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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:00:22

Orbital Elements for PAT8
WDS: PAT8 WDS ID/Discoverer
P: 19.770 Orbital period (years)
a: 0.201 Semi-major axis (arcseconds)
i: 63.0 Inclination (degrees)
Ω: 119.6 Longitude of ascending node (degrees)
T: 2017.390 Epoch of periastron passage (year)
e: 0.649 Eccentricity
ω: 273.7 Longitude of periastron (degrees)
Start-Year: 2016.0 Year
End-Year: 2034.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for PAT8
Position: 042648.19+105216.0 Epoch-2000 right ascension and declination
WDS-ID: 04268+1052 WDS designation
Discoverer Code: PAT8 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 286820 HD catalog number
Hipparcos number: 20751 Hipparcos catalog number
V1: 7.4 Magnitude of the primary
V2: 8.0 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2021 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for PAT8



WDS 6th Orbit including measures of PAT8

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


Ephemeris of PAT8
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.150    192.0
-------------------------
2016.0     0.128    297.5
2017.0     0.055    330.5
2018.0     0.080    106.5
2019.0     0.134    128.4
2020.0     0.155    140.4
2021.0     0.161    150.5
2022.0     0.160    160.3
2023.0     0.157    170.4
2024.0     0.153    180.9
2025.0     0.150    192.0
2026.0     0.149    203.3
2027.0     0.151    214.7
2028.0     0.155    225.6
2029.0     0.160    235.8
2030.0     0.167    245.4
2031.0     0.173    254.2
2032.0     0.177    262.5
2033.0     0.178    270.5






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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