Double Star Calculator - Orbit

Orbital Elements for B1935AB

WDS:	B1935AB	WDS ID/Discoverer
P:	21.210	Orbital period (years)
a:	0.2344	Semi-major axis (arcseconds)
i:	157.2	Inclination (degrees)
Ω:	60.5	Longitude of ascending node (degrees)
T:	2023.340	Epoch of periastron passage (year)
e:	0.491	Eccentricity
ω:	132.3	Longitude of periastron (degrees)
Start-Year:	2014.395	Year
End-Year:	2035.605	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for B1935AB
Position:	042128.80-205454.2	Epoch-2000 right ascension and declination
WDS-ID:	04215-2055	WDS designation
Discoverer Code:	B1935AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	27701	HD catalog number
Hipparcos number:	20342	Hipparcos catalog number
V1:	8.91	Magnitude of the primary
V2:	10.15	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2024	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:	Doc2025b	Reference

Double Star Orbit for B1935AB

WDS 6th Orbit including measures of B1935AB

-- 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 B1935AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.204   178.41
--------------------------
2014.39    0.334    94.82
2014.49    0.334    94.15
2014.59    0.333    93.48
2014.69    0.332    92.80
2014.79    0.332    92.12
2014.89    0.331    91.44
2014.99    0.330    90.76
2015.09    0.330    90.07
2015.19    0.329    89.38
2015.29    0.328    88.68
2015.39    0.327    87.99
2015.49    0.326    87.29
2015.59    0.325    86.58
2015.69    0.324    85.87
2015.79    0.323    85.15
2015.89    0.322    84.43
2015.99    0.321    83.71
2016.09    0.319    82.98
2016.19    0.318    82.24
2016.29    0.317    81.50
2016.39    0.315    80.75
2016.49    0.314    79.99
2016.59    0.312    79.23
2016.69    0.311    78.45
2016.79    0.309    77.67
2016.89    0.307    76.89
2016.99    0.306    76.09
2017.09    0.304    75.28
2017.19    0.302    74.46
2017.29    0.300    73.64
2017.39    0.298    72.80
2017.49    0.296    71.95
2017.59    0.294    71.09
2017.69    0.291    70.21
2017.79    0.289    69.32
2017.89    0.287    68.42
2017.99    0.284    67.50
2018.09    0.282    66.57
2018.19    0.280    65.62
2018.29    0.277    64.65
2018.39    0.274    63.67
2018.49    0.272    62.66
2018.59    0.269    61.63
2018.69    0.266    60.59
2018.79    0.263    59.52
2018.89    0.260    58.42
2018.99    0.257    57.30
2019.09    0.254    56.15
2019.19    0.251    54.97
2019.29    0.247    53.77
2019.39    0.244    52.52
2019.49    0.241    51.25
2019.59    0.237    49.94
2019.69    0.234    48.58
2019.79    0.230    47.19
2019.89    0.226    45.75
2019.99    0.222    44.26
2020.09    0.219    42.72
2020.19    0.215    41.12
2020.29    0.211    39.47
2020.39    0.207    37.75
2020.49    0.203    35.96
2020.59    0.198    34.10
2020.69    0.194    32.15
2020.79    0.190    30.12
2020.89    0.186    28.00
2020.99    0.181    25.77
2021.09    0.177    23.44
2021.19    0.173    20.99
2021.29    0.168    18.41
2021.39    0.164    15.69
2021.49    0.159    12.82
2021.59    0.155     9.79
2021.69    0.151     6.58
2021.79    0.147     3.20
2021.89    0.142   359.61
2021.99    0.138   355.81
2022.09    0.135   351.79
2022.19    0.131   347.55
2022.29    0.128   343.07
2022.39    0.125   338.36
2022.49    0.122   333.42
2022.59    0.119   328.26
2022.69    0.117   322.90
2022.79    0.116   317.37
2022.89    0.114   311.70
