Double Star Calculator - Orbit

Orbital Elements for MCA15BA,BB

WDS:	MCA15BA,BB	WDS ID/Discoverer
P:	16.260	Orbital period (years)
a:	0.2178	Semi-major axis (arcseconds)
i:	92.35	Inclination (degrees)
Ω:	355.54	Longitude of ascending node (degrees)
T:	1998.510	Epoch of periastron passage (year)
e:	0.57	Eccentricity
ω:	250.1	Longitude of periastron (degrees)
Start-Year:	2016.87	Year
End-Year:	2033.13	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA15BA,BB
Position:	042834.43+155744.0	Epoch-2000 right ascension and declination
WDS-ID:	04287+1552	WDS designation
Discoverer Code:	MCA15BA,BB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	28307	HD catalog number
Hipparcos number:	20885	Hipparcos catalog number
V1:	3.84	Magnitude of the primary
V2:	7.3	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1994	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:	Trr1997c	Reference

Double Star Orbit for MCA15BA,BB

WDS 6th Orbit including measures of MCA15BA,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 MCA15BA,BB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.050   189.12
--------------------------
2016.87    0.192   355.34
2016.97    0.197   355.25
2017.07    0.201   355.16
2017.17    0.205   355.07
2017.27    0.208   354.99
2017.37    0.211   354.91
2017.47    0.214   354.83
2017.57    0.216   354.75
2017.67    0.218   354.68
2017.77    0.220   354.60
2017.87    0.221   354.53
2017.97    0.223   354.46
2018.07    0.224   354.39
2018.17    0.225   354.32
2018.27    0.225   354.25
2018.37    0.226   354.18
2018.47    0.226   354.11
2018.57    0.226   354.04
2018.67    0.226   353.97
2018.77    0.226   353.90
2018.87    0.225   353.83
2018.97    0.225   353.76
2019.07    0.224   353.69
2019.17    0.223   353.62
2019.27    0.222   353.55
2019.37    0.221   353.48
2019.47    0.220   353.41
2019.57    0.218   353.33
2019.67    0.217   353.26
2019.77    0.215   353.18
2019.87    0.213   353.10
2019.97    0.211   353.03
2020.07    0.209   352.94
2020.17    0.207   352.86
2020.27    0.205   352.78
2020.37    0.202   352.69
2020.47    0.200   352.61
2020.57    0.197   352.52
2020.67    0.195   352.42
2020.77    0.192   352.33
2020.87    0.189   352.23
2020.97    0.186   352.13
2021.07    0.183   352.03
2021.17    0.180   351.92
2021.27    0.177   351.81
2021.37    0.174   351.70
2021.47    0.171   351.58
2021.57    0.167   351.45
2021.67    0.164   351.32
2021.77    0.160   351.19
2021.87    0.157   351.05
2021.97    0.153   350.90
2022.07    0.150   350.75
2022.17    0.146   350.58
2022.27    0.142   350.41
2022.37    0.138   350.23
2022.47    0.134   350.04
2022.57    0.130   349.84
2022.67    0.126   349.63
2022.77    0.122   349.40
2022.87    0.118   349.15
2022.97    0.114   348.89
2023.07    0.110   348.61
2023.17    0.106   348.31
2023.27    0.102   347.98
2023.37    0.097   347.62
2023.47    0.093   347.23
2023.57    0.089   346.80
2023.67    0.084   346.33
2023.77    0.080   345.81
2023.87    0.076   345.22
2023.97    0.071   344.56
2024.07    0.067   343.82
2024.17    0.062   342.96
2024.27    0.058   341.98
2024.37    0.053   340.83
2024.47    0.049   339.46
2024.57    0.044   337.83
2024.67    0.040   335.82
2024.77    0.035   333.32
2024.87    0.031   330.11
2024.97    0.027   325.88
2025.07    0.023   320.13
2025.17    0.019   312.05
2025.27    0.016   300.46
2025.37    0.014   284.24
2025.47    0.013   264.08
2025.57    0.014   244.03
2025.67    0.016   228.03
2025.77    0.019   216.63
2025.87    0.023   208.67
2025.97    0.027   203.00
2026.07    0.031   198.83
2026.17    0.036   195.66
2026.27    0.040   193.17
2026.37    0.044   191.18
2026.47    0.049   189.55
2026.57    0.053   188.20
2026.67    0.058   187.05
2026.77    0.062   186.06
2026.87    0.067   185.21
2026.97    0.071   184.46
2027.07    0.075   183.80
2027.17    0.080   183.20
2027.27    0.084   182.67
2027.37    0.088   182.19
2027.47    0.092   181.75
2027.57    0.096   181.35
2027.67    0.100   180.98
2027.77    0.104   180.64
2027.87    0.107   180.33
2027.97    0.111   180.03
2028.07    0.115   179.75
2028.17    0.118   179.49
2028.27    0.121   179.24
2028.37    0.124   179.01
2028.47    0.127   178.78
2028.57    0.130   178.57
2028.67    0.132   178.36
2028.77    0.134   178.16
2028.87    0.136   177.97
2028.97    0.138   177.78
2029.07    0.140   177.60
2029.17    0.141   177.42
2029.27    0.141   177.24
2029.37    0.142   177.06
2029.47    0.142   176.89
2029.57    0.141   176.71
2029.67    0.140   176.53
2029.77    0.138   176.35
2029.87    0.135   176.16
2029.97    0.132   175.96
2030.07    0.128   175.75
2030.17    0.123   175.52
2030.27    0.117   175.28
2030.37    0.110   175.00
2030.47    0.101   174.68
2030.57    0.092   174.30
2030.67    0.081   173.82
2030.77    0.068   173.18
2030.87    0.055   172.25
2030.97    0.041   170.69
2031.07    0.026   167.38
2031.17    0.011   154.93
2031.27    0.007    31.40
2031.37    0.021     6.21
2031.47    0.037     1.71
2031.57    0.051   359.83
2031.67    0.065   358.78
2031.77    0.079   358.10
2031.87    0.091   357.61
2031.97    0.103   357.23
2032.07    0.114   356.93
2032.17    0.125   356.68
2032.27    0.134   356.47
2032.37    0.143   356.29
2032.47    0.152   356.13
2032.57    0.159   355.98
2032.67    0.166   355.85
2032.77    0.173   355.72
2032.87    0.179   355.61
2032.97    0.184   355.50
2033.07    0.190   355.40

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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 15:24:32