🌌 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: 4.58

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.52 AU - 0.76 AU

Year: 336 Days

Day: 38 Hours

Environment

Temp: -137 °C

Axial Tilt: 35.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237.9

Radius: 12.1

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.61 AU - 0.77 AU

Year: 376 Days

Day: 13.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 71,150,374 km

• M1: 150,944 km (0.056 R)
• M2: 572,511 km (0.076 R)
• M3: 1,045,540 km (0.1 R)
• M4: 1,598,154 km (0.099 R)
• M5: 2,451,909 km (0.108 R)
• M6: 2,832,935 km (0.097 R)
• M7: 3,578,381 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 656.2

Radius: 13.7

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.8 AU - 1.26 AU

Year: 686 Days

Day: 6.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 110.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,150,374 km

• M1: 170,392 km (0.114 R)
• M2: 786,286 km (0.038 R)
• M3: 1,247,048 km (0.09 R)
• M4: 2,239,181 km (0.095 R)
• M5: 2,759,482 km (0.116 R)
• M6: 3,570,602 km (0.113 R)
• M7: 4,441,262 km (0.103 R)
• M8: 4,910,550 km (0.074 R)
• M9: 5,503,257 km (0.119 R)
• M10: 5,930,957 km (0.059 R)
• M11: 6,959,443 km (0.063 R)
• M12: 7,483,185 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 114.7

Radius: 14.4

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.84 AU - 1.28 AU

Year: 716 Days

Day: 14.9 Hours

Environment

Temp: -172 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 71,150,374 km

• M1: 179,069 km (0.118 R)
• M2: 672,143 km (0.091 R)
• M3: 1,909,617 km (0.104 R)
• M4: 2,361,402 km (0.054 R)
• M5: 3,050,749 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687.9

Radius: 13.8

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.1 AU - 1.62 AU

Year: 1040 Days

Day: 10.7 Hours

Environment

Temp: -173 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 71,150,374 km

• M1: 172,935 km (0.092 R)
• M2: 875,896 km (0.045 R)
• M3: 1,501,065 km (0.066 R)
• M4: 2,055,774 km (0.059 R)
• M5: 2,496,489 km (0.072 R)
• M6: 3,188,679 km (0.088 R)
• M7: 5,302,796 km (0.059 R)
• M8: 6,166,574 km (0.085 R)
• M9: 6,862,802 km (0.102 R)
• M10: 7,339,421 km (0.066 R)
• M11: 8,069,908 km (0.109 R)
• M12: 8,820,889 km (0.044 R)
• M13: 9,794,771 km (0.098 R)
• M14: 10,431,460 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 350.3

Radius: 13.6

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.29 AU - 1.85 AU

Year: 1291 Days

Day: 12 Hours

Environment

Temp: -184 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,150,374 km

• M1: 169,195 km (0.063 R)
• M2: 680,521 km (0.073 R)
• M3: 1,342,940 km (0.116 R)
• M4: 2,134,762 km (0.065 R)
• M5: 3,342,914 km (0.056 R)
• M6: 4,051,410 km (0.079 R)
• M7: 5,952,499 km (0.059 R)
• M8: 8,921,419 km (0.037 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 81

Radius: 9.6

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 3.4 AU - 3.62 AU

Year: 4314 Days

Day: 9.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 71,150,374 km

• M1: 119,379 km (0.078 R)
• M2: 772,075 km (0.12 R)
• M3: 1,141,282 km (0.103 R)
• M4: 3,185,986 km (0.114 R)
• M5: 5,405,420 km (0.04 R)
• M6: 6,292,236 km (0.088 R)
• M7: 9,695,588 km (0.102 R)
• M8: 10,553,681 km (0.099 R)
• M9: 11,106,296 km (0.082 R)
• M10: 13,312,715 km (0.094 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 718.7

Radius: 12.7

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 4.62 AU - 6.88 AU

Year: 9045 Days

Day: 8.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 71,150,374 km

• M1: 161,865 km (0.077 R)
• M2: 739,612 km (0.048 R)
• M3: 1,311,525 km (0.114 R)
• M4: 1,864,588 km (0.052 R)
• M5: 3,085,157 km (0.107 R)
• M6: 3,593,790 km (0.055 R)
• M7: 4,434,081 km (0.11 R)
• M8: 6,878,211 km (0.028 R)
• M9: 7,306,210 km (0.097 R)
• M10: 7,918,514 km (0.115 R)
• M11: 9,386,818 km (0.111 R)
• M12: 10,310,734 km (0.107 R)
• M13: 11,029,552 km (0.09 R)
• M14: 12,114,136 km (0.08 R)
• M15: 13,268,583 km (0.086 R)
• M16: 13,689,552 km (0.075 R)
• M17: 15,728,720 km (0.091 R)
• M18: 16,337,135 km (0.03 R)
• M19: 20,882,816 km (0.07 R)
• M20: 22,285,894 km (0.057 R)
• M21: 24,372,784 km (0.118 R)
• M22: 27,257,031 km (0.055 R)
• M23: 29,133,288 km (0.1 R)
• M24: 30,154,592 km (0.104 R)
• M25: 30,883,583 km (0.055 R)
• M26: 34,141,974 km (0.088 R)
• M27: 37,027,119 km (0.112 R)
• M28: 37,622,967 km (0.1 R)
• M29: 42,104,321 km (0.089 R)
• M30: 44,473,203 km (0.049 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 641

Radius: 4.7

Gravity: 29.02 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 8.22 AU - 10.44 AU

Year: 18695 Days

Day: 20 Hours

Environment

Temp: -219 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 71,150,374 km

• M1: 63,280 km (0.103 R)
• M2: 218,263 km (0.098 R)
• M3: 413,937 km (0.094 R)
• M4: 774,917 km (0.109 R)
• M5: 1,322,445 km (0.096 R)
• M6: 1,619,098 km (0.107 R)
• M7: 2,155,855 km (0.086 R)
• M8: 3,212,165 km (0.105 R)
• M9: 3,718,255 km (0.061 R)
• M10: 5,066,581 km (0.09 R)
• M11: 6,114,364 km (0.085 R)
• M12: 7,486,625 km (0.108 R)
• M13: 9,939,582 km (0.105 R)
• M14: 11,128,885 km (0.057 R)
• M15: 11,440,497 km (0.092 R)
• M16: 14,001,164 km (0.059 R)
• M17: 15,185,081 km (0.118 R)
• M18: 16,195,017 km (0.086 R)
• M19: 16,675,824 km (0.082 R)
• M20: 17,248,784 km (0.052 R)
• M21: 22,019,909 km (0.12 R)
• M22: 22,609,773 km (0.109 R)
• M23: 24,234,556 km (0.115 R)
• M24: 27,374,914 km (0.107 R)
• M25: 31,389,523 km (0.072 R)
• M26: 40,123,047 km (0.112 R)
• M27: 41,002,383 km (0.107 R)
• M28: 41,150,185 km (0.056 R)
• M29: 42,345,622 km (0.03 R)
• M30: 48,340,607 km (0.087 R)
• M31: 49,670,981 km (0.086 R)
• M32: 57,426,434 km (0.107 R)
• M33: 63,745,597 km (0.11 R)
• M34: 64,541,608 km (0.05 R)
• M35: 64,942,081 km (0.092 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 451 - 19,207 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit