# Perseverance rover on Mars (was: Mars lander set for Feb 18th landing)

**URL:** <https://boards.straightdope.com/t/perseverance-rover-on-mars-was-mars-lander-set-for-feb-18th-landing/932068>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [February 2, 2021, 5:56pm UTC](https://boards.straightdope.com/t/perseverance-rover-on-mars-was-mars-lander-set-for-feb-18th-landing/932068 "2021-02-02T17:56:42Z")\
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**Author:** ![wolfpup](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/wolfpup/32/10618_2.png) [@wolfpup](https://boards.straightdope.com/u/wolfpup)\
**Post date:** [April 20, 2022, 8:50pm UTC](https://boards.straightdope.com/t/perseverance-rover-on-mars-was-mars-lander-set-for-feb-18th-landing/932068/253 "2022-04-20T20:50:31Z")

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What a great little video clip! Phobos is very close to Mars and orbits very fast, rising and setting twice each Martian day. I believe the video is meant to be in real time. It takes around 23 seconds to cross something less than the apparent diameter of the sun, which on Mars has an angular diameter of 0.35 degrees, so that’s about in the right ballpark.

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