Double Star Calculator - Orbit

Orbital Elements for RED9

WDS:	RED9	WDS ID/Discoverer
P:	12.749	Orbital period (years)
a:	0.23716	Semi-major axis (arcseconds)
i:	138.68	Inclination (degrees)
Ω:	29.79	Longitude of ascending node (degrees)
T:	2028.317	Epoch of periastron passage (year)
e:	0.4856	Eccentricity
ω:	355.8	Longitude of periastron (degrees)
Start-Year:	2018.6255	Year
End-Year:	2031.3745	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for RED9
Position:	074642.56+200032.1	Epoch-2000 right ascension and declination
WDS-ID:	07467+2001	WDS designation
Discoverer Code:	RED9	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	12.23	Magnitude of the primary
V2:	12.83	Magnitude of the secondary
Equinox:		Equinox
Date:	2012	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:	Dup2017	Reference

Double Star Orbit for RED9

WDS 6th Orbit including measures of RED9

Error: Timeout while trying to load WDS 6th Orbit image.

Ephemeris of RED9

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.170   148.96
--------------------------
2018.63    0.245   249.04
2018.73    0.251   247.35
2018.83    0.257   245.73
2018.93    0.263   244.18
2019.03    0.268   242.70
2019.13    0.273   241.28
2019.23    0.279   239.91
2019.33    0.284   238.59
2019.43    0.289   237.32
2019.53    0.293   236.09
2019.63    0.298   234.89
2019.73    0.302   233.74
2019.83    0.306   232.61
2019.93    0.310   231.51
2020.03    0.314   230.44
2020.13    0.318   229.40
2020.23    0.321   228.37
2020.33    0.324   227.37
2020.43    0.327   226.39
2020.53    0.330   225.43
2020.63    0.333   224.48
2020.73    0.336   223.55
2020.83    0.338   222.63
2020.93    0.340   221.72
2021.03    0.342   220.83
2021.13    0.344   219.94
2021.23    0.346   219.06
2021.33    0.347   218.19
2021.43    0.348   217.33
2021.53    0.349   216.48
2021.63    0.350   215.62
2021.73    0.351   214.78
2021.83    0.352   213.93
2021.93    0.352   213.09
2022.03    0.352   212.25
2022.13    0.352   211.40
2022.23    0.352   210.56
2022.33    0.351   209.72
2022.43    0.351   208.87
2022.53    0.350   208.02
2022.63    0.349   207.17
2022.73    0.348   206.31
2022.83    0.347   205.45
2022.93    0.345   204.58
2023.03    0.343   203.70
2023.13    0.341   202.81
2023.23    0.339   201.91
2023.33    0.337   201.00
2023.43    0.335   200.07
2023.53    0.332   199.13
2023.63    0.329   198.18
2023.73    0.326   197.21
2023.83    0.323   196.22
2023.93    0.319   195.21
2024.03    0.316   194.17
2024.13    0.312   193.11
2024.23    0.308   192.03
2024.33    0.304   190.91
2024.43    0.299   189.77
2024.53    0.295   188.58
2024.63    0.290   187.36
2024.73    0.285   186.10
2024.83    0.280   184.79
2024.93    0.274   183.44
2025.03    0.269   182.02
2025.13    0.263   180.55
2025.23    0.257   179.01
2025.33    0.251   177.39
2025.43    0.245   175.70
2025.53    0.238   173.91
2025.63    0.232   172.02
2025.73    0.225   170.02
2025.83    0.218   167.90
2025.93    0.211   165.64
2026.03    0.204   163.22
2026.13    0.197   160.63
2026.23    0.190   157.84
2026.33    0.183   154.83
2026.43    0.175   151.57
2026.53    0.168   148.03
2026.63    0.161   144.19
2026.73    0.154   140.00
2026.83    0.148   135.43
2026.93    0.142   130.46
2027.03    0.136   125.05
2027.13    0.131   119.19
2027.23    0.127   112.89
2027.33    0.123   106.18
2027.43    0.120    99.09
2027.53    0.118    91.73
2027.63    0.117    84.16
2027.73    0.117    76.51
2027.83    0.117    68.86
2027.93    0.118    61.30
2028.03    0.119    53.85
2028.13    0.120    46.55
2028.23    0.121    39.39
2028.33    0.122    32.33
2028.43    0.122    25.34
2028.53    0.122    18.38
2028.63    0.122    11.42
2028.73    0.122     4.43
2028.83    0.122   357.40
2028.93    0.122   350.36
2029.03    0.122   343.33
2029.13    0.123   336.38
2029.23    0.124   329.55
2029.33    0.127   322.92
2029.43    0.129   316.54
2029.53    0.133   310.46
2029.63    0.137   304.72
2029.73    0.142   299.34
2029.83    0.147   294.31
2029.93    0.152   289.64
2030.03    0.158   285.31
2030.13    0.164   281.29
2030.23    0.171   277.57
2030.33    0.177   274.12
2030.43    0.184   270.91
2030.53    0.190   267.93
2030.63    0.197   265.15
2030.73    0.204   262.55
2030.83    0.210   260.12
2030.93    0.217   257.83
2031.03    0.223   255.68
2031.13    0.230   253.65
2031.23    0.236   251.72
2031.33    0.242   249.90

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 16:01:29