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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:29:40

Orbital Elements for DAW31AB
WDS: DAW31AB WDS ID/Discoverer
P: 4.559 Orbital period (years)
a: 0.1669 Semi-major axis (arcseconds)
i: 11.9 Inclination (degrees)
Ω: 168.6 Longitude of ascending node (degrees)
T: 2010.127 Epoch of periastron passage (year)
e: 0.3142 Eccentricity
ω: 298.9 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 DAW31AB
Position: 013500.96-295438.0 Epoch-2000 right ascension and declination
WDS-ID: 01350-2955 WDS designation
Discoverer Code: DAW31AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 9770 HD catalog number
Hipparcos number: 7372 Hipparcos catalog number
V1: 7.51 Magnitude of the primary
V2: 8.94 Magnitude of the secondary
Equinox: 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 DAW31AB



WDS 6th Orbit including measures of DAW31AB

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


Ephemeris of DAW31AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.182    234.3
-------------------------
2023.0     0.159      7.2
2024.0     0.118    138.4
2025.0     0.182    234.3
2026.0     0.215    284.3






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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