🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 5

Radius: 1.9

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.54 AU - 0.54 AU

Year: 260 Days

Day: 40.7 Hours

Environment

Temp: -113 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 193.1

Radius: 14.9

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.73 AU - 1.15 AU

Year: 598 Days

Day: 9.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 49,376,327 km

• M1: 185,352 km (0.04 R)
• M2: 686,654 km (0.103 R)
• M3: 1,193,193 km (0.089 R)
• M4: 2,278,076 km (0.102 R)
• M5: 2,788,953 km (0.118 R)
• M6: 3,387,793 km (0.109 R)
• M7: 4,363,022 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 232.4

Radius: 14

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.87 AU - 1.03 AU

Year: 607 Days

Day: 7.9 Hours

Environment

Temp: -166 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 49,376,327 km

• M1: 175,628 km (0.078 R)
• M2: 824,583 km (0.105 R)
• M3: 1,358,049 km (0.113 R)
• M4: 2,014,036 km (0.117 R)
• M5: 3,371,338 km (0.096 R)
• M6: 4,061,133 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.8

Radius: 11.8

Gravity: 5.95 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.81 AU - 1.35 AU

Year: 736 Days

Day: 9.7 Hours

Environment

Temp: -163 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,376,327 km

• M1: 146,756 km (0.084 R)
• M2: 538,104 km (0.086 R)
• M3: 1,005,447 km (0.08 R)
• M4: 1,373,009 km (0.05 R)
• M5: 2,139,399 km (0.106 R)
• M6: 3,057,481 km (0.08 R)
• M7: 4,887,512 km (0.092 R)
• M8: 6,927,279 km (0.112 R)
• M9: 7,903,405 km (0.03 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 361.8

Radius: 13.3

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.07 AU - 1.51 AU

Year: 961 Days

Day: 11.5 Hours

Environment

Temp: -164 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 49,376,327 km

• M1: 165,605 km (0.091 R)
• M2: 612,902 km (0.069 R)
• M3: 1,091,017 km (0.078 R)
• M4: 1,519,615 km (0.097 R)
• M5: 2,072,828 km (0.114 R)
• M6: 2,528,802 km (0.099 R)
• M7: 3,003,925 km (0.094 R)
• M8: 3,538,887 km (0.114 R)
• M9: 4,182,457 km (0.062 R)
• M10: 4,818,847 km (0.11 R)
• M11: 5,374,004 km (0.088 R)
• M12: 5,799,161 km (0.108 R)
• M13: 6,306,897 km (0.12 R)
• M14: 6,865,495 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.3

Radius: 10

Gravity: 8.42 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.83 AU - 3.23 AU

Year: 3460 Days

Day: 13.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 49,376,327 km

• M1: 124,615 km (0.085 R)
• M2: 451,187 km (0.108 R)
• M3: 790,774 km (0.099 R)
• M4: 1,484,609 km (0.076 R)
• M5: 1,976,936 km (0.079 R)
• M6: 2,755,892 km (0.106 R)
• M7: 3,524,376 km (0.083 R)
• M8: 4,201,157 km (0.065 R)
• M9: 4,570,963 km (0.027 R)
• M10: 4,962,311 km (0.069 R)
• M11: 5,784,800 km (0.1 R)
• M12: 6,097,609 km (0.078 R)
• M13: 7,072,688 km (0.106 R)
• M14: 8,078,135 km (0.036 R)
• M15: 8,433,730 km (0.096 R)
• M16: 10,247,305 km (0.12 R)
• M17: 13,311,219 km (0.107 R)
• M18: 16,087,306 km (0.078 R)
• M19: 16,651,440 km (0.086 R)
• M20: 17,522,099 km (0.101 R)
• M21: 17,938,580 km (0.098 R)
• M22: 18,853,520 km (0.111 R)
• M23: 22,267,045 km (0.078 R)
• M24: 24,413,176 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.1

