Double Star Calculator - Orbit

Orbital Elements for HO144

WDS:	HO144	WDS ID/Discoverer
P:	1644.000	Orbital period (years)
a:	1.031	Semi-major axis (arcseconds)
i:	91.5	Inclination (degrees)
Ω:	168.9	Longitude of ascending node (degrees)
T:	1944.840	Epoch of periastron passage (year)
e:	0.791	Eccentricity
ω:	116.9	Longitude of periastron (degrees)
Start-Year:	1203.0	Year
End-Year:	2847.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HO144
Position:	205221.84+200741.6	Epoch-2000 right ascension and declination
WDS-ID:	20524+2008	WDS designation
Discoverer Code:	HO144	Discover designation and components
ADS number:	14379	Aitken Double Star catalog
HD number:	198810	HD catalog number
Hipparcos number:	103028	Hipparcos catalog number
V1:	7.98	Magnitude of the primary
V2:	8.95	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2007	Date of last observation
Orbit grade:	4	Orbit grade, ranging from : 1 = Definitive 2 = Good 3 = Reliable 4 = Preliminary 5 = Indeterminate
Flags:	n	Flags
Ephemerides:		Ephemerides
Code:	Lin2012a	Reference

Double Star Orbit for HO144

WDS 6th Orbit including measures of HO144

-- 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 HO144

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.360   347.09
--------------------------
1203.00    0.925   171.47
1213.00    0.936   171.43
1223.00    0.945   171.38
1233.00    0.955   171.34
1243.00    0.964   171.30
1253.00    0.973   171.26
1263.00    0.982   171.22
1273.00    0.991   171.18
1283.00    0.999   171.15
1293.00    1.007   171.11
1303.00    1.015   171.07
1313.00    1.022   171.04
1323.00    1.029   171.00
1333.00    1.036   170.97
1343.00    1.042   170.93
1353.00    1.049   170.90
1363.00    1.055   170.86
1373.00    1.060   170.83
1383.00    1.065   170.80
1393.00    1.070   170.77
1403.00    1.075   170.73
1413.00    1.079   170.70
1423.00    1.083   170.67
1433.00    1.087   170.64
1443.00    1.090   170.61
1453.00    1.092   170.57
1463.00    1.095   170.54
1473.00    1.097   170.51
1483.00    1.098   170.48
1493.00    1.099   170.45
1503.00    1.100   170.42
1513.00    1.100   170.39
1523.00    1.100   170.36
1533.00    1.099   170.33
1543.00    1.098   170.30
1553.00    1.096   170.27
1563.00    1.094   170.23
1573.00    1.091   170.20
1583.00    1.087   170.17
1593.00    1.083   170.14
1603.00    1.078   170.11
1613.00    1.073   170.08
1623.00    1.067   170.04
1633.00    1.060   170.01
1643.00    1.053   169.98
1653.00    1.044   169.94
1663.00    1.035   169.91
1673.00    1.025   169.87
1683.00    1.015   169.84
1693.00    1.003   169.80
1703.00    0.990   169.76
1713.00    0.976   169.73
1723.00    0.961   169.69
1733.00    0.945   169.64
1743.00    0.928   169.60
1753.00    0.909   169.56
1763.00    0.888   169.51
1773.00    0.866   169.46
1783.00    0.843   169.41
1793.00    0.817   169.36
1803.00    0.789   169.30
1813.00    0.759   169.24
1823.00    0.727   169.17
1833.00    0.691   169.10
1843.00    0.653   169.01
1853.00    0.610   168.92
1863.00    0.563   168.81
1873.00    0.511   168.68
1883.00    0.454   168.52
1893.00    0.389   168.31
1903.00    0.315   168.01
1913.00    0.232   167.50
1923.00    0.136   166.33
1933.00    0.031   157.64
1943.00    0.078   352.75
1953.00    0.175   350.10
1963.00    0.248   349.26
1973.00    0.297   348.76
1983.00    0.329   348.38
1993.00    0.348   348.06
2003.00    0.358   347.76
2013.00    0.362   347.48
2023.00    0.361   347.19
2033.00    0.356   346.90
2043.00    0.349   346.60
2053.00    0.340   346.29
2063.00    0.328   345.95
2073.00    0.316   345.59
2083.00    0.302   345.20
2093.00    0.288   344.77
2103.00    0.272   344.30
2113.00    0.256   343.76
2123.00    0.240   343.16
2133.00    0.223   342.46
2143.00    0.206   341.65
2153.00    0.188   340.68
2163.00    0.170   339.52
2173.00    0.153   338.09
2183.00    0.135   336.27
2193.00    0.117   333.90
2203.00    0.099   330.67
2213.00    0.082   326.06
2223.00    0.065   319.02
2233.00    0.050   307.46
2243.00    0.038   287.64
2253.00    0.034   258.08
2263.00    0.040   229.75
2273.00    0.052   211.61
2283.00    0.068   201.02
2293.00    0.085   194.50
2303.00    0.102   190.18
2313.00    0.120   187.13
2323.00    0.138   184.88
2333.00    0.156   183.14
2343.00    0.174   181.77
2353.00    0.192   180.66
2363.00    0.211   179.74
2373.00    0.229   178.97
2383.00    0.247   178.31
2393.00    0.265   177.74
2403.00    0.283   177.24
2413.00    0.300   176.80
2423.00    0.318   176.41
2433.00    0.336   176.06
2443.00    0.353   175.75
2453.00    0.370   175.46
2463.00    0.388   175.20
2473.00    0.405   174.96
2483.00    0.422   174.75
2493.00    0.438   174.54
2503.00    0.455   174.36
2513.00    0.472   174.18
2523.00    0.488   174.02
2533.00    0.504   173.87
2543.00    0.521   173.73
2553.00    0.536   173.59
2563.00    0.552   173.47
2573.00    0.568   173.35
2583.00    0.583   173.24
2593.00    0.599   173.13
2603.00    0.614   173.03
2613.00    0.629   172.93
2623.00    0.644   172.84
2633.00    0.658   172.75
2643.00    0.673   172.67
2653.00    0.687   172.59
2663.00    0.701   172.51
2673.00    0.715   172.44
2683.00    0.729   172.36
2693.00    0.743   172.30
2703.00    0.756   172.23
2713.00    0.769   172.17
2723.00    0.782   172.10
2733.00    0.795   172.04
2743.00    0.807   171.99
2753.00    0.820   171.93
2763.00    0.832   171.87
2773.00    0.844   171.82
2783.00    0.856   171.77
2793.00    0.867   171.72
2803.00    0.878   171.67
2813.00    0.890   171.62
2823.00    0.900   171.58
2833.00    0.911   171.53
2843.00    0.921   171.49

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 18:19:33