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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:21:44

Orbital Elements for LPR2
WDS: LPR2 WDS ID/Discoverer
P: 16.510 Orbital period (years)
a: 0.1359 Semi-major axis (arcseconds)
i: 157.0 Inclination (degrees)
Ω: 208.0 Longitude of ascending node (degrees)
T: 2025.094 Epoch of periastron passage (year)
e: 0.825 Eccentricity
ω: 45.0 Longitude of periastron (degrees)
Start-Year: 2017.0 Year
End-Year: 2033.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for LPR2
Position: 140449.48-315933.0 Epoch-2000 right ascension and declination
WDS-ID: 14048-3200 WDS designation
Discoverer Code: LPR2 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 14.9 Magnitude of the primary
V2: 16.1 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for LPR2



WDS 6th Orbit including measures of LPR2

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


Ephemeris of LPR2
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.026    199.4
-------------------------
2017.0     0.238    344.8
2018.0     0.234    341.0
2019.0     0.225    337.0
2020.0     0.210    332.6
2021.0     0.191    327.4
2022.0     0.165    320.8
2023.0     0.131    311.2
2024.0     0.086    292.9
2025.0     0.026    199.4
2026.0     0.082     37.5
2027.0     0.133     18.9
2028.0     0.170      9.7
2029.0     0.196      3.4
2030.0     0.215    358.5
2031.0     0.228    354.3
2032.0     0.236    350.4






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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