Double Star Calculator - Orbit

Orbital Elements for STT303AB
WDS: STT303AB WDS ID/Discoverer
P: 1114.471 Orbital period (years)
a: 4.42487 Semi-major axis (arcseconds)
i: 84.442 Inclination (degrees)
Ω: 3.152 Longitude of ascending node (degrees)
T: 2092.143 Epoch of periastron passage (year)
e: 0.81413 Eccentricity
ω: 249.681 Longitude of periastron (degrees)
Start-Year: 1467.76465 Year
End-Year: 2582.23535 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STT303AB
Position: 160054.16+131618.2 Epoch-2000 right ascension and declination
WDS-ID: 16009+1316 WDS designation
Discoverer Code: STT303AB Discover designation and components
ADS number: 9880 Aitken Double Star catalog
HD number: 143597 HD catalog number
Hipparcos number: 78446 Hipparcos catalog number
V1: 7.69 Magnitude of the primary
V2: 8.06 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 4 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for STT303AB



WDS 6th Orbit including measures of STT303AB

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


Legend:
Green plus signs:Visual (micrometric) measures
Violet asterisks:Photographic measures
Blue symbols:Various interferometric techniques
Dot-dash line:Indicates the line of nodes

Ephemeris of STT303AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.610   175.33
--------------------------
1467.76    3.330    15.33
1477.76    3.267    15.66
1487.76    3.203    16.00
1497.76    3.138    16.35
1507.76    3.071    16.72
1517.76    3.002    17.11
1527.76    2.932    17.51
1537.76    2.861    17.93
1547.76    2.788    18.38
1557.76    2.714    18.85
1567.76    2.638    19.35
1577.76    2.562    19.87
1587.76    2.484    20.43
1597.76    2.405    21.03
1607.76    2.325    21.66
1617.76    2.244    22.34
1627.76    2.163    23.08
1637.76    2.080    23.87
1647.76    1.997    24.72
1657.76    1.913    25.66
1667.76    1.828    26.67
1677.76    1.743    27.79
1687.76    1.658    29.02
1697.76    1.572    30.39
1707.76    1.486    31.91
1717.76    1.401    33.62
1727.76    1.316    35.55
1737.76    1.232    37.74
1747.76    1.149    40.25
1757.76    1.068    43.15
1767.76    0.989    46.52
1777.76    0.913    50.46
1787.76    0.842    55.09
1797.76    0.777    60.54
1807.76    0.719    66.93
1817.76    0.670    74.33
1827.76    0.634    82.73
1837.76    0.613    91.92
1847.76    0.607   101.53
1857.76    0.618   111.06
1867.76    0.644   120.04
1877.76    0.684   128.14
1887.76    0.735   135.24
1897.76    0.794   141.35
1907.76    0.860   146.56
1917.76    0.930   151.01
1927.76    1.004   154.82
1937.76    1.079   158.10
1947.76    1.154   160.96
1957.76    1.229   163.47
1967.76    1.302   165.69
1977.76    1.372   167.68
1987.76    1.437   169.48
1997.76    1.497   171.14
2007.76    1.548   172.67
2017.76    1.588   174.12
2027.76    1.612   175.50
2037.76    1.616   176.86
2047.76    1.589   178.24
2057.76    1.516   179.71
2067.76    1.368   181.41
2077.76    1.090   183.74
2087.76    0.591   188.98
2097.76    0.160   331.73
2107.76    0.834   357.99
2117.76    1.380     1.02
2127.76    1.809     2.43
2137.76    2.155     3.34
2147.76    2.442     4.01
2157.76    2.685     4.55
2167.76    2.892     5.01
2177.76    3.071     5.41
2187.76    3.227     5.77
2197.76    3.364     6.10
2207.76    3.483     6.40
2217.76    3.588     6.68
2227.76    3.681     6.95
2237.76    3.761     7.21
2247.76    3.832     7.46
2257.76    3.893     7.69
2267.76    3.946     7.93
2277.76    3.991     8.15
2287.76    4.030     8.37
2297.76    4.061     8.59
2307.76    4.087     8.80
2317.76    4.106     9.02
2327.76    4.121     9.23
2337.76    4.130     9.44
2347.76    4.135     9.64
2357.76    4.136     9.85
2367.76    4.132    10.06
2377.76    4.124    10.27
2387.76    4.113    10.48
2397.76    4.097    10.69
2407.76    4.079    10.90
2417.76    4.057    11.12
2427.76    4.032    11.33
2437.76    4.004    11.55
2447.76    3.974    11.78
2457.76    3.940    12.01
2467.76    3.904    12.24
2477.76    3.865    12.47
2487.76    3.824    12.71
2497.76    3.781    12.96
2507.76    3.735    13.21
2517.76    3.687    13.47
2527.76    3.637    13.73
2537.76    3.585    14.01
2547.76    3.531    14.29
2557.76    3.475    14.58
2567.76    3.417    14.88
2577.76    3.357    15.19






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. Unless otherwise noted, all output generated by the Double Star Calculator including orbit diagrams, ephemerides, and analytical reports is licensed under CC BY 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.


Report Information
Double Star Calculator: Version 1.2 ($Rev: 2397 $)
Report created: 2026-06-25 17:21:34



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