Double Star Calculator - Orbit

Orbital Elements for HDO269

WDS:	HDO269	WDS ID/Discoverer
P:	1700.000	Orbital period (years)
a:	0.806	Semi-major axis (arcseconds)
i:	72.4	Inclination (degrees)
Ω:	27.7	Longitude of ascending node (degrees)
T:	1999.500	Epoch of periastron passage (year)
e:	0.949	Eccentricity
ω:	112.7	Longitude of periastron (degrees)
Start-Year:	1175.0	Year
End-Year:	2875.0	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDO269
Position:	171924.63-441322.8	Epoch-2000 right ascension and declination
WDS-ID:	17194-4413	WDS designation
Discoverer Code:	HDO269	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	84748	Hipparcos catalog number
V1:	7.3	Magnitude of the primary
V2:	7.5	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2017	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:	Tok2018b	Reference

Double Star Orbit for HDO269

WDS 6th Orbit including measures of HDO269

-- 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 HDO269

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.114   243.64
--------------------------
1175.00    0.756   352.43
1185.00    0.759   352.66
1195.00    0.762   352.89
1205.00    0.764   353.11
1215.00    0.767   353.34
1225.00    0.769   353.56
1235.00    0.771   353.78
1245.00    0.773   354.00
1255.00    0.775   354.22
1265.00    0.777   354.43
1275.00    0.779   354.65
1285.00    0.780   354.87
1295.00    0.782   355.08
1305.00    0.783   355.30
1315.00    0.784   355.51
1325.00    0.785   355.72
1335.00    0.786   355.94
1345.00    0.787   356.15
1355.00    0.787   356.36
1365.00    0.788   356.57
1375.00    0.788   356.78
1385.00    0.788   356.99
1395.00    0.788   357.20
1405.00    0.788   357.42
1415.00    0.787   357.63
1425.00    0.787   357.84
1435.00    0.786   358.05
1445.00    0.785   358.26
1455.00    0.784   358.48
1465.00    0.783   358.69
1475.00    0.781   358.90
1485.00    0.780   359.12
1495.00    0.778   359.34
1505.00    0.776   359.55
1515.00    0.774   359.77
1525.00    0.771   359.99
1535.00    0.769     0.21
1545.00    0.766     0.44
1555.00    0.763     0.66
1565.00    0.760     0.89
1575.00    0.756     1.11
1585.00    0.752     1.35
1595.00    0.748     1.58
1605.00    0.744     1.81
1615.00    0.740     2.05
1625.00    0.735     2.29
1635.00    0.730     2.54
1645.00    0.725     2.79
1655.00    0.719     3.04
1665.00    0.714     3.29
1675.00    0.708     3.55
1685.00    0.701     3.82
1695.00    0.694     4.09
1705.00    0.687     4.36
1715.00    0.680     4.64
1725.00    0.672     4.93
1735.00    0.664     5.22
1745.00    0.655     5.52
1755.00    0.646     5.83
1765.00    0.637     6.15
1775.00    0.627     6.48
1785.00    0.616     6.82
1795.00    0.605     7.17
1805.00    0.594     7.54
1815.00    0.582     7.92
1825.00    0.569     8.31
1835.00    0.555     8.73
1845.00    0.541     9.16
1855.00    0.526     9.62
1865.00    0.510    10.11
1875.00    0.493    10.63
1885.00    0.475    11.19
1895.00    0.456    11.80
1905.00    0.435    12.46
1915.00    0.412    13.19
1925.00    0.388    14.01
1935.00    0.361    14.95
1945.00    0.331    16.04
1955.00    0.298    17.37
1965.00    0.259    19.06
1975.00    0.212    21.44
1985.00    0.152    25.43
1995.00    0.058    38.92
2005.00    0.073   214.11
2015.00    0.101   230.76
2025.00    0.113   242.12
2035.00    0.121   251.65
2045.00    0.129   260.01
2055.00    0.137   267.42
2065.00    0.145   274.00
2075.00    0.154   279.85
2085.00    0.164   285.04
2095.00    0.173   289.66
2105.00    0.184   293.78
2115.00    0.194   297.47
2125.00    0.204   300.78
2135.00    0.215   303.76
2145.00    0.226   306.46
2155.00    0.237   308.92
2165.00    0.248   311.16
2175.00    0.258   313.21
2185.00    0.269   315.09
2195.00    0.280   316.83
2205.00    0.291   318.44
2215.00    0.301   319.94
2225.00    0.312   321.34
2235.00    0.322   322.64
2245.00    0.333   323.86
2255.00    0.343   325.01
2265.00    0.353   326.09
2275.00    0.363   327.11
2285.00    0.373   328.08
2295.00    0.383   328.99
2305.00    0.393   329.86
2315.00    0.403   330.69
2325.00    0.412   331.48
2335.00    0.422   332.24
2345.00    0.431   332.96
2355.00    0.440   333.65
2365.00    0.449   334.31
2375.00    0.458   334.95
2385.00    0.467   335.56
2395.00    0.476   336.15
2405.00    0.484   336.72
2415.00    0.493   337.27
2425.00    0.501   337.80
2435.00    0.510   338.31
2445.00    0.518   338.81
2455.00    0.526   339.29
2465.00    0.534   339.76
2475.00    0.541   340.21
2485.00    0.549   340.65
2495.00    0.557   341.08
2505.00    0.564   341.50
2515.00    0.571   341.91
2525.00    0.578   342.30
2535.00    0.586   342.69
2545.00    0.593   343.07
2555.00    0.599   343.44
2565.00    0.606   343.80
2575.00    0.613   344.15
2585.00    0.619   344.50
2595.00    0.626   344.84
2605.00    0.632   345.17
2615.00    0.638   345.49
2625.00    0.644   345.81
2635.00    0.650   346.13
2645.00    0.656   346.44
2655.00    0.661   346.74
2665.00    0.667   347.03
2675.00    0.672   347.33
2685.00    0.678   347.62
2695.00    0.683   347.90
2705.00    0.688   348.18
2715.00    0.693   348.45
2725.00    0.698   348.72
2735.00    0.702   348.99
2745.00    0.707   349.26
2755.00    0.712   349.52
2765.00    0.716   349.77
2775.00    0.720   350.03
2785.00    0.724   350.28
2795.00    0.728   350.53
2805.00    0.732   350.77
2815.00    0.736   351.02
2825.00    0.740   351.26
2835.00    0.743   351.50
2845.00    0.747   351.73
2855.00    0.750   351.97
2865.00    0.753   352.20

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 17:36:55