2022.99    0.114   305.93
2023.09    0.113   300.10
2023.19    0.113   294.26
2023.29    0.114   288.46
2023.39    0.115   282.74
2023.49    0.116   277.12
2023.59    0.118   271.65
2023.69    0.120   266.34
2023.79    0.122   261.20
2023.89    0.124   256.26
2023.99    0.127   251.50
2024.09    0.129   246.94
2024.19    0.132   242.57
2024.29    0.135   238.38
2024.39    0.138   234.37
2024.49    0.141   230.53
2024.59    0.144   226.86
2024.69    0.147   223.33
2024.79    0.150   219.96
2024.89    0.154   216.72
2024.99    0.157   213.61
2025.09    0.160   210.62
2025.19    0.163   207.75
2025.29    0.166   204.99
2025.39    0.169   202.34
2025.49    0.173   199.78
2025.59    0.176   197.31
2025.69    0.179   194.93
2025.79    0.182   192.63
2025.89    0.185   190.41
2025.99    0.188   188.26
2026.09    0.191   186.19
2026.19    0.194   184.17
2026.29    0.198   182.22
2026.39    0.201   180.33
2026.49    0.204   178.50
2026.59    0.207   176.72
2026.69    0.209   174.99
2026.79    0.212   173.30
2026.89    0.215   171.67
2026.99    0.218   170.07
2027.09    0.221   168.52
2027.19    0.224   167.01
2027.29    0.227   165.53
2027.39    0.230   164.09
2027.49    0.232   162.69
2027.59    0.235   161.32
2027.69    0.238   159.98
2027.79    0.240   158.67
2027.89    0.243   157.38
2027.99    0.246   156.13
2028.09    0.248   154.90
2028.19    0.251   153.70
2028.29    0.253   152.52
2028.39    0.256   151.36
2028.49    0.258   150.22
2028.59    0.261   149.11
2028.69    0.263   148.02
2028.79    0.265   146.94
2028.89    0.268   145.89
2028.99    0.270   144.85
2029.09    0.272   143.83
2029.19    0.274   142.82
2029.29    0.276   141.84
2029.39    0.278   140.86
2029.49    0.281   139.90
2029.59    0.283   138.96
2029.69    0.285   138.03
2029.79    0.287   137.11
2029.89    0.289   136.21
2029.99    0.290   135.31
2030.09    0.292   134.43
2030.19    0.294   133.56
2030.29    0.296   132.70
2030.39    0.298   131.85
2030.49    0.299   131.01
2030.59    0.301   130.18
2030.69    0.303   129.36
2030.79    0.304   128.55
2030.89    0.306   127.74
2030.99    0.308   126.95
2031.09    0.309   126.16
2031.19    0.310   125.38
2031.29    0.312   124.60
2031.39    0.313   123.84
2031.49    0.315   123.08
2031.59    0.316   122.32
2031.69    0.317   121.58
2031.79    0.318   120.83
2031.89    0.320   120.10
2031.99    0.321   119.37
2032.09    0.322   118.64
2032.19    0.323   117.92
2032.29    0.324   117.20
2032.39    0.325   116.49
2032.49    0.326   115.78
2032.59    0.327   115.08
2032.69    0.328   114.38
2032.79    0.328   113.68
2032.89    0.329   112.99
2032.99    0.330   112.30
2033.09    0.331   111.62
2033.19    0.331   110.93
2033.29    0.332   110.25
2033.39    0.332   109.57
2033.49    0.333   108.89
2033.59    0.333   108.22
2033.69    0.334   107.55
2033.79    0.334   106.88
2033.89    0.335   106.21
2033.99    0.335   105.54
2034.09    0.335   104.87
2034.19    0.335   104.21
2034.29    0.336   103.54
2034.39    0.336   102.88
2034.49    0.336   102.21
2034.59    0.336   101.55
2034.69    0.336   100.89
2034.79    0.336   100.22
2034.89    0.336    99.56
2034.99    0.336    98.89
2035.09    0.336    98.23
2035.19    0.335    97.56
2035.29    0.335    96.90
2035.39    0.335    96.23
2035.49    0.334    95.56
2035.59    0.334    94.89

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 15:21:44