Naiad (moon)
Videos
Naiad, named after the naiads of Greek legend, is the innermost satellite of Neptune and the nearest to the center of any gas giant with moons with a distance of 48,224 km from the planet's center. It
Simulated view of Naiad
Depiction of Naiad's orbital motion (red) in a view that co-rotates with Thalassa (central yellow dot)
Jupiter family
243 ida crop
Ephemeris
Videos
In astronomy and celestial navigation, an ephemeris is a book with tables that gives the trajectory of naturally occurring astronomical objects and artificial satellites in the sky, i.e., the position
Naiad (moon)
…that Naiad had been located in archived Hubble imagery from 2004. The suspicion that the loss of positioning was due to considerable errors in Naiad's ephemeris proved correct as Naiad was ultimately located 80 degrees from its expected position. Naiad Profile by NASA's Solar System Exploration…
Alfonsine tables
Page from Almanach Perpetuum