Double Star Calculator - Orbit

Orbital Elements for KRS2BA,BB

WDS:	KRS2BA,BB	WDS ID/Discoverer
P:	27.180	Orbital period (years)
a:	0.08512	Semi-major axis (arcseconds)
i:	21.1	Inclination (degrees)
Ω:	94.4	Longitude of ascending node (degrees)
T:	1996.100	Epoch of periastron passage (year)
e:	0.551	Eccentricity
ω:	45.8	Longitude of periastron (degrees)
Start-Year:	2011.41	Year
End-Year:	2038.59	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for KRS2BA,BB
Position:	042159.42+193206.5	Epoch-2000 right ascension and declination
WDS-ID:	04220+1932	WDS designation
Discoverer Code:	KRS2BA,BB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	284419B	HD catalog number
Hipparcos number:	20390B	Hipparcos catalog number
V1:	8.2 k	Magnitude of the primary
V2:	8.2 k	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2019	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:	Sfr2020	Reference

Double Star Orbit for KRS2BA,BB

WDS 6th Orbit including measures of KRS2BA,BB

-- 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 KRS2BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.070   249.52
--------------------------
2011.41    0.125   326.25
2011.51    0.125   326.73
2011.61    0.124   327.21
2011.71    0.124   327.70
2011.81    0.124   328.18
2011.91    0.124   328.67
2012.01    0.123   329.16
2012.11    0.123   329.66
2012.21    0.123   330.15
2012.31    0.122   330.65
2012.41    0.122   331.15
2012.51    0.122   331.66
2012.61    0.121   332.16
2012.71    0.121   332.67
2012.81    0.121   333.18
2012.91    0.120   333.70
2013.01    0.120   334.22
2013.11    0.119   334.74
2013.21    0.119   335.27
2013.31    0.119   335.80
2013.41    0.118   336.33
2013.51    0.118   336.87
2013.61    0.117   337.41
2013.71    0.117   337.96
2013.81    0.116   338.51
2013.91    0.116   339.06
2014.01    0.115   339.62
2014.11    0.115   340.19
2014.21    0.114   340.76
2014.31    0.114   341.33
2014.41    0.113   341.91
2014.51    0.113   342.50
2014.61    0.112   343.09
2014.71    0.112   343.69
2014.81    0.111   344.29
2014.91    0.110   344.90
2015.01    0.110   345.52
2015.11    0.109   346.14
2015.21    0.109   346.77
2015.31    0.108   347.40
2015.41    0.107   348.05
2015.51    0.107   348.70
2015.61    0.106   349.36
2015.71    0.105   350.03
2015.81    0.105   350.70
2015.91    0.104   351.39
2016.01    0.103   352.08
2016.11    0.103   352.78
2016.21    0.102   353.50
2016.31    0.101   354.22
2016.41    0.101   354.95
2016.51    0.100   355.70
2016.61    0.099   356.45
2016.71    0.098   357.22
2016.81    0.098   358.00
2016.91    0.097   358.79
2017.01    0.096   359.59
2017.11    0.095     0.41
2017.21    0.094     1.24
2017.31    0.094     2.08
2017.41    0.093     2.94
2017.51    0.092     3.82
2017.61    0.091     4.71
2017.71    0.090     5.62
2017.81    0.089     6.54
2017.91    0.089     7.49
2018.01    0.088     8.45
2018.11    0.087     9.43
2018.21    0.086    10.44
2018.31    0.085    11.46
2018.41    0.084    12.51
2018.51    0.083    13.58
2018.61    0.082    14.67
2018.71    0.081    15.79
2018.81    0.080    16.94
2018.91    0.079    18.11
2019.01    0.078    19.32
2019.11    0.077    20.55
2019.21    0.076    21.82
2019.31    0.075    23.12
2019.41    0.074    24.45
2019.51    0.073    25.82
2019.61    0.072    27.23
2019.71    0.071    28.68
2019.81    0.070    30.18
2019.91    0.069    31.72
2020.01    0.068    33.30
2020.11    0.067    34.94
2020.21    0.066    36.63
2020.31    0.065    38.38
2020.41    0.064    40.18
2020.51    0.063    42.05
2020.61    0.062    43.98
2020.71    0.061    45.98
2020.81    0.059    48.06
2020.91    0.058    50.21
2021.01    0.057    52.45
2021.11    0.056    54.77
2021.21    0.055    57.19
2021.31    0.054    59.70
2021.41    0.053    62.32
2021.51    0.052    65.05
2021.61    0.051    67.90
2021.71    0.050    70.87
2021.81    0.049    73.98
2021.91    0.047    77.22
2022.01    0.046    80.61
2022.11    0.045    84.15
2022.21    0.044    87.85
2022.31    0.043    91.72
2022.41    0.043    95.76
2022.51    0.042    99.99
2022.61    0.041   104.39
2022.71    0.040   108.98
2022.81    0.039   113.74
