Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:35:40

Orbital Elements for STF1998AC
WDS: STF1998AC WDS ID/Discoverer
P: 1514.430 Orbital period (years)
a: 7.755 Semi-major axis (arcseconds)
i: 131.5 Inclination (degrees)
Ω: 47.4 Longitude of ascending node (degrees)
T: 2226.100 Epoch of periastron passage (year)
e: 0.041 Eccentricity
ω: 59.3 Longitude of periastron (degrees)
Start-Year: 1268.0 Year
End-Year: 2782.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1998AC
Position: 160422.13-112223.2 Epoch-2000 right ascension and declination
WDS-ID: 16044-1122 WDS designation
Discoverer Code: STF1998AC Discover designation and components
ADS number: 9909 Aitken Double Star catalog
HD number: 144069J HD catalog number
Hipparcos number: 78727 Hipparcos catalog number
V1: 5.16 Magnitude of the primary
V2: 7.30 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2005 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1998AC



WDS 6th Orbit including measures of STF1998AC

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of STF1998AC
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     7.509     42.2
-------------------------
1268.0     7.826    217.4
1278.0     7.788    215.8
1288.0     7.742    214.3
1298.0     7.691    212.7
1308.0     7.633    211.1
1318.0     7.570    209.4
1328.0     7.501    207.8
1338.0     7.427    206.1
1348.0     7.348    204.3
1358.0     7.265    202.6
1368.0     7.178    200.7
1378.0     7.087    198.9
1388.0     6.992    197.0
1398.0     6.895    195.0
1408.0     6.796    193.0
1418.0     6.695    190.9
1428.0     6.593    188.8
1438.0     6.490    186.6
1448.0     6.387    184.3
1458.0     6.285    181.9
1468.0     6.185    179.5
1478.0     6.086    177.0
1488.0     5.991    174.4
1498.0     5.899    171.7
1508.0     5.811    168.9
1518.0     5.728    166.1
1528.0     5.651    163.2
1538.0     5.581    160.2
1548.0     5.517    157.1
1558.0     5.462    153.9
1568.0     5.415    150.7
1578.0     5.376    147.5
1588.0     5.347    144.2
1598.0     5.327    140.9
1608.0     5.318    137.5
1618.0     5.318    134.2
1628.0     5.328    130.8
1638.0     5.347    127.5
1648.0     5.376    124.2
1658.0     5.415    121.0
1668.0     5.462    117.8
1678.0     5.517    114.6
1688.0     5.579    111.6
1698.0     5.648    108.5
1708.0     5.724    105.6
1718.0     5.805    102.8
1728.0     5.890    100.0
1738.0     5.979     97.3
1748.0     6.071     94.7
1758.0     6.166     92.2
1768.0     6.262     89.7
1778.0     6.359     87.4
1788.0     6.456     85.0
1798.0     6.552     82.8
1808.0     6.647     80.6
1818.0     6.741     78.5
1828.0     6.831     76.5
1838.0     6.919     74.5
1848.0     7.003     72.5
1858.0     7.083     70.6
1868.0     7.159     68.7
1878.0     7.230     66.9
1888.0     7.295     65.1
1898.0     7.355     63.4
1908.0     7.408     61.6
1918.0     7.456     59.9
1928.0     7.496     58.2
1938.0     7.530     56.5
1948.0     7.556     54.9
1958.0     7.576     53.2
1968.0     7.587     51.6
1978.0     7.592     49.9
1988.0     7.588     48.3
1998.0     7.577     46.6
2008.0     7.558     45.0
2018.0     7.532     43.3
2028.0     7.498     41.6
2038.0     7.456     40.0
2048.0     7.407     38.2
2058.0     7.351     36.5
2068.0     7.288     34.7
2078.0     7.218     32.9
2088.0     7.141     31.1
2098.0     7.059     29.2
2108.0     6.970     27.3
2118.0     6.876     25.3
2128.0     6.778     23.3
2138.0     6.675     21.2
2148.0     6.568     19.0
2158.0     6.459     16.8
2168.0     6.347     14.5
2178.0     6.233     12.1
2188.0     6.118      9.6
2198.0     6.004      7.1
2208.0     5.890      4.4
2218.0     5.778      1.6
2228.0     5.669    358.7
2238.0     5.564    355.7
2248.0     5.464    352.6
2258.0     5.370    349.4
2268.0     5.283    346.0
2278.0     5.205    342.6
2288.0     5.135    339.0
2298.0     5.076    335.4
2308.0     5.028    331.7
2318.0     4.991    327.9
2328.0     4.967    324.1
2338.0     4.956    320.3
2348.0     4.957    316.4
2358.0     4.971    312.6
2368.0     4.998    308.8
2378.0     5.037    305.0
2388.0     5.088    301.3
2398.0     5.150    297.7
2408.0     5.223    294.2
2418.0     5.304    290.7
2428.0     5.394    287.4
2438.0     5.492    284.2
2448.0     5.595    281.2
2458.0     5.704    278.2
2468.0     5.817    275.3
2478.0     5.933    272.6
2488.0     6.052    270.0
2498.0     6.171    267.4
2508.0     6.292    265.0
2518.0     6.412    262.6
2528.0     6.530    260.4
2538.0     6.647    258.2
2548.0     6.762    256.1
2558.0     6.873    254.1
2568.0     6.981    252.1
2578.0     7.084    250.2
2588.0     7.183    248.3
2598.0     7.277    246.5
2608.0     7.366    244.7
2618.0     7.448    243.0
2628.0     7.525    241.3
2638.0     7.595    239.7
2648.0     7.659    238.0
2658.0     7.716    236.4
2668.0     7.766    234.9
2678.0     7.809    233.3
2688.0     7.845    231.8
2698.0     7.874    230.2
2708.0     7.895    228.7
2718.0     7.909    227.2
2728.0     7.916    225.7
2738.0     7.915    224.2
2748.0     7.907    222.7
2758.0     7.892    221.1
2768.0     7.870    219.6
2778.0     7.841    218.1






Disclaimer
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.


Acknowledgements
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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