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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:02:54

Orbital Elements for COU2197

WDS:	COU2197	WDS ID/Discoverer
P:	46.590	Orbital period (years)
a:	0.203	Semi-major axis (arcseconds)
i:	146.7	Inclination (degrees)
Ω:	23.1	Longitude of ascending node (degrees)
T:	2024.450	Epoch of periastron passage (year)
e:	0.167	Eccentricity
ω:	188.8	Longitude of periastron (degrees)
Start-Year:	2002.0	Year
End-Year:	2048.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU2197

Position:	190656.22+413719.6	Epoch-2000 right ascension and declination
WDS-ID:	19069+4137	WDS designation
Discoverer Code:	COU2197	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	178474	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.1	Magnitude of the primary
V2:	9.1	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU2197

WDS 6th Orbit including measures of COU2197

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

Ephemeris of COU2197

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.168    190.6
-------------------------
2002.0     0.235     11.7
2003.0     0.232      6.9
2004.0     0.229      2.0
2005.0     0.224    356.9
2006.0     0.219    351.5
2007.0     0.213    345.9
2008.0     0.207    340.0
2009.0     0.200    333.6
2010.0     0.193    326.8
2011.0     0.186    319.5
2012.0     0.180    311.7
2013.0     0.174    303.3
2014.0     0.170    294.4
2015.0     0.166    285.2
2016.0     0.164    275.5
2017.0     0.164    265.8
2018.0     0.164    256.0
2019.0     0.165    246.3
2020.0     0.167    236.7
2021.0     0.168    227.4
2022.0     0.169    218.1
2023.0     0.170    209.0
2024.0     0.169    199.9
2025.0     0.168    190.6
2026.0     0.165    181.1
2027.0     0.162    171.4
2028.0     0.160    161.3
2029.0     0.158    150.8
2030.0     0.157    140.2
2031.0     0.157    129.5
2032.0     0.159    118.9
2033.0     0.163    108.8
2034.0     0.168     99.1
2035.0     0.174     90.2
2036.0     0.181     81.9
2037.0     0.189     74.2
2038.0     0.197     67.2
2039.0     0.205     60.7
2040.0     0.212     54.6
2041.0     0.218     48.9
2042.0     0.224     43.5
2043.0     0.228     38.4
2044.0     0.232     33.5
2045.0     0.235     28.6
2046.0     0.236     23.9
2047.0     0.237     19.2

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.