🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.45 AU - 0.61 AU

Year: 253 Days

Day: 44.5 Hours

Environment

Temp: -111 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,644,425 km

• M1: 112,049 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.4

Radius: 13.8

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.71 AU - 0.87 AU

Year: 461 Days

Day: 11.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,644,425 km

• M1: 171,738 km (0.033 R)
• M2: 703,559 km (0.088 R)
• M3: 1,161,328 km (0.112 R)
• M4: 1,737,130 km (0.102 R)
• M5: 2,454,303 km (0.027 R)
• M6: 2,979,092 km (0.117 R)
• M7: 3,530,061 km (0.1 R)
• M8: 4,244,690 km (0.085 R)
• M9: 4,808,524 km (0.097 R)
• M10: 5,587,780 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763

Radius: 10.3

Gravity: 7.19 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.77 AU - 0.91 AU

Year: 505 Days

Day: 13.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,644,425 km

• M1: 128,056 km (0.109 R)
• M2: 490,681 km (0.104 R)
• M3: 907,012 km (0.094 R)
• M4: 1,242,261 km (0.047 R)
• M5: 1,617,751 km (0.088 R)
• M6: 2,078,064 km (0.12 R)
• M7: 2,492,001 km (0.045 R)
• M8: 2,983,281 km (0.05 R)
• M9: 3,362,511 km (0.103 R)
• M10: 4,305,876 km (0.107 R)
• M11: 4,713,829 km (0.038 R)
• M12: 5,147,513 km (0.101 R)
• M13: 5,502,958 km (0.078 R)
• M14: 5,984,364 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.4

Radius: 11.7

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 2 AU - 2.34 AU

Year: 2097 Days

Day: 8.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 38,644,425 km

• M1: 145,559 km (0.034 R)
• M2: 591,959 km (0.054 R)
• M3: 1,142,180 km (0.105 R)
• M4: 1,750,295 km (0.058 R)
• M5: 2,152,414 km (0.083 R)
• M6: 2,733,003 km (0.118 R)
• M7: 3,176,561 km (0.082 R)
• M8: 3,749,222 km (0.025 R)
• M9: 4,174,529 km (0.068 R)
• M10: 4,824,083 km (0.064 R)
• M11: 5,225,005 km (0.103 R)
• M12: 6,139,796 km (0.073 R)
• M13: 6,956,151 km (0.105 R)
• M14: 8,174,177 km (0.107 R)
• M15: 10,457,490 km (0.105 R)
• M16: 11,305,111 km (0.087 R)
• M17: 11,979,498 km (0.108 R)
• M18: 12,382,066 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 91.2

Radius: 14.9

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 2.77 AU - 3.65 AU

Year: 3773 Days

Day: 5 Hours

Environment

Temp: -210 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 38,644,425 km

• M1: 199,414 km (0.075 R)
• M2: 743,950 km (0.048 R)
• M3: 1,451,548 km (0.085 R)
• M4: 2,049,640 km (0.079 R)
• M5: 2,706,674 km (0.052 R)
• M6: 4,007,129 km (0.104 R)
• M7: 4,788,777 km (0.1 R)
• M8: 5,867,976 km (0.107 R)
• M9: 6,441,984 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.2

Radius: 9.5

Gravity: 0.27 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 4.17 AU - 4.41 AU

Year: 5829 Days

Day: 11.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,644,425 km

• M1: 122,371 km (0.073 R)
• M2: 595,699 km (0.106 R)
• M3: 1,018,014 km (0.11 R)
• M4: 1,671,307 km (0.047 R)
• M5: 2,546,305 km (0.082 R)
• M6: 5,593,913 km (0.12 R)
• M7: 6,880,156 km (0.103 R)
• M8: 7,901,610 km (0.102 R)
• M9: 8,489,829 km (0.099 R)
• M10: 9,309,475 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.5

Radius: 11.2

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 4.28 AU - 4.48 AU

Year: 6013 Days

Day: 12.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 38,644,425 km

• M1: 139,276 km (0.056 R)
• M2: 490,382 km (0.086 R)
• M3: 1,016,218 km (0.114 R)
• M4: 1,371,663 km (0.116 R)
• M5: 1,988,904 km (0.083 R)
• M6: 2,426,926 km (0.072 R)
• M7: 3,335,434 km (0.107 R)
• M8: 4,167,497 km (0.111 R)
• M9: 5,466,605 km (0.104 R)
• M10: 6,209,658 km (0.075 R)
• M11: 6,589,637 km (0.105 R)
• M12: 7,052,492 km (0.116 R)
• M13: 7,896,673 km (0.111 R)
• M14: 9,369,464 km (0.109 R)
• M15: 10,389,423 km (0.115 R)
• M16: 12,202,698 km (0.115 R)
• M17: 13,787,538 km (0.119 R)
• M18: 15,333,333 km (0.102 R)
• M19: 17,114,595 km (0.047 R)
• M20: 17,800,950 km (0.098 R)
• M21: 21,013,115 km (0.111 R)
• M22: 21,727,894 km (0.117 R)
• M23: 22,532,730 km (0.057 R)
• M24: 24,908,345 km (0.099 R)
• M25: 28,821,227 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 490.8

Radius: 3.7

Gravity: 35.85 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 5.35 AU - 6.71 AU

Year: 9714 Days

Day: 23.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 38,644,425 km

• M1: 74,649 km (0.073 R)
• M2: 505,790 km (0.056 R)
• M3: 1,297,911 km (0.06 R)
• M4: 1,801,757 km (0.087 R)
• M5: 1,958,087 km (0.101 R)
• M6: 2,519,677 km (0.048 R)
• M7: 3,457,506 km (0.069 R)
• M8: 3,625,654 km (0.056 R)
• M9: 4,989,987 km (0.119 R)
• M10: 5,752,637 km (0.116 R)
• M11: 5,886,826 km (0.119 R)
• M12: 12,072,548 km (0.093 R)
• M13: 14,031,831 km (0.116 R)
• M14: 21,240,654 km (0.057 R)
• M15: 23,047,048 km (0.052 R)
• M16: 23,987,420 km (0.03 R)
• M17: 27,338,263 km (0.116 R)
• M18: 29,571,161 km (0.036 R)
• M19: 33,090,002 km (0.117 R)
• M20: 34,065,978 km (0.065 R)
• M21: 36,993,309 km (0.042 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 353.4

Radius: 5.9

Gravity: 10.15 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 5.51 AU - 6.85 AU

Year: 10078 Days

Day: 24.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 38,644,425 km

• M1: 73,453 km (0.055 R)
• M2: 456,722 km (0.117 R)
• M3: 2,616,766 km (0.07 R)
• M4: 3,359,071 km (0.107 R)
• M5: 3,658,865 km (0.118 R)
• M6: 3,852,295 km (0.061 R)
• M7: 5,496,824 km (0.069 R)
• M8: 7,954,867 km (0.099 R)
• M9: 8,198,113 km (0.11 R)
• M10: 11,263,523 km (0.108 R)
• M11: 13,416,984 km (0.034 R)
• M12: 15,958,054 km (0.032 R)
• M13: 17,273,917 km (0.119 R)
• M14: 22,690,556 km (0.11 R)
• M15: 23,928,479 km (0.055 R)
• M16: 25,912,894 km (0.119 R)
• M17: 33,879,579 km (0.052 R)
• M18: 35,494,339 km (0.102 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 249 - 13,711 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit