Double Star Calculator - Orbit

Orbital Elements for SEI105AB

WDS:	SEI105AB	WDS ID/Discoverer
P:	21124.000	Orbital period (years)
a:	31.5	Semi-major axis (arcseconds)
i:	74.6	Inclination (degrees)
Ω:	8.6	Longitude of ascending node (degrees)
T:	16173.400	Epoch of periastron passage (year)
e:	0.56	Eccentricity
ω:	-1.0	Longitude of periastron (degrees)
Start-Year:	-8537.0	Year
End-Year:	12587.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for SEI105AB
Position:	051317.55+372015.5	Epoch-2000 right ascension and declination
WDS-ID:	05133+3720	WDS designation
Discoverer Code:	SEI105AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	33632	HD catalog number
Hipparcos number:	24332	Hipparcos catalog number
V1:	6.48	Magnitude of the primary
V2:	11.0	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:		Flags
Ephemerides:		Ephemerides
Code:	Bdt2021b	Reference

Double Star Orbit for SEI105AB

WDS 6th Orbit including measures of SEI105AB

-- 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 SEI105AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   41.616   182.15
--------------------------
-8537.00   20.970   207.61
-8437.00   20.111   208.49
-8337.00   19.241   209.45
-8237.00   18.360   210.50
-8137.00   17.468   211.66
-8037.00   16.567   212.95
-7937.00   15.658   214.38
-7837.00   14.742   215.99
-7737.00   13.823   217.82
-7637.00   12.903   219.90
-7537.00   11.985   222.31
-7437.00   11.075   225.11
-7337.00   10.179   228.42
-7237.00    9.307   232.34
-7137.00    8.472   237.07
-7037.00    7.691   242.78
-6937.00    6.987   249.72
-6837.00    6.393   258.08
-6737.00    5.944   267.91
-6637.00    5.681   278.99
-6537.00    5.629   290.71
-6437.00    5.794   302.18
-6337.00    6.154   312.67
-6237.00    6.672   321.76
-6137.00    7.306   329.41
-6037.00    8.014   335.78
-5937.00    8.765   341.08
-5837.00    9.531   345.53
-5737.00   10.288   349.32
-5637.00   11.015   352.60
-5537.00   11.693   355.49
-5437.00   12.304   358.07
-5337.00   12.833     0.43
-5237.00   13.264     2.61
-5137.00   13.585     4.67
-5037.00   13.786     6.65
-4937.00   13.861     8.60
-4837.00   13.808    10.54
-4737.00   13.630    12.51
-4637.00   13.333    14.56
-4537.00   12.926    16.71
-4437.00   12.422    19.03
-4337.00   11.836    21.56
-4237.00   11.183    24.36
-4137.00   10.481    27.54
-4037.00    9.747    31.18
-3937.00    9.001    35.42
-3837.00    8.265    40.42
-3737.00    7.564    46.38
-3637.00    6.927    53.49
-3537.00    6.390    61.92
-3437.00    5.992    71.68
-3337.00    5.768    82.50
-3237.00    5.745    93.80
-3137.00    5.926   104.79
-3037.00    6.294   114.81
-2937.00    6.816   123.51
-2837.00    7.457   130.85
-2737.00    8.186   136.95
-2637.00    8.977   142.02
-2537.00    9.811   146.25
-2437.00   10.674   149.80
-2337.00   11.557   152.82
-2237.00   12.451   155.40
-2137.00   13.351   157.64
-2037.00   14.253   159.60
-1937.00   15.152   161.32
-1837.00   16.047   162.85
-1737.00   16.937   164.22
-1637.00   17.818   165.45
-1537.00   18.690   166.57
-1437.00   19.553   167.58
-1337.00   20.404   168.52
-1237.00   21.245   169.37
-1137.00   22.073   170.17
-1037.00   22.890   170.90
-937.00   23.694   171.59
-837.00   24.485   172.23
-737.00   25.263   172.83
-637.00   26.029   173.40
-537.00   26.781   173.93
-437.00   27.520   174.44
-337.00   28.246   174.92
-237.00   28.959   175.37
-137.00   29.658   175.80
