Double Star Calculator - Orbit

Orbital Elements for HWE78AB,C
WDS: HWE78AB,C WDS ID/Discoverer
P: 1394.438 Orbital period (years)
a: 3.99697 Semi-major axis (arcseconds)
i: 109.767 Inclination (degrees)
Ω: 90.72 Longitude of ascending node (degrees)
T: 2090.006 Epoch of periastron passage (year)
e: 0.87514 Eccentricity
ω: 75.307 Longitude of periastron (degrees)
Start-Year: 1327.7812 Year
End-Year: 2722.2188 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for HWE78AB,C
Position: 153117.22-334911.2 Epoch-2000 right ascension and declination
WDS-ID: 15313-3349 WDS designation
Discoverer Code: HWE78AB,C Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 138138 HD catalog number
Hipparcos number: 76001 Hipparcos catalog number
V1: 7.03 Magnitude of the primary
V2: 9.11 Magnitude of the secondary
Equinox: Equinox
Date: 2014 Date of last observation
Orbit grade: 5 Orbit grade, ranging from :
1 = Definitive
2 = Good
3 = Reliable
4 = Preliminary
5 = Indeterminate
Flags: Flags
Ephemerides: Ephemerides
Code: Izm2019 Reference

Double Star Orbit for HWE78AB,C



WDS 6th Orbit including measures of HWE78AB,C

-- 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 HWE78AB,C
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.389   117.57
--------------------------
1327.78    3.250   222.85
1337.78    3.229   222.21
1347.78    3.207   221.56
1357.78    3.185   220.90
1367.78    3.162   220.23
1377.78    3.139   219.55
1387.78    3.115   218.86
1397.78    3.090   218.16
1407.78    3.065   217.44
1417.78    3.040   216.72
1427.78    3.014   215.98
1437.78    2.988   215.23
1447.78    2.961   214.47
1457.78    2.934   213.69
1467.78    2.907   212.90
1477.78    2.879   212.10
1487.78    2.851   211.27
1497.78    2.823   210.44
1507.78    2.794   209.58
1517.78    2.765   208.71
1527.78    2.736   207.81
1537.78    2.707   206.90
1547.78    2.677   205.97
1557.78    2.647   205.02
1567.78    2.617   204.05
1577.78    2.587   203.05
1587.78    2.557   202.03
1597.78    2.527   200.98
1607.78    2.496   199.91
1617.78    2.466   198.82
1627.78    2.435   197.69
1637.78    2.405   196.54
1647.78    2.374   195.36
1657.78    2.344   194.15
1667.78    2.314   192.90
1677.78    2.284   191.62
1687.78    2.254   190.31
1697.78    2.224   188.97
1707.78    2.194   187.58
1717.78    2.165   186.16
1727.78    2.136   184.70
1737.78    2.107   183.20
1747.78    2.079   181.66
1757.78    2.051   180.08
1767.78    2.023   178.45
1777.78    1.996   176.78
1787.78    1.970   175.06
1797.78    1.943   173.30
1807.78    1.918   171.49
1817.78    1.893   169.63
1827.78    1.868   167.72
1837.78    1.844   165.76
1847.78    1.821   163.75
1857.78    1.798   161.69
1867.78    1.776   159.58
1877.78    1.755   157.42
1887.78    1.734   155.20
1897.78    1.713   152.92
1907.78    1.693   150.60
1917.78    1.673   148.22
1927.78    1.654   145.78
1937.78    1.634   143.28
1947.78    1.614   140.72
1957.78    1.594   138.10
1967.78    1.572   135.40
1977.78    1.550   132.63
1987.78    1.525   129.78
1997.78    1.497   126.82
2007.78    1.466   123.75
2017.78    1.428   120.53
2027.78    1.383   117.12
2037.78    1.326   113.44
2047.78    1.251   109.38
2057.78    1.147   104.70
2067.78    0.995    98.85
2077.78    0.746    89.99
2087.78    0.309    62.54
2097.78    0.421   293.34
2107.78    0.895   276.07
2117.78    1.245   270.11
2127.78    1.516   266.56
2137.78    1.738   264.01
2147.78    1.924   261.99
2157.78    2.085   260.31
2167.78    2.226   258.86
2177.78    2.351   257.57
2187.78    2.463   256.41
2197.78    2.564   255.34
2207.78    2.655   254.35
2217.78    2.738   253.42
2227.78    2.814   252.55
2237.78    2.884   251.72
2247.78    2.947   250.92
2257.78    3.006   250.16
2267.78    3.059   249.43
2277.78    3.109   248.72
2287.78    3.154   248.03
2297.78    3.196   247.36
2307.78    3.234   246.71
2317.78    3.269   246.07
2327.78    3.301   245.44
2337.78    3.330   244.83
2347.78    3.357   244.23
2357.78    3.381   243.63
2367.78    3.403   243.05
2377.78    3.423   242.47
2387.78    3.440   241.89
2397.78    3.456   241.33
2407.78    3.470   240.76
2417.78    3.481   240.20
2427.78    3.491   239.65
2437.78    3.500   239.10
2447.78    3.507   238.55
2457.78    3.512   238.00
2467.78    3.516   237.45
2477.78    3.518   236.91
2487.78    3.519   236.36
2497.78    3.519   235.82
2507.78    3.518   235.27
2517.78    3.515   234.73
2527.78    3.511   234.18
2537.78    3.506   233.63
2547.78    3.500   233.08
2557.78    3.493   232.53
2567.78    3.485   231.97
2577.78    3.476   231.42
2587.78    3.466   230.86
2597.78    3.454   230.29
2607.78    3.443   229.72
2617.78    3.430   229.15
2627.78    3.416   228.58
2637.78    3.402   228.00
2647.78    3.386   227.41
2657.78    3.370   226.82
2667.78    3.353   226.22
2677.78    3.336   225.62
2687.78    3.318   225.01
2697.78    3.299   224.39
2707.78    3.279   223.77
2717.78    3.259   223.14






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 17:16:16



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