🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.99

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.49 AU - 0.79 AU

Year: 326 Days

Day: 12.3 Hours

Environment

Temp: -124 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 35,458,594 km

• M1: 55,351 km (0.115 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.5

Radius: 13.8

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.67 AU - 1.03 AU

Year: 498 Days

Day: 5.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 35,458,594 km

• M1: 171,589 km (0.083 R)
• M2: 731,234 km (0.098 R)
• M3: 1,175,989 km (0.104 R)
• M4: 1,631,664 km (0.096 R)
• M5: 2,477,341 km (0.108 R)
• M6: 2,918,804 km (0.031 R)
• M7: 3,649,440 km (0.063 R)
• M8: 4,426,302 km (0.112 R)
• M9: 4,987,892 km (0.113 R)
• M10: 5,461,070 km (0.033 R)
• M11: 6,108,380 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 972.7

Radius: 11.4

Gravity: 7.48 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.68 AU - 1.02 AU

Year: 498 Days

Day: 13.9 Hours

Environment

Temp: -144 °C

Axial Tilt: 80.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 35,458,594 km

• M1: 141,819 km (0.042 R)
• M2: 549,922 km (0.12 R)
• M3: 1,096,253 km (0.108 R)
• M4: 1,515,875 km (0.096 R)
• M5: 2,106,338 km (0.113 R)
• M6: 2,936,008 km (0.084 R)
• M7: 3,722,593 km (0.073 R)
• M8: 4,100,328 km (0.095 R)
• M9: 5,550,231 km (0.093 R)
• M10: 6,083,248 km (0.07 R)
• M11: 6,731,306 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 46.5

Radius: 8.8

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.16 AU - 1.9 AU

Year: 1203 Days

Day: 6 Hours

Environment

Temp: -170 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 35,458,594 km

• M1: 109,506 km (0.108 R)
• M2: 409,749 km (0.081 R)
• M3: 705,504 km (0.109 R)
• M4: 1,187,209 km (0.086 R)
• M5: 1,484,908 km (0.079 R)
• M6: 1,935,796 km (0.039 R)
• M7: 3,050,450 km (0.096 R)
• M8: 3,549,359 km (0.093 R)
• M9: 4,126,956 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 314.6

Radius: 9.1

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.25 AU - 1.95 AU

Year: 1287 Days

Day: 14.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 35,458,594 km

• M1: 113,096 km (0.1 R)
• M2: 526,285 km (0.104 R)
• M3: 828,024 km (0.073 R)
• M4: 1,182,272 km (0.104 R)
• M5: 2,006,407 km (0.113 R)
• M6: 2,290,044 km (0.087 R)
• M7: 2,802,716 km (0.091 R)
• M8: 3,093,385 km (0.046 R)
• M9: 3,589,152 km (0.114 R)
• M10: 4,233,620 km (0.067 R)
• M11: 4,566,774 km (0.106 R)
• M12: 5,044,141 km (0.1 R)
• M13: 5,772,084 km (0.113 R)
• M14: 6,767,359 km (0.041 R)
• M15: 7,224,081 km (0.118 R)
• M16: 7,652,529 km (0.068 R)
• M17: 8,022,485 km (0.116 R)
• M18: 8,560,289 km (0.076 R)
• M19: 9,013,272 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 306.2

Radius: 12

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.73 AU - 1.79 AU

Year: 1485 Days

Day: 8.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,458,594 km

• M1: 149,299 km (0.088 R)
• M2: 617,690 km (0.112 R)
• M3: 1,173,894 km (0.12 R)
• M4: 1,699,881 km (0.094 R)
• M5: 3,007,964 km (0.071 R)
• M6: 3,519,440 km (0.044 R)
• M7: 3,928,889 km (0.057 R)
• M8: 4,370,203 km (0.086 R)
• M9: 5,960,278 km (0.051 R)
• M10: 6,590,085 km (0.092 R)
• M11: 7,050,099 km (0.116 R)
• M12: 7,506,821 km (0.046 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 856.8

Radius: 10.2

Gravity: 8.24 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.08 AU - 2.78 AU

Year: 2408 Days

Day: 13.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 35,458,594 km

• M1: 126,859 km (0.108 R)
• M2: 636,838 km (0.108 R)
• M3: 1,526,197 km (0.084 R)
• M4: 2,085,843 km (0.056 R)
• M5: 3,101,164 km (0.027 R)
• M6: 3,468,127 km (0.041 R)
• M7: 3,942,951 km (0.07 R)
• M8: 5,000,010 km (0.073 R)
• M9: 5,838,057 km (0.079 R)
• M10: 6,290,740 km (0.057 R)
• M11: 6,824,505 km (0.101 R)
• M12: 7,176,958 km (0.03 R)
• M13: 7,886,501 km (0.111 R)
• M14: 8,473,971 km (0.106 R)
• M15: 9,160,626 km (0.118 R)
• M16: 10,146,027 km (0.062 R)
• M17: 10,683,981 km (0.119 R)
• M18: 12,499,650 km (0.112 R)
• M19: 13,208,146 km (0.066 R)
• M20: 14,368,576 km (0.115 R)
• M21: 15,798,283 km (0.114 R)
• M22: 16,312,601 km (0.105 R)
• M23: 17,483,503 km (0.057 R)
• M24: 18,145,474 km (0.08 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291

Radius: 12.8

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 4.12 AU - 6.06 AU

Year: 7301 Days

Day: 9.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,458,594 km

• M1: 159,322 km (0.115 R)
• M2: 687,851 km (0.052 R)
• M3: 2,236,039 km (0.043 R)
• M4: 3,099,668 km (0.074 R)
• M5: 5,917,194 km (0.115 R)
• M6: 6,625,989 km (0.116 R)
• M7: 9,499,016 km (0.086 R)
• M8: 10,647,628 km (0.071 R)
• M9: 16,894,686 km (0.117 R)
• M10: 18,257,672 km (0.104 R)
• M11: 19,294,086 km (0.111 R)
• M12: 20,575,392 km (0.099 R)
• M13: 22,201,222 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 157.5

Radius: 3.4

Gravity: 13.62 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 7.25 AU - 7.91 AU

Year: 13269 Days

Day: 17.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 35,458,594 km

• M1: 54,902 km (0.119 R)
• M2: 292,913 km (0.041 R)
• M3: 803,191 km (0.11 R)
• M4: 933,192 km (0.099 R)
• M5: 1,128,267 km (0.08 R)
• M6: 1,626,727 km (0.118 R)
• M7: 4,630,652 km (0.099 R)
• M8: 6,532,341 km (0.076 R)
• M9: 7,464,934 km (0.116 R)
• M10: 8,120,771 km (0.113 R)
• M11: 8,982,604 km (0.1 R)
• M12: 9,413,745 km (0.105 R)
• M13: 10,457,490 km (0.034 R)
• M14: 10,694,153 km (0.101 R)
• M15: 13,706,905 km (0.112 R)
• M16: 14,162,281 km (0.108 R)
• M17: 15,712,264 km (0.072 R)
• M18: 18,380,193 km (0.059 R)
• M19: 20,001,535 km (0.059 R)
• M20: 20,587,061 km (0.056 R)
• M21: 21,639,182 km (0.091 R)
• M22: 30,215,928 km (0.111 R)
• M23: 31,769,651 km (0.03 R)
• M24: 32,066,752 km (0.095 R)
• M25: 35,035,223 km (0.056 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 404 - 13,407 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit