🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.71 AU - 1.01 AU

Year: 290 Days

Day: 30.7 Hours

Environment

Temp: 86 °C

Axial Tilt: 9.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1.07 AU - 1.21 AU

Year: 442 Days

Day: 24.7 Hours

Environment

Temp: 8 °C

Axial Tilt: 38 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.18 AU - 1.28 AU

Year: 496 Days

Day: 38.8 Hours

Environment

Temp: 18 °C

Axial Tilt: 39.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.2

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.63 AU - 1.65 AU

Year: 763 Days

Day: 46 Hours

Environment

Temp: -49 °C

Axial Tilt: 42.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 4.22 AU - 4.4 AU

Year: 3252 Days

Day: 25.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 10.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 8.68 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Ice Giant

Semi-Major Axis: 13.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 393.7

Radius: 7.2

Gravity: 7.59 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 12.2 AU - 13.9 AU

Year: 17133 Days

Day: 24.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 74,428,709 km

• M1: 89,759 km (0.069 R)
• M2: 688,001 km (0.049 R)
• M3: 1,394,551 km (0.057 R)
• M4: 1,819,858 km (0.101 R)
• M5: 2,348,687 km (0.055 R)
• M6: 2,638,458 km (0.075 R)
• M7: 2,882,901 km (0.036 R)
• M8: 3,215,756 km (0.103 R)
• M9: 3,790,810 km (0.108 R)
• M10: 4,650,998 km (0.032 R)
• M11: 4,909,802 km (0.102 R)
• M12: 5,144,072 km (0.056 R)
• M13: 6,234,192 km (0.12 R)
• M14: 6,916,358 km (0.057 R)
• M15: 7,602,713 km (0.034 R)
• M16: 8,240,000 km (0.12 R)
• M17: 8,619,680 km (0.086 R)
• M18: 10,420,090 km (0.119 R)
• M19: 12,212,123 km (0.099 R)
• M20: 12,581,331 km (0.091 R)
• M21: 13,406,812 km (0.058 R)
• M22: 14,335,665 km (0.087 R)
• M23: 19,547,804 km (0.051 R)
• M24: 24,511,910 km (0.025 R)
• M25: 24,902,660 km (0.103 R)
• M26: 30,032,371 km (0.041 R)
• M27: 30,479,968 km (0.053 R)
• M28: 32,548,607 km (0.083 R)
• M29: 33,139,519 km (0.103 R)
• M30: 37,606,810 km (0.102 R)
• M31: 38,126,663 km (0.104 R)
• M32: 40,525,465 km (0.115 R)
• M33: 49,868,600 km (0.086 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 567.3

Radius: 6.6

Gravity: 13.02 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 13.14 AU - 17 AU

Year: 21262 Days

Day: 21.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 74,428,709 km

• M1: 83,775 km (0.097 R)
• M2: 641,924 km (0.078 R)
• M3: 940,223 km (0.114 R)
• M4: 1,271,881 km (0.093 R)
• M5: 1,696,739 km (0.113 R)
• M6: 1,990,699 km (0.055 R)
• M7: 2,753,947 km (0.054 R)
• M8: 6,244,066 km (0.052 R)
• M9: 7,224,680 km (0.034 R)
• M10: 7,654,175 km (0.109 R)
• M11: 7,999,746 km (0.088 R)
• M12: 9,656,991 km (0.085 R)
• M13: 11,466,826 km (0.119 R)
• M14: 11,919,510 km (0.093 R)
• M15: 12,384,161 km (0.103 R)
• M16: 14,364,088 km (0.071 R)
• M17: 17,544,988 km (0.119 R)
• M18: 18,939,090 km (0.083 R)
• M19: 20,218,152 km (0.104 R)
• M20: 22,543,053 km (0.093 R)
• M21: 23,769,755 km (0.088 R)
• M22: 24,188,480 km (0.118 R)
• M23: 25,365,067 km (0.105 R)
• M24: 26,133,402 km (0.111 R)
• M25: 28,180,200 km (0.102 R)
• M26: 29,242,494 km (0.1 R)
• M27: 30,331,417 km (0.116 R)
• M28: 33,106,458 km (0.087 R)
• M29: 34,023,792 km (0.086 R)
• M30: 37,157,119 km (0.105 R)
• M31: 39,446,715 km (0.097 R)
• M32: 46,713,880 km (0.06 R)
• M33: 49,888,496 km (0.026 R)
• M34: 57,223,130 km (0.116 R)
• M35: 57,598,172 km (0.082 R)
• M36: 60,076,411 km (0.12 R)
• M37: 62,426,294 km (0.063 R)
• M38: 65,040,367 km (0.109 R)

Kuiper Belt

Range: 30.2 - 45.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 261 - 14,883 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit