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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:41:20

Orbital Elements for HEI88

WDS:	HEI88	WDS ID/Discoverer
P:	33.830	Orbital period (years)
a:	0.171	Semi-major axis (arcseconds)
i:	26.5	Inclination (degrees)
Ω:	113.3	Longitude of ascending node (degrees)
T:	2002.882	Epoch of periastron passage (year)
e:	0.629	Eccentricity
ω:	273.8	Longitude of periastron (degrees)
Start-Year:	2009.0	Year
End-Year:	2041.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for HEI88

Position:	232052.91+164239.2	Epoch-2000 right ascension and declination
WDS-ID:	23209+1643	WDS designation
Discoverer Code:	HEI88	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	220077	HD catalog number
Hipparcos number:	115279	Hipparcos catalog number
V1:	9.05	Magnitude of the primary
V2:	9.84	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2022	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for HEI88

WDS 6th Orbit including measures of HEI88

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

Ephemeris of HEI88

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.236    226.3
-------------------------
2009.0     0.179    160.7
2010.0     0.192    167.0
2011.0     0.204    172.5
2012.0     0.214    177.4
2013.0     0.223    182.0
2014.0     0.230    186.2
2015.0     0.236    190.2
2016.0     0.241    194.0
2017.0     0.245    197.7
2018.0     0.247    201.3
2019.0     0.249    204.8
2020.0     0.249    208.3
2021.0     0.249    211.7
2022.0     0.247    215.2
2023.0     0.245    218.8
2024.0     0.241    222.5
2025.0     0.236    226.3
2026.0     0.229    230.3
2027.0     0.222    234.6
2028.0     0.213    239.1
2029.0     0.202    244.2
2030.0     0.190    249.8
2031.0     0.176    256.3
2032.0     0.159    264.0
2033.0     0.140    273.7
2034.0     0.117    286.9
2035.0     0.091    307.0
2036.0     0.065    343.9
2037.0     0.059     46.4
2038.0     0.080     94.0
2039.0     0.106    119.2
2040.0     0.129    134.8

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.