Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:24:06

Orbital Elements for COU1654

WDS:	COU1654	WDS ID/Discoverer
P:	93.000	Orbital period (years)
a:	0.15	Semi-major axis (arcseconds)
i:	109.7	Inclination (degrees)
Ω:	91.5	Longitude of ascending node (degrees)
T:	1918.000	Epoch of periastron passage (year)
e:	0.564	Eccentricity
ω:	110.0	Longitude of periastron (degrees)
Start-Year:	1979.0	Year
End-Year:	2071.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1654

Position:	005411.08+431754.1	Epoch-2000 right ascension and declination
WDS-ID:	00542+4318	WDS designation
Discoverer Code:	COU1654	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	5178	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	8.4	Magnitude of the primary
V2:	8.4	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1995	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU1654

WDS 6th Orbit including measures of COU1654

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)

Ephemeris of COU1654

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.098    248.6
-------------------------
1979.0     0.151    113.4
1980.0     0.153    112.4
1981.0     0.154    111.4
1982.0     0.156    110.4
1983.0     0.157    109.4
1984.0     0.158    108.4
1985.0     0.159    107.4
1986.0     0.160    106.5
1987.0     0.160    105.5
1988.0     0.160    104.6
1989.0     0.160    103.6
1990.0     0.159    102.7
1991.0     0.158    101.7
1992.0     0.157    100.7
1993.0     0.155     99.7
1994.0     0.152     98.7
1995.0     0.150     97.6
1996.0     0.146     96.5
1997.0     0.142     95.4
1998.0     0.138     94.1
1999.0     0.132     92.8
2000.0     0.126     91.3
2001.0     0.119     89.7
2002.0     0.111     87.9
2003.0     0.102     85.8
2004.0     0.092     83.2
2005.0     0.080     79.9
2006.0     0.068     75.4
2007.0     0.054     68.8
2008.0     0.040     57.4
2009.0     0.027     34.5
2010.0     0.023    351.6
2011.0     0.030    314.3
2012.0     0.044    295.9
2013.0     0.057    286.1
2014.0     0.068    279.8
2015.0     0.078    275.3
2016.0     0.085    271.7
2017.0     0.091    268.6
2018.0     0.095    265.8
2019.0     0.098    263.2
2020.0     0.100    260.7
2021.0     0.101    258.3
2022.0     0.101    255.9
2023.0     0.100    253.6
2024.0     0.099    251.1
2025.0     0.098    248.6
2026.0     0.096    246.1
2027.0     0.095    243.4
2028.0     0.092    240.7
2029.0     0.090    237.8
2030.0     0.088    234.7
2031.0     0.086    231.5
2032.0     0.084    228.1
2033.0     0.081    224.6
2034.0     0.079    220.8
2035.0     0.078    216.9
2036.0     0.076    212.8
2037.0     0.075    208.5
2038.0     0.074    204.1
2039.0     0.073    199.6
2040.0     0.073    195.0
2041.0     0.072    190.4
2042.0     0.073    185.8
2043.0     0.073    181.2
2044.0     0.074    176.8
2045.0     0.076    172.5
2046.0     0.077    168.3
2047.0     0.079    164.4
2048.0     0.081    160.6
2049.0     0.084    157.1
2050.0     0.086    153.7
2051.0     0.089    150.6
2052.0     0.092    147.6
2053.0     0.095    144.8
2054.0     0.098    142.2
2055.0     0.101    139.8
2056.0     0.104    137.5
2057.0     0.108    135.3
2058.0     0.111    133.3
2059.0     0.114    131.4
2060.0     0.118    129.6
2061.0     0.121    127.9
2062.0     0.124    126.3
2063.0     0.127    124.7
2064.0     0.130    123.3
2065.0     0.133    121.9
2066.0     0.136    120.5
2067.0     0.139    119.2
2068.0     0.141    118.0
2069.0     0.144    116.8
2070.0     0.146    115.6

Disclaimer

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.