🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.56 AU - 0.72 AU

Year: 336 Days

Day: 37.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 13.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 315.3

Radius: 13

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.7 AU - 0.9 AU

Year: 469 Days

Day: 13.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 60,512,239 km

• M1: 161,715 km (0.082 R)
• M2: 566,228 km (0.112 R)
• M3: 1,161,927 km (0.088 R)
• M4: 1,758,074 km (0.08 R)
• M5: 2,969,817 km (0.115 R)
• M6: 3,588,554 km (0.032 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.5

Radius: 9.2

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.7 AU - 1.06 AU

Year: 542 Days

Day: 8.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 147.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 60,512,239 km

• M1: 114,442 km (0.085 R)
• M2: 456,872 km (0.111 R)
• M3: 951,143 km (0.091 R)
• M4: 1,350,121 km (0.117 R)
• M5: 1,649,017 km (0.031 R)
• M6: 1,978,282 km (0.075 R)
• M7: 2,408,675 km (0.107 R)
• M8: 3,241,187 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 502.6

Radius: 9.5

Gravity: 5.57 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.27 AU - 1.59 AU

Year: 1122 Days

Day: 6.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,512,239 km

• M1: 118,182 km (0.053 R)
• M2: 475,272 km (0.107 R)
• M3: 864,975 km (0.069 R)
• M4: 1,217,128 km (0.11 R)
• M5: 2,264,762 km (0.1 R)
• M6: 2,949,322 km (0.061 R)
• M7: 4,128,901 km (0.06 R)
• M8: 4,619,732 km (0.088 R)
• M9: 5,092,611 km (0.071 R)
• M10: 5,497,871 km (0.112 R)
• M11: 6,775,587 km (0.098 R)
• M12: 7,606,902 km (0.088 R)
• M13: 8,241,197 km (0.092 R)
• M14: 9,329,073 km (0.095 R)
• M15: 9,644,276 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 620.5

Radius: 15

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 3.02 AU - 3.32 AU

Year: 3703 Days

Day: 11.5 Hours

Environment

Temp: -213 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 60,512,239 km

• M1: 186,698 km (0.105 R)
• M2: 679,922 km (0.113 R)
• M3: 1,447,808 km (0.114 R)
• M4: 2,059,963 km (0.107 R)
• M5: 2,943,936 km (0.081 R)
• M6: 3,759,095 km (0.114 R)
• M7: 4,720,860 km (0.099 R)
• M8: 5,466,905 km (0.117 R)
• M9: 6,348,335 km (0.077 R)
• M10: 6,884,793 km (0.082 R)
• M11: 7,354,830 km (0.1 R)
• M12: 7,846,408 km (0.115 R)
• M13: 8,500,600 km (0.09 R)
• M14: 9,079,693 km (0.119 R)
• M15: 9,958,132 km (0.111 R)
• M16: 10,479,331 km (0.12 R)
• M17: 13,950,600 km (0.065 R)
• M18: 14,706,667 km (0.027 R)
• M19: 16,411,186 km (0.09 R)
• M20: 18,965,569 km (0.067 R)
• M21: 21,047,972 km (0.053 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.8

Radius: 10.3

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 5.3 AU - 5.64 AU

Year: 8392 Days

Day: 10.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 60,512,239 km

• M1: 130,599 km (0.111 R)
• M2: 509,082 km (0.072 R)
• M3: 851,960 km (0.105 R)
• M4: 1,288,486 km (0.118 R)
• M5: 5,791,083 km (0.059 R)
• M6: 6,146,977 km (0.115 R)
• M7: 6,690,615 km (0.066 R)
• M8: 8,231,324 km (0.073 R)
• M9: 10,797,077 km (0.085 R)
• M10: 14,492,892 km (0.115 R)
• M11: 17,512,525 km (0.113 R)
• M12: 19,816,781 km (0.097 R)
• M13: 20,256,449 km (0.118 R)
• M14: 21,155,383 km (0.059 R)
• M15: 21,924,615 km (0.05 R)
• M16: 24,260,885 km (0.119 R)
• M17: 24,764,282 km (0.048 R)
• M18: 25,274,560 km (0.032 R)
• M19: 30,187,803 km (0.079 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 553.4

Radius: 6.3

Gravity: 13.94 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 5.03 AU - 8.23 AU

Year: 11199 Days

Day: 17.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 60,512,239 km

• M1: 79,586 km (0.109 R)
• M2: 536,308 km (0.109 R)
• M3: 820,395 km (0.069 R)
• M4: 1,350,270 km (0.093 R)
• M5: 1,566,439 km (0.056 R)
• M6: 2,069,238 km (0.036 R)
• M7: 2,695,006 km (0.12 R)
• M8: 3,464,238 km (0.052 R)
• M9: 4,635,739 km (0.094 R)
• M10: 5,872,764 km (0.103 R)
• M11: 8,932,938 km (0.099 R)
• M12: 10,305,498 km (0.059 R)
• M13: 16,353,590 km (0.103 R)
• M14: 19,713,708 km (0.111 R)
• M15: 22,021,555 km (0.063 R)
• M16: 22,625,481 km (0.096 R)
• M17: 26,871,817 km (0.107 R)
• M18: 28,872,987 km (0.116 R)
• M19: 30,225,801 km (0.073 R)
• M20: 30,650,360 km (0.074 R)
• M21: 35,001,115 km (0.063 R)
• M22: 41,418,265 km (0.077 R)
• M23: 41,942,157 km (0.119 R)
• M24: 45,178,407 km (0.071 R)
• M25: 45,733,415 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 550.1

Radius: 3.6

Gravity: 42.45 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 6.35 AU - 10.35 AU

Year: 15828 Days

Day: 17.3 Hours

Environment

Temp: -237 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 60,512,239 km

• M1: 44,730 km (0.072 R)
• M2: 604,824 km (0.095 R)
• M3: 1,329,925 km (0.051 R)
• M4: 2,007,603 km (0.108 R)
• M5: 3,362,811 km (0.111 R)
• M6: 4,002,341 km (0.101 R)
• M7: 4,886,016 km (0.1 R)
• M8: 5,125,672 km (0.107 R)
• M9: 8,018,745 km (0.108 R)
• M10: 9,046,931 km (0.088 R)
• M11: 9,304,240 km (0.049 R)
• M12: 12,026,771 km (0.068 R)
• M13: 12,212,572 km (0.054 R)
• M14: 12,717,764 km (0.032 R)
• M15: 12,846,268 km (0.08 R)
• M16: 13,434,936 km (0.108 R)
• M17: 14,110,071 km (0.077 R)
• M18: 18,476,534 km (0.095 R)
• M19: 21,232,725 km (0.117 R)
• M20: 21,778,308 km (0.117 R)
• M21: 22,147,217 km (0.097 R)
• M22: 24,448,481 km (0.114 R)
• M23: 24,746,779 km (0.087 R)
• M24: 25,656,633 km (0.1 R)
• M25: 26,068,027 km (0.088 R)
• M26: 28,082,662 km (0.111 R)
• M27: 32,298,779 km (0.046 R)
• M28: 34,744,405 km (0.093 R)
• M29: 38,237,814 km (0.114 R)
• M30: 39,044,595 km (0.084 R)
• M31: 39,725,565 km (0.059 R)
• M32: 42,242,848 km (0.086 R)
• M33: 45,611,344 km (0.097 R)
• M34: 47,130,061 km (0.088 R)
• M35: 51,724,511 km (0.115 R)
• M36: 59,251,229 km (0.101 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 308 - 11,283 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit