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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:43:28
WDS:
MLR4
WDS ID/Discoverer
P:
20.750
Orbital period (years)
a:
0.1472
Semi-major axis (arcseconds)
i:
52.53
Inclination (degrees)
Ω:
108.02
Longitude of ascending node (degrees)
T:
1989.287
Epoch of periastron passage (year)
e:
0.2915
Eccentricity
ω:
291.2
Longitude of periastron (degrees)
Start-Year:
2015.0
Year
End-Year:
2035.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
234105.55+461306.0
Epoch-2000 right ascension and declination
WDS-ID:
23411+4613
WDS designation
Discoverer Code:
MLR4
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
222516
HD catalog number
Hipparcos number:
116849
Hipparcos catalog number
V1:
7.67
Magnitude of the primary
V2:
8.03
Magnitude of the secondary
Equinox:
2000
Equinox
Date:
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 0.160 276.4
-------------------------
2015.0 0.125 143.6
2016.0 0.118 158.5
2017.0 0.113 175.0
2018.0 0.112 192.5
2019.0 0.116 209.5
2020.0 0.124 224.8
2021.0 0.134 238.0
2022.0 0.145 249.3
2023.0 0.154 259.0
2024.0 0.160 267.9
2025.0 0.160 276.4
2026.0 0.154 285.2
2027.0 0.140 295.3
2028.0 0.116 308.6
2029.0 0.087 330.2
2030.0 0.065 10.8
2031.0 0.075 59.5
2032.0 0.101 88.6
2033.0 0.120 106.4
2034.0 0.129 120.3
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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