Double Star Calculator - Orbit

Orbital Elements for B780

WDS:	B780	WDS ID/Discoverer
P:	10.630	Orbital period (years)
a:	0.123	Semi-major axis (arcseconds)
i:	128.6	Inclination (degrees)
Ω:	86.1	Longitude of ascending node (degrees)
T:	2005.860	Epoch of periastron passage (year)
e:	0.338	Eccentricity
ω:	17.6	Longitude of periastron (degrees)
Start-Year:	2019.685	Year
End-Year:	2030.315	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B780
Position:	094042.60-575900.9	Epoch-2000 right ascension and declination
WDS-ID:	09407-5759	WDS designation
Discoverer Code:	B780	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	84121	HD catalog number
Hipparcos number:	47479	Hipparcos catalog number
V1:	5.85	Magnitude of the primary
V2:	6.48	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2014	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:	Tok2015c	Reference

Double Star Orbit for B780

WDS 6th Orbit including measures of B780

-- 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 B780

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.082   102.59
--------------------------
2019.68    0.139   281.10
2019.78    0.142   279.58
2019.88    0.145   278.12
2019.98    0.147   276.71
2020.08    0.150   275.34
2020.18    0.152   274.02
2020.28    0.154   272.72
2020.38    0.155   271.46
2020.48    0.157   270.23
2020.58    0.158   269.02
2020.68    0.159   267.82
2020.78    0.160   266.65
2020.88    0.161   265.48
2020.98    0.162   264.33
2021.08    0.162   263.18
2021.18    0.162   262.04
2021.28    0.162   260.90
2021.38    0.162   259.76
2021.48    0.162   258.61
2021.58    0.162   257.47
2021.68    0.161   256.31
2021.78    0.160   255.14
2021.88    0.159   253.96
2021.98    0.158   252.76
2022.08    0.157   251.55
2022.18    0.155   250.31
2022.28    0.154   249.05
2022.38    0.152   247.76
2022.48    0.150   246.44
2022.58    0.148   245.08
2022.68    0.146   243.69
2022.78    0.143   242.24
2022.88    0.141   240.75
2022.98    0.138   239.21
2023.08    0.136   237.61
2023.18    0.133   235.93
2023.28    0.130   234.19
2023.38    0.127   232.36
2023.48    0.124   230.44
2023.58    0.120   228.42
2023.68    0.117   226.29
2023.78    0.114   224.04
2023.88    0.111   221.65
2023.98    0.107   219.11
2024.08    0.104   216.41
2024.18    0.100   213.52
2024.28    0.097   210.44
2024.38    0.094   207.14
2024.48    0.091   203.60
2024.58    0.088   199.82
2024.68    0.085   195.78
2024.78    0.082   191.47
2024.88    0.080   186.89
2024.98    0.078   182.04
2025.08    0.076   176.94
2025.18    0.075   171.62
2025.28    0.073   166.12
2025.38    0.073   160.50
2025.48    0.073   154.80
2025.58    0.073   149.09
2025.68    0.073   143.43
2025.78    0.074   137.86
2025.88    0.075   132.43
2025.98    0.076   127.16
2026.08    0.077   122.06
2026.18    0.079   117.14
2026.28    0.080   112.38
2026.38    0.081   107.76
2026.48    0.082   103.26
2026.58    0.083    98.84
2026.68    0.083    94.47
2026.78    0.083    90.11
2026.88    0.082    85.70
2026.98    0.081    81.21
2027.08    0.080    76.57
2027.18    0.078    71.73
2027.28    0.076    66.62
2027.38    0.073    61.17
2027.48    0.070    55.31
2027.58    0.068    48.99
2027.68    0.065    42.18
2027.78    0.063    34.85
2027.88    0.061    27.08
2027.98    0.060    18.95
2028.08    0.060    10.66
2028.18    0.061     2.40
2028.28    0.062   354.39
2028.38    0.064   346.81
2028.48    0.067   339.77
2028.58    0.070   333.34
2028.68    0.074   327.52
2028.78    0.078   322.28
2028.88    0.082   317.57
2028.98    0.086   313.33
2029.08    0.091   309.50
2029.18    0.095   306.04
2029.28    0.100   302.88
2029.38    0.104   300.00
2029.48    0.109   297.35
2029.58    0.113   294.90
2029.68    0.117   292.62
2029.78    0.121   290.50
2029.88    0.125   288.51
2029.98    0.128   286.63
2030.08    0.132   284.86
2030.18    0.135   283.17
2030.28    0.138   281.57

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 16:20:07