🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.58 AU - 0.62 AU

Year: 300 Days

Day: 45.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 626.2

Radius: 12.4

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.69 AU - 0.89 AU

Year: 453 Days

Day: 8.5 Hours

Environment

Temp: -152 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,310,310 km

• M1: 154,535 km (0.093 R)
• M2: 621,878 km (0.103 R)
• M3: 1,016,667 km (0.099 R)
• M4: 1,411,007 km (0.086 R)
• M5: 2,189,963 km (0.093 R)
• M6: 2,814,983 km (0.105 R)
• M7: 3,388,841 km (0.098 R)
• M8: 3,908,544 km (0.107 R)
• M9: 4,381,722 km (0.102 R)
• M10: 4,772,920 km (0.108 R)
• M11: 5,828,931 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.4

Radius: 9.7

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.86 AU - 1.3 AU

Year: 725 Days

Day: 13.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,310,310 km

• M1: 120,875 km (0.043 R)
• M2: 578,794 km (0.087 R)
• M3: 1,047,783 km (0.111 R)
• M4: 1,449,155 km (0.078 R)
• M5: 1,789,191 km (0.1 R)
• M6: 2,309,642 km (0.098 R)
• M7: 2,958,747 km (0.12 R)
• M8: 3,354,433 km (0.109 R)
• M9: 3,945,494 km (0.045 R)
• M10: 4,358,983 km (0.11 R)
• M11: 5,033,819 km (0.054 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.1

Radius: 13.8

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.25 AU - 1.31 AU

Year: 935 Days

Day: 9.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,310,310 km

• M1: 171,589 km (0.112 R)
• M2: 682,465 km (0.089 R)
• M3: 1,114,055 km (0.119 R)
• M4: 1,715,588 km (0.081 R)
• M5: 2,631,875 km (0.082 R)
• M6: 3,067,654 km (0.068 R)
• M7: 3,694,170 km (0.107 R)
• M8: 4,479,559 km (0.098 R)
• M9: 5,025,292 km (0.101 R)
• M10: 6,403,088 km (0.111 R)
• M11: 6,874,172 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715.9

Radius: 11.7

Gravity: 5.23 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 3.88 AU - 4.78 AU

Year: 5818 Days

Day: 14.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 47,310,310 km

• M1: 145,858 km (0.106 R)
• M2: 556,205 km (0.103 R)
• M3: 1,180,477 km (0.045 R)
• M4: 1,694,196 km (0.119 R)
• M5: 2,071,631 km (0.078 R)
• M6: 2,506,064 km (0.111 R)
• M7: 4,596,694 km (0.095 R)
• M8: 5,057,754 km (0.092 R)
• M9: 6,009,795 km (0.075 R)
• M10: 7,077,774 km (0.075 R)
• M11: 10,946,974 km (0.047 R)
• M12: 12,226,185 km (0.094 R)
• M13: 13,657,538 km (0.108 R)
• M14: 16,473,269 km (0.09 R)
• M15: 16,913,984 km (0.057 R)
• M16: 17,687,704 km (0.11 R)
• M17: 20,655,576 km (0.072 R)
• M18: 22,143,028 km (0.088 R)
• M19: 27,735,595 km (0.072 R)
• M20: 30,477,425 km (0.071 R)
• M21: 32,501,035 km (0.078 R)
• M22: 33,696,771 km (0.061 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 971.3

Radius: 3.6

Gravity: 74.95 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 6.68 AU - 9.3 AU

