NASA said it expects most of the spacecraft to burn up as it travels through the atmosphere.
The object would join the five other known dwarf planets: Pluto, Ceres, Eris, Haumea and Makemake.
The study challenges a century-old theory that the celestial bodies delivered the molecular “building blocks” for life on the planet.
Himawari-9 is a geostationary weather satellite operated by the Japan Meteorological Agency.
Curiosity has been exploring the Red Planet since touching down in Gale Crater in August 2012.
"I just stopped, dropped everything, and started looking into what that spot was."
A study published in the journal Geophysical Research Letters suggests that Mercury may have contracted more than previously believed.
Scientists say Mercury formed through a flurry of violent collisions between rocks and asteroids orbiting the Sun around 4.5 billion years ago.
The discovery add to the continuing mystery of atmospheric phenomena on the gas giants of our solar system.
