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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:28:06

Orbital Elements for HDS2116AA,AB

WDS:	HDS2116AA,AB	WDS ID/Discoverer
P:	58.520	Orbital period (years)
a:	0.287	Semi-major axis (arcseconds)
i:	90.9	Inclination (degrees)
Ω:	156.1	Longitude of ascending node (degrees)
T:	2011.100	Epoch of periastron passage (year)
e:	0.304	Eccentricity
ω:	215.1	Longitude of periastron (degrees)
Start-Year:	1996.0	Year
End-Year:	2054.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS2116AA,AB

Position:	145909.70-420614.9	Epoch-2000 right ascension and declination
WDS-ID:	14592-4206	WDS designation
Discoverer Code:	HDS2116AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	132200	HD catalog number
Hipparcos number:	73334	Hipparcos catalog number
V1:	3.34	Magnitude of the primary
V2:	4.71	Magnitude of the secondary
Equinox:		Equinox
Date:	2019	Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HDS2116AA,AB

WDS 6th Orbit including measures of HDS2116AA,AB

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

Ephemeris of HDS2116AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.276    156.5
-------------------------
1996.0     0.005     74.6
1997.0     0.026    346.6
1998.0     0.053    341.1
1999.0     0.078    339.3
2000.0     0.103    338.4
2001.0     0.127    337.8
2002.0     0.149    337.4
2003.0     0.169    337.1
2004.0     0.185    336.9
2005.0     0.198    336.6
2006.0     0.207    336.5
2007.0     0.211    336.3
2008.0     0.209    336.1
2009.0     0.201    335.9
2010.0     0.187    335.7
2011.0     0.166    335.5
2012.0     0.139    335.2
2013.0     0.108    334.7
2014.0     0.074    333.7
2015.0     0.037    331.0
2016.0     0.004    232.6
2017.0     0.039    161.4
2018.0     0.076    158.8
2019.0     0.111    157.9
2020.0     0.145    157.4
2021.0     0.176    157.1
2022.0     0.205    156.9
2023.0     0.231    156.8
2024.0     0.255    156.6
2025.0     0.276    156.5
2026.0     0.294    156.4
2027.0     0.310    156.4
2028.0     0.323    156.3
2029.0     0.334    156.2
2030.0     0.342    156.1
2031.0     0.348    156.1
2032.0     0.352    156.0
2033.0     0.354    156.0
2034.0     0.353    155.9
2035.0     0.351    155.8
2036.0     0.347    155.8
2037.0     0.340    155.7
2038.0     0.332    155.6
2039.0     0.322    155.6
2040.0     0.311    155.5
2041.0     0.298    155.4
2042.0     0.283    155.3
2043.0     0.267    155.2
2044.0     0.249    155.1
2045.0     0.230    155.0
2046.0     0.210    154.8
2047.0     0.189    154.6
2048.0     0.166    154.4
2049.0     0.143    154.1
2050.0     0.118    153.6
2051.0     0.093    152.9
2052.0     0.068    151.7
2053.0     0.041    149.0

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.