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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:22:55

Orbital Elements for A1101AB

WDS:	A1101AB	WDS ID/Discoverer
P:	35.390	Orbital period (years)
a:	0.26	Semi-major axis (arcseconds)
i:	122.6	Inclination (degrees)
Ω:	2.3	Longitude of ascending node (degrees)
T:	2000.720	Epoch of periastron passage (year)
e:	0.825	Eccentricity
ω:	301.3	Longitude of periastron (degrees)
Start-Year:	2008.0	Year
End-Year:	2042.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for A1101AB

Position:	141550.57+101759.3	Epoch-2000 right ascension and declination
WDS-ID:	14158+1018	WDS designation
Discoverer Code:	A1101AB	Discover designation and components
ADS number:	9185	Aitken Double Star catalog
HD number:	124864	HD catalog number
Hipparcos number:	69684	Hipparcos catalog number
V1:	9.69	Magnitude of the primary
V2:	10.32	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2018	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for A1101AB

WDS 6th Orbit including measures of A1101AB

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

Ephemeris of A1101AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.340    211.9
-------------------------
2008.0     0.198    254.9
2009.0     0.215    250.0
2010.0     0.232    245.8
2011.0     0.248    242.2
2012.0     0.262    239.0
2013.0     0.276    236.1
2014.0     0.288    233.5
2015.0     0.300    231.0
2016.0     0.310    228.8
2017.0     0.319    226.7
2018.0     0.327    224.7
2019.0     0.333    222.7
2020.0     0.338    220.9
2021.0     0.342    219.1
2022.0     0.344    217.3
2023.0     0.344    215.5
2024.0     0.343    213.7
2025.0     0.340    211.9
2026.0     0.334    210.1
2027.0     0.327    208.2
2028.0     0.317    206.2
2029.0     0.304    204.0
2030.0     0.288    201.6
2031.0     0.267    198.9
2032.0     0.241    195.6
2033.0     0.208    191.5
2034.0     0.165    185.5
2035.0     0.104    173.6
2036.0     0.026     72.4
2037.0     0.079    339.4
2038.0     0.099    313.0
2039.0     0.117    294.8
2040.0     0.135    281.5
2041.0     0.154    271.4

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.