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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 17:58:08

Orbital Elements for HDS1500

WDS:	HDS1500	WDS ID/Discoverer
P:	85.000	Orbital period (years)
a:	0.213	Semi-major axis (arcseconds)
i:	65.2	Inclination (degrees)
Ω:	150.8	Longitude of ascending node (degrees)
T:	1978.670	Epoch of periastron passage (year)
e:	0.136	Eccentricity
ω:	317.6	Longitude of periastron (degrees)
Start-Year:	1983.0	Year
End-Year:	2067.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1500

Position:	102621.43+254436.1	Epoch-2000 right ascension and declination
WDS-ID:	10264+2545	WDS designation
Discoverer Code:	HDS1500	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.29	Magnitude of the primary
V2:	10.58	Magnitude of the secondary
Equinox:		Equinox
Date:	2018	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1500

WDS 6th Orbit including measures of HDS1500

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

Ephemeris of HDS1500

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.215    317.2
-------------------------
1983.0     0.178    142.9
1984.0     0.183    145.4
1985.0     0.187    147.7
1986.0     0.189    150.0
1987.0     0.191    152.2
1988.0     0.191    154.4
1989.0     0.190    156.6
1990.0     0.188    158.8
1991.0     0.185    161.1
1992.0     0.181    163.5
1993.0     0.176    166.0
1994.0     0.170    168.7
1995.0     0.164    171.5
1996.0     0.157    174.6
1997.0     0.150    178.0
1998.0     0.142    181.8
1999.0     0.134    186.0
2000.0     0.127    190.7
2001.0     0.120    195.9
2002.0     0.113    201.8
2003.0     0.107    208.4
2004.0     0.102    215.7
2005.0     0.099    223.7
2006.0     0.097    232.1
2007.0     0.097    240.6
2008.0     0.098    249.1
2009.0     0.101    257.2
2010.0     0.106    264.6
2011.0     0.112    271.4
2012.0     0.118    277.5
2013.0     0.126    282.9
2014.0     0.134    287.6
2015.0     0.142    291.8
2016.0     0.150    295.6
2017.0     0.159    298.9
2018.0     0.167    301.9
2019.0     0.175    304.7
2020.0     0.183    307.2
2021.0     0.190    309.5
2022.0     0.197    311.6
2023.0     0.204    313.6
2024.0     0.210    315.5
2025.0     0.215    317.2
2026.0     0.220    318.9
2027.0     0.224    320.5
2028.0     0.227    322.1
2029.0     0.230    323.6
2030.0     0.232    325.1
2031.0     0.233    326.6
2032.0     0.234    328.1
2033.0     0.233    329.5
2034.0     0.232    331.0
2035.0     0.230    332.5
2036.0     0.227    334.0
2037.0     0.224    335.6
2038.0     0.219    337.2
2039.0     0.214    338.9
2040.0     0.208    340.7
2041.0     0.201    342.6
2042.0     0.193    344.7
2043.0     0.185    346.9
2044.0     0.176    349.4
2045.0     0.166    352.1
2046.0     0.156    355.2
2047.0     0.146    358.7
2048.0     0.135      2.8
2049.0     0.124      7.5
2050.0     0.113     13.2
2051.0     0.103     20.0
2052.0     0.095     28.2
2053.0     0.087     37.9
2054.0     0.082     49.1
2055.0     0.080     61.2
2056.0     0.081     73.5
2057.0     0.085     85.1
2058.0     0.092     95.3
2059.0     0.100    104.1
2060.0     0.109    111.4
2061.0     0.119    117.6
2062.0     0.129    122.8
2063.0     0.139    127.2
2064.0     0.149    131.1
2065.0     0.157    134.5
2066.0     0.165    137.5

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.