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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:32:22

Orbital Elements for STF1957

WDS:	STF1957	WDS ID/Discoverer
P:	1524.416	Orbital period (years)
a:	5.64316	Semi-major axis (arcseconds)
i:	91.064	Inclination (degrees)
Ω:	159.772	Longitude of ascending node (degrees)
T:	1746.680	Epoch of periastron passage (year)
e:	0.86815	Eccentricity
ω:	289.557	Longitude of periastron (degrees)
Start-Year:	1263.0	Year
End-Year:	2787.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF1957

Position:	153551.05+125458.7	Epoch-2000 right ascension and declination
WDS-ID:	15359+1255	WDS designation
Discoverer Code:	STF1957	Discover designation and components
ADS number:	9708	Aitken Double Star catalog
HD number:	139086	HD catalog number
Hipparcos number:	76368	Hipparcos catalog number
V1:	7.96	Magnitude of the primary
V2:	9.43	Magnitude of the secondary
Equinox:		Equinox
Date:	2008	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for STF1957

WDS 6th Orbit including measures of STF1957

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

Ephemeris of STF1957

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.174    106.9
-------------------------
1263.0     4.728    341.7
1273.0     4.751    341.6
1283.0     4.773    341.6
1293.0     4.793    341.6
1303.0     4.811    341.5
1313.0     4.828    341.5
1323.0     4.843    341.5
1333.0     4.855    341.4
1343.0     4.866    341.4
1353.0     4.875    341.4
1363.0     4.881    341.4
1373.0     4.885    341.3
1383.0     4.887    341.3
1393.0     4.887    341.3
1403.0     4.884    341.2
1413.0     4.878    341.2
1423.0     4.870    341.2
1433.0     4.858    341.1
1443.0     4.844    341.1
1453.0     4.827    341.1
1463.0     4.807    341.1
1473.0     4.783    341.0
1483.0     4.755    341.0
1493.0     4.724    341.0
1503.0     4.689    340.9
1513.0     4.649    340.9
1523.0     4.605    340.9
1533.0     4.556    340.8
1543.0     4.502    340.8
1553.0     4.442    340.8
1563.0     4.376    340.7
1573.0     4.304    340.7
1583.0     4.225    340.7
1593.0     4.138    340.6
1603.0     4.042    340.6
1613.0     3.937    340.5
1623.0     3.822    340.5
1633.0     3.694    340.4
1643.0     3.553    340.4
1653.0     3.397    340.3
1663.0     3.221    340.3
1673.0     3.024    340.2
1683.0     2.800    340.1
1693.0     2.542    340.0
1703.0     2.240    339.9
1713.0     1.877    339.7
1723.0     1.426    339.5
1733.0     0.838    338.9
1743.0     0.063    326.7
1753.0     0.714    160.4
1763.0     1.171    159.6
1773.0     1.404    159.2
1783.0     1.525    158.9
1793.0     1.584    158.6
1803.0     1.605    158.3
1813.0     1.601    158.1
1823.0     1.579    157.8
1833.0     1.544    157.5
1843.0     1.499    157.2
1853.0     1.446    156.9
1863.0     1.387    156.5
1873.0     1.323    156.2
1883.0     1.256    155.7
1893.0     1.185    155.3
1903.0     1.112    154.8
1913.0     1.036    154.2
1923.0     0.959    153.5
1933.0     0.881    152.6
1943.0     0.801    151.7
1953.0     0.721    150.5
1963.0     0.640    149.0
1973.0     0.559    147.0
1983.0     0.478    144.4
1993.0     0.399    140.8
2003.0     0.321    135.4
2013.0     0.247    126.6
2023.0     0.184    111.2
2033.0     0.145     84.4
2043.0     0.151     51.1
2053.0     0.198     27.2
2063.0     0.264     13.8
2073.0     0.339      6.1
2083.0     0.418      1.2
2093.0     0.498    357.9
2103.0     0.579    355.4
2113.0     0.661    353.6
2123.0     0.743    352.2
2133.0     0.825    351.1
2143.0     0.907    350.2
2153.0     0.989    349.4
2163.0     1.070    348.7
2173.0     1.151    348.2
2183.0     1.232    347.7
2193.0     1.312    347.3
2203.0     1.392    346.9
2213.0     1.472    346.5
2223.0     1.551    346.2
2233.0     1.629    346.0
2243.0     1.707    345.7
2253.0     1.785    345.5
2263.0     1.861    345.3
2273.0     1.938    345.1
2283.0     2.013    344.9
2293.0     2.088    344.7
2303.0     2.163    344.6
2313.0     2.237    344.5
2323.0     2.310    344.3
2333.0     2.382    344.2
2343.0     2.454    344.1
2353.0     2.525    344.0
2363.0     2.596    343.9
2373.0     2.665    343.8
2383.0     2.734    343.7
2393.0     2.802    343.6
2403.0     2.870    343.5
2413.0     2.936    343.4
2423.0     3.002    343.3
2433.0     3.067    343.2
2443.0     3.132    343.2
2453.0     3.195    343.1
2463.0     3.258    343.0
2473.0     3.319    343.0
2483.0     3.380    342.9
2493.0     3.440    342.9
2503.0     3.499    342.8
2513.0     3.558    342.7
2523.0     3.615    342.7
2533.0     3.671    342.6
2543.0     3.727    342.6
2553.0     3.781    342.5
2563.0     3.834    342.5
2573.0     3.887    342.4
2583.0     3.938    342.4
2593.0     3.989    342.4
2603.0     4.038    342.3
2613.0     4.086    342.3
2623.0     4.133    342.2
2633.0     4.179    342.2
2643.0     4.224    342.1
2653.0     4.268    342.1
2663.0     4.310    342.1
2673.0     4.351    342.0
2683.0     4.391    342.0
2693.0     4.430    342.0
2703.0     4.468    341.9
2713.0     4.504    341.9
2723.0     4.539    341.9
2733.0     4.572    341.8
2743.0     4.604    341.8
2753.0     4.634    341.8
2763.0     4.663    341.7
2773.0     4.691    341.7
2783.0     4.717    341.7

Disclaimer

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.