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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:31:40

Orbital Elements for A1634AB
WDS: A1634AB WDS ID/Discoverer
P: 9.026 Orbital period (years)
a: 0.0615 Semi-major axis (arcseconds)
i: 109.7 Inclination (degrees)
Ω: 199.4 Longitude of ascending node (degrees)
T: 2000.750 Epoch of periastron passage (year)
e: 0.006 Eccentricity
ω: 293.0 Longitude of periastron (degrees)
Start-Year: 2021.0 Year
End-Year: 2029.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1634AB
Position: 153146.99+405357.7 Epoch-2000 right ascension and declination
WDS-ID: 15318+4054 WDS designation
Discoverer Code: A1634AB Discover designation and components
ADS number: 9688 Aitken Double Star catalog
HD number: 138629 HD catalog number
Hipparcos number: 76041 Hipparcos catalog number
V1: 5.8 Magnitude of the primary
V2: 5.8 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 1 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A1634AB



WDS 6th Orbit including measures of A1634AB

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


Ephemeris of A1634AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.062     19.5
-------------------------
2021.0     0.058    191.9
2022.0     0.035    168.0
2023.0     0.023     80.4
2024.0     0.049     35.2
2025.0     0.062     19.5
2026.0     0.049      3.9
2027.0     0.023    318.0
2028.0     0.035    229.7






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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