Double Star Calculator - Orbit

Orbital Elements for MCA37

WDS:	MCA37	WDS ID/Discoverer
P:	13.100	Orbital period (years)
a:	0.135	Semi-major axis (arcseconds)
i:	50.0	Inclination (degrees)
Ω:	173.0	Longitude of ascending node (degrees)
T:	1990.200	Epoch of periastron passage (year)
e:	0.08	Eccentricity
ω:	4.0	Longitude of periastron (degrees)
Start-Year:	2018.45	Year
End-Year:	2031.55	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA37
Position:	121954.39-004000.3	Epoch-2000 right ascension and declination
WDS-ID:	12199-0040	WDS designation
Discoverer Code:	MCA37	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	107259	HD catalog number
Hipparcos number:	60129	Hipparcos catalog number
V1:	3.89	Magnitude of the primary
V2:	5.9	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	2	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Sod1999	Reference

Double Star Orbit for MCA37

WDS 6th Orbit including measures of MCA37

-- 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 MCA37

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.087    86.71
--------------------------
2018.45    0.091   231.35
2018.55    0.090   235.29
2018.65    0.088   239.36
2018.75    0.087   243.53
2018.85    0.086   247.80
2018.95    0.086   252.13
2019.05    0.086   256.50
2019.15    0.086   260.88
2019.25    0.086   265.25
2019.35    0.087   269.56
2019.45    0.087   273.80
2019.55    0.089   277.94
2019.65    0.090   281.96
2019.75    0.092   285.84
2019.85    0.094   289.58
2019.95    0.096   293.17
2020.05    0.098   296.61
2020.15    0.100   299.89
2020.25    0.102   303.02
2020.35    0.105   306.00
2020.45    0.107   308.85
2020.55    0.110   311.57
2020.65    0.113   314.16
2020.75    0.115   316.64
2020.85    0.118   319.01
2020.95    0.120   321.28
2021.05    0.123   323.46
2021.15    0.125   325.55
2021.25    0.127   327.57
2021.35    0.129   329.53
2021.45    0.131   331.41
2021.55    0.133   333.25
2021.65    0.135   335.03
2021.75    0.137   336.76
2021.85    0.138   338.45
2021.95    0.140   340.11
2022.05    0.141   341.73
2022.15    0.142   343.33
2022.25    0.143   344.90
2022.35    0.144   346.46
2022.45    0.145   348.00
2022.55    0.145   349.52
2022.65    0.146   351.04
2022.75    0.146   352.55
2022.85    0.146   354.06
2022.95    0.146   355.57
2023.05    0.145   357.09
2023.15    0.145   358.62
2023.25    0.144     0.15
2023.35    0.143     1.71
2023.45    0.142     3.28
2023.55    0.141     4.88
2023.65    0.140     6.50
2023.75    0.139     8.15
2023.85    0.137     9.84
2023.95    0.135    11.57
2024.05    0.134    13.35
2024.15    0.132    15.18
2024.25    0.130    17.06
2024.35    0.127    19.00
2024.45    0.125    21.01
2024.55    0.123    23.10
2024.65    0.121    25.27
2024.75    0.118    27.52
2024.85    0.116    29.87
2024.95    0.113    32.33
2025.05    0.111    34.89
2025.15    0.108    37.58
2025.25    0.106    40.39
2025.35    0.103    43.33
2025.45    0.101    46.41
2025.55    0.099    49.63
2025.65    0.097    53.01
2025.75    0.095    56.52
2025.85    0.093    60.18
2025.95    0.091    63.98
2026.05    0.090    67.91
2026.15    0.089    71.96
2026.25    0.088    76.09
2026.35    0.087    80.31
2026.45    0.087    84.57
2026.55    0.087    88.86
2026.65    0.087    93.14
2026.75    0.087    97.38
2026.85    0.088   101.57
2026.95    0.089   105.68
2027.05    0.090   109.69
2027.15    0.092   113.58
2027.25    0.093   117.35
2027.35    0.095   120.99
2027.45    0.097   124.49
2027.55    0.099   127.85
2027.65    0.101   131.08
2027.75    0.103   134.18
2027.85    0.105   137.15
2027.95    0.107   140.02
2028.05    0.109   142.77
2028.15    0.111   145.42
2028.25    0.113   147.98
2028.35    0.115   150.46
2028.45    0.116   152.87
2028.55    0.118   155.21
2028.65    0.119   157.49
2028.75    0.121   159.72
2028.85    0.122   161.90
2028.95    0.123   164.06
2029.05    0.123   166.18
2029.15    0.124   168.28
2029.25    0.124   170.37
2029.35    0.124   172.45
2029.45    0.124   174.53
2029.55    0.124   176.62
2029.65    0.123   178.72
2029.75    0.123   180.84
2029.85    0.122   182.98
2029.95    0.121   185.17
2030.05    0.120   187.39
2030.15    0.118   189.66
2030.25    0.117   191.99
2030.35    0.115   194.39
2030.45    0.113   196.86
2030.55    0.111   199.42
2030.65    0.109   202.06
2030.75    0.107   204.81
2030.85    0.105   207.67
2030.95    0.103   210.64
2031.05    0.101   213.75
2031.15    0.099   216.99
2031.25    0.096   220.36
2031.35    0.095   223.88
2031.45    0.093   227.55

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 16:45:23