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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:40:00

Orbital Elements for TOK51AA,AB
WDS: TOK51AA,AB WDS ID/Discoverer
P: 25.000 Orbital period (years)
a: 0.262 Semi-major axis (arcseconds)
i: 95.8 Inclination (degrees)
Ω: 59.9 Longitude of ascending node (degrees)
T: 2027.730 Epoch of periastron passage (year)
e: 0.328 Eccentricity
ω: 206.9 Longitude of periastron (degrees)
Start-Year: 2013.0 Year
End-Year: 2037.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for TOK51AA,AB
Position: 163831.07-572811.4 Epoch-2000 right ascension and declination
WDS-ID: 16385-5728 WDS designation
Discoverer Code: TOK51AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 149499 HD catalog number
Hipparcos number: 81478 Hipparcos catalog number
V1: 8.7 Magnitude of the primary
V2: 12.7 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for TOK51AA,AB



WDS 6th Orbit including measures of TOK51AA,AB

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


Ephemeris of TOK51AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.151    245.7
-------------------------
2013.0     0.336     58.9
2014.0     0.330     58.1
2015.0     0.315     57.2
2016.0     0.292     56.2
2017.0     0.261     54.9
2018.0     0.223     53.3
2019.0     0.178     51.0
2020.0     0.129     46.9
2021.0     0.076     37.2
2022.0     0.030    351.5
2023.0     0.054    268.0
2024.0     0.106    251.5
2025.0     0.151    245.7
2026.0     0.178    242.3
2027.0     0.178    239.4
2028.0     0.145    235.8
2029.0     0.083    228.3
2030.0     0.021    160.9
2031.0     0.078     75.9
2032.0     0.148     67.7
2033.0     0.208     64.7
2034.0     0.256     62.9
2035.0     0.293     61.7
2036.0     0.318     60.7






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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