2022.91    0.039   118.68
2023.01    0.038   123.78
2023.11    0.038   129.03
2023.21    0.037   134.40
2023.31    0.037   139.86
2023.41    0.037   145.38
2023.51    0.037   150.94
2023.61    0.037   156.47
2023.71    0.037   161.95
2023.81    0.037   167.34
2023.91    0.038   172.60
2024.01    0.039   177.71
2024.11    0.039   182.63
2024.21    0.040   187.36
2024.31    0.041   191.88
2024.41    0.042   196.18
2024.51    0.043   200.27
2024.61    0.044   204.15
2024.71    0.046   207.83
2024.81    0.047   211.30
2024.91    0.048   214.60
2025.01    0.050   217.71
2025.11    0.051   220.66
2025.21    0.052   223.45
2025.31    0.054   226.10
2025.41    0.055   228.61
2025.51    0.057   231.00
2025.61    0.058   233.27
2025.71    0.059   235.43
2025.81    0.061   237.50
2025.91    0.062   239.47
2026.01    0.064   241.35
2026.11    0.065   243.15
2026.21    0.066   244.88
2026.31    0.068   246.54
2026.41    0.069   248.13
2026.51    0.070   249.67
2026.61    0.072   251.14
2026.71    0.073   252.57
2026.81    0.074   253.94
2026.91    0.076   255.27
2027.01    0.077   256.56
2027.11    0.078   257.80
2027.21    0.079   259.01
2027.31    0.081   260.18
2027.41    0.082   261.31
2027.51    0.083   262.42
2027.61    0.084   263.49
2027.71    0.085   264.53
2027.81    0.086   265.55
2027.91    0.087   266.54
2028.01    0.088   267.51
2028.11    0.089   268.46
2028.21    0.091   269.38
2028.31    0.092   270.28
2028.41    0.093   271.16
2028.51    0.094   272.03
2028.61    0.094   272.87
2028.71    0.095   273.70
2028.81    0.096   274.51
2028.91    0.097   275.31
2029.01    0.098   276.09
2029.11    0.099   276.86
2029.21    0.100   277.61
2029.31    0.101   278.35
2029.41    0.102   279.08
2029.51    0.102   279.80
2029.61    0.103   280.51
2029.71    0.104   281.20
2029.81    0.105   281.88
2029.91    0.106   282.56
2030.01    0.106   283.22
2030.11    0.107   283.88
2030.21    0.108   284.53
2030.31    0.109   285.16
2030.41    0.109   285.79
2030.51    0.110   286.42
2030.61    0.111   287.03
2030.71    0.111   287.64
2030.81    0.112   288.24
2030.91    0.112   288.83
2031.01    0.113   289.42
2031.11    0.114   290.00
2031.21    0.114   290.58
2031.31    0.115   291.15
2031.41    0.115   291.71
2031.51    0.116   292.27
2031.61    0.116   292.82
2031.71    0.117   293.37
2031.81    0.117   293.92
2031.91    0.118   294.46
2032.01    0.118   294.99
2032.11    0.119   295.52
2032.21    0.119   296.05
2032.31    0.120   296.57
2032.41    0.120   297.09
2032.51    0.121   297.61
2032.61    0.121   298.12
2032.71    0.121   298.63
2032.81    0.122   299.13
2032.91    0.122   299.64
2033.01    0.122   300.14
2033.11    0.123   300.63
2033.21    0.123   301.13
2033.31    0.123   301.62
2033.41    0.124   302.11
2033.51    0.124   302.59
2033.61    0.124   303.08
2033.71    0.125   303.56
2033.81    0.125   304.04
2033.91    0.125   304.52
2034.01    0.125   305.00
2034.11    0.126   305.47
2034.21    0.126   305.94
2034.31    0.126   306.42
2034.41    0.126   306.89
2034.51    0.126   307.35
2034.61    0.127   307.82
2034.71    0.127   308.29
2034.81    0.127   308.75
2034.91    0.127   309.22
2035.01    0.127   309.68
2035.11    0.127   310.14
2035.21    0.127   310.60
2035.31    0.127   311.06
2035.41    0.127   311.52
2035.51    0.128   311.98
2035.61    0.128   312.44
2035.71    0.128   312.90
2035.81    0.128   313.36
2035.91    0.128   313.82
2036.01    0.128   314.27
2036.11    0.128   314.73
2036.21    0.128   315.19
2036.31    0.128   315.65
2036.41    0.128   316.10
2036.51    0.128   316.56
2036.61    0.128   317.02
2036.71    0.128   317.48
2036.81    0.128   317.94
2036.91    0.128   318.40
2037.01    0.127   318.86
2037.11    0.127   319.32
2037.21    0.127   319.78
2037.31    0.127   320.24
2037.41    0.127   320.70
2037.51    0.127   321.17
2037.61    0.127   321.63
2037.71    0.127   322.10
2037.81    0.126   322.56
2037.91    0.126   323.03
2038.01    0.126   323.50
2038.11    0.126   323.97
2038.21    0.126   324.44
2038.31    0.125   324.92
2038.41    0.125   325.39
2038.51    0.125   325.87

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 15:22:06