Milky Way Galaxy Star and Planet Atlas
4,197 Planets Discovered and counting....
Terran Sized Planets:
16
Terran Sized Planets in Hab Zone: 6
Earthlike Planets Candidates: 5
Truly Earthlike Planets: 1
Home > Galaxy Star and Planet Legend
Hyper Giant
Class
Class
? K to 53,000 K
? F to 94,940 F
? F to 94,940 F
?
75 to 315
501 to 2,100
Older O,B,A,F,G,K,M Stars
Super Giant
Class
Class
4,000 K to 40,000 K
6,740 F to 71,540 F
6,740 F to 71,540 F
?
10 to 70
30 to 500
Older O,B,A,F,G,K,M Stars
Giant
Class
Class
3,000 K to 10,000 K
4,940 F to 17,540 F
4,940 F to 17,540 F
?
1 to 5
10 to 50
Older G,K,M Stars
Wolf Rayet
Class
Class
53,000 K to 200,000 K
94,940 F to 359,540 F
94,940 F to 359,540 F
?
20 to 74
2 to 25
O
Class
Class
30,000 K to 52,000 K
53,540 F to 93,140 F
53,540 F to 93,140 F
?
16 to 25
6.6 to 10
B
Class
Class
10,000 K to 29,999 K
17,540 F to 53,538 F
17,540 F to 53,538 F
?
2.1 to 15
1.8 to 6.5
A
Class
Class
7,500 K to 9,999 K
13,040 F to 17,538 F
13,040 F to 17,538 F
?
1.4 to 2.1
1.4 to 1.7
F
Class
Class
6,000 K to 7,499 K
10,340 F to 13,038 F
10,340 F to 13,038 F
?
1.04 to 1.3
1.15 to 1.3
G
Class
(Our Sun)
Class
(Our Sun)
5,200 K to 5,999 K
8,900 F to 10,338 F
8,900 F to 10,338 F
10 Million K to 15 Million K
18 Million F to 27 Million F
18 Million F to 27 Million F
0.80 to 1.03
0.96 to 1.14
K
Class
Class
3,700 K to 5,199 K
6,200 F to 8,898 F
6,200 F to 8,898 F
?
0.45 to 0.70
0.70 to 0.95
M
Class
Class
2,400 K to 3,699 K
3,860 F to 6,198 F
3,860 F to 6,198 F
?
0.08 to 0.44
0.69 or Less
L
Class
Class
1,300 K to 2,000 K
1,880 F to 3,140 F
1,880 F to 3,140 F
?
51 to 80 Jupiter Masses
Similar to Jupiter
T
Class
Class
700 K to 1299 K
800 F to 1,878 F
800 F to 1,878 F
?
26 to 50 Jupiter Masses
Similar to Jupiter
Y
Class
Class
440 K to 699 K
332 F to 798 F
332 F to 798 F
?
14 to 25 Jupiter Masses
Similar to Jupiter
Sub-BD
Class
Class
225 K to 439 K
-54 F to 330 F
-54 F to 330 F
?
3 to 13 Jupiter Masses
Similar to Jupiter
D
Class
(White Dwarf)
Class
(White Dwarf)
4,000 K to 150,000 K
6,740 F to 269,540 F
6,740 F to 269,540 F
2.5 Million K to 1 Billion K
4.5 Million F to 1.8 Billion F
4.5 Million F to 1.8 Billion F
0.17 to 1.33
8,700 Miles
Neutron Star
600,000 K to 1,000,000 K
1,079,540 F to 1,799,540 F
1,079,540 F to 1,799,540 F
1 Trillion K
1.8 Trillion F
1.8 Trillion F
1.1 to 3.3
12.4 Miles
Black Hole
0 K to 2.7 K
-459 F to -454 F
-459 F to -454 F
Unknown
or not possible
or not possible
3.8 to 40 Billion
15 to 146.6 Billion Miles
Super Jovian
318 Earth Masses
(1.0 Jupiter Mass)
to
4,135 Earth Masses
(13 Jupiter Mass)
(1.0 Jupiter Mass)
to
4,135 Earth Masses
(13 Jupiter Mass)
10 to 15
Ultra Thick Atmosphere
No Surface
Not Habitable
No Surface
Not Habitable
Jupiter
Jovian
51 Earth Masses
(0.16 Jupiter Mass)
to
317 Earth Masses
(0.99 Jupiter Mass)
