Double Star Calculator - Orbit

Orbital Elements for STF1867
WDS: STF1867 WDS ID/Discoverer
P: 1069.000 Orbital period (years)
a: 1.209 Semi-major axis (arcseconds)
i: 136.0 Inclination (degrees)
Ω: 85.2 Longitude of ascending node (degrees)
T: 2086.900 Epoch of periastron passage (year)
e: 0.914 Eccentricity
ω: 240.1 Longitude of periastron (degrees)
Start-Year: 1490.5 Year
End-Year: 2559.5 Year
Epoch: 2026.5 Besselian Epoch
Further data from the WDS Sixth Catalog of Orbits for STF1867
Position: 144044.21+311723.5 Epoch-2000 right ascension and declination
WDS-ID: 14407+3117 WDS designation
Discoverer Code: STF1867 Discover designation and components
ADS number: 9340 Aitken Double Star catalog
HD number: 129260 HD catalog number
Hipparcos number: 71764 Hipparcos catalog number
V1: 8.36 Magnitude of the primary
V2: 8.83 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2010 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: Zir2013a Reference

Double Star Orbit for STF1867



WDS 6th Orbit including measures of STF1867

-- 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 STF1867
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2026.50    0.591   349.40
--------------------------
1490.50    1.856    36.42
1500.50    1.857    36.01
1510.50    1.857    35.59
1520.50    1.856    35.17
1530.50    1.854    34.76
1540.50    1.852    34.34
1550.50    1.848    33.92
1560.50    1.844    33.50
1570.50    1.839    33.07
1580.50    1.833    32.65
1590.50    1.827    32.22
1600.50    1.819    31.79
1610.50    1.811    31.35
1620.50    1.802    30.91
1630.50    1.792    30.46
1640.50    1.781    30.01
1650.50    1.770    29.56
1660.50    1.758    29.10
1670.50    1.745    28.63
1680.50    1.731    28.15
1690.50    1.716    27.67
1700.50    1.700    27.18
1710.50    1.684    26.67
1720.50    1.666    26.16
1730.50    1.648    25.64
1740.50    1.629    25.11
1750.50    1.609    24.56
1760.50    1.588    24.00
1770.50    1.567    23.42
1780.50    1.544    22.82
1790.50    1.520    22.21
1800.50    1.496    21.58
1810.50    1.470    20.93
1820.50    1.443    20.25
1830.50    1.416    19.55
1840.50    1.387    18.82
1850.50    1.357    18.05
1860.50    1.326    17.25
1870.50    1.294    16.42
1880.50    1.261    15.54
1890.50    1.226    14.61
1900.50    1.190    13.62
1910.50    1.153    12.58
1920.50    1.114    11.46
1930.50    1.074    10.26
1940.50    1.032     8.96
1950.50    0.989     7.55
1960.50    0.944     6.01
1970.50    0.897     4.32
1980.50    0.848     2.43
1990.50    0.796     0.30
2000.50    0.743   357.87
2010.50    0.687   355.06
2020.50    0.628   351.73
2030.50    0.565   347.68
2040.50    0.499   342.60
2050.50    0.429   335.91
2060.50    0.353   326.44
2070.50    0.269   311.40
2080.50    0.168   280.43
2090.50    0.103   140.63
2100.50    0.285    92.67
2110.50    0.426    81.00
2120.50    0.541    74.80
2130.50    0.639    70.66
2140.50    0.726    67.57
2150.50    0.804    65.12
2160.50    0.876    63.08
2170.50    0.942    61.34
2180.50    1.003    59.82
2190.50    1.059    58.47
2200.50    1.112    57.25
2210.50    1.162    56.14
2220.50    1.209    55.12
2230.50    1.253    54.17
2240.50    1.295    53.28
2250.50    1.334    52.45
2260.50    1.371    51.67
2270.50    1.407    50.92
2280.50    1.440    50.21
2290.50    1.472    49.53
2300.50    1.502    48.88
2310.50    1.530    48.26
2320.50    1.557    47.66
2330.50    1.582    47.07
2340.50    1.606    46.51
2350.50    1.629    45.96
2360.50    1.650    45.42
2370.50    1.671    44.90
2380.50    1.690    44.39
2390.50    1.707    43.90
2400.50    1.724    43.41
2410.50    1.740    42.93
2420.50    1.754    42.46
2430.50    1.768    42.00
2440.50    1.780    41.54
2450.50    1.791    41.09
2460.50    1.802    40.64
2470.50    1.811    40.20
2480.50    1.820    39.77
2490.50    1.828    39.34
2500.50    1.834    38.91
2510.50    1.840    38.48
2520.50    1.845    38.06
2530.50    1.849    37.64
2540.50    1.852    37.22
2550.50    1.855    36.80






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 17:07:43



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