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

Double Star Calculator - Orbit

- Revision: $Rev: 1216 $
- Report created: 2025-07-11 16:51:16

Orbital Elements for CHR9AA,AB
WDS: CHR9AA,AB WDS ID/Discoverer
P: 111.018 Orbital period (years)
a: 0.648 Semi-major axis (arcseconds)
i: 93.3 Inclination (degrees)
Ω: 58.9 Longitude of ascending node (degrees)
T: 2000.330 Epoch of periastron passage (year)
e: 0.77 Eccentricity
ω: 274.9 Longitude of periastron (degrees)
Start-Year: 1970.0 Year
End-Year: 2080.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for CHR9AA,AB
Position: 032635.36+284255.2 Epoch-2000 right ascension and declination
WDS-ID: 03266+2843 WDS designation
Discoverer Code: CHR9AA,AB Discover designation and components
ADS number: . Aitken Double Star catalog
HD number: 21242 HD catalog number
Hipparcos number: 16042 Hipparcos catalog number
V1: 6.69 Magnitude of the primary
V2: 9.84 Magnitude of the secondary
Equinox: Equinox
Date: 2009 Date of last observation
Orbit grade: 5 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: n Flags

Double Star Orbit for CHR9AA,AB



WDS 6th Orbit including measures of CHR9AA,AB

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


Ephemeris of CHR9AA,AB
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.296     49.5
-------------------------
1970.0     0.392    246.5
1971.0     0.400    246.2
1972.0     0.408    245.9
1973.0     0.415    245.6
1974.0     0.422    245.3
1975.0     0.429    245.0
1976.0     0.435    244.7
1977.0     0.440    244.5
1978.0     0.445    244.2
1979.0     0.450    244.0
1980.0     0.453    243.7
1981.0     0.456    243.5
1982.0     0.458    243.2
1983.0     0.459    243.0
1984.0     0.459    242.8
1985.0     0.458    242.5
1986.0     0.456    242.3
1987.0     0.452    242.0
1988.0     0.447    241.8
1989.0     0.440    241.5
1990.0     0.430    241.3
1991.0     0.418    241.0
1992.0     0.404    240.7
1993.0     0.385    240.4
1994.0     0.362    240.0
1995.0     0.334    239.6
1996.0     0.298    239.1
1997.0     0.252    238.5
1998.0     0.193    237.4
1999.0     0.116    235.2
2000.0     0.022    216.4
2001.0     0.079     64.5
2002.0     0.162     60.7
2003.0     0.223     59.4
2004.0     0.268     58.5
2005.0     0.300     57.9
2006.0     0.324     57.4
2007.0     0.341     56.9
2008.0     0.354     56.5
2009.0     0.363     56.1
2010.0     0.369     55.8
2011.0     0.372     55.4
2012.0     0.374     55.0
2013.0     0.374     54.7
2014.0     0.372     54.3
2015.0     0.369     54.0
2016.0     0.365     53.6
2017.0     0.360     53.2
2018.0     0.354     52.8
2019.0     0.347     52.4
2020.0     0.340     52.0
2021.0     0.332     51.5
2022.0     0.324     51.1
2023.0     0.315     50.6
2024.0     0.306     50.1
2025.0     0.296     49.5
2026.0     0.286     48.9
2027.0     0.276     48.3
2028.0     0.265     47.6
2029.0     0.254     46.9
2030.0     0.243     46.1
2031.0     0.232     45.2
2032.0     0.221     44.2
2033.0     0.209     43.1
2034.0     0.198     41.9
2035.0     0.186     40.6
2036.0     0.175     39.0
2037.0     0.163     37.3
2038.0     0.151     35.2
2039.0     0.140     32.9
2040.0     0.129     30.1
2041.0     0.117     26.8
2042.0     0.107     22.8
2043.0     0.097     17.9
2044.0     0.087     12.0
2045.0     0.079      4.8
2046.0     0.073    356.1
2047.0     0.068    345.9
2048.0     0.065    334.5
2049.0     0.066    322.8
2050.0     0.069    311.6
2051.0     0.074    301.7
2052.0     0.081    293.3
2053.0     0.089    286.4
2054.0     0.099    280.7
2055.0     0.109    276.0
2056.0     0.120    272.2
2057.0     0.131    269.0
2058.0     0.142    266.3
2059.0     0.154    264.0
2060.0     0.166    262.1
2061.0     0.177    260.4
2062.0     0.189    258.9
2063.0     0.201    257.6
2064.0     0.213    256.4
2065.0     0.224    255.4
2066.0     0.236    254.4
2067.0     0.248    253.6
2068.0     0.259    252.8
2069.0     0.271    252.1
2070.0     0.282    251.4
2071.0     0.293    250.8
2072.0     0.304    250.2
2073.0     0.314    249.7
2074.0     0.325    249.2
2075.0     0.335    248.8
2076.0     0.345    248.3
2077.0     0.355    247.9
2078.0     0.365    247.5
2079.0     0.374    247.2






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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