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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:23:51

Orbital Elements for I402
WDS: I402 WDS ID/Discoverer
P: 26.210 Orbital period (years)
a: 0.171 Semi-major axis (arcseconds)
i: 83.6 Inclination (degrees)
Ω: 177.5 Longitude of ascending node (degrees)
T: 2026.460 Epoch of periastron passage (year)
e: 0.591 Eccentricity
ω: 222.2 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 I402
Position: 142610.80-452245.3 Epoch-2000 right ascension and declination
WDS-ID: 14262-4523 WDS designation
Discoverer Code: I402 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 126354 HD catalog number
Hipparcos number: 70576 Hipparcos catalog number
V1: 4.93 Magnitude of the primary
V2: 5.55 Magnitude of the secondary
Equinox: Equinox
Date: 2021 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for I402



WDS 6th Orbit including measures of I402

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


Ephemeris of I402
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.081    353.2
-------------------------
2012.0     0.218    182.2
2013.0     0.207    183.0
2014.0     0.193    183.9
2015.0     0.176    184.9
2016.0     0.157    186.2
2017.0     0.135    187.9
2018.0     0.111    190.3
2019.0     0.086    194.1
2020.0     0.059    201.2
2021.0     0.033    220.2
2022.0     0.021    285.3
2023.0     0.040    332.8
2024.0     0.065    346.6
2025.0     0.081    353.2
2026.0     0.072    358.9
2027.0     0.019     22.2
2028.0     0.052    167.0
2029.0     0.108    173.2
2030.0     0.149    175.4
2031.0     0.180    176.7
2032.0     0.203    177.7
2033.0     0.218    178.5
2034.0     0.227    179.3
2035.0     0.232    179.9
2036.0     0.232    180.6
2037.0     0.228    181.3






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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