Double Star Calculator - Orbit

Orbital Elements for STT341AB

WDS:	STT341AB	WDS ID/Discoverer
P:	20.081	Orbital period (years)
a:	0.253	Semi-major axis (arcseconds)
i:	77.0	Inclination (degrees)
Ω:	270.8	Longitude of ascending node (degrees)
T:	1978.438	Epoch of periastron passage (year)
e:	0.956	Eccentricity
ω:	3.0	Longitude of periastron (degrees)
Start-Year:	2014.9595	Year
End-Year:	2035.0405	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT341AB
Position:	180549.72+212645.6	Epoch-2000 right ascension and declination
WDS-ID:	18058+2127	WDS designation
Discoverer Code:	STT341AB	Discover designation and components
ADS number:	11060	Aitken Double Star catalog
HD number:	165590	HD catalog number
Hipparcos number:	88637	Hipparcos catalog number
V1:	7.39	Magnitude of the primary
V2:	8.82	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1980	Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Hei1982b	Reference

Double Star Orbit for STT341AB

WDS 6th Orbit including measures of STT341AB

-- 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 STT341AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.481    90.80
--------------------------
2014.96    0.345    93.99
2015.06    0.340    94.06
2015.16    0.335    94.12
2015.26    0.329    94.19
2015.36    0.324    94.26
2015.46    0.318    94.34
2015.56    0.312    94.41
2015.66    0.306    94.49
2015.76    0.300    94.58
2015.86    0.293    94.66
2015.96    0.287    94.75
2016.06    0.280    94.85
2016.16    0.274    94.95
2016.26    0.267    95.05
2016.36    0.259    95.16
2016.46    0.252    95.27
2016.56    0.244    95.40
2016.66    0.237    95.53
2016.76    0.228    95.67
2016.86    0.220    95.82
2016.96    0.212    95.98
2017.06    0.203    96.16
2017.16    0.194    96.35
2017.26    0.184    96.56
2017.36    0.174    96.80
2017.46    0.164    97.07
2017.56    0.153    97.37
2017.66    0.142    97.71
2017.76    0.130    98.12
2017.86    0.118    98.61
2017.96    0.105    99.22
2018.06    0.091   100.02
2018.16    0.076   101.10
2018.26    0.060   102.76
2018.36    0.042   105.76
2018.46    0.021   114.11
2018.56    0.006   232.10
2018.66    0.006    25.37
2018.76    0.029    74.07
2018.86    0.050    79.20
2018.96    0.068    81.41
2019.06    0.085    82.71
2019.16    0.100    83.61
2019.26    0.114    84.27
2019.36    0.127    84.80
2019.46    0.139    85.23
2019.56    0.151    85.59
2019.66    0.162    85.89
2019.76    0.173    86.16
2019.86    0.183    86.40
2019.96    0.193    86.62
2020.06    0.203    86.81
2020.16    0.212    86.99
2020.26    0.221    87.15
2020.36    0.229    87.30
2020.46    0.237    87.44
2020.56    0.245    87.57
2020.66    0.253    87.69
2020.76    0.261    87.81
2020.86    0.268    87.91
2020.96    0.275    88.02
2021.06    0.282    88.11
2021.16    0.289    88.21
2021.26    0.295    88.30
2021.36    0.302    88.38
2021.46    0.308    88.46
2021.56    0.314    88.54
2021.66    0.320    88.62
2021.76    0.326    88.69
2021.86    0.332    88.76
2021.96    0.337    88.83
2022.06    0.342    88.89
2022.16    0.348    88.96
2022.26    0.353    89.02
2022.36    0.358    89.08
2022.46    0.363    89.14
2022.56    0.367    89.19
2022.66    0.372    89.25
2022.76    0.376    89.30
