🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.14

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.48 AU - 0.6 AU

Year: 256 Days

Day: 35.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 17.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,350,428 km

• M1: 241,002 km (0.112 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 829.2

Radius: 10.4

Gravity: 7.67 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.6 AU - 0.8 AU

Year: 378 Days

Day: 10.3 Hours

Environment

Temp: -147 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 72,350,428 km

• M1: 129,402 km (0.109 R)
• M2: 505,790 km (0.085 R)
• M3: 902,225 km (0.099 R)
• M4: 1,350,570 km (0.075 R)
• M5: 1,746,705 km (0.115 R)
• M6: 2,083,898 km (0.083 R)
• M7: 2,799,126 km (0.091 R)
• M8: 3,428,185 km (0.052 R)
• M9: 4,727,891 km (0.117 R)
• M10: 5,091,264 km (0.118 R)
• M11: 5,588,228 km (0.058 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.4

Radius: 12.6

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 3.14 AU - 3.36 AU

Year: 3783 Days

Day: 12.2 Hours

Environment

Temp: -209 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 72,350,428 km

• M1: 156,779 km (0.116 R)
• M2: 617,540 km (0.117 R)
• M3: 1,164,619 km (0.116 R)
• M4: 2,018,823 km (0.06 R)
• M5: 2,429,021 km (0.045 R)
• M6: 3,255,549 km (0.105 R)
• M7: 4,340,732 km (0.091 R)
• M8: 4,989,239 km (0.096 R)
• M9: 5,725,709 km (0.114 R)
• M10: 7,131,630 km (0.057 R)
• M11: 7,648,042 km (0.117 R)
• M12: 8,375,386 km (0.116 R)
• M13: 8,918,277 km (0.044 R)
• M14: 10,432,806 km (0.045 R)
• M15: 14,099,300 km (0.028 R)
• M16: 14,548,543 km (0.099 R)
• M17: 16,442,003 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.2

Radius: 11.4

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 2.95 AU - 4.83 AU

Year: 4954 Days

Day: 12.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 72,350,428 km

• M1: 141,968 km (0.113 R)
• M2: 572,212 km (0.08 R)
• M3: 1,007,691 km (0.061 R)
• M4: 1,985,613 km (0.092 R)
• M5: 2,555,281 km (0.086 R)
• M6: 2,919,103 km (0.109 R)
• M7: 3,300,279 km (0.091 R)
• M8: 4,043,630 km (0.057 R)
• M9: 5,388,366 km (0.036 R)
• M10: 5,785,997 km (0.044 R)
• M11: 6,256,931 km (0.116 R)
• M12: 7,011,203 km (0.104 R)
• M13: 8,014,257 km (0.079 R)
• M14: 8,434,627 km (0.117 R)
• M15: 9,785,496 km (0.086 R)
• M16: 10,266,303 km (0.108 R)
• M17: 12,650,146 km (0.079 R)
• M18: 13,535,915 km (0.093 R)
• M19: 14,652,812 km (0.028 R)
• M20: 17,658,682 km (0.093 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 12.1

Radius: 5.8

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 5.79 AU - 7.39 AU

Year: 10923 Days

Day: 17.6 Hours

Environment

Temp: -230 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 72,350,428 km

• M1: 72,106 km (0.071 R)
• M2: 656,286 km (0.086 R)
• M3: 933,940 km (0.088 R)
• M4: 1,240,316 km (0.107 R)
• M5: 1,630,916 km (0.091 R)
• M6: 4,230,927 km (0.079 R)
• M7: 5,300,701 km (0.074 R)
• M8: 10,292,483 km (0.117 R)
• M9: 11,044,212 km (0.099 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 64.3

Radius: 3.1

Gravity: 6.69 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 6 AU - 9.02 AU

