Double Star Calculator - Orbit

Orbital Elements for BUG7

WDS:	BUG7	WDS ID/Discoverer
P:	12.300	Orbital period (years)
a:	0.1626	Semi-major axis (arcseconds)
i:	65.2	Inclination (degrees)
Ω:	34.33	Longitude of ascending node (degrees)
T:	2020.349	Epoch of periastron passage (year)
e:	0.27	Eccentricity
ω:	97.5	Longitude of periastron (degrees)
Start-Year:	2018.85	Year
End-Year:	2031.15	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BUG7
Position:	042348.58-041403.5	Epoch-2000 right ascension and declination
WDS-ID:	04238-0414	WDS designation
Discoverer Code:	BUG7	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	15.80	Magnitude of the primary
V2:	16.33	Magnitude of the secondary
Equinox:		Equinox
Date:	2010	Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Dup2017	Reference

Double Star Orbit for BUG7

WDS 6th Orbit including measures of BUG7

-- 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 BUG7

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.090   321.78
--------------------------
2018.85    0.127    46.13
2018.95    0.121    48.16
2019.05    0.115    50.40
2019.15    0.109    52.89
2019.25    0.102    55.69
2019.35    0.096    58.89
2019.45    0.089    62.58
2019.55    0.082    66.91
2019.65    0.075    72.06
2019.75    0.068    78.24
2019.85    0.062    85.71
2019.95    0.057    94.69
2020.05    0.053   105.26
2020.15    0.050   117.16
2020.25    0.050   129.67
2020.35    0.052   141.82
2020.45    0.055   152.80
2020.55    0.060   162.23
2020.65    0.066   170.10
2020.75    0.073   176.62
2020.85    0.079   182.05
2020.95    0.086   186.61
2021.05    0.093   190.50
2021.15    0.100   193.86
2021.25    0.106   196.81
2021.35    0.112   199.43
2021.45    0.118   201.78
2021.55    0.123   203.93
2021.65    0.128   205.91
2021.75    0.132   207.76
2021.85    0.136   209.49
2021.95    0.140   211.12
2022.05    0.143   212.69
2022.15    0.145   214.19
2022.25    0.148   215.65
2022.35    0.149   217.07
2022.45    0.151   218.46
2022.55    0.151   219.83
2022.65    0.152   221.18
2022.75    0.152   222.53
2022.85    0.152   223.88
2022.95    0.152   225.24
2023.05    0.151   226.61
2023.15    0.150   227.99
2023.25    0.148   229.39
2023.35    0.147   230.83
2023.45    0.145   232.29
2023.55    0.143   233.80
2023.65    0.141   235.35
2023.75    0.139   236.95
2023.85    0.136   238.61
2023.95    0.133   240.33
2024.05    0.131   242.12
2024.15    0.128   244.00
2024.25    0.125   245.96
2024.35    0.122   248.01
2024.45    0.119   250.17
2024.55    0.116   252.45
2024.65    0.113   254.84
2024.75    0.110   257.37
2024.85    0.107   260.04
2024.95    0.104   262.85
2025.05    0.101   265.83
2025.15    0.099   268.96
2025.25    0.096   272.25
2025.35    0.094   275.71
2025.45    0.092   279.32
2025.55    0.090   283.08
2025.65    0.089   286.98
2025.75    0.088   290.99
2025.85    0.087   295.09
2025.95    0.086   299.26
2026.05    0.086   303.45
2026.15    0.087   307.63
2026.25    0.087   311.78
2026.35    0.088   315.86
2026.45    0.089   319.83
2026.55    0.091   323.69
2026.65    0.093   327.41
2026.75    0.095   330.97
2026.85    0.097   334.37
2026.95    0.100   337.61
2027.05    0.102   340.68
2027.15    0.105   343.59
2027.25    0.108   346.34
2027.35    0.111   348.95
2027.45    0.114   351.42
2027.55    0.117   353.75
2027.65    0.121   355.96
2027.75    0.124   358.06
2027.85    0.127     0.05
2027.95    0.130     1.94
2028.05    0.133     3.75
2028.15    0.136     5.47
2028.25    0.139     7.12
2028.35    0.142     8.70
2028.45    0.145    10.23
2028.55    0.147    11.69
2028.65    0.150    13.11
2028.75    0.152    14.48
2028.85    0.154    15.81
2028.95    0.156    17.11
2029.05    0.158    18.37
2029.15    0.160    19.61
2029.25    0.161    20.83
2029.35    0.162    22.03
2029.45    0.163    23.22
2029.55    0.163    24.39
2029.65    0.164    25.56
2029.75    0.164    26.72
2029.85    0.163    27.89
2029.95    0.163    29.07
2030.05    0.162    30.25
2030.15    0.161    31.45
2030.25    0.159    32.68
2030.35    0.157    33.93
2030.45    0.155    35.22
2030.55    0.152    36.55
2030.65    0.149    37.93
2030.75    0.145    39.38
2030.85    0.141    40.91
2030.95    0.137    42.53
2031.05    0.132    44.26
2031.15    0.127    46.13

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 15:22:48