Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:55:47

Orbital Elements for BU1091
WDS: BU1091 WDS ID/Discoverer
P: 1297.000 Orbital period (years)
a: 1.175 Semi-major axis (arcseconds)
i: 138.5 Inclination (degrees)
Ω: 172.9 Longitude of ascending node (degrees)
T: 1933.000 Epoch of periastron passage (year)
e: 0.896 Eccentricity
ω: 77.8 Longitude of periastron (degrees)
Start-Year: 1377.0 Year
End-Year: 2673.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for BU1091
Position: 181236.71+383551.0 Epoch-2000 right ascension and declination
WDS-ID: 18126+3836 WDS designation
Discoverer Code: BU1091 Discover designation and components
ADS number: 11170 Aitken Double Star catalog
HD number: . HD catalog number
Hipparcos number: 89237 Hipparcos catalog number
V1: 8.66 Magnitude of the primary
V2: 9.24 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for BU1091



WDS 6th Orbit including measures of BU1091

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of BU1091
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.804    317.1
-------------------------
1377.0     1.662    274.8
1387.0     1.656    274.4
1397.0     1.649    273.9
1407.0     1.642    273.4
1417.0     1.634    273.0
1427.0     1.626    272.5
1437.0     1.617    272.0
1447.0     1.608    271.5
1457.0     1.598    271.0
1467.0     1.587    270.5
1477.0     1.577    270.0
1487.0     1.565    269.5
1497.0     1.553    269.0
1507.0     1.541    268.4
1517.0     1.528    267.9
1527.0     1.515    267.3
1537.0     1.500    266.8
1547.0     1.486    266.2
1557.0     1.471    265.6
1567.0     1.455    265.0
1577.0     1.438    264.4
1587.0     1.421    263.8
1597.0     1.404    263.2
1607.0     1.386    262.5
1617.0     1.367    261.8
1627.0     1.347    261.1
1637.0     1.327    260.4
1647.0     1.306    259.7
1657.0     1.284    258.9
1667.0     1.262    258.1
1677.0     1.239    257.3
1687.0     1.215    256.5
1697.0     1.190    255.6
1707.0     1.164    254.7
1717.0     1.138    253.7
1727.0     1.111    252.7
1737.0     1.082    251.6
1747.0     1.053    250.5
1757.0     1.022    249.3
1767.0     0.991    248.1
1777.0     0.958    246.7
1787.0     0.924    245.3
1797.0     0.889    243.8
1807.0     0.852    242.1
1817.0     0.813    240.2
1827.0     0.773    238.2
1837.0     0.731    235.9
1847.0     0.686    233.4
1857.0     0.640    230.5
1867.0     0.590    227.1
1877.0     0.536    223.1
1887.0     0.479    218.2
1897.0     0.416    211.8
1907.0     0.344    202.9
1917.0     0.260    188.8
1927.0     0.152    157.4
1937.0     0.113     45.8
1947.0     0.244    359.5
1957.0     0.353    344.9
1967.0     0.443    336.8
1977.0     0.521    331.3
1987.0     0.590    327.1
1997.0     0.653    323.8
2007.0     0.711    321.1
2017.0     0.764    318.7
2027.0     0.814    316.7
2037.0     0.860    314.9
2047.0     0.904    313.2
2057.0     0.946    311.7
2067.0     0.985    310.4
2077.0     1.022    309.1
2087.0     1.058    307.9
2097.0     1.092    306.8
2107.0     1.124    305.8
2117.0     1.155    304.8
2127.0     1.185    303.9
2137.0     1.213    303.0
2147.0     1.240    302.1
2157.0     1.266    301.3
2167.0     1.291    300.5
2177.0     1.315    299.8
2187.0     1.338    299.1
2197.0     1.360    298.4
2207.0     1.381    297.7
2217.0     1.401    297.0
2227.0     1.421    296.4
2237.0     1.439    295.8
2247.0     1.457    295.2
2257.0     1.474    294.6
2267.0     1.490    294.0
2277.0     1.506    293.4
2287.0     1.521    292.9
2297.0     1.535    292.3
2307.0     1.548    291.8
2317.0     1.561    291.3
2327.0     1.573    290.7
2337.0     1.585    290.2
2347.0     1.596    289.7
2357.0     1.606    289.2
2367.0     1.616    288.7
2377.0     1.625    288.2
2387.0     1.634    287.8
2397.0     1.642    287.3
2407.0     1.650    286.8
2417.0     1.657    286.4
2427.0     1.663    285.9
2437.0     1.669    285.4
2447.0     1.674    285.0
2457.0     1.679    284.5
2467.0     1.684    284.1
2477.0     1.687    283.6
2487.0     1.691    283.2
2497.0     1.693    282.7
2507.0     1.696    282.3
2517.0     1.698    281.8
2527.0     1.699    281.4
2537.0     1.700    281.0
2547.0     1.700    280.5
2557.0     1.700    280.1
2567.0     1.699    279.6
2577.0     1.698    279.2
2587.0     1.696    278.8
2597.0     1.694    278.3
2607.0     1.692    277.9
2617.0     1.689    277.4
2627.0     1.685    277.0
2637.0     1.681    276.5
2647.0     1.677    276.1
2657.0     1.672    275.6
2667.0     1.666    275.2






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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