Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 18:11:48

Orbital Elements for STF1647
WDS: STF1647 WDS ID/Discoverer
P: 1010.661 Orbital period (years)
a: 1.96209 Semi-major axis (arcseconds)
i: 66.97 Inclination (degrees)
Ω: 78.669 Longitude of ascending node (degrees)
T: 2101.122 Epoch of periastron passage (year)
e: 0.637 Eccentricity
ω: 259.437 Longitude of periastron (degrees)
Start-Year: 1520.0 Year
End-Year: 2530.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1647
Position: 123033.75+094256.4 Epoch-2000 right ascension and declination
WDS-ID: 12306+0943 WDS designation
Discoverer Code: STF1647 Discover designation and components
ADS number: 8575 Aitken Double Star catalog
HD number: 108875 HD catalog number
Hipparcos number: 61035 Hipparcos catalog number
V1: 8.09 Magnitude of the primary
V2: 8.37 Magnitude of the secondary
Equinox: Equinox
Date: 2015 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF1647



WDS 6th Orbit including measures of STF1647

Image from the USNO WDS 6th Orbit Catalog (see Acknowledgements)


Ephemeris of STF1647
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     1.236    250.6
-------------------------
1520.0     1.540    128.3
1530.0     1.516    130.0
1540.0     1.493    131.9
1550.0     1.470    133.8
1560.0     1.447    135.7
1570.0     1.424    137.7
1580.0     1.402    139.8
1590.0     1.380    141.9
1600.0     1.360    144.1
1610.0     1.340    146.4
1620.0     1.321    148.7
1630.0     1.304    151.1
1640.0     1.287    153.6
1650.0     1.272    156.1
1660.0     1.258    158.7
1670.0     1.246    161.3
1680.0     1.235    164.0
1690.0     1.226    166.8
1700.0     1.218    169.5
1710.0     1.212    172.3
1720.0     1.208    175.2
1730.0     1.206    178.0
1740.0     1.205    180.8
1750.0     1.206    183.7
1760.0     1.209    186.5
1770.0     1.213    189.4
1780.0     1.219    192.1
1790.0     1.226    194.9
1800.0     1.235    197.6
1810.0     1.244    200.3
1820.0     1.255    203.0
1830.0     1.267    205.6
1840.0     1.279    208.1
1850.0     1.292    210.6
1860.0     1.305    213.1
1870.0     1.318    215.5
1880.0     1.331    217.9
1890.0     1.343    220.2
1900.0     1.355    222.5
1910.0     1.365    224.7
1920.0     1.374    226.9
1930.0     1.382    229.1
1940.0     1.387    231.2
1950.0     1.389    233.4
1960.0     1.388    235.5
1970.0     1.383    237.7
1980.0     1.372    239.9
1990.0     1.357    242.1
2000.0     1.334    244.4
2010.0     1.302    246.7
2020.0     1.261    249.2
2030.0     1.207    252.0
2040.0     1.138    255.0
2050.0     1.051    258.4
2060.0     0.942    262.6
2070.0     0.807    268.0
2080.0     0.647    275.9
2090.0     0.469    289.5
2100.0     0.315    318.3
2110.0     0.298      7.7
2120.0     0.440     40.7
2130.0     0.624     55.8
2140.0     0.802     64.1
2150.0     0.962     69.4
2160.0     1.102     73.3
2170.0     1.224     76.3
2180.0     1.329     78.9
2190.0     1.420     81.1
2200.0     1.498     83.0
2210.0     1.566     84.8
2220.0     1.624     86.4
2230.0     1.674     87.9
2240.0     1.716     89.4
2250.0     1.752     90.7
2260.0     1.781     92.1
2270.0     1.806     93.3
2280.0     1.825     94.6
2290.0     1.841     95.8
2300.0     1.852     97.0
2310.0     1.860     98.2
2320.0     1.864     99.4
2330.0     1.866    100.6
2340.0     1.864    101.8
2350.0     1.860    103.0
2360.0     1.854    104.2
2370.0     1.846    105.4
2380.0     1.836    106.6
2390.0     1.824    107.9
2400.0     1.810    109.1
2410.0     1.795    110.4
2420.0     1.778    111.7
2430.0     1.761    113.0
2440.0     1.742    114.4
2450.0     1.722    115.7
2460.0     1.701    117.1
2470.0     1.680    118.6
2480.0     1.658    120.1
2490.0     1.635    121.6
2500.0     1.612    123.2
2510.0     1.589    124.8
2520.0     1.565    126.4






Disclaimer
This result is provided without warranty. For all terms, see the Full Disclaimer. Copyright (C) 2025. The Double Star Calculator and the results generated are licensed under CC BY-NC-SA 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.


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