Double Star Calculator - Orbit

Orbital Elements for STFA46AB

WDS:	STFA46AB	WDS ID/Discoverer
P:	13512.700	Orbital period (years)
a:	35.242	Semi-major axis (arcseconds)
i:	135.44	Inclination (degrees)
Ω:	313.44	Longitude of ascending node (degrees)
T:	153.250	Epoch of periastron passage (year)
e:	0.863	Eccentricity
ω:	26.6	Longitude of periastron (degrees)
Start-Year:	-4731.35	Year
End-Year:	8781.35	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STFA46AB
Position:	194149.09+503131.6	Epoch-2000 right ascension and declination
WDS-ID:	19418+5032	WDS designation
Discoverer Code:	STFA46AB	Discover designation and components
ADS number:	12815	Aitken Double Star catalog
HD number:	186408	HD catalog number
Hipparcos number:	96895	Hipparcos catalog number
V1:	6.00	Magnitude of the primary
V2:	6.23	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	1998	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Mrc1999	Reference

Double Star Orbit for STFA46AB

WDS 6th Orbit including measures of STFA46AB

-- 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 STFA46AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50   39.881   133.14
--------------------------
-4731.35   57.258   107.67
-4631.35   56.794   107.31
-4531.35   56.311   106.93
-4431.35   55.807   106.55
-4331.35   55.282   106.17
-4231.35   54.736   105.77
-4131.35   54.170   105.37
-4031.35   53.582   104.96
-3931.35   52.972   104.54
-3831.35   52.340   104.11
-3731.35   51.686   103.67
-3631.35   51.010   103.22
-3531.35   50.310   102.76
-3431.35   49.588   102.28
-3331.35   48.842   101.79
-3231.35   48.071   101.28
-3131.35   47.276   100.76
-3031.35   46.456   100.21
-2931.35   45.610    99.65
-2831.35   44.739    99.07
-2731.35   43.840    98.46
-2631.35   42.914    97.83
-2531.35   41.960    97.17
-2431.35   40.977    96.47
-2331.35   39.965    95.75
-2231.35   38.922    94.98
-2131.35   37.848    94.17
-2031.35   36.741    93.32
-1931.35   35.600    92.41
-1831.35   34.426    91.43
-1731.35   33.215    90.39
-1631.35   31.967    89.27
-1531.35   30.680    88.06
-1431.35   29.353    86.74
-1331.35   27.984    85.29
-1231.35   26.571    83.68
-1131.35   25.113    81.90
-1031.35   23.608    79.89
-931.35   22.054    77.60
-831.35   20.450    74.96
-731.35   18.794    71.87
-631.35   17.088    68.16
-531.35   15.335    63.62
-431.35   13.543    57.88
-331.35   11.731    50.39
-231.35    9.939    40.16
-131.35    8.245    25.59
-31.35    6.782     4.14
68.65    5.618   332.70
168.65    4.401   284.70
268.65    4.742   219.98
368.65    7.429   185.12
468.65   10.474   169.83
568.65   13.365   161.35
668.65   16.043   155.81
768.65   18.525   151.81
868.65   20.834   148.72
968.65   22.993   146.24
1068.65   25.021   144.17
1168.65   26.932   142.41
1268.65   28.738   140.87
1368.65   30.451   139.51
1468.65   32.079   138.29
1568.65   33.629   137.18
1668.65   35.107   136.18
1768.65   36.518   135.25
1868.65   37.868   134.39
1968.65   39.159   133.58
2068.65   40.396   132.83
2168.65   41.581   132.12
2268.65   42.717   131.45
2368.65   43.808   130.81
2468.65   44.854   130.21
2568.65   45.858   129.63
2668.65   46.822   129.07
2768.65   47.747   128.54
2868.65   48.635   128.03
2968.65   49.488   127.53
3068.65   50.306   127.06
3168.65   51.091   126.59
3268.65   51.843   126.14
3368.65   52.564   125.71
3468.65   53.255   125.28
3568.65   53.916   124.87
3668.65   54.548   124.46
3768.65   55.152   124.06
3868.65   55.729   123.68
3968.65   56.279   123.30
4068.65   56.803   122.92
4168.65   57.301   122.56
4268.65   57.775   122.20
4368.65   58.223   121.85
4468.65   58.648   121.50
4568.65   59.049   121.15
4668.65   59.426   120.81
4768.65   59.780   120.48
4868.65   60.112   120.15
4968.65   60.422   119.82
5068.65   60.709   119.49
5168.65   60.975   119.17
5268.65   61.219   118.85
5368.65   61.442   118.54
5468.65   61.644   118.22
5568.65   61.826   117.91
5668.65   61.986   117.60
5768.65   62.127   117.29
5868.65   62.247   116.98
5968.65   62.347   116.67
6068.65   62.427   116.37
6168.65   62.488   116.06
6268.65   62.529   115.76
6368.65   62.550   115.45
6468.65   62.552   115.15
6568.65   62.535   114.84
6668.65   62.498   114.54
6768.65   62.443   114.23
6868.65   62.368   113.93
6968.65   62.274   113.62
7068.65   62.161   113.31
7168.65   62.029   113.01
7268.65   61.878   112.70
7368.65   61.708   112.38
7468.65   61.519   112.07
7568.65   61.311   111.75
7668.65   61.084   111.44
7768.65   60.837   111.12
7868.65   60.572   110.79
7968.65   60.288   110.47
8068.65   59.985   110.14
8168.65   59.662   109.80
8268.65   59.320   109.47
8368.65   58.958   109.13
8468.65   58.577   108.78
8568.65   58.176   108.43
8668.65   57.755   108.08
8768.65   57.315   107.72

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 18:07:33