Double Star Calculator - Orbit

Orbital Elements for D19AB

WDS:	D19AB	WDS ID/Discoverer
P:	2858.000	Orbital period (years)
a:	2.95	Semi-major axis (arcseconds)
i:	100.0	Inclination (degrees)
Ω:	190.0	Longitude of ascending node (degrees)
T:	1903.000	Epoch of periastron passage (year)
e:	0.73	Eccentricity
ω:	162.0	Longitude of periastron (degrees)
Start-Year:	596.0	Year
End-Year:	3454.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for D19AB
Position:	190820.20+551950.0	Epoch-2000 right ascension and declination
WDS-ID:	19083+5520	WDS designation
Discoverer Code:	D19AB	Discover designation and components
ADS number:	12104	Aitken Double Star catalog
HD number:	179142	HD catalog number
Hipparcos number:	94000	Hipparcos catalog number
V1:	7.67	Magnitude of the primary
V2:	9.51	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2009	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:	Hrt2013c	Reference

Double Star Orbit for D19AB

WDS 6th Orbit including measures of D19AB

-- 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 D19AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.441   336.88
--------------------------
596.00    4.921   192.57
606.00    4.923   192.51
616.00    4.925   192.46
626.00    4.926   192.41
636.00    4.926   192.35
646.00    4.926   192.30
656.00    4.926   192.25
666.00    4.925   192.19
676.00    4.923   192.14
686.00    4.921   192.08
696.00    4.919   192.03
706.00    4.916   191.98
716.00    4.913   191.92
726.00    4.909   191.87
736.00    4.905   191.82
746.00    4.900   191.76
756.00    4.895   191.71
766.00    4.889   191.65
776.00    4.883   191.60
786.00    4.876   191.54
796.00    4.869   191.49
806.00    4.861   191.43
816.00    4.853   191.38
826.00    4.844   191.32
836.00    4.835   191.27
846.00    4.825   191.21
856.00    4.815   191.16
866.00    4.804   191.10
876.00    4.793   191.04
886.00    4.781   190.99
896.00    4.768   190.93
906.00    4.755   190.87
916.00    4.742   190.81
926.00    4.728   190.76
936.00    4.713   190.70
946.00    4.698   190.64
956.00    4.683   190.58
966.00    4.667   190.52
976.00    4.650   190.46
986.00    4.632   190.40
996.00    4.614   190.34
1006.00    4.596   190.28
1016.00    4.577   190.22
1026.00    4.557   190.15
1036.00    4.537   190.09
1046.00    4.516   190.03
1056.00    4.495   189.96
1066.00    4.473   189.90
1076.00    4.450   189.83
1086.00    4.427   189.77
1096.00    4.403   189.70
1106.00    4.378   189.63
1116.00    4.353   189.56
1126.00    4.327   189.50
1136.00    4.301   189.43
1146.00    4.273   189.35
1156.00    4.246   189.28
1166.00    4.217   189.21
1176.00    4.188   189.14
1186.00    4.158   189.06
1196.00    4.128   188.99
1206.00    4.096   188.91
1216.00    4.064   188.83
1226.00    4.031   188.75
1236.00    3.998   188.67
1246.00    3.964   188.59
1256.00    3.929   188.51
1266.00    3.893   188.42
1276.00    3.857   188.33
1286.00    3.819   188.25
1296.00    3.781   188.16
1306.00    3.742   188.06
1316.00    3.702   187.97
1326.00    3.662   187.87
1336.00    3.620   187.78
1346.00    3.578   187.67
1356.00    3.535   187.57
1366.00    3.491   187.47
1376.00    3.445   187.36
1386.00    3.399   187.25
1396.00    3.353   187.13
1406.00    3.305   187.02
1416.00    3.256   186.89
1426.00    3.206   186.77
1436.00    3.155   186.64
1446.00    3.103   186.51
1456.00    3.050   186.37
1466.00    2.996   186.23
1476.00    2.940   186.08
1486.00    2.884   185.93
1496.00    2.826   185.77
1506.00    2.768   185.60
1516.00    2.708   185.43
1526.00    2.646   185.25
1536.00    2.584   185.06
1546.00    2.520   184.86
1556.00    2.455   184.65
1566.00    2.388   184.42
1576.00    2.320   184.19
1586.00    2.251   183.94
1596.00    2.180   183.68
1606.00    2.107   183.39
1616.00    2.033   183.09
1626.00    1.957   182.76
1636.00    1.880   182.41
1646.00    1.801   182.02
1656.00    1.720   181.60
1666.00    1.637   181.14
1676.00    1.553   180.63
1686.00    1.466   180.06
1696.00    1.378   179.42
1706.00    1.287   178.68
1716.00    1.195   177.84
1726.00    1.100   176.85
1736.00    1.004   175.67
1746.00    0.906   174.24
1756.00    0.806   172.46
1766.00    0.704   170.17
1776.00    0.602   167.10
1786.00    0.500   162.78
1796.00    0.399   156.25
1806.00    0.305   145.53
1816.00    0.229   126.61
