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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:10:44

Orbital Elements for HDS1745

WDS:	HDS1745	WDS ID/Discoverer
P:	26.160	Orbital period (years)
a:	0.6023	Semi-major axis (arcseconds)
i:	99.3	Inclination (degrees)
Ω:	24.2	Longitude of ascending node (degrees)
T:	2000.780	Epoch of periastron passage (year)
e:	0.633	Eccentricity
ω:	113.0	Longitude of periastron (degrees)
Start-Year:	2012.0	Year
End-Year:	2038.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1745

Position:	122333.32+671117.5	Epoch-2000 right ascension and declination
WDS-ID:	12236+6711	WDS designation
Discoverer Code:	HDS1745	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	60444	Hipparcos catalog number
V1:	11.93	Magnitude of the primary
V2:	12.19	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1745

WDS 6th Orbit including measures of HDS1745

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

Ephemeris of HDS1745

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.382     21.7
-------------------------
2012.0     0.300     54.4
2013.0     0.361     48.7
2014.0     0.419     44.5
2015.0     0.474     41.4
2016.0     0.523     38.9
2017.0     0.566     36.8
2018.0     0.601     35.0
2019.0     0.627     33.3
2020.0     0.641     31.8
2021.0     0.641     30.2
2022.0     0.623     28.7
2023.0     0.581     27.0
2024.0     0.506     24.9
2025.0     0.382     21.7
2026.0     0.183     13.3
2027.0     0.108    221.3
2028.0     0.293    204.0
2029.0     0.342    198.0
2030.0     0.328    192.6
2031.0     0.286    186.0
2032.0     0.233    176.6
2033.0     0.181    161.7
2034.0     0.145    137.4
2035.0     0.143    105.9
2036.0     0.177     80.5
2037.0     0.230     65.0

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.