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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:51:53

Orbital Elements for STT338AB
WDS: STT338AB WDS ID/Discoverer
P: 1276.600 Orbital period (years)
a: 1.14 Semi-major axis (arcseconds)
i: 124.2 Inclination (degrees)
Ω: 28.2 Longitude of ascending node (degrees)
T: 1799.900 Epoch of periastron passage (year)
e: 0.582 Eccentricity
ω: 111.1 Longitude of periastron (degrees)
Start-Year: 1387.0 Year
End-Year: 2663.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT338AB
Position: 175158.46+151934.9 Epoch-2000 right ascension and declination
WDS-ID: 17520+1520 WDS designation
Discoverer Code: STT338AB Discover designation and components
ADS number: 10850 Aitken Double Star catalog
HD number: 162734 HD catalog number
Hipparcos number: 87427 Hipparcos catalog number
V1: 7.21 Magnitude of the primary
V2: 7.38 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STT338AB



WDS 6th Orbit including measures of STT338AB

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


Ephemeris of STT338AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.832    161.7
-------------------------
1387.0     1.305     59.2
1397.0     1.306     58.2
1407.0     1.307     57.2
1417.0     1.307     56.2
1427.0     1.306     55.2
1437.0     1.304     54.3
1447.0     1.301     53.3
1457.0     1.298     52.3
1467.0     1.293     51.3
1477.0     1.288     50.3
1487.0     1.281     49.3
1497.0     1.273     48.2
1507.0     1.264     47.2
1517.0     1.254     46.1
1527.0     1.243     45.1
1537.0     1.230     44.0
1547.0     1.216     42.8
1557.0     1.200     41.7
1567.0     1.183     40.5
1577.0     1.164     39.3
1587.0     1.143     38.0
1597.0     1.120     36.7
1607.0     1.095     35.4
1617.0     1.068     33.9
1627.0     1.039     32.4
1637.0     1.007     30.8
1647.0     0.972     29.1
1657.0     0.935     27.3
1667.0     0.894     25.3
1677.0     0.851     23.1
1687.0     0.803     20.6
1697.0     0.753     17.9
1707.0     0.698     14.7
1717.0     0.640     10.9
1727.0     0.578      6.4
1737.0     0.514      0.8
1747.0     0.448    353.5
1757.0     0.384    343.7
1767.0     0.327    330.3
1777.0     0.287    312.2
1787.0     0.274    290.5
1797.0     0.293    269.2
1807.0     0.336    252.0
1817.0     0.390    239.2
1827.0     0.448    229.6
1837.0     0.503    222.2
1847.0     0.553    216.2
1857.0     0.598    211.1
1867.0     0.636    206.7
1877.0     0.669    202.8
1887.0     0.697    199.2
1897.0     0.720    195.9
1907.0     0.740    192.7
1917.0     0.757    189.7
1927.0     0.771    186.9
1937.0     0.783    184.1
1947.0     0.792    181.4
1957.0     0.800    178.7
1967.0     0.807    176.2
1977.0     0.813    173.6
1987.0     0.818    171.1
1997.0     0.822    168.6
2007.0     0.826    166.1
2017.0     0.829    163.7
2027.0     0.833    161.3
2037.0     0.835    158.9
2047.0     0.838    156.5
2057.0     0.841    154.1
2067.0     0.844    151.7
2077.0     0.847    149.4
2087.0     0.851    147.1
2097.0     0.854    144.8
2107.0     0.858    142.5
2117.0     0.862    140.2
2127.0     0.867    138.0
2137.0     0.872    135.7
2147.0     0.877    133.5
2157.0     0.882    131.4
2167.0     0.888    129.2
2177.0     0.895    127.1
2187.0     0.901    125.1
2197.0     0.908    123.0
2207.0     0.916    121.0
2217.0     0.924    119.0
2227.0     0.932    117.1
2237.0     0.940    115.2
2247.0     0.949    113.3
2257.0     0.958    111.4
2267.0     0.968    109.6
2277.0     0.977    107.9
2287.0     0.987    106.1
2297.0     0.997    104.4
2307.0     1.007    102.8
2317.0     1.018    101.1
2327.0     1.028     99.5
2337.0     1.039     98.0
2347.0     1.049     96.4
2357.0     1.060     94.9
2367.0     1.071     93.4
2377.0     1.082     92.0
2387.0     1.093     90.6
2397.0     1.103     89.2
2407.0     1.114     87.8
2417.0     1.125     86.5
2427.0     1.135     85.2
2437.0     1.146     83.9
2447.0     1.156     82.6
2457.0     1.166     81.4
2467.0     1.177     80.2
2477.0     1.186     79.0
2487.0     1.196     77.8
2497.0     1.205     76.6
2507.0     1.214     75.5
2517.0     1.223     74.3
2527.0     1.232     73.2
2537.0     1.240     72.1
2547.0     1.248     71.1
2557.0     1.255     70.0
2567.0     1.262     68.9
2577.0     1.269     67.9
2587.0     1.275     66.8
2597.0     1.281     65.8
2607.0     1.286     64.8
2617.0     1.291     63.8
2627.0     1.295     62.8
2637.0     1.299     61.8
2647.0     1.302     60.8
2657.0     1.304     59.8






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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