At 276 meters long and with a beam of 142 meters the Naegling is slightly larger than a Klingon Battlecruiser. She is armed with pulse cannons, laser turrets and nuclear warhead missiles.
The basic idea for the ship comes from an old and largely forgotten Starfleet vessel. No more clues on that one.
The Jupiter texture is by Master-Bit over at deviantart and the planet is from a tutorial by Arghanion’s Puzzlebox.