Radius: 10.4

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.88 AU - 6.44 AU

Year: 8834 Days

Day: 10.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 140.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 49,376,327 km

• M1: 135,386 km (0.083 R)
• M2: 462,407 km (0.043 R)
• M3: 1,182,122 km (0.111 R)
• M4: 2,150,619 km (0.095 R)
• M5: 2,666,283 km (0.115 R)
• M6: 3,100,865 km (0.087 R)
• M7: 4,643,368 km (0.092 R)
• M8: 5,597,803 km (0.107 R)
• M9: 7,411,378 km (0.119 R)
• M10: 9,458,774 km (0.1 R)
• M11: 9,935,991 km (0.071 R)
• M12: 12,827,718 km (0.067 R)
• M13: 13,575,558 km (0.113 R)
• M14: 14,693,952 km (0.075 R)
• M15: 17,177,127 km (0.086 R)
• M16: 17,822,791 km (0.041 R)
• M17: 19,438,448 km (0.063 R)
• M18: 20,785,128 km (0.083 R)
• M19: 23,036,576 km (0.109 R)
• M20: 23,427,027 km (0.068 R)
• M21: 26,711,597 km (0.036 R)
• M22: 27,578,367 km (0.105 R)
• M23: 30,384,674 km (0.056 R)
• M24: 32,001,677 km (0.094 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 638.2

Radius: 12.8

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 5.46 AU - 6.02 AU

Year: 9021 Days

Day: 13.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 49,376,327 km

• M1: 165,306 km (0.11 R)
• M2: 579,991 km (0.076 R)
• M3: 1,277,267 km (0.11 R)
• M4: 2,586,846 km (0.113 R)
• M5: 5,537,814 km (0.11 R)
• M6: 6,716,496 km (0.101 R)
• M7: 12,119,073 km (0.115 R)
• M8: 12,966,395 km (0.079 R)
• M9: 16,481,945 km (0.057 R)
• M10: 17,735,276 km (0.09 R)
• M11: 19,352,130 km (0.115 R)
• M12: 23,217,889 km (0.046 R)
• M13: 24,970,727 km (0.103 R)
• M14: 27,283,809 km (0.048 R)
• M15: 30,551,176 km (0.118 R)
• M16: 32,225,775 km (0.098 R)
• M17: 32,761,335 km (0.076 R)
• M18: 43,188,756 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 277.4

Radius: 4.4

Gravity: 14.33 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 7.54 AU - 9.58 AU

Year: 16429 Days

Day: 15.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 49,376,327 km

• M1: 60,587 km (0.097 R)
• M2: 241,900 km (0.062 R)
• M3: 654,790 km (0.105 R)
• M4: 891,903 km (0.027 R)
• M5: 1,567,187 km (0.118 R)
• M6: 2,224,221 km (0.094 R)
• M7: 2,532,842 km (0.071 R)
• M8: 2,935,709 km (0.094 R)
• M9: 3,478,898 km (0.075 R)
• M10: 4,793,116 km (0.094 R)
• M11: 11,031,048 km (0.053 R)
• M12: 11,360,313 km (0.12 R)
• M13: 14,363,789 km (0.12 R)
• M14: 16,257,249 km (0.114 R)
• M15: 16,612,096 km (0.056 R)
• M16: 20,613,539 km (0.119 R)
• M17: 22,924,378 km (0.052 R)
• M18: 24,557,388 km (0.116 R)
• M19: 25,497,311 km (0.117 R)
• M20: 26,656,545 km (0.111 R)
• M21: 27,249,103 km (0.066 R)
• M22: 28,460,546 km (0.056 R)
• M23: 29,287,822 km (0.067 R)
• M24: 36,010,152 km (0.119 R)
• M25: 44,101,751 km (0.103 R)
• M26: 44,514,642 km (0.082 R)
• M27: 49,228,471 km (0.087 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 273 - 17,943 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit