Double Star Calculator - Orbit

Orbital Elements for HO560AB

WDS:	HO560AB	WDS ID/Discoverer
P:	1225.146	Orbital period (years)
a:	3.49052	Semi-major axis (arcseconds)
i:	92.132	Inclination (degrees)
Ω:	79.477	Longitude of ascending node (degrees)
T:	2113.615	Epoch of periastron passage (year)
e:	0.75329	Eccentricity
ω:	244.819	Longitude of periastron (degrees)
Start-Year:	1412.4268499999998	Year
End-Year:	2637.57315	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO560AB
Position:	174322.88+335641.4	Epoch-2000 right ascension and declination
WDS-ID:	17434+3357	WDS designation
Discoverer Code:	HO560AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	161299	HD catalog number
Hipparcos number:	86733	Hipparcos catalog number
V1:	8.82	Magnitude of the primary
V2:	9.11	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 HO560AB

WDS 6th Orbit including measures of HO560AB

-- 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 HO560AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    1.397   262.39
--------------------------
1412.43    3.095    75.91
1422.43    3.046    75.81
1432.43    2.996    75.72
1442.43    2.944    75.62
1452.43    2.891    75.52
1462.43    2.836    75.41
1472.43    2.780    75.30
1482.43    2.722    75.18
1492.43    2.664    75.06
1502.43    2.604    74.93
1512.43    2.542    74.80
1522.43    2.480    74.66
1532.43    2.416    74.52
1542.43    2.351    74.36
1552.43    2.285    74.20
1562.43    2.218    74.03
1572.43    2.150    73.84
1582.43    2.081    73.65
1592.43    2.010    73.44
1602.43    1.939    73.21
1612.43    1.867    72.97
1622.43    1.793    72.71
1632.43    1.719    72.43
1642.43    1.644    72.12
1652.43    1.568    71.78
1662.43    1.492    71.40
1672.43    1.414    70.99
1682.43    1.336    70.52
1692.43    1.257    70.00
1702.43    1.178    69.41
1712.43    1.098    68.73
1722.43    1.017    67.95
1732.43    0.936    67.03
1742.43    0.855    65.93
1752.43    0.773    64.61
1762.43    0.691    62.97
1772.43    0.610    60.89
1782.43    0.529    58.18
1792.43    0.449    54.49
1802.43    0.372    49.25
1812.43    0.299    41.35
1822.43    0.235    28.78
1832.43    0.189     8.67
1842.43    0.177   341.56
1852.43    0.205   316.66
1862.43    0.260   299.96
1872.43    0.328   289.62
1882.43    0.403   282.99
1892.43    0.481   278.47
1902.43    0.561   275.22
1912.43    0.641   272.78
1922.43    0.720   270.88
1932.43    0.800   269.36
1942.43    0.877   268.11
1952.43    0.953   267.07
1962.43    1.027   266.17
1972.43    1.099   265.40
1982.43    1.166   264.71
1992.43    1.230   264.10
2002.43    1.288   263.55
2012.43    1.339   263.04
2022.43    1.382   262.57
2032.43    1.415   262.12
2042.43    1.433   261.69
2052.43    1.433   261.27
2062.43    1.409   260.83
2072.43    1.350   260.38
2082.43    1.243   259.86
2092.43    1.067   259.21
2102.43    0.795   258.19
2112.43    0.418   255.63
2122.43    0.045   127.71
2132.43    0.477    83.59
2142.43    0.878    81.52
2152.43    1.225    80.72
2162.43    1.525    80.25
2172.43    1.784    79.93
2182.43    2.011    79.69
2192.43    2.210    79.49
2202.43    2.386    79.32
2212.43    2.543    79.18
2222.43    2.683    79.05
2232.43    2.808    78.93
2242.43    2.920    78.83
2252.43    3.021    78.73
2262.43    3.111    78.63
2272.43    3.192    78.55
2282.43    3.265    78.46
2292.43    3.330    78.38
2302.43    3.388    78.30
2312.43    3.439    78.23
2322.43    3.484    78.16
2332.43    3.524    78.08
2342.43    3.558    78.02
2352.43    3.587    77.95
2362.43    3.612    77.88
2372.43    3.632    77.81
2382.43    3.648    77.75
2392.43    3.660    77.68
2402.43    3.668    77.62
2412.43    3.673    77.55
2422.43    3.675    77.49
2432.43    3.673    77.42
2442.43    3.668    77.36
2452.43    3.660    77.29
2462.43    3.650    77.22
2472.43    3.636    77.16
2482.43    3.620    77.09
2492.43    3.602    77.02
2502.43    3.581    76.96
2512.43    3.557    76.89
2522.43    3.532    76.82
2532.43    3.504    76.75
2542.43    3.474    76.68
2552.43    3.442    76.60
2562.43    3.408    76.53
2572.43    3.372    76.45
2582.43    3.335    76.37
2592.43    3.295    76.29
2602.43    3.254    76.21
2612.43    3.210    76.13
2622.43    3.166    76.04
2632.43    3.119    75.95

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 17:42:20