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

Double Star Calculator - Orbit

- Revision:   $Rev: 1216 $
- Report created:   2025-07-11 16:25:17

Orbital Elements for A2901
WDS: A2901 WDS ID/Discoverer
P: 1517.340 Orbital period (years)
a: 0.99 Semi-major axis (arcseconds)
i: 69.3 Inclination (degrees)
Ω: 48.4 Longitude of ascending node (degrees)
T: 1950.560 Epoch of periastron passage (year)
e: 0.621 Eccentricity
ω: 330.2 Longitude of periastron (degrees)
Start-Year: 1267.0 Year
End-Year: 2783.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2901
Position: 010130.15+692130.7 Epoch-2000 right ascension and declination
WDS-ID: 01015+6922 WDS designation
Discoverer Code: A2901 Discover designation and components
ADS number: 836 Aitken Double Star catalog
HD number: 5839 HD catalog number
Hipparcos number: 4789 Hipparcos catalog number
V1: 7.12 Magnitude of the primary
V2: 7.84 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2001 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for A2901



WDS 6th Orbit including measures of A2901

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


Ephemeris of A2901
Click to expand/collapse ephemeris: 
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.391     68.3
-------------------------
1267.0     1.469    219.3
1277.0     1.473    219.6
1287.0     1.477    219.9
1297.0     1.480    220.2
1307.0     1.482    220.4
1317.0     1.484    220.7
1327.0     1.485    221.0
1337.0     1.485    221.3
1347.0     1.485    221.6
1357.0     1.485    221.9
1367.0     1.483    222.2
1377.0     1.481    222.5
1387.0     1.479    222.8
1397.0     1.476    223.1
1407.0     1.472    223.4
1417.0     1.467    223.7
1427.0     1.462    224.0
1437.0     1.456    224.3
1447.0     1.449    224.6
1457.0     1.442    224.9
1467.0     1.434    225.2
1477.0     1.425    225.5
1487.0     1.416    225.8
1497.0     1.405    226.2
1507.0     1.394    226.5
1517.0     1.382    226.8
1527.0     1.370    227.2
1537.0     1.356    227.5
1547.0     1.342    227.9
1557.0     1.326    228.2
1567.0     1.310    228.6
1577.0     1.293    229.0
1587.0     1.275    229.4
1597.0     1.256    229.8
1607.0     1.236    230.2
1617.0     1.215    230.6
1627.0     1.193    231.1
1637.0     1.170    231.5
1647.0     1.146    232.0
1657.0     1.120    232.5
1667.0     1.094    233.0
1677.0     1.066    233.6
1687.0     1.037    234.2
1697.0     1.007    234.8
1707.0     0.975    235.4
1717.0     0.942    236.1
1727.0     0.908    236.9
1737.0     0.872    237.7
1747.0     0.835    238.6
1757.0     0.796    239.6
1767.0     0.756    240.6
1777.0     0.714    241.8
1787.0     0.670    243.2
1797.0     0.624    244.7
1807.0     0.577    246.5
1817.0     0.529    248.6
1827.0     0.478    251.2
1837.0     0.427    254.3
1847.0     0.374    258.3
1857.0     0.321    263.7
1867.0     0.270    271.1
1877.0     0.223    281.9
1887.0     0.184    297.8
1897.0     0.164    319.6
1907.0     0.168    343.6
1917.0     0.195      3.5
1927.0     0.235     17.7
1937.0     0.278     27.5
1947.0     0.319     34.8
1957.0     0.354     40.5
1967.0     0.381     45.2
1977.0     0.399     49.5
1987.0     0.409     53.4
1997.0     0.412     57.2
2007.0     0.408     61.0
2017.0     0.400     65.0
2027.0     0.389     69.1
2037.0     0.375     73.5
2047.0     0.360     78.3
2057.0     0.346     83.5
2067.0     0.332     89.1
2077.0     0.319     95.2
2087.0     0.309    101.7
2097.0     0.302    108.6
2107.0     0.298    115.8
2117.0     0.298    123.1
2127.0     0.302    130.3
2137.0     0.309    137.2
2147.0     0.320    143.7
2157.0     0.334    149.7
2167.0     0.351    155.2
2177.0     0.370    160.2
2187.0     0.391    164.6
2197.0     0.414    168.6
2207.0     0.437    172.2
2217.0     0.462    175.4
2227.0     0.487    178.2
2237.0     0.513    180.8
2247.0     0.539    183.2
2257.0     0.565    185.3
2267.0     0.591    187.2
2277.0     0.617    189.0
2287.0     0.644    190.6
2297.0     0.670    192.1
2307.0     0.696    193.5
2317.0     0.722    194.7
2327.0     0.747    195.9
2337.0     0.773    197.1
2347.0     0.798    198.1
2357.0     0.823    199.1
2367.0     0.847    200.0
2377.0     0.871    200.9
2387.0     0.895    201.7
2397.0     0.918    202.5
2407.0     0.941    203.2
2417.0     0.963    203.9
2427.0     0.986    204.6
2437.0     1.007    205.3
2447.0     1.029    205.9
2457.0     1.049    206.5
2467.0     1.070    207.1
2477.0     1.090    207.6
2487.0     1.109    208.2
2497.0     1.128    208.7
2507.0     1.147    209.2
2517.0     1.165    209.6
2527.0     1.183    210.1
2537.0     1.200    210.6
2547.0     1.217    211.0
2557.0     1.233    211.4
2567.0     1.249    211.9
2577.0     1.264    212.3
2587.0     1.279    212.7
2597.0     1.294    213.1
2607.0     1.308    213.4
2617.0     1.321    213.8
2627.0     1.334    214.2
2637.0     1.346    214.5
2647.0     1.358    214.9
2657.0     1.370    215.2
2667.0     1.380    215.6
2677.0     1.391    215.9
2687.0     1.401    216.2
2697.0     1.410    216.6
2707.0     1.419    216.9
2717.0     1.427    217.2
2727.0     1.435    217.5
2737.0     1.442    217.8
2747.0     1.449    218.1
2757.0     1.455    218.4
2767.0     1.461    218.7
2777.0     1.466    219.0



 

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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