Double Star Calculator - Orbit

Orbital Elements for STA3
WDS: STA3 WDS ID/Discoverer
P: 27.890 Orbital period (years)
a: 0.0728 Semi-major axis (arcseconds)
i: 127.0 Inclination (degrees)
Ω: 342.3 Longitude of ascending node (degrees)
T: 2024.760 Epoch of periastron passage (year)
e: 0.781 Eccentricity
ω: 98.2 Longitude of periastron (degrees)
Start-Year: 2011.055 Year
End-Year: 2038.945 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STA3
Position: 190718.13+360600.6 Epoch-2000 right ascension and declination
WDS-ID: 19073+3606 WDS designation
Discoverer Code: STA3 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 178475 HD catalog number
Hipparcos number: 93903 Hipparcos catalog number
V1: 5.28 Magnitude of the primary
V2: 6.4 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 3 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Hor2024 Reference

Double Star Orbit for STA3



WDS 6th Orbit including measures of STA3

-- 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 STA3
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.040   137.42
--------------------------
2011.06    0.080    57.86
2011.15    0.080    57.45
2011.25    0.080    57.05
2011.35    0.080    56.64
2011.45    0.080    56.24
2011.55    0.080    55.84
2011.65    0.080    55.44
2011.75    0.080    55.04
2011.85    0.080    54.63
2011.95    0.080    54.23
2012.05    0.080    53.83
2012.15    0.080    53.44
2012.25    0.080    53.04
2012.35    0.080    52.64
2012.45    0.080    52.24
2012.55    0.080    51.84
2012.65    0.080    51.44
2012.75    0.080    51.05
2012.85    0.080    50.65
2012.95    0.080    50.25
2013.05    0.080    49.85
2013.15    0.080    49.46
2013.25    0.080    49.06
2013.35    0.080    48.66
2013.45    0.080    48.27
2013.55    0.080    47.87
2013.65    0.080    47.47
2013.75    0.080    47.08
2013.85    0.080    46.68
2013.95    0.080    46.28
2014.05    0.080    45.88
2014.15    0.080    45.48
2014.25    0.080    45.09
2014.35    0.080    44.69
2014.45    0.080    44.29
2014.55    0.080    43.89
2014.65    0.080    43.49
2014.75    0.080    43.09
2014.85    0.080    42.68
2014.95    0.080    42.28
2015.05    0.080    41.88
2015.15    0.080    41.48
2015.25    0.080    41.07
2015.35    0.080    40.67
2015.45    0.079    40.26
2015.55    0.079    39.85
2015.65    0.079    39.44
2015.75    0.079    39.03
2015.85    0.079    38.62
2015.95    0.079    38.21
2016.05    0.079    37.80
2016.15    0.079    37.38
2016.25    0.079    36.97
2016.35    0.078    36.55
2016.45    0.078    36.13
2016.55    0.078    35.71
2016.65    0.078    35.29
2016.75    0.078    34.86
2016.85    0.078    34.44
2016.95    0.077    34.01
2017.05    0.077    33.58
2017.15    0.077    33.15
2017.25    0.077    32.71
2017.35    0.077    32.28
2017.45    0.076    31.84
2017.55    0.076    31.40
2017.65    0.076    30.95
2017.75    0.076    30.51
2017.85    0.076    30.06
2017.95    0.075    29.60
2018.05    0.075    29.15
2018.15    0.075    28.69
2018.25    0.074    28.23
2018.35    0.074    27.76
2018.45    0.074    27.29
2018.55    0.074    26.82
2018.65    0.073    26.34
2018.75    0.073    25.86
2018.85    0.073    25.38
2018.95    0.072    24.89
2019.05    0.072    24.39
2019.15    0.072    23.89
2019.25    0.071    23.39
2019.35    0.071    22.88
2019.45    0.070    22.36
2019.55    0.070    21.84
2019.65    0.070    21.32
2019.75    0.069    20.78
2019.85    0.069    20.24
2019.95    0.068    19.69
2020.05    0.068    19.14
2020.15    0.067    18.58
2020.25    0.067    18.00
2020.35    0.066    17.42
2020.45    0.066    16.84
2020.55    0.065    16.24
2020.65    0.065    15.63
2020.75    0.064    15.01
2020.85    0.064    14.38
2020.95    0.063    13.74
2021.05    0.062    13.08
2021.15    0.062    12.41
2021.25    0.061    11.73
2021.35    0.060    11.03
2021.45    0.060    10.31
2021.55    0.059     9.58
2021.65    0.058     8.82
2021.75    0.057     8.05
2021.85    0.056     7.25
2021.95    0.056     6.44
2022.05    0.055     5.59
2022.15    0.054     4.72
2022.25    0.053     3.81
2022.35    0.052     2.87
2022.45    0.051     1.90
2022.55    0.050     0.88
2022.65    0.049   359.82
2022.75    0.047   358.70
2022.85    0.046   357.53
2022.95    0.045   356.29
2023.05    0.044   354.98
