Memphis Facula

Degraded crater on Ganymede

Memphis Facula

A Voyager 2 image of Memphis Facula on Ganymede (white patch on lower right). The smaller, darker, more rugged Nidaba, to its upper right, is considered a crater.[1]

Feature type| Facula
Coordinates| 14°06′N 131°54′W﻿ / ﻿14.1°N 131.9°W﻿ / 14.1; -131.9[2]
Diameter| 360 km (220 mi)
Eponym| Memphis, Egypt

Memphis Facula /ˈmɛmfɪs ˈfækjʊlə/ is a palimpsest, or "ghost crater", on Ganymede, the largest of the Jovian satellites.

About 360 km across,[2] it is situated in the southwestern part of Galileo Regio, a huge almost circular dark region in Ganymede's northern hemisphere. Although almost level today, it is a relic of a massive impact and once was a deep impact crater whose walls have slumped and its floor has risen isostatically, smoothing out the remaining topography with slush.

The morphology of the larger palimpsests like Memphis Facula suggests that Ganymede's icy crust at the time of impact was about 10 km thick and was penetrated by the impact, allowing the slush and fluid beneath to fill and level out the crater.[3]

## See also

[edit]

* Ganymede City

## References

[edit]

1. ^ "Ganymede: Nidaba". Gazetteer of Planetary Nomenclature. USGS Astrogeology. Retrieved 2014-06-21.
2. ^ a b "Ganymede: Memphis Facula". Gazetteer of Planetary Nomenclature. USGS Astrogeology. Retrieved 2012-03-12.
3. ^ Harland, D. M. (1 October 2000). Jupiter Odyssey: The Story of NASA's Galileo Mission. Springer. p. 136\. ISBN 978-1-85233-301-0. OCLC 44461919.

This article about an extraterrestrial geological feature is a stub. You can help Wikipedia by expanding it.

|

* v
* t
* e

* v
* t
* e

Ganymede

Geology|

| Lists|

* List of geological features on Ganymede
* List of quadrangles on Ganymede
* List of craters on Ganymede

|

Impact craters|

* Achelous
* El
* Epigeus
* Gula
* Khensu
* Kittu
* Neith
* Nergal

Regions|

* Galileo Regio

Sulci|

* Uruk Sulcus

Faculae|

* Memphis Facula

Catenae|

* Enki Catena

Exploration|

| Past|

* Pioneer 10
* Pioneer 11
* Voyager 1
* Voyager 2
* Galileo
* Cassini–Huygens
* New Horizons
* Juno

|

Planned|

* Jupiter Icy Moons Explorer (2023)
* Europa Clipper (2024)

Cancelled|

* Jupiter Ganymede Orbiter
* Jupiter Icy Moons Orbiter
* Laplace-P

Other|

* Ganymede in fiction
* Life

* v
* t
* e

Solar System

* Sun
* Mercury
* Venus
* Earth
* Mars
* Ceres
* Jupiter
* Saturn
* Uranus
* Neptune
* Orcus
* Pluto
* Haumea
* Quaoar
* Makemake
* Gonggong
* Eris
* Sedna

| Planets,
dwarfs|

* Terrestrials
* Mercury
* Venus
* Earth
* Mars
* Giants
* Gas
* Jupiter
* Saturn
* Ice
* Uranus
* Neptune
* Dwarfs
* Ceres
* Orcus
* Pluto
* Haumea
* Quaoar
* Makemake
* Gonggong
* Eris
* Sedna

|

Moons|

* Earth
* Moon
* other near-Earth objects
* Mars
* Phobos
* Deimos
* Jupiter
* Ganymede
* Callisto
* Io
* Europa
* all 95
* Saturn
* Titan
* Rhea
* Iapetus
* Dione
* Tethys
* Enceladus
* Mimas
* Hyperion
* Phoebe
* all 146
* Uranus
* Titania
* Oberon
* Umbriel
* Ariel
* Miranda
* all 28
* Neptune
* Triton
* Proteus
* Nereid
* all 16
* Orcus
* Vanth
* Pluto
* Charon
* Nix
* Hydra
* Kerberos
* Styx
* Haumea
* Hiʻiaka
* Namaka
* Quaoar
* Weywot
* Makemake
* S/2015 (136472) 1
* Gonggong
* Xiangliu
* Eris
* Dysnomia

