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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:33:22

Orbital Elements for COU1445

WDS:	COU1445	WDS ID/Discoverer
P:	70.590	Orbital period (years)
a:	0.263	Semi-major axis (arcseconds)
i:	81.1	Inclination (degrees)
Ω:	64.7	Longitude of ascending node (degrees)
T:	1993.390	Epoch of periastron passage (year)
e:	0.991	Eccentricity
ω:	284.6	Longitude of periastron (degrees)
Start-Year:	1990.0	Year
End-Year:	2060.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1445

Position:	154158.29+420304.7	Epoch-2000 right ascension and declination
WDS-ID:	15420+4203	WDS designation
Discoverer Code:	COU1445	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	140432	HD catalog number
Hipparcos number:	76882	Hipparcos catalog number
V1:	8.3	Magnitude of the primary
V2:	8.9	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2005	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU1445

WDS 6th Orbit including measures of COU1445

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

Ephemeris of COU1445

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.148    212.8
-------------------------
1990.0     0.080    226.6
1991.0     0.068    228.0
1992.0     0.053    230.0
1993.0     0.029    234.5
1994.0     0.012    115.0
1995.0     0.017    152.6
1996.0     0.024    170.2
1997.0     0.032    179.8
1998.0     0.039    185.8
1999.0     0.045    189.9
2000.0     0.052    193.0
2001.0     0.058    195.4
2002.0     0.064    197.4
2003.0     0.070    199.0
2004.0     0.075    200.4
2005.0     0.081    201.6
2006.0     0.086    202.7
2007.0     0.090    203.6
2008.0     0.095    204.5
2009.0     0.099    205.3
2010.0     0.104    206.0
2011.0     0.108    206.6
2012.0     0.112    207.2
2013.0     0.115    207.8
2014.0     0.119    208.3
2015.0     0.122    208.8
2016.0     0.125    209.3
2017.0     0.129    209.8
2018.0     0.131    210.2
2019.0     0.134    210.6
2020.0     0.137    211.0
2021.0     0.139    211.4
2022.0     0.142    211.8
2023.0     0.144    212.1
2024.0     0.146    212.5
2025.0     0.148    212.8
2026.0     0.150    213.1
2027.0     0.151    213.5
2028.0     0.153    213.8
2029.0     0.154    214.1
2030.0     0.155    214.4
2031.0     0.156    214.7
2032.0     0.157    215.0
2033.0     0.158    215.3
2034.0     0.158    215.6
2035.0     0.159    215.9
2036.0     0.159    216.2
2037.0     0.159    216.5
2038.0     0.159    216.7
2039.0     0.158    217.0
2040.0     0.158    217.3
2041.0     0.157    217.6
2042.0     0.156    217.9
2043.0     0.155    218.2
2044.0     0.154    218.5
2045.0     0.152    218.8
2046.0     0.151    219.2
2047.0     0.149    219.5
2048.0     0.146    219.8
2049.0     0.144    220.2
2050.0     0.141    220.5
2051.0     0.138    220.9
2052.0     0.134    221.3
2053.0     0.130    221.7
2054.0     0.126    222.2
2055.0     0.121    222.6
2056.0     0.116    223.2
2057.0     0.110    223.7
2058.0     0.103    224.4
2059.0     0.095    225.1

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.