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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:31:03

Orbital Elements for A1959

WDS:	A1959	WDS ID/Discoverer
P:	31.850	Orbital period (years)
a:	0.259	Semi-major axis (arcseconds)
i:	63.3	Inclination (degrees)
Ω:	172.3	Longitude of ascending node (degrees)
T:	1988.360	Epoch of periastron passage (year)
e:	0.008	Eccentricity
ω:	147.7	Longitude of periastron (degrees)
Start-Year:	2010.0	Year
End-Year:	2040.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1959

Position:	070334.05+394034.1	Epoch-2000 right ascension and declination
WDS-ID:	07036+3941	WDS designation
Discoverer Code:	A1959	Discover designation and components
ADS number:	5726	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	34025	Hipparcos catalog number
V1:	10.60	Magnitude of the primary
V2:	10.34	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2004	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A1959

WDS 6th Orbit including measures of A1959

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

Ephemeris of A1959

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.242      2.9
-------------------------
2010.0     0.230    187.7
2011.0     0.206    194.8
2012.0     0.179    204.0
2013.0     0.151    216.6
2014.0     0.128    234.4
2015.0     0.116    257.9
2016.0     0.122    282.6
2017.0     0.142    302.6
2018.0     0.169    316.9
2019.0     0.196    327.2
2020.0     0.221    335.0
2021.0     0.240    341.4
2022.0     0.253    347.0
2023.0     0.257    352.2
2024.0     0.254    357.4
2025.0     0.242      2.9
2026.0     0.224      9.1
2027.0     0.200     16.8
2028.0     0.172     26.6
2029.0     0.145     40.3
2030.0     0.125     59.3
2031.0     0.117     83.3
2032.0     0.126    106.9
2033.0     0.148    125.4
2034.0     0.175    138.6
2035.0     0.203    148.2
2036.0     0.227    155.6
2037.0     0.245    161.7
2038.0     0.257    167.1
2039.0     0.261    172.1

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.