Double Star Calculator - Orbit

Orbital Elements for COU1754

WDS:	COU1754	WDS ID/Discoverer
P:	125.500	Orbital period (years)
a:	0.6254	Semi-major axis (arcseconds)
i:	94.865	Inclination (degrees)
Ω:	171.25	Longitude of ascending node (degrees)
T:	2056.400	Epoch of periastron passage (year)
e:	0.189	Eccentricity
ω:	230.13	Longitude of periastron (degrees)
Start-Year:	1962.25	Year
End-Year:	2087.75	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1754
Position:	133308.21+431510.2	Epoch-2000 right ascension and declination
WDS-ID:	13331+4316	WDS designation
Discoverer Code:	COU1754	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	66110	Hipparcos catalog number
V1:	10.18	Magnitude of the primary
V2:	10.21	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Hor2021b	Reference

Double Star Orbit for COU1754

WDS 6th Orbit including measures of COU1754

-- 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 COU1754

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.350   358.72
--------------------------
1962.25    0.613   172.90
1963.25    0.627   172.66
1964.25    0.640   172.43
1965.25    0.651   172.20
1966.25    0.661   171.98
1967.25    0.670   171.77
1968.25    0.677   171.57
1969.25    0.683   171.37
1970.25    0.688   171.17
1971.25    0.691   170.97
1972.25    0.694   170.78
1973.25    0.695   170.58
1974.25    0.694   170.39
1975.25    0.693   170.19
1976.25    0.690   170.00
1977.25    0.686   169.80
1978.25    0.681   169.60
1979.25    0.675   169.40
1980.25    0.668   169.19
1981.25    0.660   168.98
1982.25    0.650   168.76
1983.25    0.640   168.54
1984.25    0.629   168.30
1985.25    0.616   168.06
1986.25    0.603   167.81
1987.25    0.589   167.55
1988.25    0.574   167.27
1989.25    0.558   166.98
1990.25    0.542   166.67
1991.25    0.524   166.34
1992.25    0.506   165.99
1993.25    0.487   165.61
1994.25    0.467   165.20
1995.25    0.447   164.75
1996.25    0.426   164.26
1997.25    0.404   163.72
1998.25    0.382   163.12
1999.25    0.360   162.44
2000.25    0.336   161.66
2001.25    0.313   160.78
2002.25    0.289   159.74
2003.25    0.264   158.52
2004.25    0.240   157.05
2005.25    0.215   155.24
2006.25    0.190   152.95
2007.25    0.166   149.98
2008.25    0.141   145.98
2009.25    0.117   140.33
2010.25    0.095   131.95
2011.25    0.076   118.96
2012.25    0.063    99.11
2013.25    0.060    73.70
2014.25    0.069    50.59
2015.25    0.086    34.58
2016.25    0.107    24.30
2017.25    0.130    17.53
2018.25    0.154    12.85
2019.25    0.178     9.44
2020.25    0.203     6.86
2021.25    0.228     4.83
2022.25    0.252     3.20
2023.25    0.276     1.86
2024.25    0.299     0.72
2025.25    0.322   359.76
2026.25    0.344   358.91
2027.25    0.366   358.17
2028.25    0.387   357.51
2029.25    0.406   356.92
2030.25    0.425   356.38
2031.25    0.443   355.88
2032.25    0.460   355.42
2033.25    0.475   355.00
2034.25    0.489   354.59
2035.25    0.501   354.21
2036.25    0.513   353.85
2037.25    0.522   353.50
2038.25    0.530   353.16
2039.25    0.536   352.83
2040.25    0.540   352.51
2041.25    0.543   352.19
2042.25    0.543   351.88
2043.25    0.541   351.56
2044.25    0.538   351.24
2045.25    0.532   350.91
2046.25    0.524   350.58
2047.25    0.514   350.23
2048.25    0.502   349.87
2049.25    0.487   349.49
2050.25    0.471   349.08
2051.25    0.452   348.64
2052.25    0.432   348.16
2053.25    0.409   347.64
2054.25    0.385   347.04
2055.25    0.359   346.37
2056.25    0.331   345.58
2057.25    0.302   344.65
2058.25    0.271   343.51
2059.25    0.240   342.07
2060.25    0.207   340.19
2061.25    0.174   337.59
2062.25    0.140   333.76
2063.25    0.107   327.53
2064.25    0.076   315.98
2065.25    0.051   291.20
2066.25    0.046   247.53
2067.25    0.065   214.73
2068.25    0.095   199.49
2069.25    0.128   191.77
2070.25    0.161   187.23
2071.25    0.195   184.26
2072.25    0.228   182.16
2073.25    0.261   180.59
2074.25    0.293   179.37
2075.25    0.324   178.38
2076.25    0.354   177.57
2077.25    0.383   176.88
2078.25    0.411   176.29
2079.25    0.438   175.77
2080.25    0.464   175.31
2081.25    0.488   174.90
2082.25    0.511   174.52
2083.25    0.532   174.18
2084.25    0.553   173.86
2085.25    0.572   173.57
2086.25    0.589   173.29
2087.25    0.605   173.03

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 16:57:26