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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 16:45:35

Orbital Elements for HDS396

WDS:	HDS396	WDS ID/Discoverer
P:	34.500	Orbital period (years)
a:	0.317	Semi-major axis (arcseconds)
i:	131.8	Inclination (degrees)
Ω:	40.6	Longitude of ascending node (degrees)
T:	2021.010	Epoch of periastron passage (year)
e:	0.647	Eccentricity
ω:	259.1	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 HDS396

Position:	030733.79-035817.0	Epoch-2000 right ascension and declination
WDS-ID:	03076-0358	WDS designation
Discoverer Code:	HDS396	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	14524	Hipparcos catalog number
V1:	11.69	Magnitude of the primary
V2:	11.71	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2021	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS396

WDS 6th Orbit including measures of HDS396

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

Ephemeris of HDS396

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.265     27.3
-------------------------
2008.0     0.333    307.7
2009.0     0.326    302.8
2010.0     0.319    297.7
2011.0     0.311    292.4
2012.0     0.303    286.7
2013.0     0.294    280.7
2014.0     0.283    274.3
2015.0     0.271    267.4
2016.0     0.257    259.8
2017.0     0.239    251.1
2018.0     0.215    240.8
2019.0     0.181    227.2
2020.0     0.130    205.0
2021.0     0.076    147.6
2022.0     0.114     74.7
2023.0     0.179     48.9
2024.0     0.229     36.1
2025.0     0.265     27.3
2026.0     0.293     20.5
2027.0     0.314     14.7
2028.0     0.330      9.6
2029.0     0.342      4.9
2030.0     0.351      0.5
2031.0     0.358    356.2
2032.0     0.362    352.1
2033.0     0.364    348.1
2034.0     0.365    344.1
2035.0     0.364    340.1
2036.0     0.363    336.0
2037.0     0.360    332.0
2038.0     0.357    327.8
2039.0     0.353    323.6
2040.0     0.348    319.2
2041.0     0.342    314.7

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.