🌌 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: 4.81

Radius: 1.87

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.53 AU - 0.59 AU

Year: 275 Days

Day: 33.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 33.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.6

Radius: 8.3

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.76 AU - 1 AU

Year: 542 Days

Day: 6 Hours

Environment

Temp: -155 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 43,514,737 km

• M1: 117,734 km (0.104 R)
• M2: 852,857 km (0.119 R)
• M3: 1,143,975 km (0.077 R)
• M4: 1,457,233 km (0.053 R)
• M5: 2,060,262 km (0.117 R)
• M6: 3,791,408 km (0.097 R)
• M7: 4,186,796 km (0.089 R)
• M8: 4,852,955 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.6

Radius: 13.5

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.87 AU - 1.39 AU

Year: 788 Days

Day: 5.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 43,514,737 km

• M1: 168,148 km (0.083 R)
• M2: 596,746 km (0.116 R)
• M3: 1,311,824 km (0.117 R)
• M4: 2,235,441 km (0.119 R)
• M5: 2,891,428 km (0.115 R)
• M6: 3,381,211 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.9

Radius: 14.9

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.1 AU - 1.16 AU

Year: 788 Days

Day: 13.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 43,514,737 km

• M1: 185,352 km (0.086 R)
• M2: 672,442 km (0.09 R)
• M3: 1,139,188 km (0.103 R)
• M4: 1,634,656 km (0.116 R)
• M5: 2,589,539 km (0.105 R)
• M6: 3,172,372 km (0.092 R)
• M7: 3,672,329 km (0.039 R)
• M8: 4,892,000 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 566.7

Radius: 9.8

Gravity: 5.9 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.02 AU - 1.66 AU

Year: 1018 Days

Day: 9.8 Hours

Environment

Temp: -181 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 43,514,737 km

• M1: 122,072 km (0.12 R)
• M2: 436,227 km (0.077 R)
• M3: 799,301 km (0.09 R)
• M4: 1,146,817 km (0.109 R)
• M5: 1,742,217 km (0.112 R)
• M6: 2,256,085 km (0.11 R)
• M7: 2,649,079 km (0.088 R)
• M8: 3,444,042 km (0.074 R)
• M9: 4,683,012 km (0.067 R)
• M10: 5,307,583 km (0.119 R)
• M11: 5,640,139 km (0.087 R)
• M12: 6,904,091 km (0.084 R)
• M13: 7,301,124 km (0.112 R)
• M14: 7,837,582 km (0.037 R)
• M15: 9,016,563 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308.4

Radius: 13.3

Gravity: 1.74 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.33 AU - 1.87 AU

Year: 1328 Days

Day: 5.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,514,737 km

• M1: 165,455 km (0.115 R)
• M2: 803,490 km (0.073 R)
• M3: 1,494,184 km (0.085 R)
• M4: 2,287,501 km (0.089 R)
• M5: 2,966,077 km (0.119 R)
• M6: 4,904,117 km (0.12 R)
• M7: 5,460,322 km (0.096 R)
• M8: 6,744,470 km (0.109 R)
• M9: 7,919,412 km (0.104 R)
• M10: 8,348,758 km (0.1 R)
• M11: 9,532,825 km (0.054 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105

Radius: 10.5

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 2.45 AU - 3.95 AU

Year: 3755 Days

Day: 14 Hours

Environment

Temp: -201 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,514,737 km

• M1: 130,749 km (0.084 R)
• M2: 618,737 km (0.111 R)
• M3: 1,763,609 km (0.078 R)
• M4: 2,366,489 km (0.077 R)
• M5: 2,832,187 km (0.103 R)
• M6: 4,306,324 km (0.085 R)
• M7: 5,934,548 km (0.093 R)
• M8: 8,250,323 km (0.105 R)
• M9: 10,193,001 km (0.082 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.6

Radius: 13.9

Gravity: 4.28 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 3.4 AU - 5.02 AU

Year: 5667 Days

Day: 6.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 43,514,737 km

• M1: 174,282 km (0.114 R)
• M2: 920,326 km (0.076 R)
• M3: 1,540,110 km (0.112 R)
• M4: 2,535,534 km (0.053 R)
• M5: 3,603,214 km (0.056 R)
• M6: 4,547,326 km (0.043 R)
• M7: 5,835,065 km (0.097 R)
• M8: 6,960,191 km (0.119 R)
• M9: 7,838,031 km (0.062 R)
• M10: 8,503,741 km (0.078 R)
• M11: 9,377,692 km (0.076 R)
• M12: 11,650,383 km (0.036 R)
• M13: 15,084,552 km (0.088 R)
• M14: 19,143,292 km (0.086 R)
• M15: 20,063,468 km (0.09 R)
• M16: 20,864,714 km (0.065 R)
• M17: 23,238,234 km (0.095 R)
• M18: 23,798,179 km (0.109 R)
• M19: 24,945,146 km (0.103 R)
• M20: 26,821,552 km (0.047 R)
• M21: 29,250,872 km (0.061 R)
• M22: 30,566,735 km (0.119 R)
• M23: 32,217,098 km (0.077 R)
• M24: 34,440,272 km (0.076 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.8

Radius: 14.9

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 4.33 AU - 6.13 AU

Year: 7846 Days

Day: 5.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 43,514,737 km

• M1: 185,651 km (0.076 R)
• M2: 665,411 km (0.11 R)
• M3: 1,323,492 km (0.096 R)
• M4: 2,567,847 km (0.05 R)
• M5: 3,927,692 km (0.039 R)
• M6: 4,996,419 km (0.05 R)
• M7: 6,285,205 km (0.084 R)
• M8: 9,424,516 km (0.12 R)
• M9: 10,206,764 km (0.069 R)
• M10: 10,883,245 km (0.079 R)
• M11: 12,760,998 km (0.103 R)
• M12: 14,364,537 km (0.041 R)
• M13: 17,762,354 km (0.061 R)
• M14: 19,980,890 km (0.088 R)
• M15: 20,506,427 km (0.067 R)
• M16: 24,277,640 km (0.089 R)
• M17: 25,572,709 km (0.117 R)
• M18: 26,551,228 km (0.036 R)
• M19: 28,019,083 km (0.053 R)
• M20: 29,154,979 km (0.063 R)
• M21: 30,223,108 km (0.092 R)
• M22: 32,437,306 km (0.092 R)
• M23: 34,542,298 km (0.08 R)
• M24: 35,958,541 km (0.095 R)
• M25: 36,849,097 km (0.087 R)
• M26: 38,674,490 km (0.088 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 226.6

Radius: 5.8

Gravity: 6.74 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 7.34 AU - 8.8 AU

Year: 15039 Days

Day: 18.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 43,514,737 km

• M1: 72,256 km (0.086 R)
• M2: 285,582 km (0.074 R)
• M3: 480,209 km (0.026 R)
• M4: 1,316,910 km (0.091 R)
• M5: 1,840,503 km (0.058 R)
• M6: 2,769,805 km (0.06 R)
• M7: 3,598,876 km (0.054 R)
• M8: 4,440,065 km (0.095 R)
• M9: 5,902,833 km (0.072 R)
• M10: 8,504,489 km (0.12 R)
• M11: 11,783,675 km (0.096 R)
• M12: 14,343,444 km (0.076 R)
• M13: 17,251,327 km (0.092 R)
• M14: 22,650,015 km (0.096 R)
• M15: 25,272,915 km (0.103 R)
• M16: 33,242,891 km (0.077 R)
• M17: 38,507,390 km (0.11 R)
• M18: 40,710,069 km (0.117 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 350 - 19,638 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit