Statements (22)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
astronomical concept
|
| gptkbp:alsoKnownAs |
gptkb:Roche_sphere
|
| gptkbp:appliesTo |
stars
moons planets |
| gptkbp:describes |
region around an astronomical body where it dominates the attraction of satellites
|
| gptkbp:determines |
region where satellites can stably orbit a planet
|
| gptkbp:example |
Jupiter's Hill sphere radius is about 53 million km
Earth's Hill sphere radius is about 1.5 million km |
| gptkbp:form |
r ≈ a (m/3M)^{1/3}
|
| https://www.w3.org/2000/01/rdf-schema#label |
Hill sphere
|
| gptkbp:location |
M is the mass of the larger body
a is the semi-major axis of the smaller body m is the mass of the smaller body r is the Hill radius |
| gptkbp:namedAfter |
gptkb:George_William_Hill
|
| gptkbp:relatedTo |
gptkb:Roche_limit
sphere of influence |
| gptkbp:usedIn |
celestial mechanics
orbital dynamics |
| gptkbp:bfsParent |
gptkb:George_William_Hill
|
| gptkbp:bfsLayer |
5
|