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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:34:50

Orbital Elements for EGG2AA,AB
WDS: EGG2AA,AB WDS ID/Discoverer
P: 29.710 Orbital period (years)
a: 0.136 Semi-major axis (arcseconds)
i: 7.0 Inclination (degrees)
Ω: 166.0 Longitude of ascending node (degrees)
T: 2013.020 Epoch of periastron passage (year)
e: 0.813 Eccentricity
ω: 164.0 Longitude of periastron (degrees)
Start-Year: 2011.0 Year
End-Year: 2039.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for EGG2AA,AB
Position: 021836.27+401643.7 Epoch-2000 right ascension and declination
WDS-ID: 02186+4017 WDS designation
Discoverer Code: EGG2AA,AB Discover designation and components
ADS number: 1763 Aitken Double Star catalog
HD number: 14189 HD catalog number
Hipparcos number: 10772 Hipparcos catalog number
V1: 7.9 Magnitude of the primary
V2: 7.9 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 EGG2AA,AB



WDS 6th Orbit including measures of EGG2AA,AB

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


Ephemeris of EGG2AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.240    143.9
-------------------------
2011.0     0.093    201.1
2012.0     0.058    224.4
2013.0     0.025    326.1
2014.0     0.057     73.8
2015.0     0.092     98.2
2016.0     0.120    109.8
2017.0     0.144    117.2
2018.0     0.165    122.7
2019.0     0.182    127.0
2020.0     0.196    130.6
2021.0     0.209    133.7
2022.0     0.219    136.6
2023.0     0.228    139.2
2024.0     0.235    141.6
2025.0     0.240    143.9
2026.0     0.244    146.1
2027.0     0.246    148.2
2028.0     0.246    150.4
2029.0     0.246    152.5
2030.0     0.243    154.7
2031.0     0.239    156.9
2032.0     0.234    159.2
2033.0     0.226    161.7
2034.0     0.217    164.3
2035.0     0.206    167.2
2036.0     0.193    170.4
2037.0     0.178    174.2
2038.0     0.160    178.7






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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