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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:55:24

Orbital Elements for RUC7
WDS: RUC7 WDS ID/Discoverer
P: 19.590 Orbital period (years)
a: 0.055600000000000004 Semi-major axis (arcseconds)
i: 94.4 Inclination (degrees)
Ω: 356.0 Longitude of ascending node (degrees)
T: 1955.636 Epoch of periastron passage (year)
e: 0.12 Eccentricity
ω: 247.3 Longitude of periastron (degrees)
Start-Year: 2016.0 Year
End-Year: 2034.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RUC7
Position: 100140.39+172433.2 Epoch-2000 right ascension and declination
WDS-ID: 10017+1725 WDS designation
Discoverer Code: RUC7 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 49136 Hipparcos catalog number
V1: 9.45 Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: Equinox
Date: 2002 Date of last observation
Orbit grade: 9 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for RUC7



WDS 6th Orbit including measures of RUC7

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


Ephemeris of RUC7
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.013    334.6
-------------------------
2016.0     0.013     12.8
2017.0     0.031      2.0
2018.0     0.045    358.9
2019.0     0.054    357.1
2020.0     0.058    355.8
2021.0     0.056    354.5
2022.0     0.050    352.9
2023.0     0.040    350.8
2024.0     0.027    346.9
2025.0     0.013    334.6
2026.0     0.006    225.8
2027.0     0.020    188.6
2028.0     0.034    182.3
2029.0     0.045    179.4
2030.0     0.051    177.6
2031.0     0.052    176.0
2032.0     0.047    174.3
2033.0     0.036    171.8






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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