Double Star Calculator - Orbit

Orbital Elements for BU883AB

WDS:	BU883AB	WDS ID/Discoverer
P:	16.280	Orbital period (years)
a:	0.188	Semi-major axis (arcseconds)
i:	17.0	Inclination (degrees)
Ω:	147.0	Longitude of ascending node (degrees)
T:	1988.390	Epoch of periastron passage (year)
e:	0.46	Eccentricity
ω:	77.0	Longitude of periastron (degrees)
Start-Year:	2016.86	Year
End-Year:	2033.14	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU883AB
Position:	045112.48+110405.0	Epoch-2000 right ascension and declination
WDS-ID:	04512+1104	WDS designation
Discoverer Code:	BU883AB	Discover designation and components
ADS number:	3475	Aitken Double Star catalog
HD number:	30810	HD catalog number
Hipparcos number:	22550	Hipparcos catalog number
V1:	7.75	Magnitude of the primary
V2:	7.50	Magnitude of the secondary
Equinox:	2000	Equinox
Date:		Date of last observation
Orbit grade:	1	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 BU883AB

WDS 6th Orbit including measures of BU883AB

-- 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 BU883AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.247    17.63
--------------------------
2016.86    0.216    87.89
2016.96    0.214    89.32
2017.06    0.212    90.79
2017.16    0.209    92.28
2017.26    0.207    93.81
2017.36    0.204    95.38
2017.46    0.202    96.99
2017.56    0.199    98.64
2017.66    0.196   100.34
2017.76    0.194   102.08
2017.86    0.191   103.88
2017.96    0.188   105.73
2018.06    0.185   107.64
2018.16    0.182   109.61
2018.26    0.179   111.65
2018.36    0.176   113.76
2018.46    0.172   115.95
2018.56    0.169   118.23
2018.66    0.166   120.59
2018.76    0.163   123.05
2018.86    0.159   125.62
2018.96    0.156   128.30
2019.06    0.152   131.10
2019.16    0.149   134.04
2019.26    0.145   137.13
2019.36    0.141   140.37
2019.46    0.138   143.78
2019.56    0.134   147.38
2019.66    0.130   151.19
2019.76    0.127   155.21
2019.86    0.123   159.47
2019.96    0.120   163.98
2020.06    0.116   168.76
2020.16    0.113   173.82
2020.26    0.110   179.18
2020.36    0.107   184.84
2020.46    0.104   190.80
2020.56    0.102   197.04
2020.66    0.100   203.54
2020.76    0.099   210.26
2020.86    0.098   217.14
2020.96    0.097   224.13
2021.06    0.097   231.14
2021.16    0.098   238.10
2021.26    0.099   244.93
2021.36    0.101   251.58
2021.46    0.103   257.98
2021.56    0.105   264.10
2021.66    0.108   269.93
2021.76    0.111   275.44
2021.86    0.115   280.63
2021.96    0.118   285.52
2022.06    0.122   290.13
2022.16    0.126   294.45
2022.26    0.130   298.52
2022.36    0.134   302.35
2022.46    0.138   305.96
2022.56    0.141   309.37
2022.66    0.145   312.60
2022.76    0.149   315.66
2022.86    0.153   318.56
2022.96    0.157   321.31
2023.06    0.161   323.94
2023.16    0.165   326.45
2023.26    0.168   328.85
2023.36    0.172   331.15
2023.46    0.175   333.35
2023.56    0.179   335.47
2023.66    0.182   337.51
2023.76    0.185   339.48
2023.86    0.189   341.38
2023.96    0.192   343.22
2024.06    0.195   345.00
2024.16    0.198   346.72
2024.26    0.201   348.39
2024.36    0.203   350.02
2024.46    0.206   351.60
2024.56    0.209   353.14
2024.66    0.211   354.65
2024.76    0.214   356.11
2024.86    0.216   357.54
2024.96    0.219   358.94
2025.06    0.221     0.32
2025.16    0.223     1.66
2025.26    0.226     2.97
2025.36    0.228     4.27
2025.46    0.230     5.53
2025.56    0.232     6.78
2025.66    0.234     8.01
2025.76    0.236     9.21
2025.86    0.237    10.40
2025.96    0.239    11.57
2026.06    0.241    12.72
2026.16    0.242    13.86
2026.26    0.244    14.98
2026.36    0.245    16.09
2026.46    0.247    17.19
2026.56    0.248    18.28
2026.66    0.249    19.35
2026.76    0.251    20.41
2026.86    0.252    21.47
2026.96    0.253    22.51
2027.06    0.254    23.54
2027.16    0.255    24.57
2027.26    0.256    25.59
2027.36    0.257    26.60
2027.46    0.257    27.60
2027.56    0.258    28.60
2027.66    0.259    29.59
2027.76    0.260    30.58
2027.86    0.260    31.56
2027.96    0.261    32.54
2028.06    0.261    33.52
2028.16    0.262    34.49
2028.26    0.262    35.46
2028.36    0.262    36.42
2028.46    0.263    37.38
2028.56    0.263    38.35
2028.66    0.263    39.31
2028.76    0.263    40.27
2028.86    0.263    41.22
2028.96    0.263    42.18
2029.06    0.263    43.14
2029.16    0.263    44.10
2029.26    0.263    45.06
2029.36    0.263    46.02
2029.46    0.262    46.98
2029.56    0.262    47.95
2029.66    0.262    48.91
2029.76    0.261    49.88
2029.86    0.261    50.86
2029.96    0.260    51.83
2030.06    0.260    52.81
2030.16    0.259    53.80
2030.26    0.259    54.79
2030.36    0.258    55.79
2030.46    0.257    56.79
2030.56    0.256    57.80
2030.66    0.255    58.81
2030.76    0.254    59.83
2030.86    0.253    60.86
2030.96    0.252    61.90
2031.06    0.251    62.94
2031.16    0.250    64.00
2031.26    0.249    65.06
2031.36    0.248    66.14
2031.46    0.246    67.23
2031.56    0.245    68.33
2031.66    0.244    69.44
2031.76    0.242    70.56
2031.86    0.241    71.70
2031.96    0.239    72.85
2032.06    0.238    74.02
2032.16    0.236    75.20
2032.26    0.234    76.41
2032.36    0.232    77.63
2032.46    0.230    78.86
2032.56    0.229    80.12
2032.66    0.227    81.40
2032.76    0.225    82.71
2032.86    0.223    84.04
2032.96    0.220    85.39
2033.06    0.218    86.77

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 15:30:59