Rings|

* Earth?
* Jovian
* Saturnian (Rhean?)
* Charikloan
* Chironean
* Uranian
* Neptunian
* Haumean
* Quaoarian

Small
Solar
System
bodies|

* Comets
* Damocloids
* Meteoroids
* Minor planets
* names and meanings
* moons
* Planetesimal
* Planetary orbit-crossing minor planets
* Mercury
* Venus
* Earth
* Mars
* Jupiter
* Saturn
* Uranus
* Neptune
* Trojans
* Venus
* Earth
* Mars
* Jupiter
* Trojan camp
* Greek camp
* Saturn Moons
* Uranus
* Neptune
* Near-Earth objects
* Asteroid belt
* Asteroids
* Ceres
* Vesta
* Pallas
* Hygiea
* active
* first 1000
* families
* PHA
* exceptional
* Kirkwood gap
* Centaurs
* Neptune trojans
* Trans-Neptunian objects
* Kuiper belt
* Cubewanos
* Plutinos
* Detached objects
* Sednoids
* Scattered disc
* Oort cloud
* Hills cloud

| Hypothetical
objects|

* Fifth giant
* Nemesis
* Phaeton
* Planet Nine
* Planet V
* Planet X
* Subsatellites
* Theia
* Tyche
* Vulcan
* Vulcanoids

|

Exploration
(outline)|

* Colonization
* Discovery
* astronomy
* historical models
* timeline
* Space probes
* timeline
* list
* Human spaceflight
* space stations
* list
* programs
* Mercury
* Venus
* Moon
* mining
* Mars
* Ceres
* Asteroids
* mining
* Comets
* Jupiter
* Saturn
* Uranus
* Neptune
* Pluto
* Deep space

Formation,
evolution|

* Star formation
* Accretion
* Accretion disk
* Excretion disk
* Circumplanetary disk
* Circumstellar disc
* Circumstellar envelope
* Coatlicue
* Cosmic dust
* Debris disk
* Detached object
* EXCEDE
* Exozodiacal dust
* Extraterrestrial materials
* Sample curation
* Sample-return mission
* Frost/Ice/Snow line
* Giant-impact hypothesis
* Gravitational collapse
* Hills cloud
* Hill sphere
* Interplanetary dust cloud
* Interplanetary medium/space
* Interstellar cloud
* Interstellar medium
* Interstellar space
* Kuiper belt
* Kuiper cliff
* Molecular cloud
* Nebular hypothesis
* Oort cloud
* Outer space
* Planet
* Disrupted
* Migration
* System
* Planetesimal
* Formation
* Merging stars
* Protoplanetary disk
* Ring system
* Roche limit
* vs. Hill sphere
* Rubble pile
* Scattered disc

Lists|

* Comets
* Possible dwarf planets
* Gravitationally rounded objects
* Minor planets
* Natural satellites
* Solar System models
* Solar System objects
* by size
* by discovery date
* Interstellar and circumstellar molecules

Related|

* Double planet
* Lagrange point
* Moonlet
* Syzygy
* Tidal locking

* Outline of the Solar System
* Solar System portal
* Astronomy portal
* Earth sciences portal

Solar System → Local Interstellar Cloud → Local Bubble → Gould Belt → Orion Arm → Milky Way → Milky Way subgroup → Local Group → Local Sheet → Virgo Supercluster → Laniakea Supercluster → Local Hole → Observable universe → Universe
Each arrow (→) may be read as "within" or "part of".
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template