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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:13:07

Orbital Elements for HDS1789AA,AB

WDS:	HDS1789AA,AB	WDS ID/Discoverer
P:	36.340	Orbital period (years)
a:	0.161	Semi-major axis (arcseconds)
i:	38.0	Inclination (degrees)
Ω:	63.8	Longitude of ascending node (degrees)
T:	2019.770	Epoch of periastron passage (year)
e:	0.25	Eccentricity
ω:	239.1	Longitude of periastron (degrees)
Start-Year:	2007.0	Year
End-Year:	2043.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HDS1789AA,AB

Position:	124527.62-455145.2	Epoch-2000 right ascension and declination
WDS-ID:	12455-4552	WDS designation
Discoverer Code:	HDS1789AA,AB	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	110861	HD catalog number
Hipparcos number:	62252	Hipparcos catalog number
V1:	10.07	Magnitude of the primary
V2:	10.47	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2020	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for HDS1789AA,AB

WDS 6th Orbit including measures of HDS1789AA,AB

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

Ephemeris of HDS1789AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.131     28.2
-------------------------
2007.0     0.150    158.3
2008.0     0.148    167.1
2009.0     0.146    176.2
2010.0     0.146    185.4
2011.0     0.145    194.7
2012.0     0.145    204.0
2013.0     0.144    213.4
2014.0     0.142    222.9
2015.0     0.139    232.8
2016.0     0.134    243.3
2017.0     0.127    254.8
2018.0     0.118    267.8
2019.0     0.109    283.0
2020.0     0.101    300.9
2021.0     0.097    321.1
2022.0     0.099    341.5
2023.0     0.107      0.0
2024.0     0.118     15.5
2025.0     0.131     28.2
2026.0     0.143     38.6
2027.0     0.154     47.5
2028.0     0.164     55.2
2029.0     0.172     62.1
2030.0     0.177     68.6
2031.0     0.181     74.7
2032.0     0.183     80.5
2033.0     0.184     86.4
2034.0     0.183     92.2
2035.0     0.181     98.1
2036.0     0.178    104.1
2037.0     0.175    110.4
2038.0     0.171    117.0
2039.0     0.166    123.9
2040.0     0.162    131.2
2041.0     0.158    138.8
2042.0     0.154    146.9

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.