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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 17:32:17

Orbital Elements for STT520
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

Further data from the WDS Sixth Catalog of Orbits for STT520
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

Double Star Orbit for STT520



WDS 6th Orbit including measures of STT520

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


Ephemeris of STT520
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






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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