🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.46

Radius: 1.16

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.46 AU - 0.66 AU

Year: 271 Days

Day: 26 Hours

Environment

Temp: -125 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,994,972 km

• M1: 80,633 km (0.052 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.43 AU - 0.71 AU

Year: 278 Days

Day: 46.4 Hours

Environment

Temp: -118 °C

Axial Tilt: 5.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.4

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.55 AU - 0.73 AU

Year: 331 Days

Day: 20 Hours

Environment

Temp: -128 °C

Axial Tilt: 20 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261.7

Radius: 15

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.82 AU - 1.2 AU

Year: 655 Days

Day: 9.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,994,972 km

• M1: 186,549 km (0.111 R)
• M2: 684,709 km (0.074 R)
• M3: 1,209,798 km (0.072 R)
• M4: 1,787,096 km (0.111 R)
• M5: 2,304,705 km (0.051 R)
• M6: 2,801,071 km (0.115 R)
• M7: 3,473,513 km (0.103 R)
• M8: 4,626,763 km (0.098 R)
• M9: 5,620,990 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.4

Radius: 13.8

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.48 AU - 1.76 AU

Year: 1331 Days

Day: 10.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,994,972 km

• M1: 172,636 km (0.107 R)
• M2: 628,909 km (0.091 R)
• M3: 1,145,321 km (0.117 R)
• M4: 1,710,652 km (0.117 R)
• M5: 2,449,964 km (0.12 R)
• M6: 2,945,133 km (0.119 R)
• M7: 3,450,624 km (0.07 R)
• M8: 4,535,957 km (0.114 R)
• M9: 5,578,654 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 690.2

Radius: 10

Gravity: 6.9 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.16 AU - 2.42 AU

Year: 2238 Days

Day: 8.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,994,972 km

• M1: 124,465 km (0.107 R)
• M2: 486,193 km (0.098 R)
• M3: 891,454 km (0.115 R)
• M4: 1,474,437 km (0.066 R)
• M5: 2,787,308 km (0.097 R)
• M6: 3,520,337 km (0.061 R)
• M7: 4,691,539 km (0.106 R)
• M8: 6,853,976 km (0.044 R)
• M9: 7,193,264 km (0.108 R)
• M10: 7,783,577 km (0.08 R)
• M11: 8,566,722 km (0.09 R)
• M12: 9,679,730 km (0.074 R)
• M13: 10,216,487 km (0.096 R)
• M14: 11,349,392 km (0.092 R)
• M15: 12,191,030 km (0.059 R)
• M16: 12,817,097 km (0.096 R)
• M17: 14,592,076 km (0.081 R)
• M18: 15,298,028 km (0.111 R)
• M19: 15,635,221 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.8

Radius: 11.1

Gravity: 8.11 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.8 AU - 2.86 AU

Year: 2296 Days

Day: 9.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,994,972 km

• M1: 138,079 km (0.115 R)
• M2: 540,946 km (0.037 R)
• M3: 991,235 km (0.119 R)
• M4: 1,348,176 km (0.049 R)
• M5: 1,703,172 km (0.114 R)
• M6: 2,147,328 km (0.027 R)
• M7: 2,593,429 km (0.047 R)
• M8: 3,017,539 km (0.075 R)
• M9: 3,415,170 km (0.089 R)
• M10: 4,047,370 km (0.059 R)
• M11: 5,056,857 km (0.051 R)
• M12: 10,043,851 km (0.064 R)
• M13: 11,341,164 km (0.12 R)
• M14: 12,570,859 km (0.085 R)
• M15: 14,603,146 km (0.107 R)
• M16: 15,545,164 km (0.092 R)
• M17: 18,844,395 km (0.059 R)
• M18: 19,309,046 km (0.045 R)
• M19: 20,020,533 km (0.092 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.6

Radius: 14.2

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 2.02 AU - 3.24 AU

Year: 2754 Days

Day: 10.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,994,972 km

• M1: 176,675 km (0.104 R)
• M2: 754,721 km (0.086 R)
• M3: 1,276,070 km (0.051 R)
• M4: 4,098,383 km (0.088 R)
• M5: 5,415,443 km (0.109 R)
• M6: 5,878,897 km (0.11 R)
• M7: 6,448,715 km (0.104 R)
• M8: 8,447,493 km (0.066 R)
• M9: 9,729,846 km (0.114 R)
• M10: 10,566,995 km (0.086 R)
• M11: 11,932,525 km (0.084 R)
• M12: 13,500,909 km (0.114 R)
• M13: 15,107,440 km (0.044 R)
• M14: 16,230,471 km (0.06 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 978.5

Radius: 13.8

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 3.77 AU - 5.61 AU

Year: 6558 Days

Day: 11.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 52,994,972 km

• M1: 171,888 km (0.066 R)
• M2: 621,579 km (0.099 R)
• M3: 1,234,631 km (0.107 R)
• M4: 1,766,452 km (0.102 R)
• M5: 2,469,113 km (0.051 R)
• M6: 3,177,908 km (0.09 R)
• M7: 3,651,684 km (0.076 R)
• M8: 4,277,751 km (0.101 R)
• M9: 4,829,468 km (0.073 R)
• M10: 5,459,724 km (0.106 R)
• M11: 6,315,723 km (0.106 R)
• M12: 11,110,484 km (0.116 R)
• M13: 11,731,465 km (0.088 R)
• M14: 13,156,684 km (0.056 R)
• M15: 14,269,094 km (0.113 R)
• M16: 14,755,885 km (0.104 R)
• M17: 15,443,287 km (0.046 R)
• M18: 16,547,619 km (0.115 R)
• M19: 20,025,769 km (0.07 R)
• M20: 20,713,920 km (0.096 R)
• M21: 21,976,077 km (0.102 R)
• M22: 25,090,555 km (0.083 R)
• M23: 26,160,928 km (0.074 R)
• M24: 27,076,018 km (0.037 R)
• M25: 28,297,335 km (0.102 R)
• M26: 32,704,339 km (0.088 R)
• M27: 33,232,419 km (0.077 R)
• M28: 34,523,149 km (0.118 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 175.3

Radius: 6.9

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 8.12 AU - 13.53 AU

Year: 22980 Days

Day: 22.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,994,972 km

• M1: 90,058 km (0.111 R)
• M2: 1,259,764 km (0.112 R)
• M3: 1,755,381 km (0.096 R)
• M4: 2,875,869 km (0.094 R)
• M5: 5,828,183 km (0.047 R)
• M6: 9,730,294 km (0.084 R)
• M7: 10,678,296 km (0.084 R)
• M8: 13,315,557 km (0.092 R)
• M9: 26,073,114 km (0.044 R)
• M10: 29,045,324 km (0.058 R)
• M11: 30,011,726 km (0.054 R)
• M12: 36,019,128 km (0.092 R)
• M13: 44,594,676 km (0.079 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 324 - 15,646 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit