Orbital Distance (a=AUs)	Orbital Period (P=years)	Orbital Eccentricity (e)	Orbital Inclination (i=degrees)	Mass Estimate (Solar)	Diameter (Solar)	Density (Earths)	Surface Gravity (Earths)	Metallicity (Solar)
A-BC Mass Center	0.0	...	...	...	...	...	...	...	...
Keid A	184	~8,000	?	?	0.89	0.85	...	...	0.46-1.02
Inner H.Z. Edge A?	0.556	0.439	0	?	...	...	...	...	...
Outer H.Z. Edge A?	1.103	1.228	0	?	...	...	...	...	...
BC Mass Center	234	~8,000	?	?	...	...	...	...	...
Keid B	9.5	252.1	0.410	108.9	0.50	0.02	...	...	...
Keid C	25.5	252.1	0.410	108.9	0.20	0.28	...	...	...
Inner H.Z. Edge C?	0.06	0.031	0	108.9	...	...	...	...	...
Outer H.Z. Edge C?	0.11	0.083	0	108.9	...	...	...	...	...

NOTE: This animation attempts to relate the orbits (and possible habitable zones) of Stars A, B, and C in the 40 (Omicron2) Eridani 3 system -- also known as Keid -- to their respective centers of mass. The display shows the BC System's known orbital tilt (at an inclination of 108.9°) from the visual perspective of an observer on Earth. However, the orbital inclination of any planet that may be discovered someday in this star system would likely be different from those of the habitable zone orbits depicted here.

Star A and the binary pair BC have a wide separation of about 418 AUs and an orbital period of some 8,000 years. The stars in the BC pair have an "average" separation of about 35 AUs (of a semi-major axis) in a highly elliptical orbit (e= 0.410) that lasts about 252 years and swings between 21 and 49 AUs (Wulff D. Heintz, 1974).