🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.45 AU - 0.65 AU

Year: 259 Days

Day: 43.2 Hours

Environment

Temp: -128 °C

Axial Tilt: 15.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,741,370 km

• M1: 525,687 km (0.118 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.9

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.54 AU - 0.68 AU

Year: 303 Days

Day: 47.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,741,370 km

• M1: 771,177 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 326.7

Radius: 13

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.61 AU - 0.89 AU

Year: 413 Days

Day: 14.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,741,370 km

• M1: 161,715 km (0.1 R)
• M2: 600,935 km (0.052 R)
• M3: 1,229,844 km (0.12 R)
• M4: 1,705,266 km (0.05 R)
• M5: 2,208,364 km (0.095 R)
• M6: 2,627,687 km (0.103 R)
• M7: 3,181,498 km (0.086 R)
• M8: 3,755,206 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.3

Radius: 12.8

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.72 AU - 0.92 AU

Year: 472 Days

Day: 5.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 106.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,741,370 km

• M1: 159,172 km (0.079 R)
• M2: 564,732 km (0.104 R)
• M3: 1,369,868 km (0.088 R)
• M4: 2,109,779 km (0.091 R)
• M5: 2,649,528 km (0.111 R)
• M6: 3,090,692 km (0.072 R)
• M7: 3,606,954 km (0.059 R)
• M8: 4,459,513 km (0.087 R)
• M9: 4,926,108 km (0.094 R)
• M10: 5,390,759 km (0.093 R)
• M11: 5,830,427 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.8

Radius: 8.6

Gravity: 8.61 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.19 AU - 1.43 AU

Year: 953 Days

Day: 11.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,741,370 km

• M1: 108,608 km (0.119 R)
• M2: 604,076 km (0.111 R)
• M3: 1,270,984 km (0.1 R)
• M4: 1,610,571 km (0.06 R)
• M5: 2,020,319 km (0.114 R)
• M6: 2,374,866 km (0.081 R)
• M7: 4,019,695 km (0.101 R)
• M8: 4,362,274 km (0.079 R)
• M9: 5,688,010 km (0.042 R)
• M10: 6,184,376 km (0.053 R)
• M11: 7,923,750 km (0.115 R)
• M12: 9,334,608 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678.6

Radius: 11.7

Gravity: 4.96 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.69 AU - 3.51 AU

Year: 3470 Days

Day: 8 Hours

Environment

Temp: -206 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 52,741,370 km

• M1: 145,559 km (0.116 R)
• M2: 576,999 km (0.1 R)
• M3: 1,051,075 km (0.101 R)
• M4: 3,238,046 km (0.113 R)
• M5: 3,676,517 km (0.111 R)
• M6: 4,840,538 km (0.088 R)
• M7: 5,547,538 km (0.102 R)
• M8: 6,264,411 km (0.035 R)
• M9: 6,887,785 km (0.103 R)
• M10: 7,357,971 km (0.108 R)
• M11: 8,189,436 km (0.108 R)
• M12: 8,753,719 km (0.071 R)
• M13: 9,999,570 km (0.118 R)
• M14: 10,440,136 km (0.048 R)
• M15: 12,934,531 km (0.108 R)
• M16: 14,095,111 km (0.083 R)
• M17: 14,958,141 km (0.079 R)
• M18: 15,856,178 km (0.114 R)
• M19: 16,345,961 km (0.092 R)
• M20: 17,241,753 km (0.103 R)
• M21: 17,934,690 km (0.114 R)
• M22: 20,252,261 km (0.115 R)
• M23: 20,700,007 km (0.047 R)
• M24: 21,285,383 km (0.087 R)
• M25: 22,150,508 km (0.087 R)
• M26: 22,900,592 km (0.082 R)
• M27: 23,386,635 km (0.085 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 739.9

Radius: 3.5

Gravity: 60.4 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 5.15 AU - 7.49 AU

