🌌 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: 3.42

Radius: 1.64

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.56 AU - 0.7 AU

Year: 323 Days

Day: 47.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 28.9 °

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: 682.5

Radius: 11.1

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.78 AU - 0.82 AU

Year: 462 Days

Day: 9.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 145.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 72,741,587 km

• M1: 138,079 km (0.094 R)
• M2: 503,846 km (0.086 R)
• M3: 860,038 km (0.095 R)
• M4: 1,230,742 km (0.108 R)
• M5: 2,117,707 km (0.073 R)
• M6: 2,521,023 km (0.092 R)
• M7: 2,953,960 km (0.039 R)
• M8: 3,388,242 km (0.114 R)
• M9: 3,838,831 km (0.109 R)
• M10: 4,357,636 km (0.11 R)
• M11: 4,769,479 km (0.114 R)

Asteroid Belt

Center: 1.62 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 553.2

Radius: 12.2

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 1.88 AU - 3 AU

Year: 2461 Days

Day: 7.6 Hours

Environment

Temp: -189 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 72,741,587 km

• M1: 152,141 km (0.109 R)
• M2: 840,740 km (0.061 R)
• M3: 1,448,407 km (0.064 R)
• M4: 1,932,954 km (0.079 R)
• M5: 2,337,018 km (0.032 R)
• M6: 2,933,913 km (0.076 R)
• M7: 3,793,802 km (0.056 R)
• M8: 4,538,500 km (0.09 R)
• M9: 5,496,076 km (0.107 R)
• M10: 8,178,216 km (0.061 R)
• M11: 9,015,665 km (0.12 R)
• M12: 9,628,418 km (0.12 R)
• M13: 12,034,401 km (0.088 R)
• M14: 14,723,871 km (0.081 R)
• M15: 15,719,295 km (0.076 R)
• M16: 16,407,446 km (0.044 R)
• M17: 17,013,167 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.2

Radius: 13.1

Gravity: 4.9 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 2.48 AU - 2.56 AU

Year: 2583 Days

Day: 12.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 72,741,587 km

• M1: 163,062 km (0.043 R)
• M2: 1,175,540 km (0.117 R)
• M3: 1,910,514 km (0.06 R)
• M4: 2,418,848 km (0.09 R)
• M5: 2,919,103 km (0.099 R)
• M6: 3,599,474 km (0.096 R)
• M7: 4,130,846 km (0.035 R)
• M8: 5,501,761 km (0.066 R)
• M9: 6,543,710 km (0.102 R)
• M10: 7,126,992 km (0.096 R)
• M11: 8,946,850 km (0.042 R)
• M12: 9,483,009 km (0.089 R)
• M13: 10,659,447 km (0.073 R)
• M14: 11,761,235 km (0.067 R)
• M15: 12,361,870 km (0.049 R)
• M16: 13,485,201 km (0.037 R)
• M17: 15,676,959 km (0.076 R)
• M18: 18,609,377 km (0.104 R)
• M19: 20,510,167 km (0.033 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.6

Radius: 11.1

Gravity: 5.76 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 3.7 AU - 4.38 AU

Year: 5243 Days

Day: 11.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 72,741,587 km

• M1: 138,079 km (0.119 R)
• M2: 735,722 km (0.089 R)
• M3: 1,246,001 km (0.113 R)
• M4: 1,728,454 km (0.104 R)
• M5: 2,286,155 km (0.118 R)
• M6: 3,356,378 km (0.044 R)
• M7: 4,552,712 km (0.088 R)
• M8: 5,333,314 km (0.107 R)
• M9: 5,681,578 km (0.095 R)
• M10: 6,200,832 km (0.102 R)
• M11: 6,685,230 km (0.077 R)
• M12: 7,125,347 km (0.107 R)
• M13: 8,139,321 km (0.107 R)
• M14: 11,186,630 km (0.079 R)
• M15: 14,809,740 km (0.05 R)
• M16: 15,210,364 km (0.084 R)
• M17: 17,704,160 km (0.092 R)
• M18: 20,038,934 km (0.117 R)
• M19: 21,680,771 km (0.03 R)
• M20: 23,179,741 km (0.085 R)
• M21: 24,111,586 km (0.114 R)
• M22: 24,826,814 km (0.097 R)
• M23: 25,802,342 km (0.054 R)
• M24: 28,705,139 km (0.086 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 475.4

Radius: 5.7

Gravity: 14.63 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 10.35 AU - 10.95 AU

Year: 22441 Days

Day: 18.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 72,741,587 km

• M1: 71,209 km (0.103 R)
• M2: 546,032 km (0.091 R)
• M3: 834,158 km (0.068 R)
• M4: 1,220,120 km (0.106 R)
• M5: 2,033,035 km (0.106 R)
• M6: 2,474,498 km (0.106 R)
• M7: 4,315,599 km (0.114 R)
• M8: 4,970,240 km (0.112 R)
• M9: 9,319,199 km (0.079 R)
• M10: 11,450,520 km (0.1 R)
• M11: 11,705,734 km (0.038 R)
• M12: 12,293,803 km (0.092 R)
• M13: 14,249,796 km (0.091 R)
• M14: 15,071,985 km (0.059 R)
• M15: 16,484,788 km (0.041 R)
• M16: 18,854,418 km (0.091 R)
• M17: 24,890,243 km (0.09 R)
• M18: 38,834,261 km (0.119 R)
• M19: 56,290,388 km (0.12 R)
• M20: 59,662,772 km (0.115 R)
• M21: 61,203,780 km (0.115 R)
• M22: 62,573,947 km (0.114 R)
• M23: 72,089,568 km (0.09 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 294 - 13,586 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit