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Double Star Calculator - Orbital Elements
- Revision:
$Rev: 1216 $
- Report created:
2025-07-11 17:38:03
WDS:
STF1187AB
WDS ID/Discoverer
P:
1385.156
Orbital period (years)
a:
3.0464
Semi-major axis (arcseconds)
i:
127.8
Inclination (degrees)
Ω:
17.6
Longitude of ascending node (degrees)
T:
3132.316
Epoch of periastron passage (year)
e:
0.2414
Eccentricity
ω:
258.1
Longitude of periastron (degrees)
Start-Year:
1333.0
Year
End-Year:
2717.0
Year
Epoch:
2025.0
Besselian Epoch
Position:
080930.45+321318.8
Epoch-2000 right ascension and declination
WDS-ID:
08095+3213
WDS designation
Discoverer Code:
STF1187AB
Discover designation and components
ADS number:
6623
Aitken Double Star catalog
HD number:
67501
HD catalog number
Hipparcos number:
39948
Hipparcos catalog number
V1:
7.19
Magnitude of the primary
V2:
7.98
Magnitude of the secondary
Equinox:
Equinox
Date:
1997
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 2.994 18.7
-------------------------
1333.0 2.645 236.7
1343.0 2.671 234.7
1353.0 2.696 232.7
1363.0 2.721 230.8
1373.0 2.744 228.8
1383.0 2.765 227.0
1393.0 2.785 225.1
1403.0 2.804 223.3
1413.0 2.820 221.4
1423.0 2.834 219.6
1433.0 2.845 217.9
1443.0 2.854 216.1
1453.0 2.859 214.3
1463.0 2.862 212.6
1473.0 2.861 210.8
1483.0 2.856 209.1
1493.0 2.848 207.3
1503.0 2.835 205.5
1513.0 2.819 203.7
1523.0 2.798 201.9
1533.0 2.773 200.1
1543.0 2.743 198.2
1553.0 2.709 196.3
1563.0 2.669 194.3
1573.0 2.625 192.2
1583.0 2.576 190.1
1593.0 2.523 187.9
1603.0 2.464 185.6
1613.0 2.402 183.2
1623.0 2.335 180.6
1633.0 2.264 177.9
1643.0 2.190 175.0
1653.0 2.114 171.9
1663.0 2.035 168.6
1673.0 1.955 165.0
1683.0 1.875 161.1
1693.0 1.796 156.8
1703.0 1.721 152.2
1713.0 1.649 147.1
1723.0 1.584 141.6
1733.0 1.528 135.7
1743.0 1.481 129.3
1753.0 1.447 122.6
1763.0 1.427 115.7
1773.0 1.422 108.6
1783.0 1.432 101.5
1793.0 1.456 94.6
1803.0 1.494 88.0
1813.0 1.545 81.8
1823.0 1.605 76.0
1833.0 1.674 70.7
1843.0 1.749 65.8
1853.0 1.828 61.3
1863.0 1.911 57.2
1873.0 1.995 53.4
1883.0 2.080 50.0
1893.0 2.165 46.8
1903.0 2.248 43.8
1913.0 2.329 41.1
1923.0 2.407 38.5
1933.0 2.482 36.1
1943.0 2.554 33.9
1953.0 2.622 31.7
1963.0 2.687 29.7
1973.0 2.747 27.7
1983.0 2.804 25.9
1993.0 2.856 24.1
2003.0 2.904 22.4
2013.0 2.947 20.7
2023.0 2.987 19.0
2033.0 3.022 17.5
2043.0 3.053 15.9
2053.0 3.081 14.4
2063.0 3.104 12.9
2073.0 3.123 11.4
2083.0 3.139 9.9
2093.0 3.151 8.5
2103.0 3.160 7.0
2113.0 3.165 5.6
2123.0 3.167 4.2
2133.0 3.166 2.7
2143.0 3.161 1.3
2153.0 3.154 359.9
2163.0 3.145 358.4
2173.0 3.132 357.0
2183.0 3.117 355.5
2193.0 3.100 354.0
2203.0 3.081 352.5
2213.0 3.060 351.0
2223.0 3.037 349.5
2233.0 3.012 347.9
2243.0 2.986 346.3
2253.0 2.958 344.7
2263.0 2.929 343.0
2273.0 2.899 341.3
2283.0 2.868 339.6
2293.0 2.837 337.8
2303.0 2.804 336.0
2313.0 2.772 334.2
2323.0 2.739 332.3
2333.0 2.706 330.4
2343.0 2.673 328.4
2353.0 2.641 326.3
2363.0 2.609 324.3
2373.0 2.577 322.1
2383.0 2.547 319.9
2393.0 2.517 317.7
2403.0 2.489 315.4
2413.0 2.462 313.1
2423.0 2.437 310.7
2433.0 2.413 308.2
2443.0 2.392 305.8
2453.0 2.372 303.2
2463.0 2.354 300.7
2473.0 2.339 298.1
2483.0 2.326 295.4
2493.0 2.315 292.7
2503.0 2.307 290.1
2513.0 2.302 287.4
2523.0 2.299 284.7
2533.0 2.299 281.9
2543.0 2.301 279.2
2553.0 2.306 276.5
2563.0 2.314 273.8
2573.0 2.324 271.2
2583.0 2.336 268.5
2593.0 2.350 265.9
2603.0 2.367 263.3
2613.0 2.385 260.8
2623.0 2.405 258.3
2633.0 2.427 255.8
2643.0 2.450 253.4
2653.0 2.474 251.0
2663.0 2.499 248.7
2673.0 2.525 246.4
2683.0 2.551 244.2
2693.0 2.578 242.0
2703.0 2.605 239.9
2713.0 2.631 237.8
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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