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1. science.nasa.gov › mars › moonsDeimos - NASA Science

   science.nasa.gov › mars › moons

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   Deimos . Deimos is the smaller of Mars' two moons. It's 9 by 7 by 6.8 miles in size (15 by 12 by 11 kilometers). Deimos orbits Mars every 30 hours.

   • CRISM Views Phobos and Deimos

     Phobos and Deimos are about 21 and 12 kilometers (13.0 and...

2. en.wikipedia.org › wiki › Moons_of_MarsMoons of Mars - Wikipedia

   en.wikipedia.org › wiki › Moons_of_Mars

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   Phobos orbits closer to Mars, with a semi-major axis of 9,377 km (5,827 mi) and an orbital period of 7.66 hours; while Deimos orbits farther with a semi-major axis of 23,460 km (14,580 mi) and an orbital period of 30.35 hours.

3. science.nasa.gov › mars › moonsMars Moons: Facts - NASA Science

   science.nasa.gov › mars › moons

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   It whips around Mars three times a day, while the more distant Deimos takes 30 hours for each orbit. Phobos is gradually spiraling inward, drawing about six feet (1.8 meters) closer to the planet each century.

4. astronomynow.com › 2018/07/30 › find-martian-moons-phobos-and-deimos-at-the-redFind Martian moons Phobos and Deimos at the Red Planet’s closest...

   astronomynow.com › 2018/07/30 › find-martian-moons-phobos-and-deimos-at-the-red

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   30 lip 2018 · Finding Phobos and Deimos. Given their diminutive size, the Martian moons are only accessible to large backyard telescopes when the Red Planet is particularly close. Around the end of July and early August 2018, Phobos glimmers at magnitude +11, while Deimos is a magnitude fainter at +12.

5. www.theplanetstoday.com › mars_and_its_moonsA Live view of Mars and its moons - theplanetstoday.com

   www.theplanetstoday.com › mars_and_its_moons

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   Phobos. Phobos is a small, irregularly shaped object with a mean radius of 11 km, and is seven times more massive than Deimos. Phobos orbits 6,000 km (3,700 mi) from the Martian surface, which is closer than any other known planetary moon.

6. science.nasa.gov › resource › crism-views-phobos-and-deimosCRISM Views Phobos and Deimos - NASA Science

   science.nasa.gov › resource › crism-views-phobos-and-deimos

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   27 lis 2007 · Phobos and Deimos are about 21 and 12 kilometers (13.0 and 7.5 miles) in diameter and orbit Mars with periods of 7 hours, 39.2 minutes and 1 day, 6 hours, 17.9 minutes respectively.

7. appel.nasa.gov › 2024/03/28 › mission-focuses-on-intriguing-moons-of-marsMission Focuses on Intriguing Moons of Mars - NASA

   appel.nasa.gov › 2024/03/28 › mission-focuses-on-intriguing-moons-of-mars

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   28 mar 2024 · Phobos is on a 50-million-year collision course with Mars, drawing about 6 ft closer to the planet’s surface every 100 years. Deimos is about 1/7th the size of Phobos. It orbits much further out—14,291 miles from the surface—circling the planet in approximately 30 hours.