Double Star Calculator - Orbit

Orbital Elements for LAB3

WDS:	LAB3	WDS ID/Discoverer
P:	10.808	Orbital period (years)
a:	0.099	Semi-major axis (arcseconds)
i:	32.074	Inclination (degrees)
Ω:	353.867	Longitude of ascending node (degrees)
T:	1979.079	Epoch of periastron passage (year)
e:	0.939	Eccentricity
ω:	180.822	Longitude of periastron (degrees)
Start-Year:	2019.596	Year
End-Year:	2030.404	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for LAB3
Position:	160020.01-223717.8	Epoch-2000 right ascension and declination
WDS-ID:	16003-2237	WDS designation
Discoverer Code:	LAB3	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	143275	HD catalog number
Hipparcos number:	78401	Hipparcos catalog number
V1:	2.39	Magnitude of the primary
V2:	4.62	Magnitude of the secondary
Equinox:		Equinox
Date:		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:	Mdz2022	Reference

Double Star Orbit for LAB3

WDS 6th Orbit including measures of LAB3

-- 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 LAB3

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.186   351.36
--------------------------
2019.60    0.159     2.42
2019.70    0.157     2.80
2019.80    0.154     3.19
2019.90    0.151     3.60
2020.00    0.148     4.03
2020.10    0.145     4.47
2020.20    0.142     4.93
2020.30    0.138     5.42
2020.40    0.135     5.93
2020.50    0.131     6.47
2020.60    0.127     7.05
2020.70    0.123     7.66
2020.80    0.118     8.31
2020.90    0.114     9.02
2021.00    0.109     9.79
2021.10    0.104    10.62
2021.20    0.099    11.55
2021.30    0.093    12.58
2021.40    0.087    13.75
2021.50    0.081    15.10
2021.60    0.074    16.67
2021.70    0.067    18.57
2021.80    0.060    20.95
2021.90    0.051    24.06
2022.00    0.042    28.49
2022.10    0.031    35.70
2022.20    0.019    51.39
2022.30    0.006   137.19
2022.40    0.015   288.23
2022.50    0.028   310.42
2022.60    0.039   319.06
2022.70    0.049   324.05
2022.80    0.057   327.46
2022.90    0.065   330.00
2023.00    0.073   332.00
2023.10    0.079   333.65
2023.20    0.086   335.05
2023.30    0.092   336.26
2023.40    0.097   337.33
2023.50    0.103   338.28
2023.60    0.108   339.14
2023.70    0.113   339.92
2023.80    0.117   340.64
2023.90    0.122   341.31
2024.00    0.126   341.93
2024.10    0.130   342.51
2024.20    0.134   343.06
2024.30    0.137   343.58
2024.40    0.141   344.07
2024.50    0.144   344.54
2024.60    0.147   344.99
2024.70    0.150   345.41
2024.80    0.153   345.83
2024.90    0.156   346.22
2025.00    0.159   346.61
2025.10    0.161   346.98
2025.20    0.164   347.34
2025.30    0.166   347.69
2025.40    0.168   348.03
2025.50    0.170   348.36
2025.60    0.172   348.69
2025.70    0.174   349.00
2025.80    0.176   349.31
2025.90    0.178   349.62
2026.00    0.179   349.92
2026.10    0.181   350.21
2026.20    0.182   350.50
2026.30    0.183   350.79
2026.40    0.185   351.07
2026.50    0.186   351.35
2026.60    0.187   351.62
2026.70    0.188   351.89
2026.80    0.188   352.16
2026.90    0.189   352.43
2027.00    0.190   352.69
2027.10    0.190   352.96
2027.20    0.191   353.22
2027.30    0.191   353.48
2027.40    0.192   353.74
2027.50    0.192   354.00
2027.60    0.192   354.26
2027.70    0.192   354.51
2027.80    0.192   354.77
2027.90    0.192   355.03
2028.00    0.192   355.29
2028.10    0.191   355.55
2028.20    0.191   355.81
2028.30    0.190   356.07
2028.40    0.190   356.33
2028.50    0.189   356.60
2028.60    0.189   356.87
2028.70    0.188   357.13
2028.80    0.187   357.40
2028.90    0.186   357.68
2029.00    0.185   357.96
2029.10    0.184   358.24
2029.20    0.182   358.52
2029.30    0.181   358.81
2029.40    0.180   359.10
2029.50    0.178   359.40
2029.60    0.176   359.70
2029.70    0.175     0.01
2029.80    0.173     0.32
2029.90    0.171     0.65
2030.00    0.169     0.98
2030.10    0.167     1.31
2030.20    0.164     1.66
2030.30    0.162     2.02
2030.40    0.160     2.39

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 17:21:30