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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:42:53

Orbital Elements for HDS2412AA,AB

WDS:	HDS2412AA,AB	WDS ID/Discoverer
P:	41.320	Orbital period (years)
a:	0.589	Semi-major axis (arcseconds)
i:	133.8	Inclination (degrees)
Ω:	73.6	Longitude of ascending node (degrees)
T:	1999.450	Epoch of periastron passage (year)
e:	0.622	Eccentricity
ω:	94.1	Longitude of periastron (degrees)
Start-Year:	2005.0	Year
End-Year:	2045.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2412AA,AB

Position:	170308.76-531413.1	Epoch-2000 right ascension and declination
WDS-ID:	17031-5314	WDS designation
Discoverer Code:	HDS2412AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	153580	HD catalog number
Hipparcos number:	83431	Hipparcos catalog number
V1:	5.44	Magnitude of the primary
V2:	8.65	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2012	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS2412AA,AB

WDS 6th Orbit including measures of HDS2412AA,AB

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

Ephemeris of HDS2412AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.664    139.6
-------------------------
2005.0     0.493    225.6
2006.0     0.522    219.3
2007.0     0.546    213.5
2008.0     0.565    208.2
2009.0     0.582    203.3
2010.0     0.596    198.5
2011.0     0.608    194.0
2012.0     0.618    189.6
2013.0     0.627    185.4
2014.0     0.634    181.3
2015.0     0.641    177.3
2016.0     0.647    173.3
2017.0     0.652    169.4
2018.0     0.656    165.6
2019.0     0.660    161.8
2020.0     0.663    158.1
2021.0     0.665    154.4
2022.0     0.666    150.7
2023.0     0.666    147.0
2024.0     0.665    143.3
2025.0     0.664    139.6
2026.0     0.660    135.9
2027.0     0.656    132.1
2028.0     0.650    128.2
2029.0     0.641    124.3
2030.0     0.631    120.2
2031.0     0.617    116.0
2032.0     0.601    111.6
2033.0     0.580    106.9
2034.0     0.554    101.8
2035.0     0.522     96.2
2036.0     0.482     89.7
2037.0     0.431     81.8
2038.0     0.365     71.5
2039.0     0.281     55.7
2040.0     0.188     24.5
2041.0     0.161    322.4
2042.0     0.240    278.2
2043.0     0.326    257.5
2044.0     0.393    244.8

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.