Double Star Calculator - Orbit

Orbital Elements for SIG6

WDS:	SIG6	WDS ID/Discoverer
P:	10.720	Orbital period (years)
a:	0.0861	Semi-major axis (arcseconds)
i:	144.7	Inclination (degrees)
Ω:	81.8	Longitude of ascending node (degrees)
T:	2018.085	Epoch of periastron passage (year)
e:	0.315	Eccentricity
ω:	14.0	Longitude of periastron (degrees)
Start-Year:	2019.64	Year
End-Year:	2030.36	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SIG6
Position:	213211.45+134158.4	Epoch-2000 right ascension and declination
WDS-ID:	21322+1342	WDS designation
Discoverer Code:	SIG6	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	16.07	Magnitude of the primary
V2:	16.91	Magnitude of the secondary
Equinox:		Equinox
Date:	2008	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Dup2017	Reference

Double Star Orbit for SIG6

WDS 6th Orbit including measures of SIG6

-- 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 SIG6

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.073   183.26
--------------------------
2019.64    0.063   338.07
2019.74    0.065   333.35
2019.84    0.067   328.89
2019.94    0.069   324.70
2020.04    0.071   320.76
2020.14    0.073   317.05
2020.24    0.075   313.56
2020.34    0.078   310.26
2020.44    0.080   307.15
2020.54    0.082   304.21
2020.64    0.084   301.42
2020.74    0.086   298.76
2020.84    0.088   296.23
2020.94    0.090   293.82
2021.04    0.092   291.50
2021.14    0.094   289.28
2021.24    0.096   287.15
2021.34    0.098   285.09
2021.44    0.099   283.10
2021.54    0.101   281.17
2021.64    0.102   279.30
2021.74    0.104   277.47
2021.84    0.105   275.70
2021.94    0.106   273.96
2022.04    0.107   272.26
2022.14    0.108   270.59
2022.24    0.109   268.95
2022.34    0.110   267.34
2022.44    0.110   265.75
2022.54    0.111   264.17
2022.64    0.111   262.61
2022.74    0.112   261.07
2022.84    0.112   259.53
2022.94    0.112   258.00
2023.04    0.113   256.48
2023.14    0.113   254.96
2023.24    0.113   253.43
2023.34    0.112   251.91
2023.44    0.112   250.38
2023.54    0.112   248.84
2023.64    0.111   247.29
2023.74    0.111   245.73
2023.84    0.110   244.15
2023.94    0.110   242.56
2024.04    0.109   240.94
2024.14    0.108   239.30
2024.24    0.107   237.64
2024.34    0.106   235.94
2024.44    0.105   234.21
2024.54    0.104   232.44
2024.64    0.103   230.64
2024.74    0.101   228.79
2024.84    0.100   226.89
2024.94    0.099   224.94
2025.04    0.097   222.93
2025.14    0.096   220.85
2025.24    0.094   218.71
2025.34    0.093   216.50
2025.44    0.091   214.21
2025.54    0.089   211.83
2025.64    0.087   209.36
2025.74    0.086   206.79
2025.84    0.084   204.11
2025.94    0.082   201.32
2026.04    0.081   198.41
2026.14    0.079   195.37
2026.24    0.077   192.20
2026.34    0.075   188.88
2026.44    0.074   185.41
2026.54    0.072   181.79
2026.64    0.071   178.01
2026.74    0.069   174.08
2026.84    0.068   169.98
2026.94    0.067   165.72
2027.04    0.066   161.32
2027.14    0.065   156.76
2027.24    0.064   152.08
2027.34    0.063   147.27
2027.44    0.062   142.36
2027.54    0.062   137.36
2027.64    0.061   132.29
2027.74    0.061   127.15
2027.84    0.061   121.98
2027.94    0.061   116.77
2028.04    0.061   111.54
2028.14    0.061   106.29
2028.24    0.060   101.01
2028.34    0.060    95.70
2028.44    0.060    90.36
2028.54    0.060    84.96
2028.64    0.059    79.50
2028.74    0.059    73.96
2028.84    0.058    68.32
2028.94    0.058    62.57
2029.04    0.057    56.70
2029.14    0.056    50.70
2029.24    0.056    44.59
2029.34    0.055    38.36
2029.44    0.055    32.06
2029.54    0.055    25.71
2029.64    0.055    19.37
2029.74    0.056    13.08
2029.84    0.056     6.89
2029.94    0.057     0.86
2030.04    0.058   355.03
2030.14    0.059   349.44
2030.24    0.061   344.11
2030.34    0.063   339.05

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 18:27:08