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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:36:29

Orbital Elements for NOI2

WDS:	NOI2	WDS ID/Discoverer
P:	1.546	Orbital period (years)
a:	0.032100000000000004	Semi-major axis (arcseconds)
i:	12.1	Inclination (degrees)
Ω:	9.1	Longitude of ascending node (degrees)
T:	1996.105	Epoch of periastron passage (year)
e:	0.522	Eccentricity
ω:	351.9	Longitude of periastron (degrees)
Start-Year:	2025.0	Year
End-Year:	2025.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for NOI2

Position:	160846.20+445605.3	Epoch-2000 right ascension and declination
WDS-ID:	16088+4456	WDS designation
Discoverer Code:	NOI2	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	145389	HD catalog number
Hipparcos number:	79101	Hipparcos catalog number
V1:	4.23	Magnitude of the primary
V2:	.	Magnitude of the secondary
Equinox:	2000	Equinox
Date:	2005	Date of last observation
Orbit grade:	1	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for NOI2

WDS 6th Orbit including measures of NOI2

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

Ephemeris of NOI2

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.044    207.7
-------------------------

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.