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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:28:46

Orbital Elements for 18MON
WDS: 18MON WDS ID/Discoverer
P: 4.821 Orbital period (years)
a: 0.00663 Semi-major axis (arcseconds)
i: 96.25 Inclination (degrees)
Ω: 47.63 Longitude of ascending node (degrees)
T: 1973.711 Epoch of periastron passage (year)
e: 0.4 Eccentricity
ω: 172.0 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 18MON
Position: 064751.66+022443.9 Epoch-2000 right ascension and declination
WDS-ID: 06479+0225 WDS designation
Discoverer Code: 18MON Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 49293 HD catalog number
Hipparcos number: 32578 Hipparcos catalog number
V1: 4.48 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: n Flags

Double Star Orbit for 18MON



WDS 6th Orbit including measures of 18MON

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


Ephemeris of 18MON
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.008     45.8
-------------------------
2023.0     0.003     59.8
2024.0     0.009     49.9
2025.0     0.008     45.8
2026.0     0.002     31.0






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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