2023.15    0.042   353.59
2023.25    0.041   352.09
2023.35    0.039   350.48
2023.45    0.038   348.74
2023.55    0.036   346.82
2023.65    0.034   344.71
2023.75    0.032   342.34
2023.85    0.030   339.66
2023.95    0.028   336.55
2024.05    0.025   332.88
2024.15    0.023   328.40
2024.25    0.020   322.75
2024.35    0.017   315.28
2024.45    0.014   304.85
2024.55    0.012   289.57
2024.65    0.010   267.38
2024.75    0.010   240.19
2024.85    0.011   215.82
2024.95    0.013   198.39
2025.05    0.016   186.46
2025.15    0.019   177.94
2025.25    0.021   171.49
2025.35    0.024   166.35
2025.45    0.026   162.10
2025.55    0.028   158.47
2025.65    0.029   155.30
2025.75    0.031   152.48
2025.85    0.033   149.93
2025.95    0.034   147.60
2026.05    0.035   145.45
2026.15    0.036   143.45
2026.25    0.038   141.58
2026.35    0.039   139.81
2026.45    0.040   138.14
2026.55    0.041   136.56
2026.65    0.042   135.05
2026.75    0.043   133.60
2026.85    0.043   132.21
2026.95    0.044   130.87
2027.05    0.045   129.58
2027.15    0.046   128.34
2027.25    0.047   127.13
2027.35    0.047   125.97
2027.45    0.048   124.83
2027.55    0.049   123.73
2027.65    0.049   122.65
2027.75    0.050   121.61
2027.85    0.050   120.59
2027.95    0.051   119.59
2028.05    0.052   118.61
2028.15    0.052   117.66
2028.25    0.053   116.73
2028.35    0.053   115.81
2028.45    0.054   114.91
2028.55    0.054   114.03
2028.65    0.055   113.17
2028.75    0.055   112.32
2028.85    0.056   111.48
2028.95    0.056   110.66
2029.05    0.057   109.86
2029.15    0.057   109.06
2029.25    0.058   108.28
2029.35    0.058   107.51
2029.45    0.058   106.75
2029.55    0.059   106.00
2029.65    0.059   105.26
2029.75    0.060   104.54
2029.85    0.060   103.82
2029.95    0.060   103.11
2030.05    0.061   102.41
2030.15    0.061   101.72
2030.25    0.062   101.03
2030.35    0.062   100.36
2030.45    0.062    99.69
2030.55    0.063    99.03
2030.65    0.063    98.38
2030.75    0.063    97.73
2030.85    0.064    97.09
2030.95    0.064    96.46
2031.05    0.064    95.84
2031.15    0.065    95.22
2031.25    0.065    94.60
2031.35    0.065    94.00
2031.45    0.066    93.39
2031.55    0.066    92.80
2031.65    0.066    92.21
2031.75    0.066    91.62
2031.85    0.067    91.04
2031.95    0.067    90.47
2032.05    0.067    89.90
2032.15    0.068    89.33
2032.25    0.068    88.77
2032.35    0.068    88.22
2032.45    0.068    87.67
2032.55    0.069    87.12
2032.65    0.069    86.58
2032.75    0.069    86.04
2032.85    0.069    85.50
2032.95    0.070    84.97
2033.05    0.070    84.45
2033.15    0.070    83.92
2033.25    0.070    83.40
2033.35    0.071    82.89
2033.45    0.071    82.38
2033.55    0.071    81.87
2033.65    0.071    81.36
2033.75    0.072    80.86
2033.85    0.072    80.36
2033.95    0.072    79.86
2034.05    0.072    79.37
2034.15    0.073    78.88
2034.25    0.073    78.39
2034.35    0.073    77.91
2034.45    0.073    77.43
2034.55    0.073    76.95
2034.65    0.074    76.47
2034.75    0.074    76.00
2034.85    0.074    75.53
2034.95    0.074    75.06
2035.05    0.074    74.59
2035.15    0.075    74.13
2035.25    0.075    73.67
2035.35    0.075    73.21
2035.45    0.075    72.75
2035.55    0.075    72.30
2035.65    0.075    71.85
2035.75    0.076    71.39
2035.85    0.076    70.95
2035.95    0.076    70.50
2036.05    0.076    70.05
2036.15    0.076    69.61
2036.25    0.076    69.17
2036.35    0.077    68.73
2036.45    0.077    68.30
2036.55    0.077    67.86
2036.65    0.077    67.43
2036.75    0.077    66.99
2036.85    0.077    66.56
2036.95    0.077    66.13
2037.05    0.078    65.71
2037.15    0.078    65.28
2037.25    0.078    64.86
2037.35    0.078    64.43
2037.45    0.078    64.01
2037.55    0.078    63.59
2037.65    0.078    63.17
2037.75    0.078    62.75
2037.85    0.079    62.33
2037.95    0.079    61.92
2038.05    0.079    61.50
2038.15    0.079    61.09
2038.25    0.079    60.68
2038.35    0.079    60.27
2038.45    0.079    59.86
2038.55    0.079    59.45
2038.65    0.079    59.04
2038.75    0.079    58.63
2038.85    0.080    58.22






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 18:00:19



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