🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.18

Radius: 1.07

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.45 AU - 0.71 AU

Year: 290 Days

Day: 25.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 26.1 °

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: 12.8

Radius: 10.3

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.82 AU - 0.84 AU

Year: 496 Days

Day: 14.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (2)

Outer Limit: 33,731,880 km

• M1: 132,394 km (0.039 R)
• M2: 701,614 km (0.078 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 788.2

Radius: 13.8

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.95 AU - 1.41 AU

Year: 841 Days

Day: 8.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 33,731,880 km

• M1: 171,589 km (0.029 R)
• M2: 655,089 km (0.096 R)
• M3: 1,541,756 km (0.081 R)
• M4: 2,038,271 km (0.085 R)
• M5: 2,736,145 km (0.094 R)
• M6: 3,364,157 km (0.03 R)
• M7: 5,019,757 km (0.097 R)
• M8: 5,469,298 km (0.063 R)
• M9: 5,925,422 km (0.114 R)
• M10: 6,779,626 km (0.107 R)
• M11: 7,617,374 km (0.06 R)
• M12: 8,137,227 km (0.076 R)
• M13: 8,760,302 km (0.12 R)
• M14: 9,471,191 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.8

Radius: 10.8

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.35 AU - 1.51 AU

Year: 1122 Days

Day: 10.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 33,731,880 km

• M1: 134,339 km (0.077 R)
• M2: 650,900 km (0.11 R)
• M3: 1,059,303 km (0.057 R)
• M4: 1,747,303 km (0.079 R)
• M5: 2,192,207 km (0.113 R)
• M6: 2,675,109 km (0.044 R)
• M7: 3,746,080 km (0.062 R)
• M8: 4,132,791 km (0.092 R)
• M9: 4,855,498 km (0.032 R)
• M10: 5,296,662 km (0.093 R)
• M11: 7,115,922 km (0.085 R)
• M12: 8,806,827 km (0.112 R)
• M13: 10,497,283 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 677.3

Radius: 14

Gravity: 3.46 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 2.15 AU - 3.53 AU

Year: 3140 Days

Day: 6.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,731,880 km

• M1: 175,329 km (0.109 R)
• M2: 877,840 km (0.065 R)
• M3: 1,938,489 km (0.085 R)
• M4: 2,534,338 km (0.116 R)
• M5: 3,026,215 km (0.096 R)
• M6: 3,658,715 km (0.086 R)
• M7: 4,400,122 km (0.075 R)
• M8: 5,020,505 km (0.054 R)
• M9: 5,938,138 km (0.067 R)
• M10: 6,639,154 km (0.103 R)
• M11: 7,777,593 km (0.097 R)
• M12: 9,480,915 km (0.087 R)
• M13: 11,253,649 km (0.069 R)
• M14: 11,891,086 km (0.117 R)
• M15: 14,338,358 km (0.052 R)
• M16: 15,190,018 km (0.088 R)
• M17: 15,969,274 km (0.098 R)
• M18: 16,829,611 km (0.067 R)
• M19: 18,005,600 km (0.118 R)
• M20: 18,526,051 km (0.113 R)
• M21: 18,997,134 km (0.055 R)
• M22: 19,840,717 km (0.119 R)
• M23: 20,458,406 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676.2

Radius: 14.8

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 4.42 AU - 6.98 AU

Year: 8927 Days

Day: 15 Hours

Environment

Temp: -218 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,731,880 km

• M1: 184,454 km (0.091 R)
• M2: 699,520 km (0.11 R)
• M3: 1,204,113 km (0.034 R)
• M4: 2,309,342 km (0.088 R)
• M5: 2,941,244 km (0.048 R)
• M6: 5,561,151 km (0.101 R)
• M7: 6,931,767 km (0.118 R)
• M8: 9,845,634 km (0.057 R)
• M9: 11,254,996 km (0.106 R)
• M10: 18,552,081 km (0.075 R)
• M11: 19,073,280 km (0.071 R)
• M12: 27,055,224 km (0.107 R)
• M13: 27,629,680 km (0.095 R)
• M14: 34,162,768 km (0.077 R)
• M15: 35,059,907 km (0.061 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 281.4

Radius: 12.5

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 4.83 AU - 6.81 AU

Year: 9211 Days

Day: 6.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 33,731,880 km

• M1: 158,275 km (0.094 R)
• M2: 596,746 km (0.051 R)
• M3: 1,035,068 km (0.089 R)
• M4: 1,429,108 km (0.116 R)
• M5: 1,869,973 km (0.085 R)
• M6: 2,288,249 km (0.098 R)
• M7: 2,714,753 km (0.056 R)
• M8: 3,114,179 km (0.067 R)
• M9: 3,619,221 km (0.111 R)
• M10: 4,557,200 km (0.119 R)
• M11: 4,986,396 km (0.11 R)
• M12: 5,620,691 km (0.119 R)
• M13: 6,179,290 km (0.115 R)
• M14: 7,335,681 km (0.118 R)
• M15: 10,208,858 km (0.097 R)
• M16: 10,713,003 km (0.086 R)
• M17: 11,920,706 km (0.042 R)
• M18: 12,531,814 km (0.035 R)
• M19: 15,011,398 km (0.104 R)
• M20: 18,131,860 km (0.088 R)
• M21: 19,985,378 km (0.096 R)
• M22: 20,848,408 km (0.032 R)
• M23: 22,265,698 km (0.1 R)
• M24: 23,114,965 km (0.043 R)
• M25: 30,705,113 km (0.078 R)
• M26: 31,854,174 km (0.064 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: 289 - 13,474 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit