🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.56

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.46 AU - 0.68 AU

Year: 282 Days

Day: 18.1 Hours

Environment

Temp: -122 °C

Axial Tilt: 26 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 757.4

Radius: 11.5

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.73 AU - 0.91 AU

Year: 487 Days

Day: 14 Hours

Environment

Temp: -145 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,755,981 km

• M1: 143,165 km (0.119 R)
• M2: 544,686 km (0.083 R)
• M3: 966,103 km (0.09 R)
• M4: 1,568,234 km (0.116 R)
• M5: 1,960,630 km (0.109 R)
• M6: 2,390,125 km (0.084 R)
• M7: 3,118,966 km (0.117 R)
• M8: 3,683,249 km (0.115 R)
• M9: 4,171,537 km (0.103 R)
• M10: 4,748,984 km (0.106 R)
• M11: 5,228,894 km (0.074 R)
• M12: 6,119,450 km (0.062 R)
• M13: 6,495,240 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499.7

Radius: 8.4

Gravity: 7.08 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.13 AU - 1.69 AU

Year: 1098 Days

Day: 6.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,755,981 km

• M1: 104,419 km (0.112 R)
• M2: 396,135 km (0.091 R)
• M3: 689,796 km (0.087 R)
• M4: 1,095,356 km (0.08 R)
• M5: 1,497,175 km (0.098 R)
• M6: 2,305,154 km (0.11 R)
• M7: 2,588,043 km (0.08 R)
• M8: 2,881,255 km (0.102 R)
• M9: 3,391,533 km (0.051 R)
• M10: 3,728,877 km (0.105 R)
• M11: 5,602,590 km (0.075 R)
• M12: 6,033,282 km (0.092 R)
• M13: 6,376,011 km (0.111 R)
• M14: 6,891,525 km (0.086 R)
• M15: 7,829,055 km (0.071 R)
• M16: 8,930,993 km (0.07 R)
• M17: 9,320,247 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.1

Radius: 11.2

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.64 AU - 2.08 AU

Year: 1664 Days

Day: 5.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 35,755,981 km

• M1: 139,724 km (0.115 R)
• M2: 507,286 km (0.061 R)
• M3: 1,774,081 km (0.093 R)
• M4: 4,967,098 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.7

Radius: 13.8

Gravity: 2.87 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2.3 AU - 2.46 AU

Year: 2409 Days

Day: 13.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 35,755,981 km

• M1: 172,187 km (0.113 R)
• M2: 650,302 km (0.112 R)
• M3: 1,237,922 km (0.096 R)
• M4: 2,213,450 km (0.119 R)
• M5: 3,548,312 km (0.03 R)
• M6: 4,193,677 km (0.115 R)
• M7: 4,638,731 km (0.112 R)
• M8: 5,093,060 km (0.115 R)
• M9: 6,193,651 km (0.1 R)
• M10: 7,418,259 km (0.04 R)
• M11: 8,165,351 km (0.075 R)
• M12: 8,831,062 km (0.116 R)
• M13: 9,636,197 km (0.073 R)
• M14: 10,489,653 km (0.099 R)
• M15: 11,354,179 km (0.119 R)
• M16: 12,718,811 km (0.097 R)
• M17: 13,834,213 km (0.085 R)
• M18: 14,689,763 km (0.115 R)
• M19: 16,556,146 km (0.065 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 810.5

Radius: 13.1

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 2.63 AU - 2.73 AU

Year: 2878 Days

Day: 5.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 35,755,981 km

• M1: 163,062 km (0.064 R)
• M2: 1,265,149 km (0.118 R)
• M3: 1,811,481 km (0.116 R)
• M4: 2,513,992 km (0.111 R)
• M5: 4,161,663 km (0.091 R)
• M6: 4,783,841 km (0.045 R)
• M7: 6,159,692 km (0.117 R)
• M8: 6,790,397 km (0.05 R)
• M9: 8,626,860 km (0.104 R)
• M10: 11,268,908 km (0.102 R)
• M11: 13,970,646 km (0.065 R)
• M12: 15,680,250 km (0.108 R)
• M13: 19,269,851 km (0.062 R)
• M14: 19,815,136 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.3

Radius: 11.6

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 4.08 AU - 6.54 AU

Year: 8027 Days

Day: 13.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 35,755,981 km

• M1: 144,212 km (0.107 R)
• M2: 606,470 km (0.065 R)
• M3: 1,105,827 km (0.094 R)
• M4: 1,495,081 km (0.118 R)
• M5: 2,272,990 km (0.033 R)
• M6: 2,839,667 km (0.055 R)
• M7: 3,912,882 km (0.11 R)
• M8: 4,595,796 km (0.115 R)
• M9: 5,267,939 km (0.092 R)
• M10: 5,783,005 km (0.111 R)
• M11: 6,199,336 km (0.079 R)
• M12: 7,310,399 km (0.104 R)
• M13: 8,069,459 km (0.118 R)
• M14: 8,549,668 km (0.117 R)
• M15: 9,567,382 km (0.057 R)
• M16: 10,060,158 km (0.088 R)
• M17: 11,996,253 km (0.111 R)
• M18: 13,771,382 km (0.092 R)
• M19: 16,914,283 km (0.094 R)
• M20: 20,951,331 km (0.075 R)
• M21: 22,795,275 km (0.111 R)
• M22: 24,745,133 km (0.073 R)
• M23: 25,164,905 km (0.118 R)
• M24: 27,335,720 km (0.092 R)
• M25: 27,965,228 km (0.101 R)
• M26: 30,197,228 km (0.104 R)
• M27: 30,676,839 km (0.113 R)
• M28: 31,552,884 km (0.106 R)
• M29: 33,456,965 km (0.098 R)
• M30: 35,649,322 km (0.077 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 527 - 15,247 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit