Double Star Calculator - Orbit

Orbital Elements for HDS1879AA,AB

WDS:	HDS1879AA,AB	WDS ID/Discoverer
P:	15.520	Orbital period (years)
a:	0.186	Semi-major axis (arcseconds)
i:	86.0	Inclination (degrees)
Ω:	214.1	Longitude of ascending node (degrees)
T:	2017.230	Epoch of periastron passage (year)
e:	0.775	Eccentricity
ω:	173.9	Longitude of periastron (degrees)
Start-Year:	2017.24	Year
End-Year:	2032.76	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1879AA,AB
Position:	132323.16+575422.2	Epoch-2000 right ascension and declination
WDS-ID:	13234+5754	WDS designation
Discoverer Code:	HDS1879AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	238224	HD catalog number
Hipparcos number:	65327	Hipparcos catalog number
V1:	9.86	Magnitude of the primary
V2:	10.14	Magnitude of the secondary
Equinox:		Equinox
Date:	2020	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:	Mit2021	Reference

Double Star Orbit for HDS1879AA,AB

WDS 6th Orbit including measures of HDS1879AA,AB

-- 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 HDS1879AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.321   214.17
--------------------------
2017.24    0.042    33.88
2017.34    0.041    35.92
2017.44    0.035    38.39
2017.54    0.026    42.29
2017.64    0.016    50.73
2017.74    0.007    83.36
2017.84    0.009   170.52
2017.94    0.018   193.23
2018.04    0.029   199.97
2018.14    0.039   203.15
2018.24    0.049   205.02
2018.34    0.059   206.25
2018.44    0.068   207.14
2018.54    0.077   207.82
2018.64    0.086   208.35
2018.74    0.095   208.78
2018.84    0.103   209.14
2018.94    0.111   209.45
2019.04    0.119   209.72
2019.14    0.127   209.95
2019.24    0.134   210.16
2019.34    0.142   210.34
2019.44    0.149   210.51
2019.54    0.156   210.66
2019.64    0.162   210.80
2019.74    0.169   210.93
2019.84    0.175   211.05
2019.94    0.181   211.16
2020.04    0.187   211.27
2020.14    0.193   211.37
2020.24    0.199   211.46
2020.34    0.204   211.54
2020.44    0.210   211.63
2020.54    0.215   211.71
2020.64    0.220   211.78
2020.74    0.225   211.85
2020.84    0.230   211.92
2020.94    0.234   211.99
2021.04    0.239   212.05
2021.14    0.243   212.11
2021.24    0.248   212.17
2021.34    0.252   212.23
2021.44    0.256   212.28
2021.54    0.260   212.33
2021.64    0.263   212.39
2021.74    0.267   212.44
2021.84    0.271   212.48
2021.94    0.274   212.53
2022.04    0.277   212.58
2022.14    0.280   212.62
2022.24    0.284   212.67
2022.34    0.287   212.71
2022.44    0.289   212.76
2022.54    0.292   212.80
2022.64    0.295   212.84
2022.74    0.297   212.88
2022.84    0.300   212.92
2022.94    0.302   212.96
2023.04    0.304   213.00
2023.14    0.307   213.03
2023.24    0.309   213.07
2023.34    0.310   213.11
2023.44    0.312   213.14
2023.54    0.314   213.18
2023.64    0.316   213.22
2023.74    0.317   213.25
2023.84    0.319   213.29
2023.94    0.320   213.32
2024.04    0.321   213.36
2024.14    0.322   213.39
2024.24    0.323   213.42
2024.34    0.324   213.46
2024.44    0.325   213.49
2024.54    0.326   213.52
2024.64    0.327   213.56
2024.74    0.327   213.59
2024.84    0.328   213.62
2024.94    0.328   213.66
2025.04    0.328   213.69
2025.14    0.329   213.72
2025.24    0.329   213.75
2025.34    0.329   213.79
2025.44    0.329   213.82
2025.54    0.328   213.85
2025.64    0.328   213.89
2025.74    0.328   213.92
2025.84    0.327   213.95
2025.94    0.327   213.98
2026.04    0.326   214.02
2026.14    0.325   214.05
2026.24    0.324   214.09
2026.34    0.323   214.12
2026.44    0.322   214.15
2026.54    0.321   214.19
2026.64    0.320   214.22
2026.74    0.318   214.26
2026.84    0.317   214.29
2026.94    0.315   214.33
2027.04    0.314   214.36
2027.14    0.312   214.40
2027.24    0.310   214.44
2027.34    0.308   214.47
2027.44    0.306   214.51
2027.54    0.303   214.55
2027.64    0.301   214.59
2027.74    0.298   214.63
2027.84    0.296   214.67
2027.94    0.293   214.71
2028.04    0.290   214.75
2028.14    0.287   214.79
2028.24    0.284   214.83
2028.34    0.281   214.88
2028.44    0.278   214.92
2028.54    0.274   214.97
2028.64    0.271   215.02
2028.74    0.267   215.07
2028.84    0.263   215.12
2028.94    0.259   215.17
2029.04    0.255   215.22
2029.14    0.251   215.28
2029.24    0.246   215.33
2029.34    0.242   215.39
2029.44    0.237   215.46
2029.54    0.232   215.52
2029.64    0.227   215.59
2029.74    0.222   215.66
2029.84    0.217   215.73
2029.94    0.211   215.81
2030.04    0.205   215.89
2030.14    0.199   215.98
2030.24    0.193   216.07
2030.34    0.187   216.17
2030.44    0.180   216.27
2030.54    0.174   216.38
2030.64    0.167   216.51
2030.74    0.159   216.64
2030.84    0.152   216.79
2030.94    0.144   216.95
2031.04    0.136   217.13
2031.14    0.128   217.33
2031.24    0.119   217.56
2031.34    0.110   217.83
2031.44    0.101   218.15
2031.54    0.091   218.54
2031.64    0.081   219.01
2031.74    0.071   219.63
2031.84    0.060   220.46
2031.94    0.049   221.67
2032.04    0.037   223.63
2032.14    0.025   227.44
2032.24    0.013   238.45
2032.34    0.005   317.36
2032.44    0.014    18.08
2032.54    0.026    27.40
2032.64    0.036    31.13
2032.74    0.041    33.47

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 16:55:43