476    25.64
2129.00    0.477    25.83
2130.00    0.478    26.01
2131.00    0.479    26.20
2132.00    0.480    26.39
2133.00    0.481    26.57
2134.00    0.482    26.75
2135.00    0.483    26.94
2136.00    0.484    27.12
2137.00    0.484    27.30
2138.00    0.485    27.48
2139.00    0.485    27.67
2140.00    0.485    27.85
2141.00    0.485    28.03
2142.00    0.485    28.21
2143.00    0.485    28.39
2144.00    0.485    28.57
2145.00    0.485    28.75
2146.00    0.485    28.93
2147.00    0.485    29.11
2148.00    0.484    29.30
2149.00    0.484    29.48
2150.00    0.483    29.66
2151.00    0.482    29.84
2152.00    0.482    30.03
2153.00    0.481    30.21
2154.00    0.480    30.40
2155.00    0.479    30.58
2156.00    0.478    30.77
2157.00    0.477    30.96
2158.00    0.476    31.14
2159.00    0.474    31.33






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 15:51:49



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