<Dd> v t e = (v e 2 − v o) 2 + v e 1 2 = (k v e 2) 2 + v e 1 2 (\ displaystyle v_ (te) = (\ sqrt ((v_ (e2) - v_ (o)) ^ (2) + v_ (e1) ^ (2))) = (\ sqrt (\ left (kv_ (e2) \ right) ^ (2) + v_ (e1) ^ (2)))) </Dd> <P> where k = 1 − 1 2 ≈ 0.2929 (\ displaystyle k = 1 - (\ frac (1) (\ sqrt (2))) \ approx 0.2929) for circular orbits . </P> <Table> <Tr> <Th> Location </Th> <Th> Relative to </Th> <Th> V (km / s) </Th> <Td> </Td> <Th> Location </Th> <Th> Relative to </Th> <Th> V (km / s) </Th> <Th> System escape V (km / s) </Th> </Tr> <Tr> <Td> On the Sun </Td> <Td> The Sun's gravity </Td> <Td> 617.5 </Td> </Tr> <Tr> <Td> On Mercury </Td> <Td> Mercury's gravity </Td> <Td> 4.25 </Td> <Td> At Mercury </Td> <Td> The Sun's gravity </Td> <Td> ~ 67.7 </Td> <Td> ~ 20.3 </Td> </Tr> <Tr> <Td> On Venus </Td> <Td> Venus's gravity </Td> <Td> 10.36 </Td> <Td> At Venus </Td> <Td> The Sun's gravity </Td> <Td> 49.5 </Td> <Td> 17.8 </Td> </Tr> <Tr> <Td> On Earth </Td> <Td> Earth's gravity </Td> <Td> 11.186 </Td> <Td> At Earth / the Moon </Td> <Td> The Sun's gravity </Td> <Td> 42.1 </Td> <Td> 16.6 </Td> </Tr> <Tr> <Td> On the Moon </Td> <Td> The Moon's gravity </Td> <Td> 2.38 </Td> <Td> At the Moon </Td> <Td> The Earth's gravity </Td> <Td> 1.4 </Td> <Td> 2.42 </Td> </Tr> <Tr> <Td> On Mars </Td> <Td> Mars' gravity </Td> <Td> 5.03 </Td> <Td> At Mars </Td> <Td> The Sun's gravity </Td> <Td> 34.1 </Td> <Td> 11.2 </Td> </Tr> <Tr> <Td> On Ceres </Td> <Td> Ceres's gravity </Td> <Td> 0.51 </Td> <Td> At Ceres </Td> <Td> The Sun's gravity </Td> <Td> 25.3 </Td> <Td> 7.4 </Td> </Tr> <Tr> <Td> On Jupiter </Td> <Td> Jupiter's gravity </Td> <Td> 60.20 </Td> <Td> At Jupiter </Td> <Td> The Sun's gravity </Td> <Td> 18.5 </Td> <Td> 60.4 </Td> </Tr> <Tr> <Td> On Io </Td> <Td> Io's gravity </Td> <Td> 2.558 </Td> <Td> At Io </Td> <Td> Jupiter's gravity </Td> <Td> 24.5 </Td> <Td> 7.6 </Td> </Tr> <Tr> <Td> On Europa </Td> <Td> Europa's gravity </Td> <Td> 2.025 </Td> <Td> At Europa </Td> <Td> Jupiter's gravity </Td> <Td> 19.4 </Td> <Td> 6.0 </Td> </Tr> <Tr> <Td> On Ganymede </Td> <Td> Ganymede's gravity </Td> <Td> 2.741 </Td> <Td> At Ganymede </Td> <Td> Jupiter's gravity </Td> <Td> 15.4 </Td> <Td> 5.3 </Td> </Tr> <Tr> <Td> On Callisto </Td> <Td> Callisto's gravity </Td> <Td> 2.440 </Td> <Td> At Callisto </Td> <Td> Jupiter's gravity </Td> <Td> 11.6 </Td> <Td> 4.2 </Td> </Tr> <Tr> <Td> On Saturn </Td> <Td> Saturn's gravity </Td> <Td> 36.09 </Td> <Td> At Saturn </Td> <Td> The Sun's gravity </Td> <Td> 13.6 </Td> <Td> 36.3 </Td> </Tr> <Tr> <Td> On Titan </Td> <Td> Titan's gravity </Td> <Td> 2.639 </Td> <Td> At Titan </Td> <Td> Saturn's gravity </Td> <Td> 7.8 </Td> <Td> 3.5 </Td> </Tr> <Tr> <Td> On Uranus </Td> <Td> Uranus' gravity </Td> <Td> 21.38 </Td> <Td> At Uranus </Td> <Td> The Sun's gravity </Td> <Td> 9.6 </Td> <Td> 21.5 </Td> </Tr> <Tr> <Td> On Neptune </Td> <Td> Neptune's gravity </Td> <Td> 23.56 </Td> <Td> At Neptune </Td> <Td> The Sun's gravity </Td> <Td> 7.7 </Td> <Td> 23.7 </Td> </Tr> <Tr> <Td> On Triton </Td> <Td> Triton's gravity </Td> <Td> 1.455 </Td> <Td> At Triton </Td> <Td> Neptune's gravity </Td> <Td> 6.2 </Td> <Td> 2.33 </Td> </Tr> <Tr> <Td> On Pluto </Td> <Td> Pluto's gravity </Td> <Td> 1.23 </Td> <Td> At Pluto </Td> <Td> The Sun's gravity </Td> <Td> ~ 6.6 </Td> <Td> ~ 2.3 </Td> </Tr> <Tr> <Td> At Solar System galactic radius </Td> <Td> The Milky Way's gravity </Td> <Td> 492--594 </Td> </Tr> <Tr> <Td> On the event horizon </Td> <Td> A black hole's gravity </Td> <Td> 299,792.458 (speed of light) </Td> </Tr> </Table> <Tr> <Th> Location </Th> <Th> Relative to </Th> <Th> V (km / s) </Th> <Td> </Td> <Th> Location </Th> <Th> Relative to </Th> <Th> V (km / s) </Th> <Th> System escape V (km / s) </Th> </Tr>

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