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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:12:08

Orbital Elements for WRH12

WDS:	WRH12	WDS ID/Discoverer
P:	36.000	Orbital period (years)
a:	0.192	Semi-major axis (arcseconds)
i:	119.1	Inclination (degrees)
Ω:	199.9	Longitude of ascending node (degrees)
T:	1960.810	Epoch of periastron passage (year)
e:	0.91	Eccentricity
ω:	14.7	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 WRH12

Position:	123451.12+223745.1	Epoch-2000 right ascension and declination
WDS-ID:	12349+2238	WDS designation
Discoverer Code:	WRH12	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	109485	HD catalog number
Hipparcos number:	61394	Hipparcos catalog number
V1:	4.96	Magnitude of the primary
V2:	6.90	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2008	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for WRH12

WDS 6th Orbit including measures of WRH12

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

Ephemeris of WRH12

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.259      5.2
-------------------------
2007.0     0.319     17.5
2008.0     0.330     16.8
2009.0     0.339     16.1
2010.0     0.346     15.5
2011.0     0.352     14.9
2012.0     0.355     14.3
2013.0     0.358     13.7
2014.0     0.358     13.1
2015.0     0.357     12.5
2016.0     0.355     11.9
2017.0     0.351     11.3
2018.0     0.345     10.7
2019.0     0.338     10.1
2020.0     0.330      9.4
2021.0     0.319      8.7
2022.0     0.307      8.0
2023.0     0.293      7.1
2024.0     0.277      6.2
2025.0     0.259      5.2
2026.0     0.239      4.0
2027.0     0.216      2.6
2028.0     0.190      0.8
2029.0     0.161    358.3
2030.0     0.127    354.7
2031.0     0.087    348.0
2032.0     0.039    326.5
2033.0     0.013    115.6
2034.0     0.080     36.4
2035.0     0.130     29.4
2036.0     0.170     26.1
2037.0     0.202     23.9
2038.0     0.230     22.3
2039.0     0.254     21.1
2040.0     0.274     20.0
2041.0     0.291     19.1
2042.0     0.307     18.2

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.