Year: 13288 Days

Day: 23 Hours

Environment

Temp: -225 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 72,350,428 km

• M1: 62,532 km (0.07 R)
• M2: 218,862 km (0.097 R)
• M3: 362,625 km (0.104 R)
• M4: 464,352 km (0.107 R)
• M5: 634,445 km (0.059 R)
• M6: 741,407 km (0.074 R)
• M7: 974,780 km (0.039 R)
• M8: 1,306,588 km (0.09 R)
• M9: 1,931,309 km (0.075 R)
• M10: 2,716,249 km (0.092 R)
• M11: 3,019,483 km (0.096 R)
• M12: 4,730,434 km (0.075 R)
• M13: 5,465,857 km (0.036 R)
• M14: 6,581,558 km (0.108 R)
• M15: 7,093,632 km (0.116 R)
• M16: 7,981,645 km (0.111 R)
• M17: 9,528,487 km (0.117 R)
• M18: 9,933,897 km (0.065 R)
• M19: 11,041,968 km (0.093 R)
• M20: 12,324,471 km (0.077 R)
• M21: 15,071,836 km (0.096 R)
• M22: 16,014,602 km (0.042 R)
• M23: 16,299,286 km (0.093 R)
• M24: 18,511,091 km (0.069 R)
• M25: 22,015,870 km (0.037 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 913.5

Radius: 3.1

Gravity: 95.06 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 8.11 AU - 9.23 AU

Year: 16483 Days

Day: 17.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 72,350,428 km

• M1: 65,973 km (0.104 R)
• M2: 165,754 km (0.082 R)
• M3: 281,992 km (0.112 R)
• M4: 460,612 km (0.119 R)
• M5: 627,264 km (0.054 R)
• M6: 876,644 km (0.09 R)
• M7: 1,407,866 km (0.09 R)
• M8: 2,449,665 km (0.074 R)
• M9: 2,731,208 km (0.117 R)
• M10: 3,166,389 km (0.108 R)
• M11: 3,529,163 km (0.11 R)
• M12: 3,675,769 km (0.12 R)
• M13: 4,076,243 km (0.071 R)
• M14: 4,403,413 km (0.038 R)
• M15: 4,854,601 km (0.071 R)
• M16: 5,529,137 km (0.092 R)
• M17: 5,647,320 km (0.059 R)
• M18: 7,974,464 km (0.09 R)
• M19: 9,236,322 km (0.099 R)
• M20: 11,884,504 km (0.055 R)
• M21: 14,619,302 km (0.07 R)
• M22: 14,997,635 km (0.058 R)
• M23: 16,414,028 km (0.091 R)
• M24: 19,875,424 km (0.107 R)
• M25: 20,060,177 km (0.068 R)
• M26: 21,971,888 km (0.118 R)
• M27: 22,769,394 km (0.11 R)
• M28: 24,954,271 km (0.085 R)
• M29: 26,374,553 km (0.081 R)
• M30: 31,958,444 km (0.116 R)
• M31: 37,010,812 km (0.069 R)
• M32: 43,963,523 km (0.071 R)
• M33: 46,678,126 km (0.1 R)
• M34: 48,325,947 km (0.075 R)
• M35: 53,680,204 km (0.103 R)
• M36: 56,222,620 km (0.067 R)
• M37: 56,592,276 km (0.11 R)
• M38: 57,336,376 km (0.089 R)
• M39: 59,034,461 km (0.047 R)
• M40: 69,931,769 km (0.051 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 481.2

Radius: 4.6

Gravity: 22.74 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 9.35 AU - 11.75 AU

Year: 22126 Days

Day: 23.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 72,350,428 km

• M1: 59,390 km (0.088 R)
• M2: 471,832 km (0.067 R)
• M3: 1,448,706 km (0.038 R)
• M4: 2,169,468 km (0.059 R)
• M5: 2,949,023 km (0.051 R)
• M6: 3,291,452 km (0.103 R)
• M7: 3,486,678 km (0.087 R)
• M8: 4,214,920 km (0.094 R)
• M9: 5,003,301 km (0.097 R)
• M10: 7,139,858 km (0.036 R)
• M11: 7,515,049 km (0.097 R)
• M12: 7,952,772 km (0.039 R)
• M13: 10,518,226 km (0.102 R)
• M14: 14,456,390 km (0.103 R)
• M15: 15,594,531 km (0.08 R)
• M16: 16,385,754 km (0.093 R)
• M17: 21,995,674 km (0.09 R)
• M18: 26,261,158 km (0.083 R)
• M19: 27,040,563 km (0.027 R)
• M20: 27,835,227 km (0.111 R)
• M21: 39,336,910 km (0.069 R)
• M22: 39,771,791 km (0.039 R)
• M23: 39,917,349 km (0.118 R)
• M24: 68,099,045 km (0.114 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 194 - 18,124 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit