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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:28:42

Orbital Elements for HU280

WDS:	HU280	WDS ID/Discoverer
P:	170.430	Orbital period (years)
a:	0.214	Semi-major axis (arcseconds)
i:	46.3	Inclination (degrees)
Ω:	315.1	Longitude of ascending node (degrees)
T:	1794.630	Epoch of periastron passage (year)
e:	0.054	Eccentricity
ω:	315.3	Longitude of periastron (degrees)
Start-Year:	1940.0	Year
End-Year:	2110.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HU280

Position:	214218.45+055443.0	Epoch-2000 right ascension and declination
WDS-ID:	21423+0555	WDS designation
Discoverer Code:	HU280	Discover designation and components
ADS number:	15236	Aitken Double Star catalog
HD number:	206512	HD catalog number
Hipparcos number:	107153	Hipparcos catalog number
V1:	8.33	Magnitude of the primary
V2:	8.50	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2000	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HU280

WDS 6th Orbit including measures of HU280

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

Ephemeris of HU280

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.153     40.3
-------------------------
1940.0     0.147    206.9
1941.0     0.146    210.0
1942.0     0.144    213.2
1943.0     0.143    216.4
1944.0     0.143    219.7
1945.0     0.142    223.0
1946.0     0.142    226.3
1947.0     0.142    229.6
1948.0     0.142    232.9
1949.0     0.143    236.2
1950.0     0.144    239.5
1951.0     0.145    242.7
1952.0     0.146    245.8
1953.0     0.147    249.0
1954.0     0.149    252.0
1955.0     0.151    255.0
1956.0     0.153    257.9
1957.0     0.155    260.7
1958.0     0.157    263.5
1959.0     0.159    266.1
1960.0     0.162    268.7
1961.0     0.164    271.3
1962.0     0.167    273.7
1963.0     0.169    276.1
1964.0     0.172    278.4
1965.0     0.174    280.6
1966.0     0.177    282.8
1967.0     0.179    284.9
1968.0     0.182    286.9
1969.0     0.184    288.9
1970.0     0.186    290.9
1971.0     0.188    292.8
1972.0     0.191    294.6
1973.0     0.193    296.5
1974.0     0.194    298.2
1975.0     0.196    300.0
1976.0     0.198    301.7
1977.0     0.199    303.4
1978.0     0.201    305.1
1979.0     0.202    306.7
1980.0     0.203    308.4
1981.0     0.204    310.0
1982.0     0.204    311.6
1983.0     0.205    313.2
1984.0     0.205    314.8
1985.0     0.206    316.3
1986.0     0.206    317.9
1987.0     0.206    319.5
1988.0     0.205    321.1
1989.0     0.205    322.6
1990.0     0.205    324.2
1991.0     0.204    325.8
1992.0     0.203    327.4
1993.0     0.202    329.1
1994.0     0.201    330.7
1995.0     0.200    332.4
1996.0     0.199    334.1
1997.0     0.197    335.8
1998.0     0.196    337.5
1999.0     0.194    339.2
2000.0     0.192    341.0
2001.0     0.190    342.9
2002.0     0.188    344.7
2003.0     0.187    346.6
2004.0     0.185    348.6
2005.0     0.183    350.5
2006.0     0.180    352.6
2007.0     0.178    354.6
2008.0     0.176    356.8
2009.0     0.174    358.9
2010.0     0.172      1.2
2011.0     0.170      3.4
2012.0     0.168      5.8
2013.0     0.166      8.2
2014.0     0.165     10.6
2015.0     0.163     13.1
2016.0     0.161     15.6
2017.0     0.160     18.2
2018.0     0.158     20.9
2019.0     0.157     23.5
2020.0     0.156     26.3
2021.0     0.155     29.0
2022.0     0.154     31.8
2023.0     0.154     34.6
2024.0     0.153     37.5
2025.0     0.153     40.3
2026.0     0.153     43.1
2027.0     0.153     46.0
2028.0     0.154     48.8
2029.0     0.154     51.6
2030.0     0.155     54.4
2031.0     0.156     57.2
2032.0     0.157     59.9
2033.0     0.158     62.6
2034.0     0.160     65.3
2035.0     0.161     67.9
2036.0     0.163     70.4
2037.0     0.165     72.9
2038.0     0.167     75.3
2039.0     0.169     77.7
2040.0     0.171     80.0
2041.0     0.173     82.3
2042.0     0.175     84.5
2043.0     0.177     86.6
2044.0     0.180     88.7
2045.0     0.182     90.8
2046.0     0.184     92.8
2047.0     0.187     94.7
2048.0     0.189     96.6
2049.0     0.191     98.4
2050.0     0.194    100.3
2051.0     0.196    102.0
2052.0     0.198    103.7
2053.0     0.200    105.4
2054.0     0.202    107.1
2055.0     0.204    108.7
2056.0     0.206    110.3
2057.0     0.208    111.8
2058.0     0.210    113.3
2059.0     0.212    114.8
2060.0     0.213    116.3
2061.0     0.215    117.8
2062.0     0.216    119.2
2063.0     0.217    120.6
2064.0     0.218    122.1
2065.0     0.219    123.5
2066.0     0.220    124.8
2067.0     0.221    126.2
2068.0     0.221    127.6
2069.0     0.222    128.9
2070.0     0.222    130.3
2071.0     0.222    131.6
2072.0     0.222    133.0
2073.0     0.222    134.3
2074.0     0.222    135.7
2075.0     0.221    137.1
2076.0     0.221    138.4
2077.0     0.220    139.8
2078.0     0.219    141.2
2079.0     0.218    142.6
2080.0     0.217    144.0
2081.0     0.216    145.4
2082.0     0.214    146.9
2083.0     0.213    148.3
2084.0     0.211    149.8
2085.0     0.209    151.3
2086.0     0.207    152.9
2087.0     0.205    154.4
2088.0     0.203    156.0
2089.0     0.201    157.7
2090.0     0.198    159.4
2091.0     0.196    161.1
2092.0     0.193    162.8
2093.0     0.191    164.6
2094.0     0.188    166.5
2095.0     0.185    168.4
2096.0     0.183    170.4
2097.0     0.180    172.4
2098.0     0.177    174.5
2099.0     0.174    176.7
2100.0     0.171    178.9
2101.0     0.169    181.2
2102.0     0.166    183.6
2103.0     0.163    186.1
2104.0     0.161    188.6
2105.0     0.158    191.3
2106.0     0.156    194.0
2107.0     0.154    196.8
2108.0     0.151    199.6
2109.0     0.150    202.6

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.