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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:37:46

Orbital Elements for HDS2309
WDS: HDS2309 WDS ID/Discoverer
P: 29.906 Orbital period (years)
a: 0.1469 Semi-major axis (arcseconds)
i: 36.8 Inclination (degrees)
Ω: 77.5 Longitude of ascending node (degrees)
T: 2016.237 Epoch of periastron passage (year)
e: 0.614 Eccentricity
ω: 41.0 Longitude of periastron (degrees)
Start-Year: 2011.0 Year
End-Year: 2039.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2309
Position: 162035.00+453444.6 Epoch-2000 right ascension and declination
WDS-ID: 16206+4535 WDS designation
Discoverer Code: HDS2309 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 147544 HD catalog number
Hipparcos number: 80074 Hipparcos catalog number
V1: 7.74 Magnitude of the primary
V2: 10.68 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for HDS2309



WDS 6th Orbit including measures of HDS2309

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


Ephemeris of HDS2309
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.204    270.7
-------------------------
2011.0     0.128    343.9
2012.0     0.113    355.3
2013.0     0.099     10.0
2014.0     0.085     29.8
2015.0     0.071     57.2
2016.0     0.055     98.8
2017.0     0.051    162.4
2018.0     0.074    207.8
2019.0     0.103    229.3
2020.0     0.128    241.6
2021.0     0.150    250.1
2022.0     0.168    256.6
2023.0     0.183    261.9
2024.0     0.195    266.5
2025.0     0.204    270.7
2026.0     0.211    274.5
2027.0     0.216    278.1
2028.0     0.219    281.5
2029.0     0.221    284.9
2030.0     0.220    288.3
2031.0     0.219    291.7
2032.0     0.215    295.2
2033.0     0.210    298.8
2034.0     0.204    302.6
2035.0     0.197    306.7
2036.0     0.188    311.1
2037.0     0.178    316.1
2038.0     0.166    321.6






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 4.0.


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.


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