🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.77

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.53 AU - 0.65 AU

Year: 293 Days

Day: 12.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 15.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.28

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.61 AU - 0.69 AU

Year: 338 Days

Day: 14.3 Hours

Environment

Temp: -136 °C

Axial Tilt: 148.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 26,953,904 km

• M1: 291,417 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.8

Radius: 12.5

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.79 AU - 1.13 AU

Year: 607 Days

Day: 14 Hours

Environment

Temp: -166 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 26,953,904 km

• M1: 155,432 km (0.035 R)
• M2: 614,249 km (0.105 R)
• M3: 1,134,550 km (0.101 R)
• M4: 1,531,882 km (0.11 R)
• M5: 1,973,196 km (0.076 R)
• M6: 2,781,174 km (0.084 R)
• M7: 3,238,196 km (0.079 R)
• M8: 4,032,710 km (0.119 R)
• M9: 4,453,977 km (0.048 R)
• M10: 5,067,179 km (0.118 R)
• M11: 5,559,206 km (0.102 R)
• M12: 6,101,648 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 322.8

Radius: 15

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.78 AU - 1.14 AU

Year: 607 Days

Day: 13.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 26,953,904 km

• M1: 186,997 km (0.072 R)
• M2: 765,492 km (0.09 R)
• M3: 1,337,704 km (0.066 R)
• M4: 2,250,700 km (0.098 R)
• M5: 3,858,727 km (0.102 R)
• M6: 4,388,902 km (0.073 R)
• M7: 4,982,955 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.1

Radius: 9.2

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.95 AU - 1.39 AU

Year: 817 Days

Day: 10.8 Hours

Environment

Temp: -170 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 26,953,904 km

• M1: 114,442 km (0.086 R)
• M2: 444,754 km (0.068 R)
• M3: 770,279 km (0.034 R)
• M4: 1,076,656 km (0.117 R)
• M5: 1,611,319 km (0.107 R)
• M6: 2,468,215 km (0.081 R)
• M7: 2,878,263 km (0.1 R)
• M8: 4,711,884 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 413.9

Radius: 13.6

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.85 AU - 2.33 AU

Year: 1951 Days

Day: 12.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 26,953,904 km

• M1: 175,030 km (0.099 R)
• M2: 896,241 km (0.119 R)
• M3: 1,954,795 km (0.083 R)
• M4: 2,782,072 km (0.06 R)
• M5: 3,681,604 km (0.09 R)
• M6: 4,254,264 km (0.116 R)
• M7: 5,214,683 km (0.112 R)
• M8: 5,893,857 km (0.1 R)
• M9: 6,508,405 km (0.112 R)
• M10: 8,642,269 km (0.083 R)
• M11: 9,595,507 km (0.061 R)
• M12: 10,754,591 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 461.3

Radius: 8.6

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 2.26 AU - 2.76 AU

Year: 2568 Days

Day: 8.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 26,953,904 km

• M1: 115,340 km (0.065 R)
• M2: 473,178 km (0.091 R)
• M3: 746,643 km (0.103 R)
• M4: 2,079,111 km (0.048 R)
• M5: 3,181,348 km (0.063 R)
• M6: 3,500,889 km (0.114 R)
• M7: 4,010,869 km (0.099 R)
• M8: 4,548,972 km (0.083 R)
• M9: 5,202,266 km (0.108 R)
• M10: 5,575,513 km (0.064 R)
• M11: 6,220,130 km (0.045 R)
• M12: 7,423,196 km (0.105 R)
• M13: 8,872,351 km (0.089 R)
• M14: 9,338,198 km (0.105 R)
• M15: 10,537,824 km (0.112 R)
• M16: 14,842,802 km (0.099 R)
• M17: 15,452,263 km (0.119 R)
• M18: 16,274,154 km (0.117 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.7

Radius: 11.2

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 2.88 AU - 3.08 AU

Year: 3322 Days

Day: 10.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 26,953,904 km

• M1: 139,276 km (0.079 R)
• M2: 523,144 km (0.05 R)
• M3: 879,336 km (0.027 R)
• M4: 1,351,617 km (0.069 R)
• M5: 2,003,564 km (0.043 R)
• M6: 2,886,341 km (0.111 R)
• M7: 3,875,482 km (0.105 R)
• M8: 4,940,320 km (0.115 R)
• M9: 6,650,822 km (0.113 R)
• M10: 11,926,840 km (0.11 R)
• M11: 12,343,769 km (0.101 R)
• M12: 13,518,561 km (0.066 R)
• M13: 15,344,852 km (0.119 R)
• M14: 17,650,305 km (0.063 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 147.8

Radius: 10.9

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 3.02 AU - 3.82 AU

Year: 4084 Days

Day: 10.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 26,953,904 km

• M1: 135,536 km (0.113 R)
• M2: 487,390 km (0.086 R)
• M3: 861,385 km (0.099 R)
• M4: 1,435,840 km (0.094 R)
• M5: 1,859,801 km (0.095 R)
• M6: 2,341,506 km (0.088 R)
• M7: 2,689,321 km (0.066 R)
• M8: 3,102,660 km (0.08 R)
• M9: 3,874,734 km (0.114 R)
• M10: 6,089,531 km (0.085 R)
• M11: 8,228,780 km (0.062 R)
• M12: 8,817,598 km (0.102 R)
• M13: 9,269,383 km (0.1 R)
• M14: 10,645,983 km (0.08 R)
• M15: 11,649,186 km (0.111 R)
• M16: 12,272,860 km (0.103 R)
• M17: 12,836,694 km (0.071 R)
• M18: 14,947,221 km (0.113 R)

Planet 10 - Gas Giant

Semi-Major Axis: 4.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.4

Radius: 10

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 3.78 AU - 5.98 AU

Year: 6961 Days

Day: 5 Hours

Environment

Temp: -218 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 26,953,904 km

• M1: 124,316 km (0.11 R)
• M2: 490,681 km (0.039 R)
• M3: 1,020,108 km (0.119 R)
• M4: 1,345,034 km (0.085 R)
• M5: 2,112,172 km (0.033 R)
• M6: 3,054,489 km (0.098 R)
• M7: 4,563,782 km (0.07 R)
• M8: 5,775,824 km (0.074 R)
• M9: 6,395,608 km (0.053 R)
• M10: 6,801,168 km (0.031 R)
• M11: 7,526,418 km (0.102 R)
• M12: 7,943,348 km (0.066 R)
• M13: 8,412,487 km (0.059 R)
• M14: 8,747,885 km (0.087 R)
• M15: 10,390,919 km (0.048 R)
• M16: 10,734,096 km (0.099 R)
• M17: 12,325,219 km (0.096 R)
• M18: 13,554,315 km (0.086 R)
• M19: 18,159,686 km (0.111 R)
• M20: 19,553,040 km (0.036 R)
• M21: 20,010,959 km (0.115 R)
• M22: 20,342,318 km (0.099 R)
• M23: 21,427,651 km (0.096 R)
• M24: 22,479,773 km (0.074 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 551 - 15,609 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit