Double Star Calculator - Orbit

Orbital Elements for RUC7
WDS: RUC7 WDS ID/Discoverer
P: 19.590 Orbital period (years)
a: 0.055600000000000004 Semi-major axis (arcseconds)
i: 94.4 Inclination (degrees)
Ω: 356.0 Longitude of ascending node (degrees)
T: 1955.636 Epoch of periastron passage (year)
e: 0.12 Eccentricity
ω: 247.3 Longitude of periastron (degrees)
Start-Year: 2015.205 Year
End-Year: 2034.795 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for RUC7
Position: 100140.39+172433.2 Epoch-2000 right ascension and declination
WDS-ID: 10017+1725 WDS designation
Discoverer Code: RUC7 Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 49136 Hipparcos catalog number
V1: 9.45 Magnitude of the primary
V2: . Magnitude of the secondary
Equinox: Equinox
Date: 2002 Date of last observation
Orbit grade: 9 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: n Flags
Ephemerides: Ephemerides
Code: Bks2005 Reference

Double Star Orbit for RUC7



WDS 6th Orbit including measures of RUC7

-- 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 RUC7
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.013   197.08
--------------------------
2015.20    0.005   128.01
2015.30    0.004   106.32
2015.40    0.004    77.06
2015.50    0.005    51.65
2015.60    0.006    35.57
2015.70    0.008    25.91
2015.80    0.009    19.78
2015.90    0.011    15.61
2016.00    0.013    12.62
2016.10    0.015    10.38
2016.20    0.017     8.63
2016.30    0.019     7.23
2016.40    0.020     6.09
2016.50    0.022     5.13
2016.60    0.024     4.31
2016.70    0.026     3.61
2016.80    0.027     2.99
2016.90    0.029     2.45
2017.00    0.031     1.96
2017.10    0.032     1.53
2017.20    0.034     1.13
2017.30    0.035     0.77
2017.40    0.037     0.44
2017.50    0.038     0.14
2017.60    0.040   359.85
2017.70    0.041   359.59
2017.80    0.042   359.34
2017.90    0.044   359.11
2018.00    0.045   358.89
2018.10    0.046   358.68
2018.20    0.047   358.48
2018.30    0.048   358.29
2018.40    0.049   358.10
2018.50    0.050   357.93
2018.60    0.051   357.76
2018.70    0.052   357.59
2018.80    0.053   357.44
2018.90    0.053   357.28
2019.00    0.054   357.13
2019.10    0.055   356.98
2019.20    0.055   356.84
2019.30    0.056   356.70
2019.40    0.056   356.56
2019.50    0.057   356.43
2019.60    0.057   356.29
2019.70    0.057   356.16
2019.80    0.057   356.03
2019.90    0.058   355.90
2020.00    0.058   355.77
2020.10    0.058   355.64
2020.20    0.058   355.51
2020.30    0.058   355.38
2020.40    0.058   355.25
2020.50    0.058   355.12
2020.60    0.057   354.99
2020.70    0.057   354.86
2020.80    0.057   354.72
2020.90    0.057   354.59
2021.00    0.056   354.45
2021.10    0.056   354.31
2021.20    0.055   354.17
2021.30    0.055   354.03
2021.40    0.054   353.89
2021.50    0.054   353.74
2021.60    0.053   353.59
2021.70    0.052   353.43
2021.80    0.052   353.27
2021.90    0.051   353.11
2022.00    0.050   352.94
2022.10    0.049   352.76
2022.20    0.048   352.58
2022.30    0.047   352.39
2022.40    0.046   352.19
2022.50    0.046   351.99
2022.60    0.044   351.78
2022.70    0.043   351.55
2022.80    0.042   351.32
2022.90    0.041   351.07
2023.00    0.040   350.81
2023.10    0.039   350.53
2023.20    0.038   350.23
2023.30    0.036   349.92
2023.40    0.035   349.58
2023.50    0.034   349.22
2023.60    0.033   348.83
2023.70    0.031   348.41
2023.80    0.030   347.95
2023.90    0.029   347.44
2024.00    0.027   346.88
2024.10    0.026   346.27
2024.20    0.024   345.58
2024.30    0.023   344.81
2024.40    0.021   343.93
2024.50    0.020   342.93
2024.60    0.019   341.76
2024.70    0.017   340.40
2024.80    0.016   338.79
2024.90    0.014   336.84
2025.00    0.013   334.44
2025.10    0.011   331.43
2025.20    0.010   327.55
2025.30    0.009   322.41
2025.40    0.007   315.41
2025.50    0.006   305.69
2025.60    0.005   292.23
2025.70    0.005   274.84
2025.80    0.005   255.66
2025.90    0.005   238.45
2026.00    0.006   225.22
2026.10    0.007   215.67
2026.20    0.009   208.80
2026.30    0.010   203.75
2026.40    0.011   199.92
2026.50    0.013   196.95
2026.60    0.014   194.58
2026.70    0.016   192.65
2026.80    0.017   191.05
2026.90    0.019   189.70
2027.00    0.020   188.54
2027.10    0.022   187.54
2027.20    0.023   186.67
2027.30    0.024   185.90
2027.40    0.026   185.21
2027.50    0.027   184.60
2027.60    0.029   184.04
2027.70    0.030   183.53
2027.80    0.031   183.07
2027.90    0.033   182.64
2028.00    0.034   182.25
2028.10    0.035   181.88
2028.20    0.036   181.54
2028.30    0.037   181.22
2028.40    0.039   180.93
2028.50    0.040   180.64
2028.60    0.041   180.38
2028.70    0.042   180.12
2028.80    0.043   179.88
2028.90    0.044   179.65
2029.00    0.045   179.43
2029.10    0.046   179.21
2029.20    0.046   179.01
2029.30    0.047   178.81
2029.40    0.048   178.62
2029.50    0.049   178.44
2029.60    0.049   178.25
2029.70    0.050   178.08
2029.80    0.050   177.91
2029.90    0.051   177.74
2030.00    0.051   177.57
2030.10    0.052   177.41
2030.20    0.052   177.25
2030.30    0.052   177.09
2030.40    0.052   176.93
2030.50    0.053   176.77
2030.60    0.053   176.62
2030.70    0.053   176.46
2030.80    0.053   176.31
2030.90    0.053   176.15
2031.00    0.052   175.99
2031.10    0.052   175.83
2031.20    0.052   175.67
2031.30    0.051   175.51
2031.40    0.051   175.35
2031.50    0.051   175.18
2031.60    0.050   175.01
2031.70    0.049   174.83
2031.80    0.049   174.65
2031.90    0.048   174.47
2032.00    0.047   174.27
2032.10    0.046   174.08
2032.20    0.045   173.87
2032.30    0.044   173.65
2032.40    0.043   173.43
2032.50    0.042   173.19
2032.60    0.041   172.94
2032.70    0.040   172.67
2032.80    0.038   172.38
2032.90    0.037   172.08
2033.00    0.036   171.75
2033.10    0.034   171.39
2033.20    0.033   171.00
2033.30    0.031   170.58
2033.40    0.029   170.10
2033.50    0.028   169.57
2033.60    0.026   168.98
2033.70    0.024   168.30
2033.80    0.023   167.51
2033.90    0.021   166.59
2034.00    0.019   165.50
2034.10    0.017   164.18
2034.20    0.015   162.55
2034.30    0.014   160.47
2034.40    0.012   157.72
2034.50    0.010   153.96
2034.60    0.008   148.52
2034.70    0.006   140.11






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 16:23:35



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