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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:16:20

Orbital Elements for A494AB
WDS: A494AB WDS ID/Discoverer
P: 20.130 Orbital period (years)
a: 0.208 Semi-major axis (arcseconds)
i: 71.7 Inclination (degrees)
Ω: 96.8 Longitude of ascending node (degrees)
T: 1959.030 Epoch of periastron passage (year)
e: 0.392 Eccentricity
ω: 273.2 Longitude of periastron (degrees)
Start-Year: 2015.0 Year
End-Year: 2035.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A494AB
Position: 054253.91-064746.7 Epoch-2000 right ascension and declination
WDS-ID: 05429-0648 WDS designation
Discoverer Code: A494AB Discover designation and components
ADS number: 4299 Aitken Double Star catalog
HD number: 38089 HD catalog number
Hipparcos number: 26926 Hipparcos catalog number
V1: 6.51 Magnitude of the primary
V2: 7.24 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2006 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A494AB



WDS 6th Orbit including measures of A494AB

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


Ephemeris of A494AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.168    118.0
-------------------------
2015.0     0.197    266.6
2016.0     0.194    272.4
2017.0     0.170    279.0
2018.0     0.121    289.6
2019.0     0.052    325.7
2020.0     0.072     66.8
2021.0     0.137     88.8
2022.0     0.176     97.8
2023.0     0.189    104.4
2024.0     0.184    110.8
2025.0     0.168    118.0
2026.0     0.145    127.1
2027.0     0.121    139.9
2028.0     0.100    158.6
2029.0     0.091    183.9
2030.0     0.098    209.8
2031.0     0.117    229.6
2032.0     0.142    243.1
2033.0     0.166    252.6
2034.0     0.185    259.8






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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