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

Double Star Calculator - Orbit

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

Orbital Elements for A1789
WDS: A1789 WDS ID/Discoverer
P: 143.440 Orbital period (years)
a: 0.191 Semi-major axis (arcseconds)
i: 137.8 Inclination (degrees)
Ω: 67.9 Longitude of ascending node (degrees)
T: 1962.712 Epoch of periastron passage (year)
e: 0.42 Eccentricity
ω: 105.4 Longitude of periastron (degrees)
Start-Year: 1954.0 Year
End-Year: 2096.0 Year
Epoch: 2025.0 Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1789
Position: 133029.62+072910.1 Epoch-2000 right ascension and declination
WDS-ID: 13305+0729 WDS designation
Discoverer Code: A1789 Discover designation and components
ADS number: 8926 Aitken Double Star catalog
HD number: 117478 HD catalog number
Hipparcos number: 65897 Hipparcos catalog number
V1: 9.14 Magnitude of the primary
V2: 9.39 Magnitude of the secondary
Equinox: Equinox
Date: 2018 Date of last observation
Orbit grade: 3 Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags: Flags

Double Star Orbit for A1789



WDS 6th Orbit including measures of A1789

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


Ephemeris of A1789
Click to expand/collapse ephemeris:
Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.199    151.6
-------------------------
1954.0     0.107     25.0
1955.0     0.102     19.3
1956.0     0.097     13.1
1957.0     0.092      6.1
1958.0     0.088    358.5
1959.0     0.085    350.3
1960.0     0.083    341.7
1961.0     0.083    332.7
1962.0     0.083    323.7
1963.0     0.085    315.0
1964.0     0.088    306.8
1965.0     0.091    299.1
1966.0     0.096    292.1
1967.0     0.100    285.6
1968.0     0.105    279.8
1969.0     0.110    274.5
1970.0     0.116    269.7
1971.0     0.120    265.3
1972.0     0.125    261.2
1973.0     0.130    257.4
1974.0     0.134    253.9
1975.0     0.138    250.6
1976.0     0.142    247.4
1977.0     0.146    244.5
1978.0     0.149    241.6
1979.0     0.152    238.9
1980.0     0.155    236.3
1981.0     0.157    233.8
1982.0     0.160    231.3
1983.0     0.162    229.0
1984.0     0.164    226.6
1985.0     0.166    224.4
1986.0     0.168    222.2
1987.0     0.169    220.0
1988.0     0.171    217.9
1989.0     0.172    215.8
1990.0     0.173    213.7
1991.0     0.174    211.7
1992.0     0.176    209.7
1993.0     0.177    207.7
1994.0     0.177    205.7
1995.0     0.178    203.8
1996.0     0.179    201.9
1997.0     0.180    199.9
1998.0     0.181    198.1
1999.0     0.181    196.2
2000.0     0.182    194.3
2001.0     0.183    192.5
2002.0     0.183    190.6
2003.0     0.184    188.8
2004.0     0.185    187.0
2005.0     0.185    185.2
2006.0     0.186    183.4
2007.0     0.186    181.6
2008.0     0.187    179.8
2009.0     0.188    178.1
2010.0     0.188    176.3
2011.0     0.189    174.6
2012.0     0.189    172.9
2013.0     0.190    171.2
2014.0     0.191    169.5
2015.0     0.191    167.8
2016.0     0.192    166.1
2017.0     0.193    164.5
2018.0     0.194    162.8
2019.0     0.194    161.2
2020.0     0.195    159.6
2021.0     0.196    157.9
2022.0     0.197    156.3
2023.0     0.197    154.8
2024.0     0.198    153.2
2025.0     0.199    151.6
2026.0     0.200    150.1
2027.0     0.201    148.5
2028.0     0.201    147.0
2029.0     0.202    145.5
2030.0     0.203    144.0
2031.0     0.204    142.5
2032.0     0.205    141.0
2033.0     0.205    139.6
2034.0     0.206    138.1
2035.0     0.207    136.7
2036.0     0.208    135.3
2037.0     0.209    133.8
2038.0     0.209    132.4
2039.0     0.210    131.0
2040.0     0.211    129.6
2041.0     0.212    128.3
2042.0     0.212    126.9
2043.0     0.213    125.5
2044.0     0.214    124.2
2045.0     0.214    122.8
2046.0     0.215    121.5
2047.0     0.215    120.2
2048.0     0.216    118.9
2049.0     0.216    117.5
2050.0     0.217    116.2
2051.0     0.217    114.9
2052.0     0.218    113.6
2053.0     0.218    112.3
2054.0     0.218    111.0
2055.0     0.218    109.7
2056.0     0.218    108.4
2057.0     0.218    107.1
2058.0     0.218    105.9
2059.0     0.218    104.6
2060.0     0.218    103.3
2061.0     0.218    102.0
2062.0     0.217    100.7
2063.0     0.217     99.4
2064.0     0.216     98.0
2065.0     0.215     96.7
2066.0     0.215     95.4
2067.0     0.214     94.0
2068.0     0.213     92.7
2069.0     0.212     91.3
2070.0     0.210     89.9
2071.0     0.209     88.5
2072.0     0.207     87.1
2073.0     0.206     85.7
2074.0     0.204     84.2
2075.0     0.202     82.7
2076.0     0.200     81.2
2077.0     0.198     79.6
2078.0     0.195     78.0
2079.0     0.192     76.4
2080.0     0.189     74.7
2081.0     0.186     73.0
2082.0     0.183     71.2
2083.0     0.180     69.3
2084.0     0.176     67.4
2085.0     0.172     65.3
2086.0     0.168     63.2
2087.0     0.164     61.0
2088.0     0.159     58.6
2089.0     0.154     56.1
2090.0     0.149     53.4
2091.0     0.144     50.5
2092.0     0.139     47.5
2093.0     0.133     44.1
2094.0     0.127     40.5
2095.0     0.121     36.5






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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