(0.16 Jupiter Mass)
to
317 Earth Masses
(0.99 Jupiter Mass)
4.01 to 9.99
Ultra Thick Atmosphere
No Surface
Not Habitable
No Surface
Not Habitable
Saturn
Neptunian
10 to 50
Earth Masses
Earth Masses
3.00 to 4.00
Very Thick Atmosphere
No Surface
Not Habitable
No Surface
Not Habitable
Uranus, Neptune, Planet 9
Sub-Neptunian
2.1 to 9.99
Earth Masses
Earth Masses
1.26 to 2.99
Thick Atmosphere
No Surface
Not Habitable
No Surface
Not Habitable
Gliese 3634 b
Super Terran
1.26 to 2.00
Earth Masses
Earth Masses
1.03 to 1.25
Significant Atmosphere
Rocky Surface
Could be Habitable
Rocky Surface
Could be Habitable
Unknown
Terran
0.51 to 1.25
Earth Masses
Earth Masses
0.80 to 1.02
Significant Atmosphere
Rocky Surface
Could be Habitable
Rocky Surface
Could be Habitable
Venus, Earth
Sub-Terran
0.11 to 0.50
Earth Masses
Earth Masses
0.50 to 0.79
Thin Atmosphere
Rocky Surface
Could be Habitable
Rocky Surface
Could be Habitable
Mars
Mercurian
0.006 to 0.10
Earth Masses
Earth Masses
0.21 to 0.49
Very Thin or No Atmosphere
Rocky Surface
Not Habitable
Rocky Surface
Not Habitable
Mercury
Plutonian
0.00016 to 0.005
0.081 to 0.20
Very Thin or No Atmosphere
Rocky Surface
Not Habitable
Rocky Surface
Not Habitable
Pluto
Asteroidan
0.00015 or Less
Earth Masses
Earth Masses
0.080 or Less
No Atmosphere
Rocky Surface
Not Habitable
Rocky Surface
Not Habitable
Ceres
Breathable
Nitrogen and Oxygen
Earth
Hazardous
Unknown
Unknown
Poisonous
Unknown
Unknown
Toxic
Carbon Dioxide
Venus, Mars
Inferno
1,201 °
Fahrenheit or higher
Fahrenheit or higher
Planet Saffar
43.900
Light Years Distant
43.900
Light Years Distant
Extremely Hot
801 ° Fahrenheit
to
1,200 ° Fahrenheit
to
1,200 ° Fahrenheit
Planet Venus
Very Hot
401 ° Fahrenheit
to
800 ° Fahrenheit
to
800 ° Fahrenheit
Planet Ross 780 b
15.3420
Light Years Distant
15.3420
Light Years Distant
Hot
96 ° Fahrenheit
to
400 ° Fahrenheit
to
400 ° Fahrenheit
Planet Tau Ceti d
11.8870
Light Years Distant
11.8870
Light Years Distant
Warm
45 ° Fahrenheit
to
95 ° Fahrenheit
to
95 ° Fahrenheit
Planet Earth
Cold
44 ° Fahrenheit
to
-200 ° Fahrenheit
to
-200 ° Fahrenheit
Planet Mars
Freezing
-201 ° Fahrenheit
or below
or below
Planet Jupiter
Rocky
Solid Rock Surface
Earth
Gaseous
No Solid Rock Surface
Jupiter
Varied
Grasslands, Foerst, Jungle, Mountains, Volcanic, Plains, Tundra, Ice
Earth
Cratered
Surface is dominated by Craters
Mercury
Volcanic
Surface dominated by Volanic Activity
Venus
Frozen
Surface is dominated by Ice
Europa
Unknown
Iron Core
Silicon Crust
Earth
Unknown
Water Ice Core
Unknown
Unknown
Unknown
Diamond Core
Carbon Crust
Unknown
Weak
0.01 to 0.34
Unknown
Low
0.35 to 0.64
Mercury, Mars
Lower
0.65 to 0.89
Unknown
Moderate
0.90 to 1.10
Earth, Venus
Elevated
1.11 to 1.35
Neptune
High
1.36 to 1.59
Unknown
Extreme
1.60 +
Jupiter
Water
Swamp, Rivers, Lakes, Seas, Oceans
