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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:09:19

Orbital Elements for COU2530AB

WDS:	COU2530AB	WDS ID/Discoverer
P:	55.000	Orbital period (years)
a:	0.25	Semi-major axis (arcseconds)
i:	74.2	Inclination (degrees)
Ω:	159.6	Longitude of ascending node (degrees)
T:	2022.900	Epoch of periastron passage (year)
e:	0.4	Eccentricity
ω:	38.4	Longitude of periastron (degrees)
Start-Year:	1998.0	Year
End-Year:	2052.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU2530AB

Position:	195124.76+404407.1	Epoch-2000 right ascension and declination
WDS-ID:	19514+4044	WDS designation
Discoverer Code:	COU2530AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	226195	HD catalog number
Hipparcos number:	97706	Hipparcos catalog number
V1:	8.91	Magnitude of the primary
V2:	9.38	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU2530AB

WDS 6th Orbit including measures of COU2530AB

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

Ephemeris of COU2530AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.063    200.0
-------------------------
1998.0     0.249    355.6
1999.0     0.236    357.3
2000.0     0.221    359.2
2001.0     0.205      1.5
2002.0     0.189      4.1
2003.0     0.172      7.3
2004.0     0.155     11.1
2005.0     0.138     15.9
2006.0     0.121     22.0
2007.0     0.105     30.1
2008.0     0.091     40.8
2009.0     0.081     54.8
2010.0     0.076     71.7
2011.0     0.077     89.4
2012.0     0.085    105.2
2013.0     0.096    117.8
2014.0     0.110    127.5
2015.0     0.125    134.9
2016.0     0.138    140.8
2017.0     0.150    145.7
2018.0     0.159    150.0
2019.0     0.164    153.9
2020.0     0.163    157.7
2021.0     0.155    161.7
2022.0     0.140    166.4
2023.0     0.118    172.5
2024.0     0.091    182.0
2025.0     0.063    200.0
2026.0     0.046    237.4
2027.0     0.055    281.1
2028.0     0.082    304.1
2029.0     0.113    315.1
2030.0     0.143    321.5
2031.0     0.171    325.7
2032.0     0.197    328.7
2033.0     0.220    331.0
2034.0     0.240    333.0
2035.0     0.258    334.6
2036.0     0.274    336.1
2037.0     0.287    337.4
2038.0     0.298    338.5
2039.0     0.306    339.7
2040.0     0.313    340.7
2041.0     0.318    341.8
2042.0     0.320    342.8
2043.0     0.321    343.8
2044.0     0.321    344.7
2045.0     0.318    345.7
2046.0     0.314    346.8
2047.0     0.309    347.8
2048.0     0.302    348.9
2049.0     0.294    350.0
2050.0     0.285    351.3
2051.0     0.274    352.6

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.