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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:30:05

Orbital Elements for LDS838
WDS: LDS838 WDS ID/Discoverer
P: 26.359 Orbital period (years)
a: 2.0496 Semi-major axis (arcseconds)
i: 128.09 Inclination (degrees)
Ω: 146.29 Longitude of ascending node (degrees)
T: 2024.771 Epoch of periastron passage (year)
e: 0.6222 Eccentricity
ω: 283.34 Longitude of periastron (degrees)
Start-Year: 2012.0 Year
End-Year: 2038.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for LDS838
Position: 013901.54-175701.8 Epoch-2000 right ascension and declination
WDS-ID: 01388-1758 WDS designation
Discoverer Code: LDS838 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 12.7 Magnitude of the primary
V2: 13.2 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for LDS838



WDS 6th Orbit including measures of LDS838

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


Ephemeris of LDS838
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.578    192.8
-------------------------
2012.0     2.159     32.8
2013.0     2.204     27.0
2014.0     2.242     21.4
2015.0     2.268     15.9
2016.0     2.279     10.6
2017.0     2.270      5.2
2018.0     2.236    359.8
2019.0     2.170    354.1
2020.0     2.060    347.9
2021.0     1.890    340.9
2022.0     1.636    332.0
2023.0     1.255    318.7
2024.0     0.714    288.4
2025.0     0.578    192.8
2026.0     1.063    148.4
2027.0     1.362    129.8
2028.0     1.529    116.6
2029.0     1.632    105.5
2030.0     1.705     95.6
2031.0     1.763     86.4
2032.0     1.816     77.8
2033.0     1.869     69.6
2034.0     1.922     61.9
2035.0     1.977     54.6
2036.0     2.033     47.7
2037.0     2.088     41.2






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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