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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:32:50

Orbital Elements for COU612

WDS:	COU612	WDS ID/Discoverer
P:	63.090	Orbital period (years)
a:	0.223	Semi-major axis (arcseconds)
i:	138.8	Inclination (degrees)
Ω:	155.9	Longitude of ascending node (degrees)
T:	2035.010	Epoch of periastron passage (year)
e:	0.401	Eccentricity
ω:	136.1	Longitude of periastron (degrees)
Start-Year:	1994.0	Year
End-Year:	2056.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU612

Position:	153902.60+254447.0	Epoch-2000 right ascension and declination
WDS-ID:	15390+2545	WDS designation
Discoverer Code:	COU612	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	139749	HD catalog number
Hipparcos number:	76639	Hipparcos catalog number
V1:	9.15	Magnitude of the primary
V2:	9.04	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for COU612

WDS 6th Orbit including measures of COU612

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

Ephemeris of COU612

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.194    130.5
-------------------------
1994.0     0.229    220.4
1995.0     0.235    216.8
1996.0     0.241    213.3
1997.0     0.247    210.1
1998.0     0.253    206.9
1999.0     0.258    203.9
2000.0     0.263    201.0
2001.0     0.268    198.3
2002.0     0.272    195.6
2003.0     0.276    193.0
2004.0     0.280    190.5
2005.0     0.283    188.0
2006.0     0.285    185.6
2007.0     0.287    183.2
2008.0     0.289    180.8
2009.0     0.290    178.5
2010.0     0.290    176.2
2011.0     0.289    173.8
2012.0     0.288    171.5
2013.0     0.286    169.1
2014.0     0.283    166.7
2015.0     0.280    164.2
2016.0     0.276    161.7
2017.0     0.270    159.1
2018.0     0.264    156.3
2019.0     0.257    153.5
2020.0     0.249    150.4
2021.0     0.240    147.1
2022.0     0.230    143.6
2023.0     0.219    139.7
2024.0     0.207    135.4
2025.0     0.194    130.5
2026.0     0.180    124.9
2027.0     0.166    118.4
2028.0     0.151    110.6
2029.0     0.137    101.1
2030.0     0.124     89.6
2031.0     0.114     75.9
2032.0     0.109     60.0
2033.0     0.108     43.2
2034.0     0.112     26.8
2035.0     0.119     11.9
2036.0     0.127    359.0
2037.0     0.136    347.7
2038.0     0.144    337.8
2039.0     0.150    328.7
2040.0     0.155    320.3
2041.0     0.159    312.4
2042.0     0.162    304.8
2043.0     0.165    297.5
2044.0     0.167    290.4
2045.0     0.170    283.6
2046.0     0.173    276.9
2047.0     0.176    270.5
2048.0     0.180    264.3
2049.0     0.184    258.4
2050.0     0.189    252.8
2051.0     0.194    247.4
2052.0     0.199    242.3
2053.0     0.205    237.5
2054.0     0.210    233.0
2055.0     0.216    228.7

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.