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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:41:45

Orbital Elements for JNN139

WDS:	JNN139	WDS ID/Discoverer
P:	11.000	Orbital period (years)
a:	0.168	Semi-major axis (arcseconds)
i:	115.9	Inclination (degrees)
Ω:	156.0	Longitude of ascending node (degrees)
T:	2023.730	Epoch of periastron passage (year)
e:	0.546	Eccentricity
ω:	282.7	Longitude of periastron (degrees)
Start-Year:	2020.0	Year
End-Year:	2030.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for JNN139

Position:	232617.07+275203.4	Epoch-2000 right ascension and declination
WDS-ID:	23263+2752	WDS designation
Discoverer Code:	JNN139	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	12.7	Magnitude of the primary
V2:	13.2	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2016	Date of last observation
Orbit grade:	3	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for JNN139

WDS 6th Orbit including measures of JNN139

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

Ephemeris of JNN139

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.125    142.7
-------------------------
2020.0     0.160      8.8
2021.0     0.170    356.6
2022.0     0.158    344.4
2023.0     0.097    324.1
2024.0     0.064    178.1
2025.0     0.125    142.7
2026.0     0.125    121.8
2027.0     0.113     97.9
2028.0     0.110     70.0
2029.0     0.120     43.9

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.