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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:32:17
WDS:
STT520
WDS ID/Discoverer
P:
1279.000
Orbital period (years)
a:
0.855
Semi-major axis (arcseconds)
i:
55.5
Inclination (degrees)
Ω:
126.5
Longitude of ascending node (degrees)
T:
1631.700
Epoch of periastron passage (year)
e:
0.411
Eccentricity
ω:
121.5
Longitude of periastron (degrees)
Start-Year:
1386.0
Year
End-Year:
2664.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
071350.16+282938.6
Epoch-2000 right ascension and declination
WDS-ID:
07138+2830
WDS designation
Discoverer Code:
STT520
Discover designation and components
ADS number:
5893
Aitken Double Star catalog
HD number:
55356
HD catalog number
Hipparcos number:
34943
Hipparcos catalog number
V1:
7.14
Magnitude of the primary
V2:
9.22
Magnitude of the secondary
Equinox:
Equinox
Date:
Date of last observation
Orbit grade:
5
Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:
Flags
Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)
Click to expand/collapse ephemeris:
Year Sep[“] PA[°]
---------------------------------------------
2025.0 0.611 31.6
-------------------------
1386.0 0.869 129.2
1396.0 0.850 130.7
1406.0 0.828 132.2
1416.0 0.806 133.8
1426.0 0.781 135.5
1436.0 0.755 137.3
1446.0 0.728 139.2
1456.0 0.699 141.3
1466.0 0.668 143.6
1476.0 0.636 146.0
1486.0 0.603 148.8
1496.0 0.568 151.9
1506.0 0.533 155.4
1516.0 0.496 159.4
1526.0 0.460 164.1
1536.0 0.424 169.5
1546.0 0.390 176.0
1556.0 0.359 183.6
1566.0 0.332 192.5
1576.0 0.311 202.9
1586.0 0.299 214.3
1596.0 0.297 226.3
1606.0 0.304 238.2
1616.0 0.320 249.1
1626.0 0.343 258.8
1636.0 0.370 267.2
1646.0 0.400 274.4
1656.0 0.431 280.5
1666.0 0.461 285.9
1676.0 0.489 290.6
1686.0 0.516 294.8
1696.0 0.539 298.6
1706.0 0.561 302.1
1716.0 0.579 305.4
1726.0 0.595 308.5
1736.0 0.608 311.4
1746.0 0.619 314.2
1756.0 0.627 317.0
1766.0 0.633 319.6
1776.0 0.638 322.3
1786.0 0.641 324.9
1796.0 0.642 327.5
1806.0 0.642 330.0
1816.0 0.641 332.6
1826.0 0.639 335.2
1836.0 0.637 337.8
1846.0 0.634 340.4
1856.0 0.630 343.1
1866.0 0.627 345.8
1876.0 0.623 348.5
1886.0 0.619 351.3
1896.0 0.615 354.1
1906.0 0.611 356.9
1916.0 0.608 359.8
1926.0 0.605 2.6
1936.0 0.603 5.6
1946.0 0.601 8.5
1956.0 0.600 11.4
1966.0 0.599 14.4
1976.0 0.599 17.4
1986.0 0.600 20.3
1996.0 0.602 23.3
2006.0 0.604 26.2
2016.0 0.607 29.1
2026.0 0.611 31.9
2036.0 0.616 34.8
2046.0 0.622 37.5
2056.0 0.628 40.2
2066.0 0.635 42.9
2076.0 0.642 45.5
2086.0 0.651 48.1
2096.0 0.659 50.5
2106.0 0.669 52.9
2116.0 0.678 55.3
2126.0 0.689 57.6
2136.0 0.699 59.8
2146.0 0.710 61.9
2156.0 0.721 64.0
2166.0 0.733 66.0
2176.0 0.745 67.9
2186.0 0.757 69.8
2196.0 0.768 71.6
2206.0 0.781 73.4
2216.0 0.793 75.1
2226.0 0.805 76.8
2236.0 0.817 78.4
2246.0 0.829 80.0
2256.0 0.841 81.5
2266.0 0.852 83.0
2276.0 0.864 84.4
2286.0 0.875 85.8
2296.0 0.886 87.2
2306.0 0.897 88.6
2316.0 0.908 89.9
2326.0 0.918 91.1
2336.0 0.928 92.4
2346.0 0.937 93.6
2356.0 0.946 94.8
2366.0 0.955 96.0
2376.0 0.963 97.1
2386.0 0.971 98.3
2396.0 0.978 99.4
2406.0 0.984 100.5
2416.0 0.990 101.6
2426.0 0.996 102.7
2436.0 1.001 103.7
2446.0 1.005 104.8
2456.0 1.008 105.8
2466.0 1.011 106.9
2476.0 1.013 107.9
2486.0 1.014 108.9
2496.0 1.015 110.0
2506.0 1.014 111.0
2516.0 1.013 112.0
2526.0 1.011 113.1
2536.0 1.008 114.1
2546.0 1.004 115.2
2556.0 0.999 116.2
2566.0 0.993 117.3
2576.0 0.986 118.4
2586.0 0.977 119.5
2596.0 0.968 120.6
2606.0 0.958 121.8
2616.0 0.946 122.9
2626.0 0.933 124.1
2636.0 0.919 125.4
2646.0 0.903 126.7
2656.0 0.886 128.0
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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