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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:47:56

Orbital Elements for COU2084AA,AB

WDS:	COU2084AA,AB	WDS ID/Discoverer
P:	50.340	Orbital period (years)
a:	0.246	Semi-major axis (arcseconds)
i:	112.9	Inclination (degrees)
Ω:	84.7	Longitude of ascending node (degrees)
T:	2012.390	Epoch of periastron passage (year)
e:	0.652	Eccentricity
ω:	137.0	Longitude of periastron (degrees)
Start-Year:	2000.0	Year
End-Year:	2050.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU2084AA,AB

Position:	093522.50+395747.7	Epoch-2000 right ascension and declination
WDS-ID:	09354+3958	WDS designation
Discoverer Code:	COU2084AA,AB	Discover designation and components
ADS number:	7438	Aitken Double Star catalog
HD number:	82780	HD catalog number
Hipparcos number:	47053	Hipparcos catalog number
V1:	6.98	Magnitude of the primary
V2:	8.79	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU2084AA,AB

WDS 6th Orbit including measures of COU2084AA,AB

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

Ephemeris of COU2084AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.161    134.2
-------------------------
2000.0     0.320     90.1
2001.0     0.310     88.8
2002.0     0.298     87.5
2003.0     0.283     85.9
2004.0     0.266     84.3
2005.0     0.245     82.3
2006.0     0.222     80.0
2007.0     0.194     77.0
2008.0     0.161     72.9
2009.0     0.123     66.6
2010.0     0.081     53.8
2011.0     0.042     14.1
2012.0     0.052    299.0
2013.0     0.086    271.3
2014.0     0.103    257.4
2015.0     0.105    245.8
2016.0     0.101    233.9
2017.0     0.096    220.8
2018.0     0.093    206.3
2019.0     0.093    191.4
2020.0     0.098    177.2
2021.0     0.106    164.9
2022.0     0.118    154.6
2023.0     0.131    146.3
2024.0     0.146    139.6
2025.0     0.161    134.2
2026.0     0.176    129.7
2027.0     0.191    125.9
2028.0     0.206    122.6
2029.0     0.220    119.8
2030.0     0.234    117.3
2031.0     0.248    115.1
2032.0     0.260    113.1
2033.0     0.272    111.3
2034.0     0.283    109.7
2035.0     0.294    108.2
2036.0     0.303    106.7
2037.0     0.312    105.4
2038.0     0.319    104.1
2039.0     0.326    102.9
2040.0     0.332    101.7
2041.0     0.337    100.5
2042.0     0.340     99.4
2043.0     0.343     98.3
2044.0     0.344     97.3
2045.0     0.344     96.2
2046.0     0.343     95.1
2047.0     0.340     94.0
2048.0     0.336     92.9
2049.0     0.331     91.7

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.