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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:39:32
WDS:
RST321
WDS ID/Discoverer
P:
25.780
Orbital period (years)
a:
0.31
Semi-major axis (arcseconds)
i:
40.9
Inclination (degrees)
Ω:
128.6
Longitude of ascending node (degrees)
T:
2000.850
Epoch of periastron passage (year)
e:
0.219
Eccentricity
ω:
232.1
Longitude of periastron (degrees)
Start-Year:
2013.0
Year
End-Year:
2037.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
082504.14-490935.0
Epoch-2000 right ascension and declination
WDS-ID:
08251-4910
WDS designation
Discoverer Code:
RST321
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
71386
HD catalog number
Hipparcos number:
41261
Hipparcos catalog number
V1:
8.27
Magnitude of the primary
V2:
8.94
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
2014
Date of last observation
Orbit grade:
2
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 0.246 321.2
-------------------------
2013.0 0.334 166.0
2014.0 0.320 175.2
2015.0 0.304 185.4
2016.0 0.289 196.7
2017.0 0.276 209.1
2018.0 0.268 222.5
2019.0 0.264 236.6
2020.0 0.264 250.8
2021.0 0.267 264.9
2022.0 0.270 278.6
2023.0 0.270 292.1
2024.0 0.262 306.0
2025.0 0.246 321.2
2026.0 0.223 339.2
2027.0 0.199 1.6
2028.0 0.189 28.3
2029.0 0.199 55.1
2030.0 0.227 77.2
2031.0 0.260 94.0
2032.0 0.293 107.0
2033.0 0.319 117.5
2034.0 0.338 126.7
2035.0 0.349 135.1
2036.0 0.353 143.1
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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