-37.00   30.344   176.22
63.00   31.017   176.61
163.00   31.677   176.99
263.00   32.323   177.35
363.00   32.956   177.70
463.00   33.577   178.04
563.00   34.184   178.36
663.00   34.778   178.68
763.00   35.359   178.98
863.00   35.928   179.27
963.00   36.483   179.56
1063.00   37.026   179.83
1163.00   37.556   180.10
1263.00   38.074   180.36
1363.00   38.579   180.61
1463.00   39.071   180.86
1563.00   39.551   181.10
1663.00   40.019   181.33
1763.00   40.475   181.56
1863.00   40.918   181.79
1963.00   41.349   182.01
2063.00   41.768   182.22
2163.00   42.174   182.44
2263.00   42.569   182.64
2363.00   42.952   182.85
2463.00   43.323   183.05
2563.00   43.682   183.24
2663.00   44.029   183.44
2763.00   44.365   183.63
2863.00   44.689   183.81
2963.00   45.001   184.00
3063.00   45.301   184.18
3163.00   45.590   184.36
3263.00   45.868   184.54
3363.00   46.134   184.72
3463.00   46.388   184.89
3563.00   46.631   185.06
3663.00   46.862   185.23
3763.00   47.083   185.40
3863.00   47.292   185.57
3963.00   47.489   185.73
4063.00   47.675   185.90
4163.00   47.850   186.06
4263.00   48.014   186.22
4363.00   48.167   186.38
4463.00   48.308   186.54
4563.00   48.438   186.70
4663.00   48.557   186.86
4763.00   48.665   187.02
4863.00   48.762   187.17
4963.00   48.847   187.33
5063.00   48.922   187.49
5163.00   48.985   187.64
5263.00   49.038   187.80
5363.00   49.079   187.95
5463.00   49.109   188.11
5563.00   49.128   188.26
5663.00   49.136   188.41
5763.00   49.133   188.57
5863.00   49.118   188.72
5963.00   49.093   188.88
6063.00   49.056   189.03
6163.00   49.009   189.19
6263.00   48.950   189.34
6363.00   48.880   189.50
6463.00   48.799   189.65
6563.00   48.707   189.81
6663.00   48.603   189.97
6763.00   48.489   190.12
6863.00   48.363   190.28
6963.00   48.226   190.44
7063.00   48.077   190.60
7163.00   47.917   190.76
7263.00   47.746   190.93
7363.00   47.564   191.09
7463.00   47.370   191.26
7563.00   47.165   191.42
7663.00   46.948   191.59
7763.00   46.720   191.76
7863.00   46.481   191.93
7963.00   46.229   192.10
8063.00   45.967   192.28
8163.00   45.692   192.46
8263.00   45.406   192.64
8363.00   45.108   192.82
8463.00   44.798   193.00
8563.00   44.476   193.19
8663.00   44.143   193.38
8763.00   43.797   193.57
8863.00   43.440   193.77
8963.00   43.070   193.96
9063.00   42.689   194.17
9163.00   42.295   194.37
9263.00   41.889   194.58
9363.00   41.470   194.80
9463.00   41.039   195.02
9563.00   40.596   195.24
9663.00   40.140   195.47
9763.00   39.672   195.70
9863.00   39.191   195.94
9963.00   38.697   196.19
10063.00   38.190   196.44
10163.00   37.671   196.70
10263.00   37.138   196.96
10363.00   36.593   197.24
10463.00   36.034   197.52
10563.00   35.462   197.81
10663.00   34.877   198.11
10763.00   34.279   198.42
10863.00   33.667   198.74
10963.00   33.042   199.08
11063.00   32.403   199.42
11163.00   31.750   199.79
11263.00   31.084   200.16
11363.00   30.404   200.56
11463.00   29.710   200.97
11563.00   29.003   201.40
11663.00   28.281   201.85
11763.00   27.546   202.33
11863.00   26.797   202.84
11963.00   26.035   203.37
12063.00   25.258   203.93
12163.00   24.468   204.54
12263.00   23.664   205.18
12363.00   22.847   205.87
12463.00   22.017   206.61
12563.00   21.174   207.40

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 15:35:08