1826.00    0.194    95.97
1836.00    0.223    64.43
1846.00    0.296    44.33
1856.00    0.386    32.90
1866.00    0.480    25.89
1876.00    0.570    21.14
1886.00    0.652    17.66
1896.00    0.720    14.89
1906.00    0.773    12.56
1916.00    0.807    10.49
1926.00    0.824     8.54
1936.00    0.825     6.63
1946.00    0.810     4.69
1956.00    0.784     2.65
1966.00    0.748     0.43
1976.00    0.704   357.96
1986.00    0.655   355.15
1996.00    0.603   351.86
2006.00    0.549   347.93
2016.00    0.495   343.15
2026.00    0.443   337.21
2036.00    0.395   329.76
2046.00    0.354   320.42
2056.00    0.323   308.99
2066.00    0.307   295.78
2076.00    0.308   281.88
2086.00    0.325   268.75
2096.00    0.356   257.44
2106.00    0.399   248.25
2116.00    0.449   240.96
2126.00    0.504   235.20
2136.00    0.562   230.60
2146.00    0.623   226.88
2156.00    0.685   223.83
2166.00    0.748   221.29
2176.00    0.811   219.15
2186.00    0.875   217.31
2196.00    0.939   215.73
2206.00    1.002   214.35
2216.00    1.066   213.13
2226.00    1.129   212.05
2236.00    1.191   211.08
2246.00    1.254   210.21
2256.00    1.315   209.42
2266.00    1.376   208.70
2276.00    1.437   208.04
2286.00    1.497   207.44
2296.00    1.557   206.88
2306.00    1.616   206.36
2316.00    1.674   205.88
2326.00    1.732   205.43
2336.00    1.789   205.01
2346.00    1.846   204.62
2356.00    1.902   204.25
2366.00    1.957   203.90
2376.00    2.012   203.57
2386.00    2.066   203.26
2396.00    2.120   202.96
2406.00    2.173   202.68
2416.00    2.225   202.41
2426.00    2.277   202.15
2436.00    2.328   201.91
2446.00    2.379   201.67
2456.00    2.429   201.45
2466.00    2.478   201.23
2476.00    2.527   201.02
2486.00    2.576   200.82
2496.00    2.623   200.63
2506.00    2.671   200.44
2516.00    2.717   200.27
2526.00    2.763   200.09
2536.00    2.809   199.92
2546.00    2.854   199.76
2556.00    2.898   199.61
2566.00    2.942   199.45
2576.00    2.985   199.30
2586.00    3.028   199.16
2596.00    3.070   199.02
2606.00    3.112   198.88
2616.00    3.153   198.75
2626.00    3.194   198.62
2636.00    3.234   198.50
2646.00    3.274   198.37
2656.00    3.313   198.25
2666.00    3.351   198.14
2676.00    3.389   198.02
2686.00    3.427   197.91
2696.00    3.464   197.80
2706.00    3.501   197.69
2716.00    3.537   197.59
2726.00    3.572   197.49
2736.00    3.607   197.38
2746.00    3.642   197.29
2756.00    3.676   197.19
2766.00    3.710   197.09
2776.00    3.743   197.00
2786.00    3.775   196.91
2796.00    3.808   196.82
2806.00    3.839   196.73
2816.00    3.870   196.64
2826.00    3.901   196.55
2836.00    3.931   196.47
2846.00    3.961   196.39
2856.00    3.991   196.30
2866.00    4.019   196.22
2876.00    4.048   196.14
2886.00    4.076   196.06
2896.00    4.103   195.99
2906.00    4.130   195.91
2916.00    4.157   195.83
2926.00    4.183   195.76
2936.00    4.208   195.68
2946.00    4.233   195.61
2956.00    4.258   195.54
2966.00    4.282   195.47
2976.00    4.306   195.40
2986.00    4.329   195.33
2996.00    4.352   195.26
3006.00    4.375   195.19
3016.00    4.397   195.12
3026.00    4.418   195.06
3036.00    4.439   194.99
3046.00    4.460   194.92
3056.00    4.480   194.86
3066.00    4.500   194.79
3076.00    4.519   194.73
3086.00    4.538   194.67
3096.00    4.556   194.60
3106.00    4.574   194.54
3116.00    4.592   194.48
3126.00    4.609   194.42
3136.00    4.625   194.36
3146.00    4.642   194.30
3156.00    4.657   194.24
3166.00    4.673   194.18
3176.00    4.688   194.12
3186.00    4.702   194.06
3196.00    4.716   194.00
3206.00    4.729   193.94
3216.00    4.742   193.88
3226.00    4.755   193.82
3236.00    4.767   193.77
3246.00    4.779   193.71
3256.00    4.790   193.65
3266.00    4.801   193.60
3276.00    4.811   193.54
3286.00    4.821   193.48
3296.00    4.831   193.43
3306.00    4.840   193.37
3316.00    4.849   193.32
3326.00    4.857   193.26
3336.00    4.864   193.21
3346.00    4.872   193.15
3356.00    4.879   193.10
3366.00    4.885   193.04
3376.00    4.891   192.99
3386.00    4.896   192.93
3396.00    4.901   192.88
3406.00    4.906   192.83
3416.00    4.910   192.77
3426.00    4.914   192.72
3436.00    4.917   192.66
3446.00    4.919   192.61

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 18:00:49