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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:19:07

Orbital Elements for STF2758A
WDS: STF2758A WDS ID/Discoverer
P: 4.900 Orbital period (years)
a: 0.14 Semi-major axis (arcseconds)
i: 134.0 Inclination (degrees)
Ω: 94.0 Longitude of ascending node (degrees)
T: 1953.200 Epoch of periastron passage (year)
e: 0.5 Eccentricity
ω: 295.0 Longitude of periastron (degrees)
Start-Year: 2023.0 Year
End-Year: 2027.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF2758A
Position: 210653.94+384457.8 Epoch-2000 right ascension and declination
WDS-ID: 21069+3845 WDS designation
Discoverer Code: STF2758A Discover designation and components
ADS number: 14636 Aitken Double Star catalog
HD number: 201091 HD catalog number
Hipparcos number: 104214 Hipparcos catalog number
V1: 5.20v Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: Equinox
Date: 1958 Date of last observation
Orbit grade: 9 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF2758A



WDS 6th Orbit including measures of STF2758A

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


Ephemeris of STF2758A
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.171    306.7
-------------------------
2023.0     0.122     26.3
2024.0     0.152    339.1
2025.0     0.171    306.7
2026.0     0.127    270.9






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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