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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:15:36
WDS:
STF1728AB
WDS ID/Discoverer
P:
25.852
Orbital period (years)
a:
0.67144
Semi-major axis (arcseconds)
i:
90.0501
Inclination (degrees)
Ω:
12.2272
Longitude of ascending node (degrees)
T:
2015.094
Epoch of periastron passage (year)
e:
0.5106
Eccentricity
ω:
280.563
Longitude of periastron (degrees)
Start-Year:
2013.0
Year
End-Year:
2037.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
130959.28+173146.0
Epoch-2000 right ascension and declination
WDS-ID:
13100+1732
WDS designation
Discoverer Code:
STF1728AB
Discover designation and components
ADS number:
8804
Aitken Double Star catalog
HD number:
114378
HD catalog number
Hipparcos number:
64241
Hipparcos catalog number
V1:
4.85
Magnitude of the primary
V2:
5.53
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2015
Date of last observation
Orbit grade:
1
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
n
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.097 11.7
-------------------------
2013.0 0.437 192.2
2014.0 0.238 192.2
2015.0 0.034 12.7
2016.0 0.288 12.3
2017.0 0.443 12.2
2018.0 0.509 12.2
2019.0 0.515 12.2
2020.0 0.484 12.2
2021.0 0.430 12.2
2022.0 0.359 12.1
2023.0 0.278 12.1
2024.0 0.189 12.0
2025.0 0.097 11.7
2026.0 0.003 355.2
2027.0 0.091 192.8
2028.0 0.184 192.5
2029.0 0.274 192.4
2030.0 0.358 192.4
2031.0 0.437 192.3
2032.0 0.507 192.3
2033.0 0.565 192.3
2034.0 0.611 192.3
2035.0 0.638 192.3
2036.0 0.642 192.3
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 .
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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