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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:34:10

Orbital Elements for STF228
WDS: STF228 WDS ID/Discoverer
P: 145.410 Orbital period (years)
a: 0.89 Semi-major axis (arcseconds)
i: 63.75 Inclination (degrees)
Ω: 99.07 Longitude of ascending node (degrees)
T: 1899.070 Epoch of periastron passage (year)
e: 0.2626 Eccentricity
ω: 322.66 Longitude of periastron (degrees)
Start-Year: 1953.0 Year
End-Year: 2097.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for STF228
Position: 021402.43+472903.3 Epoch-2000 right ascension and declination
WDS-ID: 02140+4729 WDS designation
Discoverer Code: STF228 Discover designation and components
ADS number: 1709 Aitken Double Star catalog
HD number: 13594 HD catalog number
Hipparcos number: 10403 Hipparcos catalog number
V1: 6.56 Magnitude of the primary
V2: 7.21 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2015 Date of last observation
Orbit grade: 2 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for STF228



WDS 6th Orbit including measures of STF228

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


Ephemeris of STF228
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.440    325.1
-------------------------
1953.0     0.614    233.8
1954.0     0.633    236.0
1955.0     0.652    238.0
1956.0     0.671    239.9
1957.0     0.690    241.7
1958.0     0.709    243.5
1959.0     0.729    245.1
1960.0     0.748    246.6
1961.0     0.766    248.1
1962.0     0.785    249.5
1963.0     0.803    250.8
1964.0     0.821    252.1
1965.0     0.838    253.3
1966.0     0.855    254.4
1967.0     0.871    255.6
1968.0     0.887    256.7
1969.0     0.903    257.7
1970.0     0.918    258.7
1971.0     0.932    259.7
1972.0     0.946    260.6
1973.0     0.959    261.6
1974.0     0.972    262.5
1975.0     0.983    263.3
1976.0     0.994    264.2
1977.0     1.005    265.0
1978.0     1.015    265.8
1979.0     1.023    266.7
1980.0     1.032    267.4
1981.0     1.039    268.2
1982.0     1.046    269.0
1983.0     1.051    269.8
1984.0     1.056    270.5
1985.0     1.060    271.3
1986.0     1.063    272.0
1987.0     1.066    272.7
1988.0     1.067    273.5
1989.0     1.068    274.2
1990.0     1.067    274.9
1991.0     1.066    275.7
1992.0     1.063    276.4
1993.0     1.060    277.2
1994.0     1.056    277.9
1995.0     1.051    278.7
1996.0     1.044    279.4
1997.0     1.037    280.2
1998.0     1.029    281.0
1999.0     1.019    281.8
2000.0     1.009    282.6
2001.0     0.997    283.4
2002.0     0.985    284.3
2003.0     0.971    285.2
2004.0     0.956    286.1
2005.0     0.941    287.0
2006.0     0.924    287.9
2007.0     0.906    288.9
2008.0     0.887    290.0
2009.0     0.867    291.1
2010.0     0.846    292.2
2011.0     0.824    293.4
2012.0     0.800    294.7
2013.0     0.776    296.0
2014.0     0.751    297.5
2015.0     0.725    299.0
2016.0     0.699    300.7
2017.0     0.671    302.4
2018.0     0.643    304.4
2019.0     0.614    306.5
2020.0     0.585    308.8
2021.0     0.556    311.4
2022.0     0.526    314.3
2023.0     0.497    317.5
2024.0     0.468    321.1
2025.0     0.440    325.1
2026.0     0.413    329.8
2027.0     0.388    335.0
2028.0     0.366    340.9
2029.0     0.346    347.5
2030.0     0.331    354.8
2031.0     0.321      2.7
2032.0     0.315     11.0
2033.0     0.316     19.5
2034.0     0.322     27.7
2035.0     0.333     35.5
2036.0     0.349     42.8
2037.0     0.368     49.3
2038.0     0.390     55.1
2039.0     0.414     60.3
2040.0     0.439     65.0
2041.0     0.464     69.1
2042.0     0.490     72.7
2043.0     0.515     76.1
2044.0     0.539     79.1
2045.0     0.563     81.8
2046.0     0.584     84.4
2047.0     0.605     86.7
2048.0     0.623     89.0
2049.0     0.639     91.1
2050.0     0.654     93.1
2051.0     0.666     95.0
2052.0     0.676     96.8
2053.0     0.684     98.7
2054.0     0.690    100.4
2055.0     0.693    102.2
2056.0     0.695    103.9
2057.0     0.695    105.6
2058.0     0.692    107.4
2059.0     0.688    109.1
2060.0     0.683    110.9
2061.0     0.676    112.7
2062.0     0.667    114.6
2063.0     0.657    116.5
2064.0     0.646    118.5
2065.0     0.634    120.5
2066.0     0.621    122.6
2067.0     0.607    124.9
2068.0     0.593    127.2
2069.0     0.578    129.6
2070.0     0.563    132.2
2071.0     0.549    134.9
2072.0     0.534    137.8
2073.0     0.519    140.8
2074.0     0.505    144.0
2075.0     0.492    147.3
2076.0     0.480    150.9
2077.0     0.468    154.6
2078.0     0.458    158.5
2079.0     0.450    162.6
2080.0     0.443    166.8
2081.0     0.437    171.1
2082.0     0.434    175.5
2083.0     0.433    180.0
2084.0     0.433    184.5
2085.0     0.436    188.9
2086.0     0.440    193.3
2087.0     0.447    197.5
2088.0     0.455    201.6
2089.0     0.465    205.6
2090.0     0.477    209.4
2091.0     0.489    213.0
2092.0     0.504    216.3
2093.0     0.519    219.6
2094.0     0.535    222.6
2095.0     0.552    225.4
2096.0     0.569    228.1






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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