Double Star Calculator - Orbit

Orbital Elements for STT66

WDS:	STT66	WDS ID/Discoverer
P:	1198.468	Orbital period (years)
a:	2.49681	Semi-major axis (arcseconds)
i:	87.97	Inclination (degrees)
Ω:	147.528	Longitude of ascending node (degrees)
T:	2090.184	Epoch of periastron passage (year)
e:	0.8157	Eccentricity
ω:	74.298	Longitude of periastron (degrees)
Start-Year:	1425.76595	Year
End-Year:	2624.23405	Year
Epoch:	2026.5	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STT66
Position:	035204.69+404750.7	Epoch-2000 right ascension and declination
WDS-ID:	03521+4048	WDS designation
Discoverer Code:	STT66	Discover designation and components
ADS number:	2815	Aitken Double Star catalog
HD number:	24117	HD catalog number
Hipparcos number:	18095	Hipparcos catalog number
V1:	8.11	Magnitude of the primary
V2:	8.54	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 STT66

WDS 6th Orbit including measures of STT66

-- 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 STT66

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.990   145.33
--------------------------
1425.77    1.483   333.35
1435.77    1.447   333.53
1445.77    1.410   333.72
1455.77    1.373   333.92
1465.77    1.335   334.12
1475.77    1.296   334.35
1485.77    1.257   334.58
1495.77    1.217   334.83
1505.77    1.177   335.10
1515.77    1.136   335.39
1525.77    1.095   335.70
1535.77    1.053   336.03
1545.77    1.011   336.39
1555.77    0.968   336.78
1565.77    0.925   337.21
1575.77    0.882   337.68
1585.77    0.838   338.20
1595.77    0.794   338.78
1605.77    0.749   339.42
1615.77    0.705   340.15
1625.77    0.660   340.97
1635.77    0.615   341.92
1645.77    0.569   343.01
1655.77    0.524   344.30
1665.77    0.479   345.83
1675.77    0.434   347.68
1685.77    0.389   349.95
1695.77    0.345   352.81
1705.77    0.301   356.51
1715.77    0.260     1.42
1725.77    0.220     8.15
1735.77    0.185    17.62
1745.77    0.157    30.96
1755.77    0.140    48.69
1765.77    0.139    68.70
1775.77    0.155    86.79
1785.77    0.182   100.56
1795.77    0.217   110.34
1805.77    0.256   117.29
1815.77    0.297   122.35
1825.77    0.340   126.15
1835.77    0.384   129.10
1845.77    0.428   131.43
1855.77    0.472   133.33
1865.77    0.517   134.90
1875.77    0.560   136.23
1885.77    0.604   137.36
1895.77    0.646   138.34
1905.77    0.688   139.20
1915.77    0.729   139.97
1925.77    0.768   140.65
1935.77    0.806   141.27
1945.77    0.842   141.84
1955.77    0.876   142.36
1965.77    0.907   142.84
1975.77    0.935   143.29
1985.77    0.958   143.72
1995.77    0.977   144.13
2005.77    0.990   144.53
2015.77    0.996   144.92
2025.77    0.991   145.30
2035.77    0.973   145.70
2045.77    0.936   146.12
2055.77    0.871   146.59
2065.77    0.763   147.16
2075.77    0.584   148.00
2085.77    0.292   150.14
2095.77    0.101   317.96
2105.77    0.466   325.76
2115.77    0.754   326.83
2125.77    0.977   327.34
2135.77    1.155   327.68
2145.77    1.302   327.93
2155.77    1.424   328.14
2165.77    1.528   328.32
2175.77    1.617   328.47
2185.77    1.693   328.61
2195.77    1.760   328.74
2205.77    1.817   328.86
2215.77    1.867   328.97
2225.77    1.910   329.08
2235.77    1.948   329.18
2245.77    1.980   329.28
2255.77    2.008   329.38
2265.77    2.031   329.47
2275.77    2.050   329.57
2285.77    2.066   329.66
2295.77    2.078   329.75
2305.77    2.087   329.83
2315.77    2.094   329.92
2325.77    2.098   330.01
2335.77    2.099   330.10
2345.77    2.098   330.18
2355.77    2.095   330.27
2365.77    2.090   330.36
2375.77    2.083   330.45
2385.77    2.074   330.54
2395.77    2.064   330.63
2405.77    2.051   330.72
2415.77    2.037   330.81
2425.77    2.022   330.90
2435.77    2.005   331.00
2445.77    1.987   331.09
2455.77    1.968   331.19
2465.77    1.947   331.29
2475.77    1.925   331.39
2485.77    1.902   331.50
2495.77    1.878   331.60
2505.77    1.852   331.72
2515.77    1.826   331.83
2525.77    1.799   331.95
2535.77    1.770   332.07
2545.77    1.741   332.19
2555.77    1.711   332.32
2565.77    1.680   332.45
2575.77    1.648   332.59
2585.77    1.616   332.74
2595.77    1.582   332.89
2605.77    1.548   333.04
2615.77    1.513   333.21

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 15:15:54