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Note: As this book goes to press, nearly two hundred moons are now known in the solar system and more are being discovered on a regular basis. Of the major planets, only Mercury and Venus do not have moons. In addition to moons of the planets, there are many moons of asteroids. In this appendix, we list only the largest and most interesting objects that orbit each planet (including dwarf planets). The number given for each planet is discoveries through 2015. For further information see https://solarsystem.nasa.gov/planets/solarsystem/moons and https://en.wikipedia.org/wiki/List_of_natural_satellites.

Selected Moons of the Planets
Planet (moons) Satellite Name Discovery Semimajor Axis (km × 1000) Period (d) Diameter (km) Mass (10 20 kg) Density (g/cm 3 )
Earth (1) Moon 384 27.32 3476 735 3.3
Mars (2) Phobos Hall (1877) 9.4 0.32 23 1 × 10 −4 2.0
Deimos Hall (1877) 23.5 1.26 13 2 × 10 −5 1.7
Jupiter (67) Amalthea Barnard (1892) 181 0.50 200
Thebe Voyager (1979) 222 0.67 90
Io Galileo (1610) 422 1.77 3630 894 3.6
Europa Galileo (1610) 671 3.55 3138 480 3.0
Ganymede Galileo (1610) 1070 7.16 5262 1482 1.9
Callisto Galileo (1610) 1883 16.69 4800 1077 1.9
Himalia Perrine (1904) 11,460 251 170
Saturn (62) Pan Voyager (1985) 133.6 0.58 20 3 × 10 −5
Atlas Voyager (1980) 137.7 0.60 40
Prometheus Voyager (1980) 139.4 0.61 80
Pandora Voyager (1980) 141.7 0.63 100
Janus Dollfus (1966) 151.4 0.69 190
Epimetheus Fountain, Larson (1980) 151.4 0.69 120
Mimas Herschel (1789) 186 0.94 394 0.4 1.2
Enceladus Herschel (1789) 238 1.37 502 0.8 1.2
Tethys Cassini (1684) 295 1.89 1048 7.5 1.3
Dione Cassini (1684) 377 2.74 1120 11 1.3
Rhea Cassini (1672) 527 4.52 1530 25 1.3
Titan Huygens (1655) 1222 15.95 5150 1346 1.9
Hyperion Bond, Lassell (1848) 1481 21.3 270
Iapetus Cassini (1671) 3561 79.3 1435 19 1.2
Phoebe Pickering (1898) 12,950 550 (R) R stands for retrograde rotation (backward from the direction that most objects in the solar system revolve and rotate). 220
Uranus (27) Puck Voyager (1985) 86.0 0.76 170
Miranda Kuiper (1948) 130 1.41 485 0.8 1.3
Ariel Lassell (1851) 191 2.52 1160 13 1.6
Umbriel Lassell (1851) 266 4.14 1190 13 1.4
Titania Herschel (1787) 436 8.71 1610 35 1.6
Oberon Herschel (1787) 583 13.5 1550 29 1.5
Neptune (14) Despina Voyager (1989) 53 0.33 150
Galatea Voyager (1989) 62 0.40 150
Larissa Voyager (1989) 118 1.12 400
Triton Lassell (1846) 355 5.88 (R) R stands for retrograde rotation (backward from the direction that most objects in the solar system revolve and rotate). 2720 220 2.1
Nereid Kuiper (1949) 5511 360 340
Pluto (5) Charon Christy (1978) 19.7 6.39 1200 1.7
Styx Showalter et al (2012) 42 20 20
Nix Weaver et al (2005) 48 24 46 2.1
Kerberos Showalter et al (2011) 58 24 28 1.4
Hydra Weaver et al (2005) 65 38 61 0.8
Eris (1) Dysnomea Brown et al (2005) 38 16 684
Makemake (1) (MK2) Parker et al (2016) 160
Haumea (2) Hi’iaka Brown et al (2005) 50 49 400
Namaka Brown et al (2005) 39 35 200

Questions & Answers

Discuss the differences between taste and flavor, including how other sensory inputs contribute to our  perception of flavor.
John Reply
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Ummi Reply
omeprazole
Kamara
what
Renee
what is this
Renee
is a drug
Kamara
of anti-ulcer
Kamara
Omeprazole Cimetidine / Tagament For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
Nency Reply
Not really sure
Eli
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include: 1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
what is anatomy
Oyindarmola Reply
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Oyerinde Reply
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Mohammed Reply
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
Wulku Reply
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
Ali Reply
function of digestive
Ali
the diagram of the lungs
Adaeze Reply
what is the normal body temperature
Diya Reply
37 degrees selcius
Xolo
37°c
Stephanie
please why 37 degree selcius normal temperature
Mark
36.5
Simon
37°c
Iyogho
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
37A c
Wulku
what is anaemia
Diya Reply
anaemia is the decrease in RBC count hemoglobin count and PVC count
Eniola
what is the pH of the vagina
Diya Reply
how does Lysin attack pathogens
Diya
acid
Mary
I information on anatomy position and digestive system and there enzyme
Elisha Reply
anatomy of the female external genitalia
Muhammad Reply
Organ Systems Of The Human Body (Continued) Organ Systems Of The Human Body (Continued)
Theophilus Reply
what's lochia albra
Kizito
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Source:  OpenStax, Astronomy. OpenStax CNX. Apr 12, 2017 Download for free at http://cnx.org/content/col11992/1.13
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