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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:38:43

Orbital Elements for BLA12AA,AB
WDS: BLA12AA,AB WDS ID/Discoverer
P: 5.640 Orbital period (years)
a: 0.061 Semi-major axis (arcseconds)
i: 152.0 Inclination (degrees)
Ω: 318.0 Longitude of ascending node (degrees)
T: 2003.600 Epoch of periastron passage (year)
e: 0.22 Eccentricity
ω: 55.0 Longitude of periastron (degrees)
Start-Year: 2023.0 Year
End-Year: 2027.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BLA12AA,AB
Position: 230155.26+421933.5 Epoch-2000 right ascension and declination
WDS-ID: 23019+4220 WDS designation
Discoverer Code: BLA12AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 217675 HD catalog number
Hipparcos number: 113726 Hipparcos catalog number
V1: 3.8 Magnitude of the primary
V2: 5.7 Magnitude of the secondary
Equinox: Equinox
Date: 1997 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BLA12AA,AB



WDS 6th Orbit including measures of BLA12AA,AB

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


Ephemeris of BLA12AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.057    358.8
-------------------------
2023.0     0.070    100.8
2024.0     0.064     55.7
2025.0     0.057    358.8
2026.0     0.046    282.7






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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