🌌 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: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.48 AU - 0.58 AU

Year: 249 Days

Day: 13.3 Hours

Environment

Temp: -121 °C

Axial Tilt: 38.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.41

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.53 AU - 0.67 AU

Year: 300 Days

Day: 32.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 10.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,734,295 km

• M1: 583,731 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.6

Radius: 14.8

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.59 AU - 0.81 AU

Year: 378 Days

Day: 8.1 Hours

Environment

Temp: -141 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 43,734,295 km

• M1: 185,501 km (0.059 R)
• M2: 659,278 km (0.081 R)
• M3: 1,152,053 km (0.065 R)
• M4: 1,741,768 km (0.067 R)
• M5: 2,356,914 km (0.062 R)
• M6: 2,817,975 km (0.075 R)
• M7: 3,298,483 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 650.8

Radius: 12.6

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.89 AU - 0.93 AU

Year: 561 Days

Day: 11.5 Hours

Environment

Temp: -163 °C

Axial Tilt: 171.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 43,734,295 km

• M1: 156,779 km (0.079 R)
• M2: 759,060 km (0.065 R)
• M3: 1,563,148 km (0.056 R)
• M4: 2,203,427 km (0.114 R)
• M5: 4,357,487 km (0.057 R)
• M6: 5,172,646 km (0.115 R)
• M7: 5,652,107 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935.6

Radius: 9.4

Gravity: 10.59 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.4 AU - 1.74 AU

Year: 1270 Days

Day: 11.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 43,734,295 km

• M1: 117,734 km (0.063 R)
• M2: 412,441 km (0.089 R)
• M3: 1,198,429 km (0.051 R)
• M4: 1,500,018 km (0.045 R)
• M5: 1,832,574 km (0.051 R)
• M6: 2,345,395 km (0.096 R)
• M7: 3,052,245 km (0.055 R)
• M8: 3,775,252 km (0.115 R)
• M9: 4,705,751 km (0.093 R)
• M10: 5,172,346 km (0.087 R)
• M11: 5,515,075 km (0.064 R)
• M12: 6,610,281 km (0.043 R)
• M13: 7,408,236 km (0.118 R)
• M14: 7,844,613 km (0.07 R)
• M15: 11,146,089 km (0.105 R)
• M16: 12,087,957 km (0.106 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 170.1

Radius: 4.9

Gravity: 7.08 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 6.04 AU - 10 AU

Year: 14665 Days

Day: 19.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 43,734,295 km

• M1: 60,886 km (0.117 R)
• M2: 405,261 km (0.085 R)
• M3: 689,796 km (0.101 R)
• M4: 1,007,841 km (0.108 R)
• M5: 1,995,935 km (0.119 R)
• M6: 2,346,443 km (0.038 R)
• M7: 2,737,043 km (0.118 R)
• M8: 2,917,158 km (0.102 R)
• M9: 3,126,595 km (0.073 R)
• M10: 3,889,844 km (0.099 R)
• M11: 4,143,861 km (0.069 R)
• M12: 4,518,005 km (0.096 R)
• M13: 5,302,945 km (0.119 R)
• M14: 5,743,810 km (0.092 R)
• M15: 13,550,725 km (0.109 R)
• M16: 13,840,645 km (0.093 R)
• M17: 15,041,767 km (0.073 R)
• M18: 16,180,655 km (0.079 R)
• M19: 20,015,298 km (0.1 R)
• M20: 22,503,708 km (0.114 R)
• M21: 22,747,104 km (0.109 R)
• M22: 26,792,530 km (0.105 R)
• M23: 27,249,103 km (0.114 R)
• M24: 30,891,063 km (0.08 R)
• M25: 33,456,068 km (0.037 R)
• M26: 38,193,982 km (0.078 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 191.5

Radius: 3.7

Gravity: 13.99 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 7.82 AU - 9.52 AU

Year: 16483 Days

Day: 24.3 Hours

Environment

Temp: -236 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 43,734,295 km

• M1: 46,226 km (0.109 R)
• M2: 165,904 km (0.1 R)
• M3: 385,065 km (0.097 R)
• M4: 517,609 km (0.108 R)
• M5: 728,691 km (0.119 R)
• M6: 1,477,578 km (0.118 R)
• M7: 2,033,783 km (0.111 R)
• M8: 3,742,191 km (0.116 R)
• M9: 3,869,947 km (0.062 R)
• M10: 6,331,730 km (0.102 R)
• M11: 7,677,363 km (0.084 R)
• M12: 10,407,823 km (0.119 R)
• M13: 11,232,257 km (0.107 R)
• M14: 12,266,726 km (0.066 R)
• M15: 13,303,888 km (0.039 R)
• M16: 13,602,037 km (0.11 R)
• M17: 16,488,827 km (0.098 R)
• M18: 18,038,212 km (0.055 R)
• M19: 20,619,374 km (0.098 R)
• M20: 21,018,501 km (0.057 R)
• M21: 22,414,399 km (0.108 R)
• M22: 22,751,592 km (0.114 R)
• M23: 23,609,386 km (0.113 R)
• M24: 30,431,498 km (0.085 R)
• M25: 35,300,460 km (0.081 R)
• M26: 37,740,252 km (0.112 R)
• M27: 42,694,185 km (0.114 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: 503 - 12,220 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit