🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.54 AU - 0.54 AU

Year: 252 Days

Day: 23 Hours

Environment

Temp: -126 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.3

Radius: 10.4

Gravity: 8.16 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.72 AU - 0.94 AU

Year: 481 Days

Day: 8.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,119,173 km

• M1: 129,402 km (0.107 R)
• M2: 466,596 km (0.105 R)
• M3: 1,080,695 km (0.047 R)
• M4: 1,422,377 km (0.083 R)
• M5: 2,155,257 km (0.112 R)
• M6: 2,729,264 km (0.068 R)
• M7: 3,123,155 km (0.1 R)
• M8: 3,567,760 km (0.061 R)
• M9: 4,111,249 km (0.072 R)
• M10: 4,709,042 km (0.118 R)
• M11: 5,312,819 km (0.094 R)
• M12: 6,420,142 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 167.5

Radius: 13.7

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.73 AU - 1.09 AU

Year: 552 Days

Day: 8.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 29,119,173 km

• M1: 170,392 km (0.101 R)
• M2: 701,614 km (0.069 R)
• M3: 1,761,365 km (0.051 R)
• M4: 2,472,254 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 300.9

Radius: 14.9

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.78 AU - 1.22 AU

Year: 636 Days

Day: 9.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,119,173 km

• M1: 185,352 km (0.083 R)
• M2: 657,483 km (0.085 R)
• M3: 1,270,385 km (0.038 R)
• M4: 2,642,347 km (0.081 R)
• M5: 3,204,835 km (0.077 R)
• M6: 3,709,728 km (0.103 R)
• M7: 4,200,259 km (0.107 R)
• M8: 5,079,596 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 515.9

Radius: 10.9

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 1.37 AU - 1.99 AU

Year: 1385 Days

Day: 14.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 29,119,173 km

• M1: 135,536 km (0.028 R)
• M2: 524,341 km (0.111 R)
• M3: 1,317,957 km (0.088 R)
• M4: 1,692,999 km (0.103 R)
• M5: 2,421,391 km (0.057 R)
• M6: 3,245,526 km (0.103 R)
• M7: 3,636,275 km (0.112 R)
• M8: 4,126,358 km (0.091 R)
• M9: 4,772,322 km (0.107 R)
• M10: 6,198,289 km (0.109 R)
• M11: 7,371,136 km (0.092 R)
• M12: 7,810,804 km (0.117 R)
• M13: 8,545,180 km (0.102 R)
• M14: 9,089,118 km (0.068 R)
• M15: 9,625,576 km (0.088 R)
• M16: 10,341,701 km (0.117 R)
• M17: 11,059,621 km (0.077 R)
• M18: 11,499,289 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.2

Radius: 8.8

Gravity: 11.37 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.86 AU - 2.02 AU

Year: 1718 Days

Day: 13.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 29,119,173 km

• M1: 109,506 km (0.093 R)
• M2: 397,182 km (0.04 R)
• M3: 700,118 km (0.068 R)
• M4: 994,078 km (0.057 R)
• M5: 1,286,093 km (0.077 R)
• M6: 2,145,084 km (0.108 R)
• M7: 2,424,084 km (0.082 R)
• M8: 2,873,625 km (0.072 R)
• M9: 3,182,096 km (0.042 R)
• M10: 3,495,803 km (0.104 R)
• M11: 4,033,308 km (0.101 R)
• M12: 5,432,946 km (0.074 R)
• M13: 5,786,146 km (0.086 R)
• M14: 6,383,192 km (0.028 R)
• M15: 7,583,864 km (0.105 R)
• M16: 7,906,247 km (0.114 R)
• M17: 8,896,585 km (0.11 R)
• M18: 9,794,472 km (0.032 R)
• M19: 10,141,988 km (0.069 R)
• M20: 10,533,784 km (0.107 R)
• M21: 11,272,050 km (0.115 R)
• M22: 11,887,047 km (0.108 R)
• M23: 14,305,296 km (0.038 R)
• M24: 14,617,806 km (0.083 R)
• M25: 15,302,815 km (0.038 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 252.2

Radius: 8

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 7.23 AU - 7.83 AU

Year: 13138 Days

Day: 22.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 29,119,173 km

• M1: 100,979 km (0.115 R)
• M2: 525,388 km (0.078 R)
• M3: 1,576,911 km (0.079 R)
• M4: 2,232,898 km (0.079 R)
• M5: 2,871,082 km (0.103 R)
• M6: 4,877,040 km (0.106 R)
• M7: 11,652,029 km (0.048 R)
• M8: 13,083,082 km (0.071 R)
• M9: 21,866,422 km (0.076 R)
• M10: 35,793,684 km (0.073 R)
• M11: 39,988,857 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 68.9

Radius: 7.8

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 6.49 AU - 9.91 AU

Year: 14930 Days

Day: 19.5 Hours

Environment

Temp: -237 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,119,173 km

• M1: 98,435 km (0.093 R)
• M2: 347,067 km (0.11 R)
• M3: 888,462 km (0.074 R)
• M4: 1,639,742 km (0.117 R)
• M5: 2,024,957 km (0.115 R)
• M6: 2,812,739 km (0.053 R)
• M7: 3,681,454 km (0.105 R)
• M8: 4,466,843 km (0.03 R)
• M9: 5,967,010 km (0.115 R)
• M10: 7,148,534 km (0.086 R)
• M11: 7,633,830 km (0.119 R)
• M12: 8,864,871 km (0.106 R)
• M13: 10,705,373 km (0.115 R)
• M14: 12,145,851 km (0.058 R)
• M15: 18,109,570 km (0.112 R)
• M16: 21,537,456 km (0.098 R)
• M17: 23,365,991 km (0.103 R)
• M18: 27,832,684 km (0.096 R)
• M19: 28,599,971 km (0.118 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 329 - 11,641 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit