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Most active spacecraft orbiting another planet

Most active spacecraft orbiting another planet
Who
ExoMars Trace Gas Orbiter, Mangalyaan, MAVEN, Mars Reconnaissance Orbiter, Mars Express, Mars Odyssey , Tianwen-1, Hope
Where
Not Applicable
When
10 February 2021

There are a total of eight operational spacecraft orbiting Mars as of 25 Jan 2022. The most recent arrivals in Mars orbit are the UAE's Hope and China's Tianwen-1, which reached the red planet on 9 and 10 Feb 2021 respectively.

The full list of active spacecraft is as follows:

Mars Odyssey (NASA), in orbit since 24 October 2001.

Mars Express (ESA), in orbit since 25 December 2003.

Mars Reconnaissance Orbiter (NASA), in orbit since 10 March 2006.

MAVEN (NASA), in orbit since 22 September 2014.

Mangalyaan (ISRO [India]), in orbit since 24 September 2014.

ExoMars Trace Gas Orbiter (ESA), in orbit since 19 October 2016.

Hope (UAE), in orbit since 9 February 2021.

Tianwen-1 (China), in orbit since 10 February 2021.