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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:33:42

Orbital Elements for BU290A
WDS: BU290A WDS ID/Discoverer
P: 2.404 Orbital period (years)
a: 0.0109 Semi-major axis (arcseconds)
i: 93.0 Inclination (degrees)
Ω: 272.0 Longitude of ascending node (degrees)
T: 1992.592 Epoch of periastron passage (year)
e: 0.29 Eccentricity
ω: 93.0 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 BU290A
Position: 222637.22+042337.1 Epoch-2000 right ascension and declination
WDS-ID: 22266+0424 WDS designation
Discoverer Code: BU290A Discover designation and components
ADS number: 15935 Aitken Double Star catalog
HD number: 212754 HD catalog number
Hipparcos number: 110785 Hipparcos catalog number
V1: 5.81 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 BU290A



WDS 6th Orbit including measures of BU290A

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


Ephemeris of BU290A
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.001     18.2
-------------------------
2024.0     0.006     94.9
2025.0     0.001     18.2






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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