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Planet Information Table
DISTANCE
FROM SUN
(millions of mi/km)
NAME
MERCURY
36 / 58
VENUS
67 / 108
EARTH
93 / 150
MARS
142 / 228
CERES*
260 / 420
JUPITER
484 / 778
SATURN
884 / 1423
URANUS
1783 / 2869
NEPTUNE
2792 / 4492
PLUTO*
4650 / 7500
ERIS*
9114 / 14,700
*Dwarf planet
**Known as of July 2006
Annual Meteor Showers
Shower
Quadrantids
Lyrids
Eta Aquarids
Delta Aquarids
Perseids
Orionids
Taurids
Leonids
Geminids
Ursids
Dates can vary slightly. "Hourly" is the number of meteors you might see under a dark sky.
Expect to see perhaps 50% more if the shower is strong.
Source: Skywatching by David H. Levy (Time-Life Books, 1994-98).
14
ORBITAL
PERIOD
(in Earth years)
0.2
0.6
1.0
1.9
4.6
11.9
29.5
84
164.8
248
557
Date
January 3
Apri 22
May 5
July 28
August 12
October 22
November 3
November 17
December 14
December 23
ROTATION
SIZE
RELATIVE
PERIOD
(hours in day)
TO EARTH
1416
0.39 X
5833
0.95 X
24
1 X
25
0.53 X
9
0.08 X
10
11.2 X
10
9.4 X
17
4.0 X
16
3.8 X
153
0.2 X
7
0.2 X
Hourly
Parent comet
40
Asteroid 2003 EH1
15
Comet Thatcher
20
Comet Halley
20
50
Comet Swift-Tuttle
25
Comet Halley
15
Comet Encke
15
Comet Temple-Tuttle
50
Asteroid 3200 Phaethon
20
Comet Tuttle
MASS
RELATIVE
TO EARTH
MOONS** RINGS
0.06 X
0
0.8 X
0
1 X
1
0.1 X
2
0.0002 X
0
318 X
63
95 X
56
15 X
27
17 X
13
0.002 X
3
0.003 X
1
(Unknown)
No
No
No
No
No
Yes
Yes
Yes
Yes
No
No
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