Nozomi

Launch date: 4 July 1998
Nation: Japan
Outcome: failure

Wikipedia - "Nozomi (のぞみ) (Japanese for "Wish" or "Hope," and known before launch as Planet-B) was planned as a Mars-orbiting aeronomy probe, but was unable to achieve Mars orbit due to electrical failures. Operation was terminated on December 31, 2003.
It was constructed by the Institute of Space and Astronautical Science, University of Tokyo and launched on July 4, 1998 at 03:12 JST (18:12 UTC) with an on-orbit dry mass of 258 kg and 282 kg of propellant."