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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:39:47

Orbital Elements for HDS2347

WDS:	HDS2347	WDS ID/Discoverer
P:	85.000	Orbital period (years)
a:	0.182	Semi-major axis (arcseconds)
i:	141.1	Inclination (degrees)
Ω:	162.3	Longitude of ascending node (degrees)
T:	2026.410	Epoch of periastron passage (year)
e:	0.2	Eccentricity
ω:	84.2	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 HDS2347

Position:	163632.05-670017.5	Epoch-2000 right ascension and declination
WDS-ID:	16365-6700	WDS designation
Discoverer Code:	HDS2347	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	148976	HD catalog number
Hipparcos number:	81320	Hipparcos catalog number
V1:	7.25	Magnitude of the primary
V2:	9.83	Magnitude of the secondary
Equinox:		Equinox
Date:	2021	Date of last observation
Orbit grade:	4	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS2347

WDS 6th Orbit including measures of HDS2347

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

Ephemeris of HDS2347

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.116     91.2
-------------------------
1983.0     0.171    263.1
1984.0     0.170    259.4
1985.0     0.170    255.7
1986.0     0.170    252.0
1987.0     0.170    248.3
1988.0     0.170    244.6
1989.0     0.170    240.9
1990.0     0.170    237.2
1991.0     0.171    233.5
1992.0     0.171    229.8
1993.0     0.172    226.2
1994.0     0.173    222.6
1995.0     0.174    219.1
1996.0     0.175    215.6
1997.0     0.176    212.1
1998.0     0.177    208.7
1999.0     0.178    205.3
2000.0     0.179    201.9
2001.0     0.180    198.6
2002.0     0.180    195.3
2003.0     0.181    192.0
2004.0     0.181    188.7
2005.0     0.181    185.4
2006.0     0.180    182.1
2007.0     0.180    178.8
2008.0     0.179    175.5
2009.0     0.177    172.1
2010.0     0.175    168.7
2011.0     0.173    165.2
2012.0     0.171    161.6
2013.0     0.168    157.8
2014.0     0.164    153.9
2015.0     0.160    149.9
2016.0     0.156    145.6
2017.0     0.152    141.1
2018.0     0.147    136.3
2019.0     0.142    131.1
2020.0     0.137    125.6
2021.0     0.132    119.6
2022.0     0.127    113.2
2023.0     0.123    106.3
2024.0     0.119     99.0
2025.0     0.116     91.2
2026.0     0.114     83.1
2027.0     0.113     74.8
2028.0     0.114     66.5
2029.0     0.115     58.4
2030.0     0.118     50.5
2031.0     0.122     43.1
2032.0     0.126     36.1
2033.0     0.131     29.6
2034.0     0.136     23.6
2035.0     0.141     18.0
2036.0     0.146     12.8
2037.0     0.152      8.0
2038.0     0.157      3.5
2039.0     0.161    359.3
2040.0     0.166    355.3
2041.0     0.170    351.5
2042.0     0.173    347.8
2043.0     0.177    344.3
2044.0     0.179    341.0
2045.0     0.182    337.7
2046.0     0.184    334.5
2047.0     0.185    331.3
2048.0     0.186    328.2
2049.0     0.187    325.2
2050.0     0.188    322.1
2051.0     0.188    319.1
2052.0     0.188    316.1
2053.0     0.187    313.0
2054.0     0.187    310.0
2055.0     0.186    306.9
2056.0     0.185    303.8
2057.0     0.184    300.6
2058.0     0.183    297.5
2059.0     0.182    294.2
2060.0     0.180    291.0
2061.0     0.179    287.6
2062.0     0.178    284.3
2063.0     0.176    280.9
2064.0     0.175    277.4
2065.0     0.174    273.9
2066.0     0.173    270.3

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.