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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:44:28

Orbital Elements for A1585

WDS:	A1585	WDS ID/Discoverer
P:	35.613	Orbital period (years)
a:	0.18194	Semi-major axis (arcseconds)
i:	109.41	Inclination (degrees)
Ω:	105.641	Longitude of ascending node (degrees)
T:	1996.879	Epoch of periastron passage (year)
e:	0.5584	Eccentricity
ω:	355.63	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1585

Position:	090337.56+470924.0	Epoch-2000 right ascension and declination
WDS-ID:	09036+4709	WDS designation
Discoverer Code:	A1585	Discover designation and components
ADS number:	7158	Aitken Double Star catalog
HD number:	77327	HD catalog number
Hipparcos number:	44471	Hipparcos catalog number
V1:	4.16	Magnitude of the primary
V2:	4.54	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A1585

WDS 6th Orbit including measures of A1585

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

Ephemeris of A1585

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.169    270.6
-------------------------
2008.0     0.225    296.2
2009.0     0.240    294.5
2010.0     0.253    293.0
2011.0     0.264    291.6
2012.0     0.272    290.3
2013.0     0.278    289.1
2014.0     0.281    287.9
2015.0     0.283    286.7
2016.0     0.282    285.6
2017.0     0.280    284.4
2018.0     0.274    283.2
2019.0     0.267    282.0
2020.0     0.257    280.6
2021.0     0.245    279.1
2022.0     0.230    277.5
2023.0     0.213    275.6
2024.0     0.192    273.4
2025.0     0.169    270.6
2026.0     0.144    266.8
2027.0     0.115    261.2
2028.0     0.085    251.8
2029.0     0.055    231.7
2030.0     0.039    184.3
2031.0     0.054    136.7
2032.0     0.075    114.5
2033.0     0.079     99.8
2034.0     0.063     81.9
2035.0     0.045     48.7
2036.0     0.047      0.6
2037.0     0.070    331.7
2038.0     0.098    318.1
2039.0     0.125    310.5
2040.0     0.151    305.7
2041.0     0.175    302.2

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.