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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:31:26

Orbital Elements for YSC74
WDS: YSC74 WDS ID/Discoverer
P: 4.249 Orbital period (years)
a: 0.046 Semi-major axis (arcseconds)
i: 89.0 Inclination (degrees)
Ω: 212.0 Longitude of ascending node (degrees)
T: 1993.124 Epoch of periastron passage (year)
e: 0.4 Eccentricity
ω: 101.0 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 YSC74
Position: 220557.13+081308.6 Epoch-2000 right ascension and declination
WDS-ID: 22060+0813 WDS designation
Discoverer Code: YSC74 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 109095 Hipparcos catalog number
V1: 11.4 Magnitude of the primary
V2: 12.7 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: Flags

Double Star Orbit for YSC74



WDS 6th Orbit including measures of YSC74

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


Ephemeris of YSC74
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.013    207.0
-------------------------
2023.0     0.018     30.8
2024.0     0.030     33.5
2025.0     0.013    207.0
2026.0     0.045    211.3






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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