🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.62 AU - 0.66 AU

Year: 184 Days

Day: 15.7 Hours

Environment

Temp: 139 °C

Axial Tilt: 47.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 97,006,982 km

• M1: 14,511 km (0.1 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.82 AU - 1.16 AU

Year: 355 Days

Day: 26.1 Hours

Environment

Temp: 109 °C

Axial Tilt: 17.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 97,006,982 km

• M1: 99,483 km (0.036 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.01 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.85

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.84 AU - 1.18 AU

Year: 365 Days

Day: 35.2 Hours

Environment

Temp: 48 °C

Axial Tilt: 10.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.28 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.82

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 1.17 AU - 1.39 AU

Year: 521 Days

Day: 26.4 Hours

Environment

Temp: -1 °C

Axial Tilt: 12.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.96 AU - 4.14 AU

Year: 2933 Days

Day: 18.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 32 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 97,006,982 km

• M1: 2,671,968 km (0.032 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 452.6

Radius: 13.2

Gravity: 2.6 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 9.59 AU - 10.35 AU

Year: 11330 Days

Day: 8.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 97,006,982 km

• M1: 164,707 km (0.041 R)
• M2: 632,500 km (0.116 R)
• M3: 2,135,809 km (0.111 R)
• M4: 2,866,445 km (0.09 R)
• M5: 4,827,822 km (0.065 R)
• M6: 8,361,175 km (0.064 R)
• M7: 9,638,890 km (0.089 R)
• M8: 12,351,399 km (0.025 R)
• M9: 15,937,708 km (0.027 R)
• M10: 17,391,800 km (0.115 R)
• M11: 21,126,211 km (0.082 R)
• M12: 25,548,923 km (0.095 R)
• M13: 26,958,733 km (0.106 R)
• M14: 27,440,139 km (0.028 R)
• M15: 36,527,162 km (0.085 R)
• M16: 36,998,396 km (0.099 R)
• M17: 38,073,406 km (0.109 R)
• M18: 39,662,883 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 533.1

Radius: 5.9

Gravity: 15.31 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 12.4 AU - 19.76 AU

Year: 23206 Days

Day: 17.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 88.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 97,006,982 km

• M1: 73,453 km (0.089 R)
• M2: 619,784 km (0.087 R)
• M3: 819,497 km (0.092 R)
• M4: 1,088,175 km (0.115 R)
• M5: 1,510,191 km (0.064 R)
• M6: 1,936,993 km (0.095 R)
• M7: 2,486,616 km (0.073 R)
• M8: 2,675,109 km (0.114 R)
• M9: 2,898,758 km (0.066 R)
• M10: 4,867,915 km (0.035 R)
• M11: 5,278,710 km (0.083 R)
• M12: 6,000,221 km (0.096 R)
• M13: 6,605,494 km (0.113 R)
• M14: 8,505,686 km (0.093 R)
• M15: 9,156,736 km (0.059 R)
• M16: 9,494,528 km (0.113 R)
• M17: 12,366,358 km (0.076 R)
• M18: 12,571,607 km (0.105 R)
• M19: 13,343,831 km (0.093 R)
• M20: 13,559,850 km (0.074 R)
• M21: 14,371,718 km (0.072 R)
• M22: 23,923,991 km (0.106 R)
• M23: 24,672,728 km (0.103 R)
• M24: 27,940,993 km (0.083 R)
• M25: 31,869,882 km (0.104 R)
• M26: 34,774,773 km (0.082 R)
• M27: 36,994,955 km (0.049 R)
• M28: 37,851,403 km (0.109 R)
• M29: 43,584,592 km (0.1 R)
• M30: 50,216,864 km (0.093 R)
• M31: 51,442,669 km (0.109 R)
• M32: 52,152,062 km (0.071 R)
• M33: 54,870,255 km (0.104 R)
• M34: 56,545,602 km (0.113 R)
• M35: 60,390,416 km (0.044 R)
• M36: 62,176,017 km (0.113 R)
• M37: 63,385,665 km (0.118 R)
• M38: 70,538,837 km (0.108 R)
• M39: 75,899,676 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 585.8

Radius: 3.8

Gravity: 40.57 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 16.55 AU - 22.57 AU

Year: 31133 Days

Day: 23.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 97,006,982 km

• M1: 48,171 km (0.096 R)
• M2: 245,939 km (0.084 R)
• M3: 1,108,071 km (0.084 R)
• M4: 3,284,421 km (0.103 R)
• M5: 4,685,106 km (0.074 R)
• M6: 6,114,065 km (0.116 R)
• M7: 12,240,098 km (0.1 R)
• M8: 14,811,685 km (0.092 R)
• M9: 16,893,190 km (0.108 R)
• M10: 22,272,430 km (0.032 R)
• M11: 24,291,702 km (0.099 R)
• M12: 30,266,342 km (0.094 R)
• M13: 30,534,571 km (0.027 R)
• M14: 31,761,124 km (0.106 R)
• M15: 31,899,352 km (0.051 R)
• M16: 33,020,140 km (0.11 R)
• M17: 36,691,571 km (0.044 R)
• M18: 51,385,073 km (0.039 R)
• M19: 57,310,645 km (0.069 R)
• M20: 61,719,145 km (0.116 R)
• M21: 64,336,808 km (0.091 R)
• M22: 67,027,775 km (0.118 R)
• M23: 70,260,734 km (0.084 R)
• M24: 73,354,418 km (0.102 R)
• M25: 91,584,564 km (0.116 R)
• M26: 94,412,563 km (0.08 R)

Kuiper Belt

Range: 30.5 - 47.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 477 - 10,562 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit