Double Star Calculator - Orbit

Orbital Elements for MCA34AB

WDS:	MCA34AB	WDS ID/Discoverer
P:	15.119	Orbital period (years)
a:	0.111	Semi-major axis (arcseconds)
i:	76.3	Inclination (degrees)
Ω:	203.1	Longitude of ascending node (degrees)
T:	2019.163	Epoch of periastron passage (year)
e:	0.313	Eccentricity
ω:	22.6	Longitude of periastron (degrees)
Start-Year:	2017.4405	Year
End-Year:	2032.5595	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for MCA34AB
Position:	094725.99+113405.4	Epoch-2000 right ascension and declination
WDS-ID:	09474+1134	WDS designation
Discoverer Code:	MCA34AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	84722	HD catalog number
Hipparcos number:	48029	Hipparcos catalog number
V1:	6.4	Magnitude of the primary
V2:	6.9	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	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:	USN2021a	Reference

Double Star Orbit for MCA34AB

WDS 6th Orbit including measures of MCA34AB

-- 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 MCA34AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.138    27.94
--------------------------
2017.44    0.061   187.41
2017.54    0.064   189.09
2017.64    0.066   190.65
2017.74    0.069   192.09
2017.84    0.071   193.45
2017.94    0.073   194.73
2018.04    0.074   195.95
2018.14    0.076   197.12
2018.24    0.077   198.25
2018.34    0.078   199.36
2018.44    0.078   200.45
2018.54    0.078   201.53
2018.64    0.078   202.61
2018.74    0.077   203.70
2018.84    0.076   204.82
2018.94    0.075   205.97
2019.04    0.073   207.17
2019.14    0.071   208.44
2019.24    0.069   209.78
2019.34    0.066   211.23
2019.44    0.063   212.81
2019.54    0.060   214.55
2019.64    0.056   216.51
2019.74    0.053   218.74
2019.84    0.049   221.33
2019.94    0.045   224.38
2020.04    0.040   228.03
2020.14    0.036   232.51
2020.24    0.032   238.10
2020.34    0.029   245.18
2020.44    0.026   254.20
2020.54    0.023   265.51
2020.64    0.021   279.00
2020.74    0.021   293.67
2020.84    0.022   307.83
2020.94    0.024   320.12
2021.04    0.027   330.06
2021.14    0.031   337.88
2021.24    0.035   344.00
2021.34    0.039   348.85
2021.44    0.043   352.74
2021.54    0.048   355.93
2021.64    0.052   358.59
2021.74    0.056     0.83
2021.84    0.061     2.75
2021.94    0.065     4.42
2022.04    0.069     5.89
2022.14    0.073     7.19
2022.24    0.077     8.36
2022.34    0.081     9.41
2022.44    0.085    10.36
2022.54    0.089    11.24
2022.64    0.092    12.05
2022.74    0.096    12.79
2022.84    0.099    13.49
2022.94    0.102    14.14
2023.04    0.105    14.76
2023.14    0.108    15.34
2023.24    0.111    15.89
2023.34    0.114    16.41
2023.44    0.116    16.91
2023.54    0.119    17.39
2023.64    0.121    17.85
2023.74    0.123    18.29
2023.84    0.125    18.71
2023.94    0.127    19.13
2024.04    0.129    19.53
2024.14    0.131    19.92
2024.24    0.132    20.30
2024.34    0.134    20.67
2024.44    0.135    21.04
2024.54    0.136    21.39
2024.64    0.138    21.75
2024.74    0.139    22.09
2024.84    0.139    22.43
2024.94    0.140    22.77
2025.04    0.141    23.11
2025.14    0.141    23.44
2025.24    0.142    23.77
2025.34    0.142    24.09
2025.44    0.142    24.42
2025.54    0.142    24.75
2025.64    0.142    25.07
2025.74    0.142    25.40
2025.84    0.142    25.73
2025.94    0.142    26.05
2026.04    0.141    26.38
2026.14    0.141    26.72
2026.24    0.140    27.05
2026.34    0.139    27.39
2026.44    0.138    27.74
2026.54    0.137    28.08
2026.64    0.136    28.44
2026.74    0.135    28.80
2026.84    0.134    29.16
2026.94    0.132    29.53
2027.04    0.131    29.91
2027.14    0.129    30.30
2027.24    0.128    30.70
2027.34    0.126    31.11
2027.44    0.124    31.54
2027.54    0.122    31.97
2027.64    0.120    32.42
2027.74    0.118    32.89
2027.84    0.116    33.37
2027.94    0.114    33.87
2028.04    0.111    34.39
2028.14    0.109    34.94
2028.24    0.106    35.51
2028.34    0.104    36.10
2028.44    0.101    36.73
2028.54    0.098    37.40
2028.64    0.096    38.10
2028.74    0.093    38.84
2028.84    0.090    39.64
2028.94    0.087    40.49
2029.04    0.084    41.40
2029.14    0.081    42.37
2029.24    0.077    43.43
2029.34    0.074    44.58
2029.44    0.071    45.84
2029.54    0.068    47.21
2029.64    0.064    48.73
2029.74    0.061    50.41
2029.84    0.058    52.29
2029.94    0.054    54.39
2030.04    0.051    56.77
2030.14    0.048    59.48
2030.24    0.045    62.59
2030.34    0.041    66.16
2030.44    0.038    70.31
2030.54    0.036    75.12
2030.64    0.033    80.71
2030.74    0.031    87.17
2030.84    0.029    94.52
2030.94    0.028   102.71
2031.04    0.027   111.54
2031.14    0.027   120.66
2031.24    0.027   129.64
2031.34    0.029   138.11
2031.44    0.030   145.81
2031.54    0.032   152.63
2031.64    0.035   158.57
2031.74    0.037   163.70
2031.84    0.040   168.13
2031.94    0.043   171.97
2032.04    0.046   175.31
2032.14    0.049   178.23
2032.24    0.052   180.82
2032.34    0.055   183.12
2032.44    0.058   185.19
2032.54    0.061   187.07

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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 16:21:00