Year: 14583 Days

Day: 19.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 47,310,310 km

• M1: 44,730 km (0.043 R)
• M2: 415,732 km (0.053 R)
• M3: 723,007 km (0.08 R)
• M4: 931,546 km (0.115 R)
• M5: 1,139,038 km (0.117 R)
• M6: 1,376,899 km (0.108 R)
• M7: 1,531,583 km (0.12 R)
• M8: 1,767,798 km (0.097 R)
• M9: 2,509,205 km (0.045 R)
• M10: 4,213,424 km (0.092 R)
• M11: 4,849,365 km (0.097 R)
• M12: 5,062,841 km (0.055 R)
• M13: 5,357,249 km (0.063 R)
• M14: 7,368,144 km (0.097 R)
• M15: 8,136,778 km (0.109 R)
• M16: 10,058,811 km (0.091 R)
• M17: 12,928,398 km (0.071 R)
• M18: 16,142,209 km (0.113 R)
• M19: 18,962,278 km (0.06 R)
• M20: 23,276,681 km (0.069 R)
• M21: 23,680,146 km (0.046 R)
• M22: 28,315,885 km (0.101 R)
• M23: 28,660,110 km (0.116 R)
• M24: 30,184,362 km (0.105 R)
• M25: 32,759,391 km (0.105 R)
• M26: 36,958,902 km (0.061 R)
• M27: 37,232,666 km (0.056 R)
• M28: 41,355,883 km (0.097 R)
• M29: 49,326,308 km (0.059 R)
• M30: 50,158,820 km (0.077 R)
• M31: 54,994,272 km (0.113 R)
• M32: 57,158,354 km (0.084 R)
• M33: 58,632,193 km (0.106 R)
• M34: 63,205,250 km (0.088 R)
• M35: 63,400,774 km (0.119 R)
• M36: 67,601,034 km (0.099 R)
• M37: 68,421,578 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 169.9

Radius: 3.4

Gravity: 14.7 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 9.2 AU - 9.72 AU

Year: 18787 Days

Day: 19.6 Hours

Environment

Temp: -233 °C

Axial Tilt: 120 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 47,310,310 km

• M1: 42,336 km (0.059 R)
• M2: 267,331 km (0.113 R)
• M3: 436,975 km (0.057 R)
• M4: 571,015 km (0.107 R)
• M5: 801,845 km (0.088 R)
• M6: 943,963 km (0.1 R)
• M7: 1,380,788 km (0.072 R)
• M8: 1,923,380 km (0.101 R)
• M9: 2,865,547 km (0.119 R)
• M10: 3,245,975 km (0.08 R)
• M11: 4,443,356 km (0.061 R)
• M12: 4,648,305 km (0.108 R)
• M13: 4,859,537 km (0.103 R)
• M14: 5,398,987 km (0.08 R)
• M15: 8,437,170 km (0.07 R)
• M16: 9,643,528 km (0.114 R)
• M17: 12,220,949 km (0.108 R)
• M18: 13,697,480 km (0.052 R)
• M19: 15,822,817 km (0.109 R)
• M20: 17,212,432 km (0.065 R)
• M21: 17,572,065 km (0.08 R)
• M22: 18,306,591 km (0.118 R)
• M23: 18,681,333 km (0.096 R)
• M24: 22,714,641 km (0.065 R)
• M25: 23,497,487 km (0.117 R)
• M26: 26,904,728 km (0.073 R)
• M27: 32,337,525 km (0.111 R)
• M28: 38,092,106 km (0.118 R)
• M29: 41,465,837 km (0.108 R)
• M30: 43,027,190 km (0.078 R)
• M31: 43,159,135 km (0.084 R)
• M32: 43,423,624 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 135.7

Radius: 6.8

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 8.76 AU - 12.28 AU

Year: 22031 Days

Day: 20.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 84.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,310,310 km

• M1: 96,341 km (0.113 R)
• M2: 737,368 km (0.097 R)
• M3: 5,640,588 km (0.085 R)
• M4: 8,693,132 km (0.094 R)
• M5: 11,069,644 km (0.059 R)
• M6: 11,669,681 km (0.101 R)
• M7: 14,868,383 km (0.063 R)
• M8: 22,238,023 km (0.088 R)
• M9: 23,724,128 km (0.109 R)
• M10: 25,744,148 km (0.118 R)
• M11: 27,776,585 km (0.093 R)
• M12: 31,075,816 km (0.091 R)
• M13: 38,563,190 km (0.096 R)
• M14: 40,830,944 km (0.113 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 440 - 17,323 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit