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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 18:25:39
WDS:
STF1878
WDS ID/Discoverer
P:
1555.025
Orbital period (years)
a:
7.5181
Semi-major axis (arcseconds)
i:
99.47
Inclination (degrees)
Ω:
127.92
Longitude of ascending node (degrees)
T:
2134.477
Epoch of periastron passage (year)
e:
0.66919
Eccentricity
ω:
250.047
Longitude of periastron (degrees)
Start-Year:
1248.0
Year
End-Year:
2802.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
144203.25+611542.9
Epoch-2000 right ascension and declination
WDS-ID:
14421+6116
WDS designation
Discoverer Code:
STF1878
Discover designation and components
ADS number:
9357
Aitken Double Star catalog
HD number:
129798
HD catalog number
Hipparcos number:
71876
Hipparcos catalog number
V1:
6.33
Magnitude of the primary
V2:
9.16
Magnitude of the secondary
Equinox:
Equinox
Date:
2015
Date of last observation
Orbit grade:
5
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 4.116 313.8
-------------------------
1248.0 5.857 109.8
1258.0 5.759 109.4
1268.0 5.658 108.9
1278.0 5.556 108.4
1288.0 5.452 107.8
1298.0 5.347 107.3
1308.0 5.241 106.7
1318.0 5.133 106.1
1328.0 5.024 105.5
1338.0 4.914 104.9
1348.0 4.802 104.2
1358.0 4.690 103.5
1368.0 4.577 102.7
1378.0 4.463 101.9
1388.0 4.348 101.1
1398.0 4.233 100.2
1408.0 4.117 99.3
1418.0 4.001 98.4
1428.0 3.885 97.3
1438.0 3.769 96.2
1448.0 3.652 95.1
1458.0 3.537 93.8
1468.0 3.421 92.5
1478.0 3.306 91.1
1488.0 3.193 89.6
1498.0 3.080 88.0
1508.0 2.969 86.2
1518.0 2.860 84.3
1528.0 2.753 82.3
1538.0 2.648 80.1
1548.0 2.547 77.7
1558.0 2.450 75.2
1568.0 2.356 72.4
1578.0 2.268 69.4
1588.0 2.186 66.2
1598.0 2.110 62.7
1608.0 2.041 59.0
1618.0 1.981 55.0
1628.0 1.930 50.8
1638.0 1.889 46.4
1648.0 1.858 41.9
1658.0 1.839 37.2
1668.0 1.831 32.4
1678.0 1.835 27.7
1688.0 1.851 22.9
1698.0 1.878 18.3
1708.0 1.916 13.9
1718.0 1.963 9.6
1728.0 2.020 5.6
1738.0 2.085 1.8
1748.0 2.157 358.2
1758.0 2.236 354.9
1768.0 2.320 351.8
1778.0 2.409 349.0
1788.0 2.501 346.3
1798.0 2.597 343.8
1808.0 2.695 341.6
1818.0 2.794 339.4
1828.0 2.895 337.5
1838.0 2.996 335.6
1848.0 3.097 333.9
1858.0 3.198 332.3
1868.0 3.297 330.8
1878.0 3.394 329.3
1888.0 3.490 328.0
1898.0 3.582 326.7
1908.0 3.671 325.5
1918.0 3.755 324.3
1928.0 3.834 323.2
1938.0 3.908 322.1
1948.0 3.975 321.1
1958.0 4.034 320.1
1968.0 4.084 319.1
1978.0 4.123 318.2
1988.0 4.151 317.3
1998.0 4.165 316.3
2008.0 4.163 315.4
2018.0 4.143 314.5
2028.0 4.100 313.5
2038.0 4.033 312.6
2048.0 3.935 311.6
2058.0 3.803 310.5
2068.0 3.628 309.3
2078.0 3.404 308.1
2088.0 3.122 306.6
2098.0 2.774 304.7
2108.0 2.353 302.3
2118.0 1.859 298.6
2128.0 1.304 292.1
2138.0 0.737 275.3
2148.0 0.422 212.3
2158.0 0.821 159.2
2168.0 1.402 145.2
2178.0 1.976 139.4
2188.0 2.514 136.2
2198.0 3.011 134.1
2208.0 3.466 132.6
2218.0 3.881 131.4
2228.0 4.258 130.4
2238.0 4.603 129.6
2248.0 4.917 128.9
2258.0 5.203 128.3
2268.0 5.464 127.7
2278.0 5.702 127.2
2288.0 5.920 126.8
2298.0 6.119 126.3
2308.0 6.300 125.9
2318.0 6.465 125.5
2328.0 6.616 125.1
2338.0 6.752 124.8
2348.0 6.876 124.4
2358.0 6.988 124.1
2368.0 7.088 123.8
2378.0 7.179 123.5
2388.0 7.259 123.2
2398.0 7.330 122.8
2408.0 7.393 122.6
2418.0 7.447 122.3
2428.0 7.493 122.0
2438.0 7.532 121.7
2448.0 7.564 121.4
2458.0 7.590 121.1
2468.0 7.609 120.9
2478.0 7.621 120.6
2488.0 7.629 120.3
2498.0 7.630 120.0
2508.0 7.626 119.8
2518.0 7.617 119.5
2528.0 7.604 119.2
2538.0 7.585 118.9
2548.0 7.562 118.6
2558.0 7.535 118.4
2568.0 7.503 118.1
2578.0 7.468 117.8
2588.0 7.429 117.5
2598.0 7.386 117.2
2608.0 7.339 116.9
2618.0 7.289 116.6
2628.0 7.235 116.3
2638.0 7.178 116.0
2648.0 7.118 115.7
2658.0 7.055 115.4
2668.0 6.990 115.1
2678.0 6.921 114.7
2688.0 6.849 114.4
2698.0 6.775 114.0
2708.0 6.699 113.7
2718.0 6.619 113.3
2728.0 6.538 113.0
2738.0 6.454 112.6
2748.0 6.368 112.2
2758.0 6.280 111.8
2768.0 6.189 111.4
2778.0 6.097 111.0
2788.0 6.003 110.5
2798.0 5.907 110.1
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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