🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.81

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 30.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.44 AU - 0.6 AU

Year: 246 Days

Day: 30.8 Hours

Environment

Temp: -116 °C

Axial Tilt: 38.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.8

Radius: 10

Gravity: 7.38 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.68 AU - 0.8 AU

Year: 418 Days

Day: 11.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,077,638 km

• M1: 124,316 km (0.07 R)
• M2: 550,221 km (0.115 R)
• M3: 870,061 km (0.093 R)
• M4: 1,432,100 km (0.074 R)
• M5: 1,985,313 km (0.088 R)
• M6: 2,528,054 km (0.106 R)
• M7: 3,055,537 km (0.059 R)
• M8: 3,717,806 km (0.093 R)
• M9: 4,069,960 km (0.074 R)
• M10: 5,742,165 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 591.6

Radius: 9.1

Gravity: 7.14 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.69 AU - 0.91 AU

Year: 469 Days

Day: 14.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 42,077,638 km

• M1: 115,340 km (0.049 R)
• M2: 430,393 km (0.12 R)
• M3: 718,070 km (0.095 R)
• M4: 1,164,021 km (0.064 R)
• M5: 1,897,200 km (0.115 R)
• M6: 2,333,577 km (0.083 R)
• M7: 2,996,894 km (0.034 R)
• M8: 3,408,737 km (0.041 R)
• M9: 3,989,925 km (0.113 R)
• M10: 4,276,405 km (0.119 R)
• M11: 4,845,475 km (0.078 R)
• M12: 5,463,913 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.1

Radius: 11.6

Gravity: 7.21 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.81 AU - 1.11 AU

Year: 617 Days

Day: 10.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,077,638 km

• M1: 144,212 km (0.06 R)
• M2: 510,727 km (0.063 R)
• M3: 1,075,160 km (0.114 R)
• M4: 1,466,807 km (0.069 R)
• M5: 1,893,161 km (0.089 R)
• M6: 2,279,572 km (0.075 R)
• M7: 2,941,543 km (0.108 R)
• M8: 3,371,188 km (0.112 R)
• M9: 3,770,614 km (0.062 R)
• M10: 4,616,291 km (0.061 R)
• M11: 5,831,624 km (0.078 R)
• M12: 6,369,578 km (0.101 R)
• M13: 7,249,513 km (0.111 R)
• M14: 7,824,717 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.1

Radius: 11.3

Gravity: 6.76 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.33 AU - 1.97 AU

Year: 1390 Days

Day: 6.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,077,638 km

• M1: 140,622 km (0.1 R)
• M2: 550,221 km (0.066 R)
• M3: 913,295 km (0.088 R)
• M4: 1,304,194 km (0.032 R)
• M5: 1,748,799 km (0.089 R)
• M6: 2,153,611 km (0.056 R)
• M7: 2,594,925 km (0.068 R)
• M8: 3,141,256 km (0.062 R)
• M9: 3,579,727 km (0.094 R)
• M10: 3,987,980 km (0.095 R)
• M11: 4,389,351 km (0.096 R)
• M12: 4,777,707 km (0.115 R)
• M13: 5,146,915 km (0.102 R)
• M14: 5,966,262 km (0.105 R)
• M15: 7,504,278 km (0.101 R)
• M16: 8,380,323 km (0.056 R)
• M17: 8,950,141 km (0.032 R)
• M18: 10,850,633 km (0.047 R)
• M19: 12,007,623 km (0.066 R)
• M20: 12,577,441 km (0.104 R)
• M21: 13,853,361 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.1

Radius: 14.7

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.46 AU - 2.42 AU

Year: 1773 Days

Day: 8.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 42,077,638 km

• M1: 183,108 km (0.032 R)
• M2: 1,098,497 km (0.083 R)
• M3: 1,599,949 km (0.099 R)
• M4: 2,293,036 km (0.035 R)
• M5: 3,673,675 km (0.095 R)
• M6: 4,384,115 km (0.098 R)
• M7: 5,576,111 km (0.082 R)
• M8: 6,443,479 km (0.119 R)
• M9: 7,079,270 km (0.069 R)
• M10: 7,868,998 km (0.067 R)
• M11: 8,536,653 km (0.107 R)
• M12: 9,304,988 km (0.087 R)
• M13: 10,355,165 km (0.041 R)
• M14: 10,874,120 km (0.089 R)
• M15: 11,703,640 km (0.11 R)
• M16: 13,900,036 km (0.029 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 318

Radius: 6.7

Gravity: 7.08 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 6.03 AU - 7.91 AU

Year: 12071 Days

Day: 17.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 42,077,638 km

• M1: 109,057 km (0.05 R)
• M2: 357,988 km (0.117 R)
• M3: 635,342 km (0.094 R)
• M4: 975,827 km (0.101 R)
• M5: 1,334,413 km (0.044 R)
• M6: 1,578,856 km (0.1 R)
• M7: 1,837,959 km (0.071 R)
• M8: 2,210,458 km (0.096 R)
• M9: 3,961,352 km (0.105 R)
• M10: 4,305,576 km (0.036 R)
• M11: 4,933,738 km (0.114 R)
• M12: 5,238,618 km (0.094 R)
• M13: 7,146,589 km (0.071 R)
• M14: 10,091,723 km (0.033 R)
• M15: 12,156,473 km (0.106 R)
• M16: 12,488,729 km (0.107 R)
• M17: 16,826,021 km (0.088 R)
• M18: 17,447,749 km (0.107 R)
• M19: 18,957,940 km (0.084 R)
• M20: 20,397,520 km (0.056 R)
• M21: 23,068,590 km (0.101 R)
• M22: 25,510,775 km (0.115 R)
• M23: 31,210,305 km (0.053 R)
• M24: 35,635,260 km (0.065 R)
• M25: 41,826,218 km (0.108 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: 558 - 19,528 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit