🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.5 AU - 0.54 AU

Year: 131 Days

Day: 25.7 Hours

Environment

Temp: 238 °C

Axial Tilt: 42.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 116,878,708 km

• M1: 127,607 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.36

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.6 AU - 0.6 AU

Year: 163 Days

Day: 44.8 Hours

Environment

Temp: 245 °C

Axial Tilt: 46.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.6 AU - 1.82 AU

Year: 782 Days

Day: 46.3 Hours

Environment

Temp: -42 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.7

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.51 AU - 2.03 AU

Year: 824 Days

Day: 19.7 Hours

Environment

Temp: -34 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 116,878,708 km

• M1: 31,565 km (0.118 R)
• M2: 515,065 km (0.037 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 2.52 AU - 2.7 AU

Year: 1475 Days

Day: 17.6 Hours

Environment

Temp: -72 °C

Axial Tilt: 44.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 116,878,708 km

• M1: 2,267,006 km (0.049 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 2.48 AU - 3.8 AU

Year: 1947 Days

Day: 29.5 Hours

Environment

Temp: -103 °C

Axial Tilt: 0.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 116,878,708 km

• M1: 916,437 km (0.086 R)
• M2: 2,207,017 km (0.097 R)

Asteroid Belt

Center: 5.82 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 8.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.3

Radius: 8.8

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 7.85 AU - 9.15 AU

Year: 8670 Days

Day: 13.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 116,878,708 km

• M1: 109,506 km (0.112 R)
• M2: 526,585 km (0.076 R)
• M3: 840,441 km (0.106 R)
• M4: 1,165,517 km (0.056 R)
• M5: 1,563,148 km (0.117 R)
• M6: 2,008,052 km (0.044 R)
• M7: 2,283,761 km (0.106 R)
• M8: 3,287,712 km (0.108 R)
• M9: 7,045,910 km (0.101 R)
• M10: 10,274,531 km (0.08 R)
• M11: 11,600,716 km (0.104 R)
• M12: 14,059,208 km (0.097 R)
• M13: 15,690,124 km (0.049 R)
• M14: 16,493,016 km (0.063 R)
• M15: 17,504,297 km (0.045 R)
• M16: 20,650,191 km (0.094 R)
• M17: 21,266,385 km (0.049 R)
• M18: 24,992,119 km (0.069 R)
• M19: 25,379,279 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 673.7

Radius: 6.1

Gravity: 18.11 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 13.38 AU - 19.18 AU

Year: 22980 Days

Day: 17.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 116,878,708 km

• M1: 75,846 km (0.094 R)
• M2: 284,535 km (0.102 R)
• M3: 672,143 km (0.09 R)
• M4: 2,896,664 km (0.089 R)
• M5: 3,631,638 km (0.118 R)
• M6: 5,423,521 km (0.091 R)
• M7: 5,960,727 km (0.065 R)
• M8: 7,433,518 km (0.097 R)
• M9: 8,576,895 km (0.106 R)
• M10: 11,804,469 km (0.107 R)
• M11: 12,214,367 km (0.077 R)
• M12: 12,775,658 km (0.046 R)
• M13: 14,640,396 km (0.098 R)
• M14: 18,350,273 km (0.117 R)
• M15: 18,807,893 km (0.093 R)
• M16: 21,110,952 km (0.078 R)
• M17: 23,062,606 km (0.118 R)
• M18: 26,268,339 km (0.053 R)
• M19: 29,012,712 km (0.084 R)
• M20: 29,260,147 km (0.077 R)
• M21: 31,419,442 km (0.11 R)
• M22: 35,485,363 km (0.093 R)
• M23: 36,195,354 km (0.026 R)
• M24: 37,938,170 km (0.114 R)
• M25: 39,130,465 km (0.068 R)
• M26: 41,904,458 km (0.111 R)
• M27: 47,325,436 km (0.1 R)
• M28: 48,706,524 km (0.108 R)
• M29: 49,583,317 km (0.092 R)
• M30: 56,979,435 km (0.118 R)
• M31: 57,952,719 km (0.115 R)
• M32: 60,534,928 km (0.093 R)
• M33: 62,779,046 km (0.099 R)
• M34: 68,740,072 km (0.085 R)
• M35: 69,400,397 km (0.092 R)
• M36: 70,957,262 km (0.12 R)
• M37: 71,857,392 km (0.103 R)
• M38: 81,772,290 km (0.059 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 918.8

Radius: 5.7

Gravity: 28.28 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 19.62 AU - 21.72 AU

Year: 32877 Days

Day: 23 Hours

Environment

Temp: -200 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 116,878,708 km

• M1: 71,957 km (0.086 R)
• M2: 277,803 km (0.108 R)
• M3: 884,722 km (0.102 R)
• M4: 1,215,632 km (0.115 R)
• M5: 1,529,489 km (0.08 R)
• M6: 4,155,230 km (0.096 R)
• M7: 4,743,449 km (0.111 R)
• M8: 6,132,615 km (0.066 R)
• M9: 7,887,997 km (0.045 R)
• M10: 10,573,727 km (0.095 R)
• M11: 11,589,497 km (0.075 R)
• M12: 12,044,125 km (0.095 R)
• M13: 13,729,195 km (0.114 R)
• M14: 16,876,884 km (0.084 R)
• M15: 19,188,470 km (0.1 R)
• M16: 21,816,905 km (0.086 R)
• M17: 23,938,950 km (0.054 R)
• M18: 24,305,615 km (0.077 R)
• M19: 25,049,864 km (0.075 R)
• M20: 26,194,737 km (0.103 R)
• M21: 33,805,528 km (0.034 R)
• M22: 36,154,664 km (0.114 R)
• M23: 36,798,982 km (0.114 R)
• M24: 42,054,654 km (0.036 R)
• M25: 42,588,270 km (0.092 R)
• M26: 48,565,004 km (0.096 R)
• M27: 57,225,374 km (0.079 R)
• M28: 63,071,509 km (0.117 R)
• M29: 66,618,924 km (0.051 R)
• M30: 68,809,934 km (0.049 R)
• M31: 70,797,492 km (0.075 R)
• M32: 71,552,662 km (0.08 R)
• M33: 77,520,869 km (0.064 R)
• M34: 78,055,083 km (0.112 R)
• M35: 78,860,817 km (0.056 R)
• M36: 82,139,553 km (0.081 R)
• M37: 85,507,899 km (0.086 R)
• M38: 93,119,738 km (0.037 R)
• M39: 111,700,841 km (0.1 R)
• M40: 116,878,722 km (0.097 R)

Kuiper Belt

Range: 31.4 - 57.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 334 - 15,261 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit