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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:54:04

Orbital Elements for HDS1409

WDS:	HDS1409	WDS ID/Discoverer
P:	33.980	Orbital period (years)
a:	0.497	Semi-major axis (arcseconds)
i:	112.4	Inclination (degrees)
Ω:	29.1	Longitude of ascending node (degrees)
T:	1997.383	Epoch of periastron passage (year)
e:	0.479	Eccentricity
ω:	121.0	Longitude of periastron (degrees)
Start-Year:	2009.0	Year
End-Year:	2041.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1409

Position:	094540.09-390226.4	Epoch-2000 right ascension and declination
WDS-ID:	09457-3902	WDS designation
Discoverer Code:	HDS1409	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	12.64	Magnitude of the primary
V2:	13.18	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS1409

WDS 6th Orbit including measures of HDS1409

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

Ephemeris of HDS1409

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.517     29.8
-------------------------
2009.0     0.270    101.3
2010.0     0.297     90.4
2011.0     0.330     81.5
2012.0     0.365     74.2
2013.0     0.400     68.2
2014.0     0.436     63.2
2015.0     0.469     58.9
2016.0     0.500     55.1
2017.0     0.527     51.8
2018.0     0.550     48.8
2019.0     0.568     46.0
2020.0     0.580     43.4
2021.0     0.585     40.8
2022.0     0.583     38.2
2023.0     0.572     35.6
2024.0     0.550     32.8
2025.0     0.517     29.8
2026.0     0.469     26.2
2027.0     0.405     21.6
2028.0     0.323     14.9
2029.0     0.222      2.8
2030.0     0.123    329.9
2031.0     0.126    257.6
2032.0     0.219    225.4
2033.0     0.292    212.1
2034.0     0.329    203.1
2035.0     0.337    195.3
2036.0     0.326    187.4
2037.0     0.306    178.6
2038.0     0.283    168.5
2039.0     0.262    156.6
2040.0     0.247    143.0

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.