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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 19:33:07

Orbital Elements for A2694
WDS: A2694 WDS ID/Discoverer
P: 94.880 Orbital period (years)
a: 0.435 Semi-major axis (arcseconds)
i: 53.0 Inclination (degrees)
Ω: 52.9 Longitude of ascending node (degrees)
T: 2000.456 Epoch of periastron passage (year)
e: 0.95 Eccentricity
ω: 287.6 Longitude of periastron (degrees)
Start-Year: 1978.0 Year
End-Year: 2072.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A2694
Position: 222229.73-072726.5 Epoch-2000 right ascension and declination
WDS-ID: 22225-0727 WDS designation
Discoverer Code: A2694 Discover designation and components
ADS number: 15877 Aitken Double Star catalog
HD number: 212191 HD catalog number
Hipparcos number: . Hipparcos catalog number
V1: 10.1 Magnitude of the primary
V2: 10.2 Magnitude of the secondary
Equinox: 2000 Equinox
Date: 2022 Date of last observation
Orbit grade: 4 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A2694



WDS 6th Orbit including measures of A2694

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


Ephemeris of A2694
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.442    158.6
-------------------------
1978.0     0.483    182.6
1979.0     0.475    183.2
1980.0     0.467    183.8
1981.0     0.458    184.4
1982.0     0.449    185.0
1983.0     0.439    185.7
1984.0     0.428    186.5
1985.0     0.417    187.2
1986.0     0.405    188.0
1987.0     0.393    188.9
1988.0     0.379    189.8
1989.0     0.365    190.7
1990.0     0.349    191.8
1991.0     0.333    193.0
1992.0     0.315    194.2
1993.0     0.296    195.7
1994.0     0.275    197.3
1995.0     0.251    199.3
1996.0     0.225    201.7
1997.0     0.196    204.7
1998.0     0.162    209.0
1999.0     0.118    215.9
2000.0     0.054    235.3
2001.0     0.054     77.3
2002.0     0.093    103.0
2003.0     0.122    114.8
2004.0     0.148    122.3
2005.0     0.171    127.6
2006.0     0.192    131.7
2007.0     0.212    135.1
2008.0     0.230    137.8
2009.0     0.248    140.2
2010.0     0.265    142.2
2011.0     0.280    144.1
2012.0     0.295    145.7
2013.0     0.310    147.2
2014.0     0.324    148.5
2015.0     0.337    149.7
2016.0     0.349    150.9
2017.0     0.361    152.0
2018.0     0.373    153.0
2019.0     0.384    153.9
2020.0     0.395    154.8
2021.0     0.405    155.6
2022.0     0.415    156.4
2023.0     0.424    157.2
2024.0     0.433    157.9
2025.0     0.442    158.6
2026.0     0.450    159.3
2027.0     0.458    160.0
2028.0     0.465    160.6
2029.0     0.473    161.2
2030.0     0.479    161.8
2031.0     0.486    162.4
2032.0     0.492    163.0
2033.0     0.498    163.5
2034.0     0.504    164.0
2035.0     0.509    164.6
2036.0     0.514    165.1
2037.0     0.519    165.6
2038.0     0.523    166.1
2039.0     0.527    166.6
2040.0     0.531    167.1
2041.0     0.534    167.5
2042.0     0.537    168.0
2043.0     0.540    168.5
2044.0     0.543    168.9
2045.0     0.545    169.4
2046.0     0.547    169.8
2047.0     0.549    170.3
2048.0     0.550    170.7
2049.0     0.551    171.2
2050.0     0.552    171.6
2051.0     0.553    172.1
2052.0     0.553    172.5
2053.0     0.553    173.0
2054.0     0.553    173.4
2055.0     0.552    173.8
2056.0     0.551    174.3
2057.0     0.550    174.7
2058.0     0.548    175.2
2059.0     0.546    175.6
2060.0     0.544    176.1
2061.0     0.541    176.5
2062.0     0.538    177.0
2063.0     0.535    177.5
2064.0     0.532    177.9
2065.0     0.528    178.4
2066.0     0.523    178.9
2067.0     0.519    179.4
2068.0     0.513    179.9
2069.0     0.508    180.4
2070.0     0.502    181.0
2071.0     0.496    181.5






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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