Kingdom
Plantae
Division
Magnoliophyta (the
Angiosperms)
Class
Liliopsida (the
Monocotyledons)
Subclass
Alismatidae
Order
Najadales
Water plants of the family Najadaceae (AKA the water nymph or Waternymph family). They are annual aquatic herbs, living in fresh or brackish water, and having thin stems and leaves. They go from stringy (Southern Naiad), to feathery (Slender Naiad).
Southern Naiad (Najas guadalupensis)
Slender Naiad, Common Naiad (Najas flexilis)
Bushy Pondweed (Najas gracillima)
Spiny-leaf Naiad (Najas minor)
???????? (Najas major)
Holly-leaf Naiad (Najas Marina)
The irregularly shaped first moon of Neptune, discovered by Voyager 2 in 1989.
Equatorial radius .............. 29 km
Diameter ....................... 54 km
Mean distance from Neptune ..... 48,000 km
Orbital period ................. 0.294396 days
Mean orbital velocity .......... 11.86 km/sec
Orbital inclination ............ 4.74 degrees
Orbital eccentricity ........... 0.0003
Visual geometric albedo ........ 0.06
Visual magnitude from earth .... 24.7
Mass, mean density, and rotational period are unknown.
The moons of Neptune: Naiad, Thalassa, Despina, Galatea, Larissa, Proteus, Triton, and Nereid.