🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.58

Radius: 0.8

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.55 AU - 0.55 AU

Year: 268 Days

Day: 26.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 67,371,185 km

• M1: 187,895 km (0.06 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237.4

Radius: 14.2

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.77 AU - 0.89 AU

Year: 496 Days

Day: 11.2 Hours

Environment

Temp: -144 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 67,371,185 km

• M1: 176,825 km (0.119 R)
• M2: 1,426,864 km (0.102 R)
• M3: 1,869,225 km (0.074 R)
• M4: 2,738,389 km (0.098 R)
• M5: 3,556,540 km (0.114 R)
• M6: 4,225,990 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 961.8

Radius: 9.8

Gravity: 10.01 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.99 AU - 1.17 AU

Year: 736 Days

Day: 8.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 67,371,185 km

• M1: 122,072 km (0.118 R)
• M2: 438,471 km (0.098 R)
• M3: 787,034 km (0.095 R)
• M4: 1,250,638 km (0.075 R)
• M5: 2,482,427 km (0.06 R)
• M6: 2,822,014 km (0.099 R)
• M7: 3,273,351 km (0.04 R)
• M8: 3,581,223 km (0.111 R)
• M9: 3,954,769 km (0.055 R)
• M10: 4,288,672 km (0.037 R)
• M11: 4,710,538 km (0.106 R)
• M12: 5,657,941 km (0.113 R)
• M13: 6,124,686 km (0.062 R)
• M14: 6,929,373 km (0.105 R)
• M15: 7,778,341 km (0.083 R)
• M16: 8,253,614 km (0.113 R)
• M17: 8,828,070 km (0.077 R)
• M18: 9,345,379 km (0.027 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.8

Radius: 11

Gravity: 6.87 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.1 AU - 1.58 AU

Year: 1018 Days

Day: 12.4 Hours

Environment

Temp: -179 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 67,371,185 km

• M1: 136,882 km (0.057 R)
• M2: 507,735 km (0.111 R)
• M3: 1,194,539 km (0.108 R)
• M4: 2,307,098 km (0.096 R)
• M5: 3,090,991 km (0.113 R)
• M6: 3,568,059 km (0.072 R)
• M7: 4,652,494 km (0.086 R)
• M8: 5,261,357 km (0.032 R)
• M9: 5,773,580 km (0.101 R)
• M10: 6,273,836 km (0.111 R)
• M11: 7,537,489 km (0.035 R)
• M12: 8,793,662 km (0.106 R)
• M13: 9,755,876 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389.5

Radius: 8.1

Gravity: 5.94 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.81 AU - 2.87 AU

Year: 2348 Days

Day: 5.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 67,371,185 km

• M1: 102,475 km (0.06 R)
• M2: 380,128 km (0.094 R)
• M3: 696,079 km (0.084 R)
• M4: 1,581,249 km (0.092 R)
• M5: 2,335,971 km (0.096 R)
• M6: 2,695,305 km (0.114 R)
• M7: 3,945,045 km (0.092 R)
• M8: 4,926,407 km (0.109 R)
• M9: 6,184,675 km (0.115 R)
• M10: 6,928,326 km (0.076 R)
• M11: 8,409,196 km (0.116 R)
• M12: 10,437,144 km (0.096 R)
• M13: 12,571,008 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 866.2

Radius: 15

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 2.44 AU - 3.36 AU

Year: 3240 Days

Day: 13.8 Hours

Environment

Temp: -211 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 67,371,185 km

• M1: 190,139 km (0.113 R)
• M2: 680,222 km (0.114 R)
• M3: 1,299,856 km (0.084 R)
• M4: 2,009,997 km (0.105 R)
• M5: 2,641,898 km (0.091 R)
• M6: 3,657,518 km (0.111 R)
• M7: 4,245,438 km (0.071 R)
• M8: 5,069,124 km (0.118 R)
• M9: 7,225,876 km (0.07 R)
• M10: 7,985,235 km (0.072 R)
• M11: 10,879,804 km (0.068 R)
• M12: 12,149,441 km (0.059 R)
• M13: 12,891,148 km (0.105 R)
• M14: 14,261,614 km (0.097 R)
• M15: 15,512,102 km (0.113 R)
• M16: 17,291,569 km (0.089 R)
• M17: 21,653,394 km (0.102 R)
• M18: 22,262,856 km (0.115 R)
• M19: 23,516,037 km (0.118 R)
• M20: 24,450,126 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 316.1