Earth
Methane
Rivers, Lakes, Oceans
Titan
Desert
No Liquid
Mars
Plants
Planet has just Plants, no Anmials or Intelligent Beings
Unknown
Animals
Planet has Plants and Animals, but no Intelligent Life
Unknown
Intelligent Beings
Planet has Plants, Animals, and Intelligent beings
Earth
Habitable Zone
(Distance from star where
water is possible with a
sufficient atmosphere)
(Distance from star where
water is possible with a
sufficient atmosphere)
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Tidally Locked
(Same side of the planet
always faces its star)
(Same side of the planet
always faces its star)
Yes
No
No
No
No
No
No
No
No
No
Yes
Axial Tilt
(The Earth's tilt causes seasons)
(The Earth's tilt causes seasons)
18.9 °
or Less
or Less
19.0 °
to
19.9 °
to
19.9 °
20.0 °
to
20.9 °
to
20.9 °
21.0 °
to
21.9 °
to
21.9 °
22.0 °
to
22.9 °
to
22.9 °
23.0 °
to
24.0 °
to
24.0 °
24.1 °
to
25.0 °
to
25.0 °
25.1 °
to
25.9 °
to
25.9 °
26.0 °
to
26.9 °
to
26.9 °
27.0 °
to
27.9 °
to
27.9 °
28.0 °
or More
or More
Orbit Eccentricity
(How closely an orbit
is to a perfect circle)
Perfect Circle = 0
(How closely an orbit
is to a perfect circle)
Perfect Circle = 0
0.0119
or Less
or Less
0.0120
to
0.0129
to
0.0129
0.0130
to
0.0139
to
0.0139
0.0140
to
0.0149
to
0.0149
0.0150
to
0.0159
to
0.0159
0.0160
to
0.0170
to
0.0170
0.0171
to
0.0180
to
0.0180
0.0181
to
0.0190
to
0.0190
0.0191
to
0.0200
to
0.0200
0.0201
to
0.0210
to
0.0210
0.0211
or More
or More
Size
Other Sizes
Terran
Terran
Terran
Terran
Terran
Terran
Terran
Terran
Terran
Other Sizes
Earth Mass
0.74
or Less
or Less
0.75
to
0.82
to
0.82
0.83
to
0.87
to
0.87
0.88
to
0.92
to
0.92
0.93
to
0.97
to
0.97
0.98
to
1.02
to
1.02
1.03
to
1.07
to
1.07
1.08
to
1.12
to
1.12
1.13
to
1.17
to
1.17
1.18
to
1.25
to
1.25
1.26
or More
or More
Diameter
6,333 Miles
or Less
or Less
6,334 Miles
to
7,125 Miles
to
7,125 Miles
7,126 Miles
to
7,521 Miles
to
7,521 Miles
7,522 Miles
to
7,679 Miles
to
7,679 Miles
7,680 Miles
to
7,838 Miles
to
7,838 Miles
7,839 Miles
to
8,075 Miles
to
8,075 Miles
8,076 Miles
to
8,234 Miles
to
8,234 Miles
8,235 Miles
to
8,392 Miles
to
8,392 Miles
8,393 Miles
to
8,788 Miles
to
8,788 Miles
8,789 Miles
to
9,502 Miles
to
9,502 Miles
9,503 Miles
or More
or More
Density
4.99
or Less
or Less
5.00
to
5.14
to
5.14
5.15
to
5.24
to
5.24
5.25
to
5.34
to
5.34
5.35
to
5.44
to
5.44
5.45
to
5.55
to
5.55
5.56
to
5.65
to
5.65
5.66
to
5.75
to
5.75
5.76
to
5.85
to
5.85
5.86
to
6.00
to
6.00
6.01
or More
or More
Earth Gravity
0.89
or Less
or Less
0.90
to
0.91
to
0.91
0.92
to
0.93
to
0.93
0.94
to
0.95
to
0.95
0.96
to
0.97
to
0.97
0.98
to
1.02
to
1.02
1.03
to
1.04
to
1.04
1.05
to
1.06
to
1.06
1.07
to
1.08
to
1.08
1.09
to
1.10
to
1.10
1.11
or More
or More
Atmosphere
Toxic
?
?
?
?
78%
Nitrogen
21%
Oxygen
Nitrogen
21%
Oxygen
?
?
?
?
Toxic
Atmosphere Pressure
0.79
or Less
or Less
0.80
to
0.82
to
0.82
0.83
to
0.87
to
0.87
0.88
to
0.92
to
0.92
0.93
to
0.97
to
0.97
0.98
to
0.102
to
0.102
0.103
to
0.107
to
0.107
0.108
to
0.112
to
0.112
0.113
to
0.117
to
0.117
0.118
to
0.120
to
0.120
0.121
or More
or More
Ozone Layer
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Magnetic Field
(Protects a planet from
solar flares and space radiation)
(Protects a planet from
solar flares and space radiation)
0.79
or Less
or Less
0.80
to
0.82
to
0.82
0.83
to
0.87
to
0.87
0.88
to
0.92
to
0.92
0.93
to
0.97
to
0.97
0.98
to
0.102
to
0.102
0.103
to
0.107
to
0.107
0.108
to
0.112
to
0.112
0.113
to
0.117
to
0.117
0.118
to
0.120
to
0.120
0.121
or More
or More
Parent Star
Solar Flares
Solar Flares
Weak
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Moderate
Flares
Flares
Extreme
Flares
Flares
Average
Temperature
Temperature
Cold
to
Freezing
to
Freezing
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Warm
(45 ° to 95 °)
(45 ° to 95 °)
Hot
to
Inferno
to
Inferno
Greenhouse
Effect
Effect
Lower
and
Below
and
Below
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
Moderate
Elevated
and
Higher
and
Higher
Liquid Water
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Land
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Plants
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Animals
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Intelligent Beings
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Stabilizing Moon
(Stabilizes the tilt of the planet axis. Without a moon, a planet's tilt axis would vary more, with potentially stronger climatic effects)
(Stabilizes the tilt of the planet axis. Without a moon, a planet's tilt axis would vary more, with potentially stronger climatic effects)
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Paradise
Warm
Breathable
Rocky
Grasslands, Plains, Forest,
Jungle, Mountains
Jungle, Mountains
Iron/Nickel Core
Silcon Crust
Silcon Crust
Moderate
Liquid
Water
Oceans
Water
Oceans
Terran
Unknown
Gaia
Warm
Breathable
Rocky
Grasslands, Plains, Forest,
Jungle, Mountains
Jungle, Mountains
Iron/Nickel Core
Silicon Crust
Silicon Crust
Moderate
Liquid
Water
Oceans
Water
Ice
Caps
Water
Oceans
Water
Ice
Caps
Terran
Unknown
Lush
Warm
Breathable
Rocky
Grasslands, Plains, Forest,
Jungle, Mountains, Volcanoes,
Tundra, Desert
Jungle, Mountains, Volcanoes,
Tundra, Desert
Iron/Nickel Core
Silicon Crust
Silicon Crust
Moderate
Liquid
Water
Oceans
Water
Ice
Caps
Water
Oceans
Water
Ice
Caps
Terran
Earth
Arid
Warm
Breathable
Rocky
Grasslands, Plains, Mountains, Volcanoes, Tundra, Desert
Iron/Nickel Core
Silicon Crust
Silicon Crust
Moderate
Liquid
Water
Lakes
Water
Lakes
Terran
Unknown
Barren
Freezing
to
Inferno
to
Inferno
Toxic
to
Breathable
to
Breathable
Rocky
Rock Plains, Mountains,
Volcanoes, Desert
Volcanoes, Desert
Iron/Nickel Core
Silicon Crust
Silicon Crust
Weak
to
Extreme
to
Extreme
No
Liquid
Water
Water
Ice
Caps
Liquid
Water
Water
Ice
Caps
Plutonian
to
Super Terran
to
Super Terran
Mars
Desolate
Freezing
to
Inferno
to
Inferno
No Atmosphere
Rocky
Cratered
Iron/Nickel Core
Silicon Crust
Silicon Crust
Weak
to
Extreme
to
Extreme
No
Liquid
Water
Water
Ice
Possible
Liquid
Water
Water
Ice
Possible
Plutonian
to
Super Terran
to
Super Terran
Moon
Radiated
Freezing
to
Inferno
to
Inferno
No Atmosphere
to
Hazardous
to
Hazardous
Rocky
Cratered, Rock Plains, Mountains,
Volcanoes, Desert
Volcanoes, Desert
Iron/Nickel Core
Silicon Crust
Silicon Crust
Weak
to
Extreme
to
Extreme
Varies
Plutonian
to
Super Terran
to
Super Terran
Mercury
Hellish
Very Hot
to
Inferno
to
Inferno
Toxic
Rocky
Rock Plains, Mountains,
Volcanoes, Flowing Lava, Desert
Volcanoes, Flowing Lava, Desert
Iron/Nickel Core
Silicon Crust
or
Sulfur Crust
Silicon Crust
or
Sulfur Crust
Weak
to
Extreme
to
Extreme
No
Liquid
Water
or Ice
Liquid
Water
or Ice
Plutonian
to
Super Terran
to
Super Terran
Venus
Io
Io
Frozen
Freezing
No Atmosphere
to
Hazardous
to
Hazardous
Rocky
Rock Plains and Mountains
Iron/Nickel Core
Water
Ice
Crust
Water
Ice
Crust
Weak
to
Extreme
to
Extreme
Liquid
Water
below
Crust
Water
below
Crust
Plutonian
to
Super Terran
to
Super Terran
Europa
Ganymede
Callisto
Enceladus
Ganymede
Callisto
Enceladus
Ice Dwarf
Freezing
Toxic
to
Hazardous
to
Hazardous
Gaseous
No Surface
Rock &
Ice
Core
Ice
Core
Moderate
to
Extreme
to
Extreme
No
Liquid
Water
Liquid
Water
Sub Neptunian
Unknown
Ice Giant
Freezing
Toxic
to
Hazardous
to
Hazardous
Gaseous
No Surface
Rock &
Ice
Core
Ice
Core
Moderate
to
Extreme
to
Extreme
No
Liquid
Water
Liquid
Water
Neptunian
Uranus
Neptune
Neptune
Gas Dwarf
Freezing
to
Inferno
to
Inferno
Toxic
to
Hazardous
to
Hazardous
Gaseous
No Surface
Rock &
Metal
Core
Metal
Core
Moderate
to
Extreme
to
Extreme
No
Liquid
Water
Liquid
Water
Jovian
Saturn
Gas Giant
Freezing
to
Inferno
to
Inferno
Toxic
to
Hazardous
to
Hazardous
Gaseous
No Surface
Rock &
Metal
Core
Metal
Core
Moderate
to
Extreme
to
Extreme
No
Liquid
Water
Liquid
Water
Super Jovian
Jupiter
Alien
Freezing
to
Cold
to
Cold
Toxic
to
Hazardous
to
Hazardous
Rocky
Rock Plains and Mountains
Silicate
Rock
Core
Water
Ice
Crust
Rock
Core
Water
Ice
Crust
Weak
to
Extreme
to
Extreme
Liquid
Methane
&
Ethane
Lakes
Methane
&
Ethane
Lakes
Plutonian
to
Super Terran
to
Super Terran
Titan
Carbon
Freezing
to
Cold
to
Cold
Toxic
to
Hazardous
to
Hazardous
Rocky
Rock Plains and Mountains
Iron or
Steel Core
Graphite &
Diamond
Layer
Hydrocarbon
Crust
Steel Core
Graphite &
Diamond
Layer
Hydrocarbon
Crust
Weak
to
Extreme
to
Extreme
Hydro-
carbon
Oil
Rivers
carbon
Oil
Rivers
Plutonian
to
Super Terran
to
Super Terran
55 Cancri e?
Star
Has enough mass to sustain
Thermonuclear Fusion
Thermonuclear Fusion
0.08 Solar Masses or more
Sol
(Our Sun)
(Our Sun)
Brown Dwarf
Does not have enough mass to sustain
Thermonuclear Fusion. A Failed Star.
Thermonuclear Fusion. A Failed Star.
13 to 80 Jupiter Mass
Luhman 16
Rogue Planet
?
Does not orbit a star
0.002 Earth Mass
to
5 Jupiter Mass
to
5 Jupiter Mass
None
Major Planet
Orbits a star, has enough mass to be round,
and has cleared the neighborhood of its orbit.
0.006 Earth Mass
to
5 Jupiter Mass
to
5 Jupiter Mass
Gliese 3021 b
Dwarf Planet
Orbits a star, has enough mass to be round,
and has not cleared the neighborhood of its orbit.
0.00016
to
0.005 Earth Mass
to
0.005 Earth Mass
Pluto, Ceres
