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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 19:01:10
WDS:
BU137AB
WDS ID/Discoverer
P:
1135.735
Orbital period (years)
a:
3.61436
Semi-major axis (arcseconds)
i:
76.953
Inclination (degrees)
Ω:
177.051
Longitude of ascending node (degrees)
T:
2080.596
Epoch of periastron passage (year)
e:
0.77425
Eccentricity
ω:
69.393
Longitude of periastron (degrees)
Start-Year:
1458.0
Year
End-Year:
2592.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
185357.56+372249.7
Epoch-2000 right ascension and declination
WDS-ID:
18540+3723
WDS designation
Discoverer Code:
BU137AB
Discover designation and components
ADS number:
.
Aitken Double Star catalog
HD number:
.
HD catalog number
Hipparcos number:
.
Hipparcos catalog number
V1:
8.69
Magnitude of the primary
V2:
9.02
Magnitude of the secondary
Equinox:
Equinox
Date:
2015
Date of last observation
Orbit grade:
4
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 1.517 166.5
-------------------------
1458.0 2.915 23.8
1468.0 2.866 24.5
1478.0 2.816 25.3
1488.0 2.764 26.0
1498.0 2.712 26.8
1508.0 2.658 27.6
1518.0 2.604 28.5
1528.0 2.549 29.4
1538.0 2.493 30.3
1548.0 2.436 31.3
1558.0 2.379 32.3
1568.0 2.321 33.4
1578.0 2.263 34.5
1588.0 2.204 35.7
1598.0 2.146 36.9
1608.0 2.087 38.3
1618.0 2.028 39.7
1628.0 1.969 41.1
1638.0 1.910 42.7
1648.0 1.852 44.4
1658.0 1.794 46.2
1668.0 1.737 48.1
1678.0 1.681 50.1
1688.0 1.626 52.3
1698.0 1.572 54.6
1708.0 1.520 57.0
1718.0 1.470 59.7
1728.0 1.423 62.5
1738.0 1.378 65.5
1748.0 1.336 68.8
1758.0 1.297 72.2
1768.0 1.262 75.8
1778.0 1.231 79.6
1788.0 1.205 83.6
1798.0 1.184 87.7
1808.0 1.168 92.0
1818.0 1.158 96.4
1828.0 1.153 100.8
1838.0 1.153 105.3
1848.0 1.160 109.7
1858.0 1.171 114.1
1868.0 1.187 118.3
1878.0 1.208 122.5
1888.0 1.233 126.4
1898.0 1.262 130.2
1908.0 1.293 133.9
1918.0 1.326 137.3
1928.0 1.361 140.6
1938.0 1.396 143.7
1948.0 1.430 146.7
1958.0 1.463 149.5
1968.0 1.494 152.2
1978.0 1.520 154.8
1988.0 1.541 157.3
1998.0 1.553 159.8
2008.0 1.554 162.2
2018.0 1.539 164.7
2028.0 1.503 167.3
2038.0 1.436 170.0
2048.0 1.324 173.1
2058.0 1.143 177.0
2068.0 0.858 182.9
2078.0 0.450 197.8
2088.0 0.223 297.4
2098.0 0.654 340.7
2108.0 1.076 349.0
2118.0 1.429 352.8
2128.0 1.725 355.2
2138.0 1.976 357.0
2148.0 2.190 358.3
2158.0 2.376 359.5
2168.0 2.538 0.4
2178.0 2.680 1.3
2188.0 2.806 2.1
2198.0 2.916 2.8
2208.0 3.014 3.5
2218.0 3.101 4.1
2228.0 3.178 4.7
2238.0 3.246 5.3
2248.0 3.305 5.8
2258.0 3.358 6.4
2268.0 3.403 6.9
2278.0 3.442 7.4
2288.0 3.476 7.9
2298.0 3.504 8.4
2308.0 3.527 8.9
2318.0 3.546 9.3
2328.0 3.560 9.8
2338.0 3.570 10.3
2348.0 3.576 10.7
2358.0 3.578 11.2
2368.0 3.577 11.7
2378.0 3.573 12.1
2388.0 3.566 12.6
2398.0 3.556 13.0
2408.0 3.543 13.5
2418.0 3.527 14.0
2428.0 3.509 14.5
2438.0 3.488 14.9
2448.0 3.465 15.4
2458.0 3.439 15.9
2468.0 3.412 16.4
2478.0 3.382 17.0
2488.0 3.351 17.5
2498.0 3.317 18.0
2508.0 3.282 18.5
2518.0 3.245 19.1
2528.0 3.206 19.7
2538.0 3.166 20.3
2548.0 3.124 20.9
2558.0 3.081 21.5
2568.0 3.036 22.1
2578.0 2.990 22.8
2588.0 2.943 23.4
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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