# Is there a “dusk-dawn” sun-synchronous lunar orbit? [duplicate]

Is it possible to have a Lunar "dusk-dawn" Sun-synchronous orbit, where a spacecraft can always be exposed to sunlight 24x7 over the terminator line?

## marked as duplicate by PearsonArtPhoto♦Jan 28 '18 at 13:29

• As already noted, the Moon's $J_2$ is too small to support sun synchronous orbits. However, one of the advantages of the Near Rectilinear Halo Orbit (see this question) is that the Sun is hardly ever eclipsed by either the Moon or the Earth. – David Hammen Jan 28 '18 at 14:11