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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:00:23

Orbital Elements for NOI5
WDS: NOI5 WDS ID/Discoverer
P: 2.283 Orbital period (years)
a: 0.0028 Semi-major axis (arcseconds)
i: 105.9 Inclination (degrees)
Ω: 288.1 Longitude of ascending node (degrees)
T: 1920.426 Epoch of periastron passage (year)
e: 0.35 Eccentricity
ω: 33.9 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 NOI5
Position: 184710.48-044452.2 Epoch-2000 right ascension and declination
WDS-ID: 18472-0445 WDS designation
Discoverer Code: NOI5 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 173764 HD catalog number
Hipparcos number: 92175 Hipparcos catalog number
V1: 4.23 Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: 2000 Equinox
Date: Date of last observation
Orbit grade: 9 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for NOI5



WDS 6th Orbit including measures of NOI5

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


Ephemeris of NOI5
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.001    343.9
-------------------------
2024.0     0.004    106.2
2025.0     0.001    343.9






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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