🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.54

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 17.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 79,087,735 km

• M1: 216,019 km (0.085 R)
• M2: 389,403 km (0.059 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.4

Radius: 12.3

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.84 AU - 0.86 AU

Year: 506 Days

Day: 13.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 79,087,735 km

• M1: 154,983 km (0.049 R)
• M2: 563,236 km (0.069 R)
• M3: 1,192,295 km (0.117 R)
• M4: 2,198,939 km (0.058 R)
• M5: 2,609,735 km (0.05 R)
• M6: 4,534,162 km (0.104 R)
• M7: 4,959,319 km (0.095 R)
• M8: 5,603,188 km (0.099 R)
• M9: 6,340,407 km (0.095 R)
• M10: 6,732,802 km (0.043 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 219.6

Radius: 12.5

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.96 AU - 1.58 AU

Year: 924 Days

Day: 10 Hours

Environment

Temp: -171 °C

Axial Tilt: 66.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 79,087,735 km

• M1: 155,432 km (0.1 R)
• M2: 568,322 km (0.11 R)
• M3: 1,400,685 km (0.039 R)
• M4: 1,832,574 km (0.101 R)
• M5: 2,325,948 km (0.087 R)
• M6: 3,228,023 km (0.037 R)
• M7: 3,846,760 km (0.097 R)
• M8: 6,059,761 km (0.056 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.7

Radius: 9.5

Gravity: 8.43 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.25 AU - 3.71 AU

Year: 3322 Days

Day: 8.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 79,087,735 km

• M1: 121,922 km (0.032 R)
• M2: 579,243 km (0.113 R)
• M3: 1,512,584 km (0.107 R)
• M4: 1,975,440 km (0.047 R)
• M5: 2,334,774 km (0.097 R)
• M6: 2,939,299 km (0.053 R)
• M7: 4,390,698 km (0.048 R)
• M8: 5,818,609 km (0.06 R)
• M9: 7,274,795 km (0.107 R)
• M10: 10,394,210 km (0.112 R)
• M11: 10,723,475 km (0.042 R)
• M12: 14,512,489 km (0.055 R)
• M13: 14,820,511 km (0.112 R)
• M14: 15,238,039 km (0.071 R)
• M15: 17,272,271 km (0.032 R)
• M16: 17,910,455 km (0.07 R)
• M17: 19,049,643 km (0.091 R)
• M18: 23,594,277 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 205.3

Radius: 11.9

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 3.71 AU - 5.81 AU

Year: 6705 Days

Day: 12.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 124.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 79,087,735 km

• M1: 148,401 km (0.09 R)
• M2: 525,089 km (0.111 R)
• M3: 926,160 km (0.049 R)
• M4: 1,335,759 km (0.053 R)
• M5: 1,770,640 km (0.08 R)
• M6: 2,359,009 km (0.076 R)
• M7: 3,039,380 km (0.1 R)
• M8: 3,784,527 km (0.108 R)
• M9: 4,963,358 km (0.08 R)
• M10: 5,638,045 km (0.059 R)
• M11: 6,025,952 km (0.069 R)
• M12: 7,043,517 km (0.093 R)
• M13: 7,999,148 km (0.118 R)
• M14: 9,886,474 km (0.064 R)
• M15: 10,660,344 km (0.052 R)
• M16: 11,083,706 km (0.095 R)
• M17: 11,518,138 km (0.11 R)
• M18: 12,890,250 km (0.098 R)
• M19: 13,814,017 km (0.114 R)
• M20: 15,415,163 km (0.05 R)
• M21: 15,793,197 km (0.115 R)
• M22: 18,494,486 km (0.06 R)
• M23: 18,921,587 km (0.085 R)
• M24: 20,050,154 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237

Radius: 10.8

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 4.57 AU - 7.21 AU

Year: 9230 Days

Day: 13.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 79,087,735 km

• M1: 134,339 km (0.109 R)
• M2: 618,886 km (0.106 R)
• M3: 1,214,735 km (0.051 R)
• M4: 2,018,524 km (0.03 R)
• M5: 2,538,526 km (0.08 R)
• M6: 2,877,216 km (0.119 R)
• M7: 4,010,420 km (0.085 R)
• M8: 4,890,205 km (0.116 R)
• M9: 5,276,317 km (0.119 R)
• M10: 6,493,744 km (0.107 R)
• M11: 6,927,129 km (0.119 R)
• M12: 8,152,934 km (0.069 R)
• M13: 8,817,448 km (0.105 R)
• M14: 10,614,717 km (0.11 R)
• M15: 11,170,323 km (0.106 R)
• M16: 12,039,936 km (0.099 R)
• M17: 13,804,892 km (0.107 R)
• M18: 14,299,612 km (0.053 R)
• M19: 16,397,871 km (0.107 R)
• M20: 18,231,493 km (0.115 R)
• M21: 19,096,168 km (0.101 R)
• M22: 20,057,933 km (0.095 R)
• M23: 22,226,952 km (0.112 R)
• M24: 22,603,041 km (0.112 R)
• M25: 24,949,933 km (0.093 R)
• M26: 29,848,366 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 531

Radius: 5.4

Gravity: 18.21 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 11.01 AU - 11.31 AU

Year: 24072 Days

Day: 16.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 79,087,735 km

• M1: 72,256 km (0.111 R)
• M2: 293,361 km (0.119 R)
• M3: 527,931 km (0.103 R)
• M4: 799,002 km (0.087 R)
• M5: 1,488,349 km (0.098 R)
• M6: 1,692,700 km (0.107 R)
• M7: 7,267,913 km (0.069 R)
• M8: 7,961,150 km (0.117 R)
• M9: 8,643,316 km (0.035 R)
• M10: 12,788,673 km (0.115 R)
• M11: 14,547,645 km (0.118 R)
• M12: 18,447,961 km (0.092 R)
• M13: 25,244,042 km (0.041 R)
• M14: 29,316,396 km (0.115 R)
• M15: 35,583,350 km (0.066 R)
• M16: 39,771,791 km (0.093 R)
• M17: 49,978,853 km (0.088 R)
• M18: 54,470,081 km (0.086 R)
• M19: 67,603,727 km (0.087 R)
• M20: 75,815,154 km (0.105 R)
• M21: 76,973,340 km (0.027 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 241 - 12,800 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit