Both of these are moons of Jupiter. Because they orbit Jupiter both have the same distance from the Sun more or less.
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
From Brightest to Dimmest: Ganymede Io Europa Callisto Use JPL's HORIZONS web ephemeris to look up apparent magnitudes of jovian satellites.
Orbiting planet Jupiter
JUPITER
Ganymede would appear the brightest from the surface of Jupiter due to its larger size and higher reflectivity compared to Europa, Callisto, and Io. Ganymede is the largest moon in the solar system and has a highly reflective icy surface, making it more luminous when viewed from Jupiter.
Io, Europa, Ganymede and Callisto are the four satellites that orbit Jupiter.
Same as Jupiter, since Callisto is a moon of Jupiter.
The order of brightness of Jupiter's major moons from brightest to faintest is Io, Europa, Ganymede, and Callisto. Io is the closest to Jupiter and receives more sunlight, while Callisto is the farthest and receives the least amount of sunlight, making it the dimmest of the four.