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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:38:08

Orbital Elements for COU1281

WDS:	COU1281	WDS ID/Discoverer
P:	46.460	Orbital period (years)
a:	0.255	Semi-major axis (arcseconds)
i:	76.2	Inclination (degrees)
Ω:	26.8	Longitude of ascending node (degrees)
T:	2015.380	Epoch of periastron passage (year)
e:	0.629	Eccentricity
ω:	269.0	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 COU1281

Position:	162255.97+380416.3	Epoch-2000 right ascension and declination
WDS-ID:	16229+3803	WDS designation
Discoverer Code:	COU1281	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	10.1	Magnitude of the primary
V2:	10.4	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU1281

WDS 6th Orbit including measures of COU1281

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

Ephemeris of COU1281

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.200     43.3
-------------------------
2002.0     0.164    178.2
2003.0     0.173    181.4
2004.0     0.181    184.4
2005.0     0.188    187.2
2006.0     0.194    189.7
2007.0     0.198    192.1
2008.0     0.199    194.5
2009.0     0.198    196.9
2010.0     0.193    199.3
2011.0     0.182    202.0
2012.0     0.164    205.0
2013.0     0.136    209.2
2014.0     0.093    216.4
2015.0     0.036    244.0
2016.0     0.047      0.1
2017.0     0.103     18.9
2018.0     0.143     25.1
2019.0     0.170     28.9
2020.0     0.188     31.8
2021.0     0.198     34.3
2022.0     0.204     36.6
2023.0     0.205     38.8
2024.0     0.204     41.0
2025.0     0.200     43.3
2026.0     0.195     45.7
2027.0     0.188     48.3
2028.0     0.180     51.0
2029.0     0.172     54.0
2030.0     0.162     57.4
2031.0     0.153     61.1
2032.0     0.143     65.4
2033.0     0.134     70.3
2034.0     0.125     75.9
2035.0     0.117     82.4
2036.0     0.109     89.7
2037.0     0.104     97.9
2038.0     0.100    106.9
2039.0     0.099    116.3
2040.0     0.100    125.8
2041.0     0.103    134.9
2042.0     0.108    143.3
2043.0     0.115    150.8
2044.0     0.123    157.4
2045.0     0.132    163.2
2046.0     0.141    168.2
2047.0     0.151    172.6

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.