Double Star Calculator - Orbit

Orbital Elements for HO378AB

WDS:	HO378AB	WDS ID/Discoverer
P:	1031.747	Orbital period (years)
a:	1.01234	Semi-major axis (arcseconds)
i:	79.21	Inclination (degrees)
Ω:	52.54	Longitude of ascending node (degrees)
T:	1856.426	Epoch of periastron passage (year)
e:	0.77115	Eccentricity
ω:	55.347	Longitude of periastron (degrees)
Start-Year:	1509.12625	Year
End-Year:	2540.8737499999997	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO378AB
Position:	110457.29+382438.2	Epoch-2000 right ascension and declination
WDS-ID:	11050+3825	WDS designation
Discoverer Code:	HO378AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	96016	HD catalog number
Hipparcos number:	54178	Hipparcos catalog number
V1:	8.25	Magnitude of the primary
V2:	9.14	Magnitude of the secondary
Equinox:		Equinox
Date:	2015	Date of last observation
Orbit grade:	4	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 HO378AB

WDS 6th Orbit including measures of HO378AB

-- 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 HO378AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.089   237.12
--------------------------
1509.13    0.687   257.31
1519.13    0.661   258.25
1529.13    0.634   259.27
1539.13    0.607   260.38
1549.13    0.579   261.59
1559.13    0.552   262.92
1569.13    0.524   264.40
1579.13    0.496   266.04
1589.13    0.467   267.88
1599.13    0.439   269.96
1609.13    0.411   272.32
1619.13    0.383   275.02
1629.13    0.356   278.14
1639.13    0.329   281.78
1649.13    0.304   286.04
1659.13    0.280   291.05
1669.13    0.258   296.97
1679.13    0.238   303.92
1689.13    0.223   311.97
1699.13    0.211   321.06
1709.13    0.205   330.92
1719.13    0.205   341.09
1729.13    0.210   351.01
1739.13    0.221     0.22
1749.13    0.235     8.43
1759.13    0.253    15.60
1769.13    0.272    21.80
1779.13    0.292    27.16
1789.13    0.311    31.85
1799.13    0.327    36.02
1809.13    0.339    39.85
1819.13    0.343    43.49
1829.13    0.333    47.20
1839.13    0.298    51.43
1849.13    0.223    57.66
1859.13    0.101    76.07
1869.13    0.081   194.94
1879.13    0.217   219.44
1889.13    0.340   225.16
1899.13    0.447   227.95
1909.13    0.538   229.71
1919.13    0.619   230.99
1929.13    0.689   231.99
1939.13    0.752   232.81
1949.13    0.807   233.51
1959.13    0.858   234.12
1969.13    0.903   234.67
1979.13    0.944   235.17
1989.13    0.980   235.64
1999.13    1.014   236.06
2009.13    1.044   236.47
2019.13    1.071   236.85
2029.13    1.096   237.21
2039.13    1.118   237.56
2049.13    1.138   237.89
2059.13    1.155   238.22
2069.13    1.171   238.53
2079.13    1.185   238.84
2089.13    1.197   239.14
2099.13    1.208   239.43
2109.13    1.217   239.72
2119.13    1.224   240.01
2129.13    1.230   240.29
2139.13    1.235   240.57
2149.13    1.238   240.85
2159.13    1.240   241.13
2169.13    1.241   241.41
2179.13    1.241   241.68
2189.13    1.240   241.96
2199.13    1.237   242.24
2209.13    1.234   242.52
2219.13    1.229   242.80
2229.13    1.224   243.08
2239.13    1.218   243.37
2249.13    1.211   243.66
2259.13    1.203   243.95
2269.13    1.194   244.25
2279.13    1.184   244.55
2289.13    1.173   244.86
2299.13    1.162   245.17
2309.13    1.150   245.49
2319.13    1.137   245.81
2329.13    1.123   246.15
2339.13    1.109   246.49
2349.13    1.094   246.84
2359.13    1.078   247.20
2369.13    1.062   247.57
2379.13    1.044   247.96
2389.13    1.027   248.36
2399.13    1.008   248.77
2409.13    0.989   249.19
2419.13    0.970   249.64
2429.13    0.950   250.10
2439.13    0.929   250.58
2449.13    0.907   251.09
2459.13    0.885   251.62
2469.13    0.863   252.18
2479.13    0.840   252.77
2489.13    0.816   253.39
2499.13    0.792   254.05
2509.13    0.768   254.75
2519.13    0.743   255.49
2529.13    0.717   256.29
2539.13    0.691   257.15

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.

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Double Star Calculator:		Version 1.2 ($Rev: 2397 $)
Report created:		2026-06-25 16:33:20