🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.57

Radius: 0.8

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.66 AU - 0.68 AU

Year: 354 Days

Day: 29.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 433

Radius: 14.9

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.56 AU - 0.84 AU

Year: 378 Days

Day: 13.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 83,795,868 km

• M1: 185,801 km (0.064 R)
• M2: 741,407 km (0.107 R)
• M3: 1,447,060 km (0.086 R)
• M4: 2,256,385 km (0.03 R)
• M5: 2,720,138 km (0.073 R)
• M6: 3,238,046 km (0.099 R)
• M7: 4,121,721 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 446.6

Radius: 13.5

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.44 AU - 1.72 AU

Year: 1282 Days

Day: 13.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 83,795,868 km

• M1: 167,849 km (0.087 R)
• M2: 747,690 km (0.083 R)
• M3: 2,063,852 km (0.072 R)
• M4: 3,199,150 km (0.11 R)
• M5: 4,034,056 km (0.111 R)
• M6: 5,533,476 km (0.083 R)
• M7: 6,072,327 km (0.118 R)
• M8: 7,954,418 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.2

Radius: 14.7

Gravity: 3.31 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 3.63 AU - 3.77 AU

Year: 4595 Days

Day: 12.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 83,795,868 km

• M1: 182,809 km (0.117 R)
• M2: 807,380 km (0.078 R)
• M3: 1,353,562 km (0.108 R)
• M4: 2,093,473 km (0.082 R)
• M5: 2,838,769 km (0.114 R)
• M6: 3,323,915 km (0.097 R)
• M7: 5,509,091 km (0.093 R)
• M8: 7,616,776 km (0.108 R)
• M9: 9,346,426 km (0.077 R)
• M10: 10,217,834 km (0.096 R)
• M11: 10,828,642 km (0.11 R)
• M12: 12,708,788 km (0.111 R)
• M13: 14,095,560 km (0.098 R)
• M14: 15,638,064 km (0.072 R)
• M15: 19,450,416 km (0.114 R)
• M16: 19,983,732 km (0.108 R)
• M17: 21,289,572 km (0.119 R)
• M18: 23,541,469 km (0.114 R)
• M19: 26,189,351 km (0.1 R)
• M20: 27,335,421 km (0.063 R)
• M21: 27,836,573 km (0.119 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 187.3

Radius: 5.5

Gravity: 6.19 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 5.37 AU - 7.61 AU

Year: 10675 Days

Day: 18.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 83,795,868 km

• M1: 68,366 km (0.032 R)
• M2: 254,316 km (0.097 R)
• M3: 468,092 km (0.117 R)
• M4: 699,669 km (0.039 R)
• M5: 1,140,983 km (0.113 R)
• M6: 1,764,806 km (0.061 R)
• M7: 2,402,991 km (0.115 R)
• M8: 2,849,690 km (0.106 R)
• M9: 3,224,881 km (0.102 R)
• M10: 3,587,806 km (0.076 R)
• M11: 3,790,810 km (0.079 R)
• M12: 5,493,084 km (0.109 R)
• M13: 6,428,370 km (0.105 R)
• M14: 8,254,362 km (0.051 R)
• M15: 8,450,335 km (0.074 R)
• M16: 8,770,026 km (0.08 R)
• M17: 9,264,746 km (0.1 R)
• M18: 10,491,448 km (0.063 R)
• M19: 11,383,052 km (0.087 R)
• M20: 14,529,544 km (0.12 R)
• M21: 15,280,375 km (0.094 R)
• M22: 16,423,752 km (0.054 R)
• M23: 17,430,097 km (0.048 R)
• M24: 17,623,228 km (0.089 R)
• M25: 20,766,578 km (0.041 R)
• M26: 23,083,699 km (0.09 R)
• M27: 24,264,475 km (0.087 R)
• M28: 25,237,610 km (0.062 R)
• M29: 30,310,025 km (0.08 R)
• M30: 30,589,473 km (0.068 R)
• M31: 31,059,061 km (0.027 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 902

Radius: 3

Gravity: 100.22 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 9.3 AU - 10.52 AU

Year: 20143 Days

Day: 23.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 83,795,868 km

• M1: 37,549 km (0.09 R)
• M2: 373,995 km (0.09 R)
• M3: 1,561,054 km (0.068 R)
• M4: 1,798,316 km (0.06 R)
• M5: 2,413,762 km (0.03 R)
• M6: 4,597,143 km (0.05 R)
• M7: 4,779,951 km (0.079 R)
• M8: 6,154,606 km (0.104 R)
• M9: 6,837,071 km (0.115 R)
• M10: 9,185,010 km (0.086 R)
• M11: 11,814,492 km (0.092 R)
• M12: 12,019,441 km (0.105 R)
• M13: 12,935,279 km (0.037 R)
• M14: 15,548,754 km (0.112 R)
• M15: 20,486,232 km (0.047 R)
• M16: 25,228,783 km (0.085 R)
• M17: 25,911,698 km (0.111 R)
• M18: 29,636,984 km (0.07 R)
• M19: 34,116,094 km (0.084 R)
• M20: 35,941,337 km (0.103 R)
• M21: 42,281,594 km (0.05 R)
• M22: 47,756,427 km (0.061 R)
• M23: 56,341,550 km (0.033 R)
• M24: 70,050,849 km (0.03 R)
• M25: 70,946,491 km (0.098 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 515 - 14,451 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit