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

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 19:12:38

Orbital Elements for IOT2AA,AB

WDS:	IOT2AA,AB	WDS ID/Discoverer
P:	7.926	Orbital period (years)
a:	0.008922000000000001	Semi-major axis (arcseconds)
i:	119.07	Inclination (degrees)
Ω:	353.87	Longitude of ascending node (degrees)
T:	2024.892	Epoch of periastron passage (year)
e:	0.8993	Eccentricity
ω:	227.44	Longitude of periastron (degrees)
Start-Year:	2022.0	Year
End-Year:	2028.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for IOT2AA,AB

Position:	202027.98+435116.3	Epoch-2000 right ascension and declination
WDS-ID:	20205+4351	WDS designation
Discoverer Code:	IOT2AA,AB	Discover designation and components
ADS number:	13736	Aitken Double Star catalog
HD number:	193793	HD catalog number
Hipparcos number:	100287	Hipparcos catalog number
V1:	6.85	Magnitude of the primary
V2:	14.4	Magnitude of the secondary
Equinox:		Equinox
Date:	2019	Date of last observation
Orbit grade:	2	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:	n	Flags

Double Star Orbit for IOT2AA,AB

WDS 6th Orbit including measures of IOT2AA,AB

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

Ephemeris of IOT2AA,AB

Click to expand/collapse ephemeris:

Year       Sep[“]   PA[°]
---------------------------------------------
2025.0     0.002      8.7
-------------------------
2022.0     0.011    320.5
2023.0     0.009    313.2
2024.0     0.005    296.8
2025.0     0.002      8.7
2026.0     0.010    340.6
2027.0     0.012    334.4

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.