Double Star Calculator - Orbit

Orbital Elements for BU1119

WDS:	BU1119	WDS ID/Discoverer
P:	1032.000	Orbital period (years)
a:	0.906	Semi-major axis (arcseconds)
i:	131.5	Inclination (degrees)
Ω:	45.3	Longitude of ascending node (degrees)
T:	2012.000	Epoch of periastron passage (year)
e:	0.612	Eccentricity
ω:	175.2	Longitude of periastron (degrees)
Start-Year:	1509.0	Year
End-Year:	2541.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1119
Position:	171720.56-300952.0	Epoch-2000 right ascension and declination
WDS-ID:	17173-3010	WDS designation
Discoverer Code:	BU1119	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	156184	HD catalog number
Hipparcos number:	84576	Hipparcos catalog number
V1:	7.52	Magnitude of the primary
V2:	8.34	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	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:	Zir2012b	Reference

Double Star Orbit for BU1119

WDS 6th Orbit including measures of BU1119

-- 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 BU1119

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.352   210.97
--------------------------
1509.00    1.458    47.57
1519.00    1.458    46.86
1529.00    1.456    46.15
1539.00    1.453    45.45
1549.00    1.449    44.73
1559.00    1.444    44.02
1569.00    1.438    43.29
1579.00    1.431    42.56
1589.00    1.423    41.83
1599.00    1.413    41.08
1609.00    1.403    40.33
1619.00    1.391    39.56
1629.00    1.378    38.77
1639.00    1.364    37.98
1649.00    1.349    37.16
1659.00    1.333    36.33
1669.00    1.316    35.47
1679.00    1.297    34.59
1689.00    1.277    33.69
1699.00    1.256    32.75
1709.00    1.233    31.78
1719.00    1.210    30.78
1729.00    1.185    29.73
1739.00    1.159    28.64
1749.00    1.131    27.49
1759.00    1.102    26.29
1769.00    1.072    25.02
1779.00    1.040    23.67
1789.00    1.007    22.24
1799.00    0.972    20.71
1809.00    0.937    19.06
1819.00    0.899    17.28
1829.00    0.860    15.34
1839.00    0.820    13.22
1849.00    0.779    10.87
1859.00    0.736     8.25
1869.00    0.692     5.31
1879.00    0.648     1.96
1889.00    0.602   358.12
1899.00    0.556   353.64
1909.00    0.511   348.35
1919.00    0.466   342.04
1929.00    0.424   334.45
1939.00    0.386   325.27
1949.00    0.355   314.29
1959.00    0.332   301.49
1969.00    0.321   287.33
1979.00    0.320   272.63
1989.00    0.328   258.29
1999.00    0.339   244.80
2009.00    0.349   232.16
2019.00    0.353   220.01
2029.00    0.351   207.93
2039.00    0.346   195.58
2049.00    0.342   182.89
2059.00    0.344   170.09
2069.00    0.353   157.66
2079.00    0.370   146.11
2089.00    0.394   135.79
2099.00    0.425   126.81
2109.00    0.460   119.13
2119.00    0.498   112.57
2129.00    0.538   106.97
2139.00    0.579   102.15
2149.00    0.620    97.98
2159.00    0.662    94.32
2169.00    0.703    91.09
2179.00    0.743    88.22
2189.00    0.782    85.64
2199.00    0.821    83.30
2209.00    0.859    81.18
2219.00    0.895    79.22
2229.00    0.930    77.42
2239.00    0.964    75.75
2249.00    0.997    74.19
2259.00    1.029    72.73
2269.00    1.060    71.35
2279.00    1.089    70.05
2289.00    1.118    68.82
2299.00    1.145    67.65
2309.00    1.171    66.53
2319.00    1.195    65.46
2329.00    1.219    64.43
2339.00    1.241    63.44
2349.00    1.263    62.48
2359.00    1.283    61.55
2369.00    1.302    60.66
2379.00    1.320    59.78
2389.00    1.337    58.93
2399.00    1.352    58.10
2409.00    1.367    57.29
2419.00    1.380    56.49
2429.00    1.393    55.71
2439.00    1.404    54.95
2449.00    1.414    54.19
2459.00    1.423    53.45
2469.00    1.432    52.71
2479.00    1.439    51.98
2489.00    1.445    51.26
2499.00    1.449    50.54
2509.00    1.453    49.83
2519.00    1.456    49.12
2529.00    1.458    48.41
2539.00    1.458    47.71

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 17:36:00