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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:21:03

Orbital Elements for HDS3039

WDS:	HDS3039	WDS ID/Discoverer
P:	32.340	Orbital period (years)
a:	0.265	Semi-major axis (arcseconds)
i:	106.1	Inclination (degrees)
Ω:	200.7	Longitude of ascending node (degrees)
T:	2019.760	Epoch of periastron passage (year)
e:	0.39	Eccentricity
ω:	146.5	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 HDS3039

Position:	212045.58-404834.2	Epoch-2000 right ascension and declination
WDS-ID:	21208-4049	WDS designation
Discoverer Code:	HDS3039	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	203006	HD catalog number
Hipparcos number:	105382	Hipparcos catalog number
V1:	4.93	Magnitude of the primary
V2:	7.42	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS3039

WDS 6th Orbit including measures of HDS3039

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

Ephemeris of HDS3039

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.106    343.0
-------------------------
2009.0     0.338    201.6
2010.0     0.326    199.8
2011.0     0.308    197.8
2012.0     0.283    195.5
2013.0     0.251    192.7
2014.0     0.211    188.9
2015.0     0.165    183.2
2016.0     0.112    172.5
2017.0     0.063    143.6
2018.0     0.058     76.0
2019.0     0.103     41.7
2020.0     0.146     28.7
2021.0     0.169     20.8
2022.0     0.171     14.1
2023.0     0.157      6.7
2024.0     0.133    357.2
2025.0     0.106    343.0
2026.0     0.084    320.2
2027.0     0.080    289.1
2028.0     0.095    261.9
2029.0     0.123    244.6
2030.0     0.154    234.1
2031.0     0.187    227.2
2032.0     0.218    222.3
2033.0     0.246    218.6
2034.0     0.272    215.6
2035.0     0.295    213.1
2036.0     0.313    211.0
2037.0     0.328    209.0
2038.0     0.339    207.2
2039.0     0.344    205.5
2040.0     0.345    203.9

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.