Uranus is the 7th planet from the Sun and has 27 known moons, ranging from large moons like Titania to smaller inner moons. It takes 84 years to orbit the Sun and rotates on its side, with winds blowing at speeds up to 900 km/h. Uranus is composed mainly of ice and rock with an atmosphere of hydrogen and helium and has the coldest temperatures in the solar system, down to -218°C.

2. URANUS
• Uranus is the 7th planet from the Sun, and the
3rd largest planet in the Solar System.
• Uranus is one of the 4 gas giants in the Solar
System, as well as one of the Jovian planets.
• It is the “Twin Planet of Neptune.”

3. Facts about URANUS:
• History of Uranus
• Characteristics of Uranus
• Position and Movement of Uranus
• Uranus’s Moon and Rings
• Exploration on Uranus

4. History of Uranus

5. Who discovered?
• He became famous for
his discovery of the
planet Uranus, along with
two of its major moons
(Titania and Oberon).
• He first recorded the
discovery of a faint object
that might be a nebulous
star or maybe a comet.
Sir William Herschel

6. Uranus

7. How did Uranus get its name?
• It is named
after the
ancient
Greek god
of the sky,
Uranus.

8. How did Uranus get its name?
• Herschel wanted to call it “Georgium Sidus”.
• Some named it George III's Neptune and
Great-Britain's Neptune.
• Some suggested Hypercronius and
Transaturnis.
• The name Minerva was also proposed.
• Finally, the editor of Berliner Astronomical
Laboratory opted for Uranus.

9. Symbol of Uranus
H in symbol taken
from discoverer's last Mars
name, Herschel.
Sun
Matter Soul
Derived from a
combination of the Mars
and Sun symbols
Spirit

10. Facts about URANUS:
• History of Uranus
• Characteristics of Uranus
• Position and Movement of Uranus
• Uranus’s Moon and Rings
• Exploration on Uranus

11. Size of Uranus
• The diameter of
Uranus is 51,118 km
across.
• Its total volume is
6.833×1013 km³.
• The mass of Uranus is
8.68×1025 kg.
• And its surface area is
8.1×109 km².

12. Composition of Uranus
Three Layers : a rocky core at the center, an icy mantle
surrounding that, and an outer gas envelope of
hydrogen and helium.

13. Atmosphere of Uranus
• The atmosphere
of Uranus is
composted mainly
of molecular
hydrogen and
helium.
• The third most
abundant
molecule after
hydrogen and
helium is methane
(CH4).

14. Axis Tilt of Uranus
• The axis of
Uranus is
tilted at an
angle of 98-
degrees.

15. Gravity on Uranus
• The gravity on Uranus Uranus is 0.89 or 89% of
Earth‘s.

16. Temperature of Uranus
• The average
temperature of
the cloud tops on
Uranus is -153ᵒC
up to -218 ᵒC .
• Temperature
inside it may
reach 4,727 ᵒ C.

17. Weather on Uranus
A thick, tempestuous atmosphere with winds
blowing at a clip of 900 km/h.

18. Facts about URANUS:
• History of Uranus
• Characteristics of Uranus
• Position and Movement of Uranus
• Uranus’s Moon and Rings
• Exploration on Uranus

19. Position and Movement of Uranus

20. How Long is day on Uranus?
• A day on
Uranus is 17
hours, 14
minutes and
24 seconds.

21. How Long is a year on Uranus?
• Uranus takes
84.3 years to
complete its
orbit around
the Sun.

22. Distance from Earth
• The closest Uranus can get to Earth is 2.57 billion km.

23. Distance from the Sun
• Uranus’ distance from the Sun is 2.88 billion
km.

24. Orbit of Uranus
• Uranus doesn’t
have a
perfectly
circular orbit.
Instead, it
follows an
elliptical path
around the
Sun.

25. Facts about URANUS:
• History of Uranus
• Characteristics of Uranus
• Position and Movement of Uranus
• Uranus’s Moons and Rings
• Exploration on Uranus

26. Uranus’ Moons & Rings

27. Uranus’ Moons
• Uranus has 27
known moons.
• The moons are
all made of ice
and rock.
• Most of the
moons appear
to be captured
asteroids due
to their size
and orbits.

28. Uranus’ Moons
Orbital
Discovery Distance from Mass
Name Discoverer Period Radius (km)
Date Uranus (103 km) (1020 kg)
(days)
240 x 234.2 x
Miranda (UV) 1948 G. Kuiper 129.39 1.413479 0.66
232.9
581.1 x 577.9
Ariel (UI) 1851 W. Lassel 191.02 2.520379 13.5
x 577.7
Umbriel (UII) 1851 W. Lassel 266.30 4.144177 11.7 584.7
Titania (UIII) 1787 W. Herschel 435.91 8.705872 35.2 788.9
Oberon (UIV) 1787 W. Herschel 583.52 13.463239 30.1 761.4

29. Uranus’ Moons
Distance from
Discovery Orbital Period
Name Discoverer Uranus Mass (1020 kg)
Date (days)
(103 km)
Cordelia (UVI,
1986 Voyager 2 49.77 0.335034 20
S/1986 U7)
Ophelia (UVII,
1986 Voyager 2 53.79 0.376400 21
S/1986 U8)
Bianca (UVIII,
1986 Voyager 2 59.17 0.434579 27
S/1986 U9)
Cressida (UIX,
1986 Voyager 2 61.78 0.463570 40
S/1986 U3)
Desdemona (UX,
1986 Voyager 2 62.68 0.473650 32
S/1986 U6)
Juliet (UXI, S/1986
1986 Voyager 2 64.35 0.493065 47
U2)

30. Uranus’ Moons
Distance from
Discovery Orbital Period
Name Discoverer Uranus Mass (1020 kg)
Date (days)
(103 km)
Portia (UXII, S/1986
1986 Voyager 2 66.09 0.513196 68
U1)
Rosalind (UXIII,
1986 Voyager 2 69.94 0.558460 36
S/1986 U4)
Cupid (S/2003 U2) 2003 74.8 0.618 12
Belinda (UXIV,
1986 Voyager 2 75.26 0.623527 40
S/1986 U5)
Puck (UXV, S/1985
1985 Voyager 2 86.01 0.761833 81
U1)
Mab (S/2003 U1) 2003 97.7 0.923 16

31. Uranus’ Moons
Distance from
Discovery Orbital Period
Name Discoverer Uranus Mass (1020 kg)
Date (days)
(103 km)
Kavelaars,
Caliban (UXVI, S/1997
1997 Gladman, 7230 579.5* 48
U1)
Holman, et. Al
Kavelaars,
Stephano (UXX,
1999 Gladman, 8002 676.5* 10
S/1999 U2)
Holman, et. Al
Kavelaars,
Sycorax (UXVII,
1997 Gladman, 12,179 1283.4* 95
S/1997 U2)
Holman, et. Al
Margaret (UXXIII,
2003 14,345 1694.8 6
S/2003 U3)
Kavelaars,
Prospero (UXVIII,
1999 Gladman, 16,418 1992.8* 15
S/1999 U3)
Holman, et. Al

32. Uranus’ Moons
Distance from
Discovery Orbital Period
Name Discoverer Uranus Mass (1020 kg)
Date (days)
(103 km)
Kavelaars,
Setebos (UXIX,
1999 Gladman, 17,459 2202.3* 15
S/2001)
Holman, et. Al
Trinculo (UXXI,
2001 8571 758.1* 5
S/2001 U1)
S/1986 U10 1986 76.4 0.638 40
S/2001 U2 2001 21,000 2823.4* 6
S/2001 U3 2001 4280 266.6* 6

33. Rings of Uranus
• The rings were
discovered from the
Earth in 1977
• Some data suggested
that Uranus was
surrounded by at
least 5 rings.
• Four more rings were
suggested.
• 2 additional ones
were found by
Voyager 2.

34. Facts about URANUS:
• History of Uranus
• Characteristics of Uranus
• Position and Movement of Uranus
• Uranus’s Moons and Rings
• Exploration on Uranus

35. Exploration to Uranus

36. Voyager 2
• Voyager 2 made
its closest
approach to
Uranus on
January 24,
1986, coming
within 81,500
kilometers
(50,600 mi) of
the planet's
cloud tops.

37. Voyager 2
• The presence of a magnetic field at Uranus was
not known until Voyager's arrival. The intensity
of the field is roughly comparable to that of
Earth's, though it varies much more from point
to point because of its large offset from the
center of Uranus. The peculiar orientation of
the magnetic field suggests that the field is
generated at an intermediate depth in the
interior where the pressure is high enough for
water to become electrically conductive.

38. Voyager 2
• Voyager 2 found that one of the most striking
influences of the sideways position of the
planet is its effect on the tail of the magnetic
field, which is itself tilted 60 degrees from the
planet's axis of rotation. The magnetotail was
shown to be twisted by the planet's rotation
into a long corkscrew shape behind the planet.

39. Voyager 2
• Voyager 2, the only spacecraft to visit Uranus,
imaged a bland-looking sphere in 1986. When
Voyager flew by, the south pole of Uranus
pointed almost directly at the sun because
Uranus was near its southern summer solstice,
with the southern hemisphere bathed in
continuous sunlight and the northern
hemisphere radiating heat into the blackness
of space.

40. References
• http://www.universetoday.com/18855/uranus/
• http://burro.astr.cwru.edu/stu/uranus_moons.html
• http://solarsystem.nasa.gov/planets/profile.cfm?Obj
ect=Uranus&Display=OverviewLong