Double Star Calculator - Orbit

Orbital Elements for COU284

WDS:	COU284	WDS ID/Discoverer
P:	133.858	Orbital period (years)
a:	0.4014	Semi-major axis (arcseconds)
i:	96.7	Inclination (degrees)
Ω:	94.3	Longitude of ascending node (degrees)
T:	2068.313	Epoch of periastron passage (year)
e:	0.88	Eccentricity
ω:	265.9	Longitude of periastron (degrees)
Start-Year:	1958.071	Year
End-Year:	2091.929	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU284
Position:	094742.79+203617.2	Epoch-2000 right ascension and declination
WDS-ID:	09477+2036	WDS designation
Discoverer Code:	COU284	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	84739	HD catalog number
Hipparcos number:	48051	Hipparcos catalog number
V1:	8.15	Magnitude of the primary
V2:	8.31	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	Tok2024c	Reference

Double Star Orbit for COU284

WDS 6th Orbit including measures of COU284

-- 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 COU284

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.104   324.27
--------------------------
1958.07    0.221    79.56
1959.07    0.219    79.06
1960.07    0.218    78.56
1961.07    0.217    78.05
1962.07    0.215    77.54
1963.07    0.213    77.02
1964.07    0.212    76.49
1965.07    0.209    75.94
1966.07    0.207    75.39
1967.07    0.205    74.83
1968.07    0.203    74.25
1969.07    0.200    73.66
1970.07    0.198    73.05
1971.07    0.195    72.43
1972.07    0.192    71.79
1973.07    0.190    71.13
1974.07    0.187    70.45
1975.07    0.184    69.75
1976.07    0.181    69.03
1977.07    0.178    68.29
1978.07    0.175    67.52
1979.07    0.172    66.72
1980.07    0.169    65.89
1981.07    0.165    65.03
1982.07    0.162    64.13
1983.07    0.159    63.20
1984.07    0.156    62.23
1985.07    0.153    61.22
1986.07    0.149    60.17
1987.07    0.146    59.07
1988.07    0.143    57.91
1989.07    0.140    56.71
1990.07    0.136    55.45
1991.07    0.133    54.12
1992.07    0.130    52.73
1993.07    0.127    51.27
1994.07    0.124    49.74
1995.07    0.121    48.13
1996.07    0.118    46.44
1997.07    0.115    44.66
1998.07    0.112    42.78
1999.07    0.109    40.81
2000.07    0.106    38.74
2001.07    0.104    36.57
2002.07    0.101    34.29
2003.07    0.099    31.90
2004.07    0.097    29.40
2005.07    0.095    26.79
2006.07    0.093    24.08
2007.07    0.092    21.26
2008.07    0.090    18.35
2009.07    0.089    15.35
2010.07    0.088    12.28
2011.07    0.087     9.14
2012.07    0.087     5.96
2013.07    0.086     2.75
2014.07    0.086   359.52
2015.07    0.086   356.30
2016.07    0.087   353.10
2017.07    0.088   349.94
2018.07    0.088   346.84
2019.07    0.090   343.80
2020.07    0.091   340.85
2021.07    0.092   337.99
2022.07    0.094   335.23
2023.07    0.096   332.57
2024.07    0.098   330.02
2025.07    0.100   327.58
2026.07    0.103   325.24
2027.07    0.105   323.01
2028.07    0.108   320.88
2029.07    0.110   318.85
2030.07    0.113   316.92
2031.07    0.116   315.08
2032.07    0.118   313.33
2033.07    0.121   311.66
2034.07    0.124   310.07
2035.07    0.127   308.55
2036.07    0.130   307.10
2037.07    0.133   305.71
2038.07    0.136   304.38
2039.07    0.139   303.11
2040.07    0.142   301.89
2041.07    0.145   300.72
2042.07    0.147   299.59
2043.07    0.150   298.51
2044.07    0.153   297.46
2045.07    0.155   296.45
2046.07    0.158   295.46
2047.07    0.160   294.51
2048.07    0.162   293.59
2049.07    0.164   292.68
2050.07    0.166   291.80
2051.07    0.167   290.94
2052.07    0.169   290.09
2053.07    0.170   289.25
2054.07    0.171   288.42
2055.07    0.171   287.60
2056.07    0.171   286.78
2057.07    0.171   285.96
2058.07    0.169   285.13
2059.07    0.168   284.28
2060.07    0.165   283.41
2061.07    0.161   282.51
2062.07    0.156   281.56
2063.07    0.149   280.53
2064.07    0.140   279.38
2065.07    0.126   278.02
2066.07    0.107   276.26
2067.07    0.076   273.40
2068.07    0.022   260.32
2069.07    0.049    99.36
2070.07    0.095    94.45
2071.07    0.124    92.44
2072.07    0.145    91.11
2073.07    0.161    90.08
2074.07    0.173    89.22
2075.07    0.183    88.46
2076.07    0.191    87.78
2077.07    0.198    87.14
2078.07    0.203    86.55
2079.07    0.208    85.98
2080.07    0.212    85.43
2081.07    0.215    84.90
2082.07    0.217    84.39
2083.07    0.219    83.88
2084.07    0.221    83.39
2085.07    0.222    82.90
2086.07    0.222    82.41
2087.07    0.223    81.92
2088.07    0.223    81.44
2089.07    0.223    80.96
2090.07    0.222    80.47
2091.07    0.221    79.98

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 16:21:03