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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:19:21

Orbital Elements for BU612AB
WDS: BU612AB WDS ID/Discoverer
P: 22.460 Orbital period (years)
a: 0.19983 Semi-major axis (arcseconds)
i: 43.5 Inclination (degrees)
Ω: 34.58 Longitude of ascending node (degrees)
T: 1929.850 Epoch of periastron passage (year)
e: 0.545 Eccentricity
ω: 359.93 Longitude of periastron (degrees)
Start-Year: 2014.0 Year
End-Year: 2036.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU612AB
Position: 133934.68+104446.7 Epoch-2000 right ascension and declination
WDS-ID: 13396+1045 WDS designation
Discoverer Code: BU612AB Discover designation and components
ADS number: 8987 Aitken Double Star catalog
HD number: 118889 HD catalog number
Hipparcos number: 66640 Hipparcos catalog number
V1: 6.35 Magnitude of the primary
V2: 6.47 Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 1 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU612AB



WDS 6th Orbit including measures of BU612AB

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


Ephemeris of BU612AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.219    184.1
-------------------------
2014.0     0.231    242.1
2015.0     0.200    250.5
2016.0     0.164    262.3
2017.0     0.127    281.0
2018.0     0.096    313.7
2019.0     0.089      1.4
2020.0     0.090     49.2
2021.0     0.090     98.2
2022.0     0.113    137.6
2023.0     0.150    160.7
2024.0     0.187    174.6
2025.0     0.219    184.1
2026.0     0.247    191.2
2027.0     0.270    197.0
2028.0     0.287    202.0
2029.0     0.299    206.5
2030.0     0.307    210.8
2031.0     0.309    214.9
2032.0     0.306    219.0
2033.0     0.298    223.2
2034.0     0.285    227.8
2035.0     0.267    232.9






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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