Year: 10102 Days

Day: 18.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 52,741,370 km

• M1: 47,423 km (0.08 R)
• M2: 421,716 km (0.113 R)
• M3: 835,205 km (0.087 R)
• M4: 1,176,737 km (0.078 R)
• M5: 2,294,383 km (0.085 R)
• M6: 2,468,963 km (0.115 R)
• M7: 3,209,622 km (0.105 R)
• M8: 3,553,847 km (0.115 R)
• M9: 3,682,651 km (0.066 R)
• M10: 3,841,225 km (0.106 R)
• M11: 5,757,573 km (0.047 R)
• M12: 7,039,777 km (0.084 R)
• M13: 8,319,287 km (0.084 R)
• M14: 10,359,653 km (0.09 R)
• M15: 11,107,642 km (0.071 R)
• M16: 11,550,900 km (0.08 R)
• M17: 14,591,926 km (0.085 R)
• M18: 17,452,237 km (0.107 R)
• M19: 18,895,857 km (0.103 R)
• M20: 24,066,109 km (0.032 R)
• M21: 25,183,306 km (0.112 R)
• M22: 28,228,370 km (0.112 R)
• M23: 28,535,495 km (0.097 R)
• M24: 29,260,596 km (0.057 R)
• M25: 31,400,294 km (0.09 R)
• M26: 31,619,754 km (0.044 R)
• M27: 32,173,116 km (0.094 R)
• M28: 33,756,760 km (0.086 R)
• M29: 36,107,989 km (0.075 R)
• M30: 37,200,802 km (0.042 R)
• M31: 39,707,763 km (0.032 R)
• M32: 41,660,165 km (0.088 R)
• M33: 47,754,931 km (0.083 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.41 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 270.9

Radius: 4

Gravity: 16.93 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 9.11 AU - 9.71 AU

Year: 18353 Days

Day: 18.9 Hours

Environment

Temp: -238 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 52,741,370 km

• M1: 50,265 km (0.114 R)
• M2: 176,525 km (0.097 R)
• M3: 327,320 km (0.117 R)
• M4: 580,739 km (0.078 R)
• M5: 853,456 km (0.099 R)
• M6: 1,256,772 km (0.078 R)
• M7: 1,619,547 km (0.09 R)
• M8: 2,328,341 km (0.072 R)
• M9: 2,806,306 km (0.119 R)
• M10: 3,033,246 km (0.108 R)
• M11: 3,602,167 km (0.108 R)
• M12: 3,788,566 km (0.082 R)
• M13: 4,066,220 km (0.085 R)
• M14: 4,947,950 km (0.099 R)
• M15: 6,557,473 km (0.107 R)
• M16: 7,373,380 km (0.117 R)
• M17: 7,501,436 km (0.117 R)
• M18: 8,485,790 km (0.079 R)
• M19: 10,598,710 km (0.051 R)
• M20: 14,188,760 km (0.102 R)
• M21: 15,267,360 km (0.069 R)
• M22: 15,475,451 km (0.118 R)
• M23: 16,254,856 km (0.062 R)
• M24: 19,553,339 km (0.095 R)
• M25: 23,088,935 km (0.107 R)
• M26: 23,455,151 km (0.052 R)
• M27: 26,525,198 km (0.059 R)
• M28: 26,926,869 km (0.092 R)
• M29: 31,728,512 km (0.111 R)
• M30: 32,067,500 km (0.102 R)
• M31: 32,523,325 km (0.104 R)
• M32: 33,564,526 km (0.102 R)
• M33: 36,080,164 km (0.097 R)
• M34: 36,573,089 km (0.099 R)
• M35: 37,321,078 km (0.075 R)
• M36: 38,334,006 km (0.118 R)
• M37: 43,535,823 km (0.109 R)
• M38: 44,799,626 km (0.087 R)
• M39: 45,368,995 km (0.092 R)
• M40: 47,991,446 km (0.067 R)
• M41: 48,887,537 km (0.111 R)
• M42: 52,111,670 km (0.089 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: 317 - 11,696 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit