Double Star Calculator - Orbit

Orbital Elements for STF1728AB
WDS: STF1728AB WDS ID/Discoverer
P: 25.852 Orbital period (years)
a: 0.67144 Semi-major axis (arcseconds)
i: 90.0501 Inclination (degrees)
Ω: 12.2272 Longitude of ascending node (degrees)
T: 2015.094 Epoch of periastron passage (year)
e: 0.5106 Eccentricity
ω: 280.563 Longitude of periastron (degrees)
Start-Year: 2012.0737827782302 Year
End-Year: 2037.9262172217698 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1728AB
Position: 130959.28+173146.0 Epoch-2000 right ascension and declination
WDS-ID: 13100+1732 WDS designation
Discoverer Code: STF1728AB Discover designation and components
ADS number: 8804 Aitken Double Star catalog
HD number: 114378 HD catalog number
Hipparcos number: 64241 Hipparcos catalog number
V1: 4.85 Magnitude of the primary
V2: 5.53 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2015 Date of last observation
Orbit grade: 1 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Mut2015 Reference

Double Star Orbit for STF1728AB



WDS 6th Orbit including measures of STF1728AB

-- 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 STF1728AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.044   193.36
--------------------------
2012.07    0.551   192.23
2012.17    0.541   192.23
2012.27    0.531   192.22
2012.37    0.520   192.22
2012.47    0.509   192.22
2012.57    0.497   192.22
2012.67    0.484   192.22
2012.77    0.470   192.22
2012.87    0.456   192.21
2012.97    0.441   192.21
2013.07    0.425   192.21
2013.17    0.408   192.21
2013.27    0.391   192.20
2013.37    0.372   192.20
2013.47    0.353   192.20
2013.57    0.333   192.19
2013.67    0.312   192.19
2013.77    0.290   192.18
2013.87    0.267   192.18
2013.97    0.244   192.17
2014.07    0.219   192.16
2014.17    0.194   192.15
2014.27    0.168   192.13
2014.37    0.142   192.11
2014.47    0.115   192.09
2014.57    0.087   192.04
2014.67    0.059   191.95
2014.77    0.031   191.69
2014.87    0.002   184.69
2014.97    0.026    12.85
2015.07    0.055    12.52
2015.17    0.083    12.42
2015.27    0.110    12.37
2015.37    0.138    12.34
2015.47    0.164    12.32
2015.57    0.190    12.30
2015.67    0.214    12.29
2015.77    0.238    12.28
2015.87    0.261    12.27
2015.97    0.283    12.27
2016.07    0.303    12.26
2016.17    0.323    12.26
2016.27    0.341    12.25
2016.37    0.359    12.25
2016.47    0.375    12.24
2016.57    0.390    12.24
2016.67    0.404    12.24
2016.77    0.417    12.24
2016.87    0.430    12.23
2016.97    0.441    12.23
2017.07    0.451    12.23
2017.17    0.460    12.23
2017.27    0.469    12.22
2017.37    0.477    12.22
2017.47    0.483    12.22
2017.57    0.490    12.22
2017.67    0.495    12.22
2017.77    0.500    12.21
2017.87    0.504    12.21
2017.97    0.508    12.21
2018.07    0.511    12.21
2018.17    0.513    12.21
2018.27    0.515    12.20
2018.37    0.516    12.20
2018.47    0.517    12.20
2018.57    0.518    12.20
2018.67    0.518    12.20
2018.77    0.517    12.20
2018.87    0.517    12.19
2018.97    0.515    12.19
2019.07    0.514    12.19
2019.17    0.512    12.19
2019.27    0.510    12.19
2019.37    0.507    12.18
2019.47    0.504    12.18
2019.57    0.501    12.18
2019.67    0.497    12.18
2019.77    0.494    12.18
2019.87    0.490    12.18
2019.97    0.485    12.17
2020.07    0.481    12.17
2020.17    0.476    12.17
2020.27    0.471    12.17
2020.37    0.466    12.16
2020.47    0.461    12.16
2020.57    0.455    12.16
2020.67    0.449    12.16
2020.77    0.444    12.16
2020.87    0.437    12.15
2020.97    0.431    12.15
2021.07    0.425    12.15
2021.17    0.418    12.15
2021.27    0.412    12.14
2021.37    0.405    12.14
2021.47    0.398    12.14
2021.57    0.391    12.13
2021.67    0.383    12.13
2021.77    0.376    12.13
2021.87    0.368    12.12
2021.97    0.361    12.12
2022.07    0.353    12.12
2022.17    0.345    12.11
2022.27    0.337    12.11
2022.37    0.329    12.10
2022.47    0.321    12.10
2022.57    0.313    12.10
2022.67    0.305    12.09
2022.77    0.297    12.09
2022.87    0.288    12.08
2022.97    0.280    12.07
2023.07    0.271    12.07
2023.17    0.263    12.06
2023.27    0.254    12.05
2023.37    0.245    12.05
2023.47    0.236    12.04
2023.57    0.228    12.03
2023.67    0.219    12.02
2023.77    0.210    12.01
2023.87    0.201    12.00
2023.97    0.192    11.99
2024.07    0.183    11.97
2024.17    0.174    11.96
2024.27    0.164    11.94
2024.37    0.155    11.92
2024.47    0.146    11.90
2024.57    0.137    11.88
2024.67    0.127    11.85
2024.77    0.118    11.82
2024.87    0.109    11.78
2024.97    0.099    11.74
2025.07    0.090    11.69
2025.17    0.081    11.62
2025.27    0.071    11.54
2025.37    0.062    11.43
2025.47    0.053    11.29
2025.57    0.043    11.08
2025.67    0.034    10.76
2025.77    0.024    10.18
2025.87    0.015     8.86
2025.97    0.005     2.92
2026.07    0.004   204.13
2026.17    0.014   195.91
2026.27    0.023   194.40
2026.37    0.032   193.77
2026.47    0.042   193.43
2026.57    0.051   193.21
2026.67    0.061   193.06
2026.77    0.070   192.94
2026.87    0.080   192.86
2026.97    0.089   192.79
2027.07    0.098   192.74
2027.17    0.108   192.69
2027.27    0.117   192.66
2027.37    0.126   192.63
2027.47    0.136   192.60
2027.57    0.145   192.57
2027.67    0.154   192.55
2027.77    0.163   192.53
2027.87    0.173   192.52
2027.97    0.182   192.50
2028.07    0.191   192.49
2028.17    0.200   192.48
2028.27    0.209   192.47
2028.37    0.218   192.45
2028.47    0.227   192.45
2028.57    0.236   192.44
2028.67    0.245   192.43
2028.77    0.254   192.42
2028.87    0.263   192.41
2028.97    0.271   192.41
2029.07    0.280   192.40
2029.17    0.289   192.39
2029.27    0.297   192.39
2029.37    0.306   192.38
2029.47    0.315   192.38
2029.57    0.323   192.37
2029.67    0.331   192.37
2029.77    0.340   192.37
2029.87    0.348   192.36
2029.97    0.356   192.36
2030.07    0.364   192.35
2030.17    0.373   192.35
2030.27    0.381   192.35
2030.37    0.389   192.34
2030.47    0.396   192.34
2030.57    0.404   192.34
2030.67    0.412   192.34
2030.77    0.420   192.33
2030.87    0.427   192.33
2030.97    0.435   192.33
2031.07    0.442   192.33
2031.17    0.450   192.32
2031.27    0.457   192.32
2031.37    0.464   192.32
2031.47    0.471   192.32
2031.57    0.478   192.31
2031.67    0.485   192.31
2031.77    0.492   192.31
2031.87    0.498   192.31
2031.97    0.505   192.31
2032.07    0.511   192.30
2032.17    0.518   192.30
2032.27    0.524   192.30
2032.37    0.530   192.30
2032.47    0.536   192.30
2032.57    0.542   192.30
2032.67    0.548   192.29
2032.77    0.553   192.29
2032.87    0.559   192.29
2032.97    0.564   192.29
2033.07    0.569   192.29
2033.17    0.574   192.29
2033.27    0.579   192.29
2033.37    0.584   192.28
2033.47    0.589   192.28
2033.57    0.593   192.28
2033.67    0.598   192.28
2033.77    0.602   192.28
2033.87    0.606   192.28
2033.97    0.610   192.28
2034.07    0.613   192.27
2034.17    0.617   192.27
2034.27    0.620   192.27
2034.37    0.623   192.27
2034.47    0.626   192.27
2034.57    0.629   192.27
2034.67    0.631   192.27
2034.77    0.634   192.27
2034.87    0.636   192.27
2034.97    0.637   192.26
2035.07    0.639   192.26
2035.17    0.640   192.26
2035.27    0.642   192.26
2035.37    0.642   192.26
2035.47    0.643   192.26
2035.57    0.643   192.26
2035.67    0.644   192.26
2035.77    0.643   192.25
2035.87    0.643   192.25
2035.97    0.642   192.25
2036.07    0.641   192.25
2036.17    0.640   192.25
2036.27    0.638   192.25
2036.37    0.636   192.25
2036.47    0.633   192.25
2036.57    0.631   192.25
2036.67    0.628   192.24
2036.77    0.624   192.24
2036.87    0.620   192.24
2036.97    0.616   192.24
2037.07    0.611   192.24
2037.17    0.606   192.24
2037.27    0.600   192.24
2037.37    0.594   192.24
2037.47    0.587   192.23
2037.57    0.580   192.23
2037.67    0.573   192.23
2037.77    0.565   192.23
2037.87    0.556   192.23






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 16:53:06



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