Double Star Calculator - Orbit

Orbital Elements for HDS3172

WDS:	HDS3172	WDS ID/Discoverer
P:	10.510	Orbital period (years)
a:	0.1444	Semi-major axis (arcseconds)
i:	97.4	Inclination (degrees)
Ω:	155.4	Longitude of ascending node (degrees)
T:	2017.374	Epoch of periastron passage (year)
e:	0.288	Eccentricity
ω:	325.7	Longitude of periastron (degrees)
Start-Year:	2019.745	Year
End-Year:	2030.255	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS3172
Position:	222247.28-293710.0	Epoch-2000 right ascension and declination
WDS-ID:	22228-2937	WDS designation
Discoverer Code:	HDS3172	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	212146	HD catalog number
Hipparcos number:	110483	Hipparcos catalog number
V1:	8.46	Magnitude of the primary
V2:	10.69	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Tok2017b	Reference

Double Star Orbit for HDS3172

WDS 6th Orbit including measures of HDS3172

-- 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 HDS3172

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.049   317.85
--------------------------
2019.74    0.033   120.46
2019.84    0.028   110.83
2019.94    0.023    97.06
2020.04    0.021    78.49
2020.14    0.021    57.45
2020.24    0.023    38.71
2020.34    0.028    24.75
2020.44    0.033    14.98
2020.54    0.039     8.10
2020.64    0.045     3.11
2020.74    0.052   359.36
2020.84    0.058   356.46
2020.94    0.065   354.14
2021.04    0.072   352.24
2021.14    0.078   350.66
2021.24    0.084   349.32
2021.34    0.091   348.17
2021.44    0.097   347.16
2021.54    0.103   346.27
2021.64    0.108   345.48
2021.74    0.114   344.76
2021.84    0.119   344.11
2021.94    0.124   343.52
2022.04    0.129   342.97
2022.14    0.134   342.47
2022.24    0.139   341.99
2022.34    0.143   341.55
2022.44    0.147   341.13
2022.54    0.151   340.74
2022.64    0.155   340.36
2022.74    0.158   340.00
2022.84    0.161   339.66
2022.94    0.164   339.32
2023.04    0.167   339.00
2023.14    0.169   338.69
2023.24    0.171   338.39
2023.34    0.173   338.09
2023.44    0.174   337.79
2023.54    0.175   337.51
2023.64    0.176   337.22
2023.74    0.177   336.94
2023.84    0.177   336.66
2023.94    0.177   336.38
2024.04    0.176   336.09
2024.14    0.175   335.81
2024.24    0.174   335.52
2024.34    0.173   335.23
2024.44    0.171   334.93
2024.54    0.169   334.62
2024.64    0.166   334.31
2024.74    0.163   333.99
2024.84    0.160   333.65
2024.94    0.156   333.30
2025.04    0.152   332.93
2025.14    0.148   332.53
2025.24    0.143   332.12
2025.34    0.137   331.67
2025.44    0.132   331.18
2025.54    0.126   330.65
2025.64    0.119   330.06
2025.74    0.112   329.41
2025.84    0.105   328.66
2025.94    0.098   327.80
2026.04    0.090   326.80
2026.14    0.081   325.59
2026.24    0.073   324.09
2026.34    0.064   322.19
2026.44    0.054   319.65
2026.54    0.045   316.07
2026.64    0.036   310.64
2026.74    0.027   301.51
2026.84    0.019   284.19
2026.94    0.015   251.36
2027.04    0.017   213.58
2027.14    0.024   191.26
2027.24    0.032   179.83
2027.34    0.042   173.31
2027.44    0.051   169.13
2027.54    0.059   166.21
2027.64    0.068   164.03
2027.74    0.076   162.31
2027.84    0.083   160.91
2027.94    0.089   159.71
2028.04    0.094   158.67
2028.14    0.099   157.73
2028.24    0.103   156.86
2028.34    0.105   156.05
2028.44    0.107   155.27
2028.54    0.108   154.51
2028.64    0.108   153.76
2028.74    0.107   153.00
2028.84    0.106   152.22
2028.94    0.103   151.41
2029.04    0.100   150.56
2029.14    0.096   149.65
2029.24    0.092   148.66
2029.34    0.088   147.57
2029.44    0.082   146.35
2029.54    0.077   144.96
2029.64    0.071   143.35
2029.74    0.065   141.44
2029.84    0.059   139.14
2029.94    0.052   136.28
2030.04    0.046   132.64
2030.14    0.040   127.83
2030.24    0.034   121.25

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 18:39:16