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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:25:01

Orbital Elements for CHR42AA,AB
WDS: CHR42AA,AB WDS ID/Discoverer
P: 21.540 Orbital period (years)
a: 0.143 Semi-major axis (arcseconds)
i: 53.7 Inclination (degrees)
Ω: 312.4 Longitude of ascending node (degrees)
T: 1994.640 Epoch of periastron passage (year)
e: 0.844 Eccentricity
ω: 41.9 Longitude of periastron (degrees)
Start-Year: 2015.0 Year
End-Year: 2035.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR42AA,AB
Position: 143728.49+021638.7 Epoch-2000 right ascension and declination
WDS-ID: 14375+0217 WDS designation
Discoverer Code: CHR42AA,AB Discover designation and components
ADS number: 9323 Aitken Double Star catalog
HD number: 128563 HD catalog number
Hipparcos number: 71510 Hipparcos catalog number
V1: 6.6 Magnitude of the primary
V2: 8.5 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2014 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for CHR42AA,AB



WDS 6th Orbit including measures of CHR42AA,AB

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


Ephemeris of CHR42AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.226    156.2
-------------------------
2015.0     0.052    227.4
2016.0     0.027    303.7
2017.0     0.065    120.1
2018.0     0.117    133.7
2019.0     0.152    139.7
2020.0     0.177    143.7
2021.0     0.195    146.8
2022.0     0.209    149.5
2023.0     0.218    151.8
2024.0     0.224    154.1
2025.0     0.226    156.2
2026.0     0.225    158.3
2027.0     0.222    160.5
2028.0     0.216    162.7
2029.0     0.207    165.2
2030.0     0.196    167.8
2031.0     0.182    170.9
2032.0     0.165    174.5
2033.0     0.145    179.0
2034.0     0.123    185.1






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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