Yes. All major bodies in the solar system have noticeable gravity. Ganymede and Callisto have surface gravities of 14% and 12% of Earth's gravity respectively.
Io Europa Ganymede Callisto
From Brightest to Dimmest: Ganymede Io Europa Callisto Use JPL's HORIZONS web ephemeris to look up apparent magnitudes of jovian satellites.
Io, Europa, Ganymede and Callisto are the four satellites that orbit Jupiter.
Ganymede, another moon of Jupiter, is similar in size to Callisto. Both moons are approximately the same size, with Ganymede being slightly larger with a diameter of about 5,268 kilometers compared to Callisto's diameter of about 4,821 kilometers.
Ganymede is the brightest moon out of Ganymede, Europa, Io, and Callisto. It is the largest moon of Jupiter and is even larger than the planet Mercury. Ganymede's surface is composed of a mix of rocky material and water ice, which likely contributes to its brightness.
it is ganyme and callisto
Ganymede is the biggest moon in the solar system.
going by the magnitude scale, Callisto's the brightest. Io 5.5 Europa 5.7 Ganymede 5.1 Callisto 6.1
The neighboring moons of Callisto are Ganymede, Europa, and Ia.
Io Europa Ganymede Callisto
Orbiting planet Jupiter
JUPITER
From Brightest to Dimmest: Ganymede Io Europa Callisto Use JPL's HORIZONS web ephemeris to look up apparent magnitudes of jovian satellites.
All matter causes gravity. Every planet will have a gravitational attraction. Certainly Earth, Mars, our Moon, and the Jovian moons Callisto and Ganymede will be walkable.
Io, Europa, Ganymede and Callisto are the four satellites that orbit Jupiter.
Satelites of Jupiter
The four largest moons of Jupiter discovered by Galileo are Io, Europa, Ganymede, and Callisto.