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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:19:43

Orbital Elements for LEI1BC
WDS: LEI1BC WDS ID/Discoverer
P: 17.247 Orbital period (years)
a: 0.4598 Semi-major axis (arcseconds)
i: 62.04 Inclination (degrees)
Ω: 14.82 Longitude of ascending node (degrees)
T: 2006.440 Epoch of periastron passage (year)
e: 0.0172 Eccentricity
ω: 202.53 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 LEI1BC
Position: 002444.24-270826.5 Epoch-2000 right ascension and declination
WDS-ID: 00247-2653 WDS designation
Discoverer Code: LEI1BC Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 18.69 Magnitude of the primary
V2: 19.07 Magnitude of the secondary
Equinox: Equinox
Date: 2017 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for LEI1BC



WDS 6th Orbit including measures of LEI1BC

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


Ephemeris of LEI1BC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.330    224.8
-------------------------
2017.0     0.293     55.9
2018.0     0.225     88.4
2019.0     0.234    130.6
2020.0     0.310    159.7
2021.0     0.392    176.5
2022.0     0.443    188.2
2023.0     0.449    198.4
2024.0     0.408    209.6
2025.0     0.330    224.8
2026.0     0.246    250.6
2027.0     0.216    292.3
2028.0     0.274    329.0
2029.0     0.362    349.9
2030.0     0.433      2.9
2031.0     0.466     13.0
2032.0     0.453     22.6






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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