ESA spacecraft

ExoMars Trace Gas Orbiter

Operating; spacecraft health nominal (ESA, EPSC 2026 abstract, September 2026).

At Mars.

Measured

Agency
ESA
Arrived
2016-10-19
From the Earth today
1.31 AU (196 million km)
From Mars's centre
3,799 km

How far, from the Earth

1.31 AU. To cross it:

  • Light11 minutes
  • Voyager 1's speed4.41 months
  • Driving at 100 km/h223 years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

  • JPL Horizons trajectory round Mars: worst miss 27 km on the dates it was checked against (median 12 km); between those dates as much as about 82 km. Dates after the data was fetched are Horizons' predictions, which it revises as a mission flies.

Where this comes from

  • ESA
  • Spacecraft trajectories: JPL Horizons, NASA/JPL-Caltech; each mission's agency credited on its card.

Every catalogue Ouranos draws is credited on the credits page.