2022.86    0.381    89.35
2022.96    0.385    89.41
2023.06    0.389    89.46
2023.16    0.393    89.51
2023.26    0.397    89.55
2023.36    0.401    89.60
2023.46    0.405    89.65
2023.56    0.409    89.69
2023.66    0.412    89.74
2023.76    0.416    89.78
2023.86    0.419    89.83
2023.96    0.423    89.87
2024.06    0.426    89.91
2024.16    0.429    89.95
2024.26    0.432    89.99
2024.36    0.435    90.03
2024.46    0.438    90.07
2024.56    0.441    90.11
2024.66    0.444    90.15
2024.76    0.446    90.19
2024.86    0.449    90.23
2024.96    0.451    90.27
2025.06    0.454    90.30
2025.16    0.456    90.34
2025.26    0.458    90.38
2025.36    0.461    90.41
2025.46    0.463    90.45
2025.56    0.465    90.48
2025.66    0.467    90.52
2025.76    0.469    90.55
2025.86    0.470    90.59
2025.96    0.472    90.62
2026.06    0.474    90.65
2026.16    0.476    90.69
2026.26    0.477    90.72
2026.36    0.479    90.75
2026.46    0.480    90.79
2026.56    0.481    90.82
2026.66    0.483    90.85
2026.76    0.484    90.88
2026.86    0.485    90.92
2026.96    0.486    90.95
2027.06    0.487    90.98
2027.16    0.488    91.01
2027.26    0.489    91.04
2027.36    0.490    91.08
2027.46    0.490    91.11
2027.56    0.491    91.14
2027.66    0.492    91.17
2027.76    0.492    91.20
2027.86    0.493    91.23
2027.96    0.493    91.26
2028.06    0.493    91.30
2028.16    0.494    91.33
2028.26    0.494    91.36
2028.36    0.494    91.39
2028.46    0.494    91.42
2028.56    0.494    91.45
2028.66    0.494    91.48
2028.76    0.494    91.51
2028.86    0.494    91.54
2028.96    0.494    91.57
2029.06    0.493    91.61
2029.16    0.493    91.64
2029.26    0.493    91.67
2029.36    0.492    91.70
2029.46    0.492    91.73
2029.56    0.491    91.76
2029.66    0.490    91.79
2029.76    0.490    91.82
2029.86    0.489    91.86
2029.96    0.488    91.89
2030.06    0.487    91.92
2030.16    0.486    91.95
2030.26    0.485    91.98
2030.36    0.484    92.02
2030.46    0.482    92.05
2030.56    0.481    92.08
2030.66    0.480    92.11
2030.76    0.478    92.15
2030.86    0.477    92.18
2030.96    0.475    92.21
2031.06    0.474    92.25
2031.16    0.472    92.28
2031.26    0.470    92.32
2031.36    0.468    92.35
2031.46    0.467    92.38
2031.56    0.465    92.42
2031.66    0.463    92.45
2031.76    0.460    92.49
2031.86    0.458    92.53
2031.96    0.456    92.56
2032.06    0.454    92.60
2032.16    0.451    92.64
2032.26    0.449    92.67
2032.36    0.446    92.71
2032.46    0.444    92.75
2032.56    0.441    92.79
2032.66    0.438    92.83
2032.76    0.435    92.87
2032.86    0.432    92.91
2032.96    0.429    92.95
2033.06    0.426    92.99
2033.16    0.423    93.03
2033.26    0.420    93.07
2033.36    0.416    93.12
2033.46    0.413    93.16
2033.56    0.409    93.21
2033.66    0.405    93.25
2033.76    0.402    93.30
2033.86    0.398    93.35
2033.96    0.394    93.39
2034.06    0.390    93.44
2034.16    0.386    93.49
2034.26    0.382    93.55
2034.36    0.377    93.60
2034.46    0.373    93.65
2034.56    0.368    93.71
2034.66    0.364    93.76
2034.76    0.359    93.82
2034.86    0.354    93.88
2034.96    0.349    93.94

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 17:47:30