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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:37:56

Orbital Elements for EHR11A
WDS: EHR11A WDS ID/Discoverer
P: 2.533 Orbital period (years)
a: 0.0273 Semi-major axis (arcseconds)
i: 30.0 Inclination (degrees)
Ω: 340.0 Longitude of ascending node (degrees)
T: 1991.700 Epoch of periastron passage (year)
e: 0.08 Eccentricity
ω: 56.0 Longitude of periastron (degrees)
Start-Year: 2024.0 Year
End-Year: 2026.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for EHR11A
Position: 080900.86-611806.1 Epoch-2000 right ascension and declination
WDS-ID: 08090-6118 WDS designation
Discoverer Code: EHR11A Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 68456 HD catalog number
Hipparcos number: 39903 Hipparcos catalog number
V1: 4.76 Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: Equinox
Date: 1991 Date of last observation
Orbit grade: 9 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for EHR11A



WDS 6th Orbit including measures of EHR11A

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


Ephemeris of EHR11A
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.023    100.9
-------------------------
2024.0     0.026    302.3
2025.0     0.023    100.9






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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