Radius: 6.7

Gravity: 7.04 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 5.67 AU - 8.49 AU

Year: 12358 Days

Day: 15.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 67,371,185 km

• M1: 83,326 km (0.047 R)
• M2: 311,463 km (0.074 R)
• M3: 740,509 km (0.092 R)
• M4: 1,209,948 km (0.12 R)
• M5: 1,504,655 km (0.096 R)
• M6: 1,727,257 km (0.119 R)
• M7: 2,531,794 km (0.083 R)
• M8: 2,828,447 km (0.088 R)
• M9: 4,014,758 km (0.084 R)
• M10: 5,246,846 km (0.101 R)
• M11: 5,898,345 km (0.063 R)
• M12: 7,089,443 km (0.112 R)
• M13: 7,680,654 km (0.088 R)
• M14: 8,261,542 km (0.031 R)
• M15: 8,826,873 km (0.072 R)
• M16: 9,141,926 km (0.096 R)
• M17: 9,841,894 km (0.06 R)
• M18: 10,328,237 km (0.089 R)
• M19: 11,348,494 km (0.068 R)
• M20: 16,039,884 km (0.08 R)
• M21: 19,368,287 km (0.085 R)
• M22: 19,977,300 km (0.106 R)
• M23: 24,779,690 km (0.073 R)
• M24: 34,548,731 km (0.059 R)
• M25: 42,528,879 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 42.1

Radius: 4.8

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 5.48 AU - 8.72 AU

Year: 12411 Days

Day: 19.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 67,371,185 km

• M1: 61,485 km (0.071 R)
• M2: 258,655 km (0.069 R)
• M3: 630,405 km (0.056 R)
• M4: 908,358 km (0.096 R)
• M5: 1,572,274 km (0.087 R)
• M6: 2,031,689 km (0.079 R)
• M7: 2,484,073 km (0.071 R)
• M8: 3,105,353 km (0.07 R)
• M9: 4,421,215 km (0.055 R)
• M10: 4,908,007 km (0.034 R)
• M11: 5,226,800 km (0.104 R)
• M12: 7,693,519 km (0.08 R)
• M13: 9,736,877 km (0.115 R)
• M14: 11,088,942 km (0.051 R)
• M15: 13,676,387 km (0.081 R)
• M16: 13,868,471 km (0.068 R)
• M17: 19,576,377 km (0.097 R)
• M18: 20,690,134 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 455.5

Radius: 6.1

Gravity: 12.24 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 8.91 AU - 10.89 AU

Year: 20434 Days

Day: 17 Hours

Environment

Temp: -229 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 67,371,185 km

• M1: 81,980 km (0.103 R)
• M2: 1,601,146 km (0.064 R)
• M3: 4,254,863 km (0.119 R)
• M4: 6,755,092 km (0.115 R)
• M5: 8,742,649 km (0.084 R)
• M6: 15,052,089 km (0.113 R)
• M7: 16,983,098 km (0.086 R)
• M8: 24,571,001 km (0.07 R)
• M9: 24,880,968 km (0.099 R)
• M10: 25,403,663 km (0.037 R)
• M11: 25,720,661 km (0.092 R)
• M12: 32,133,922 km (0.107 R)
• M13: 55,436,782 km (0.064 R)
• M14: 59,058,098 km (0.083 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: 195 - 10,258 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit