🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.45 AU - 0.57 AU

Year: 239 Days

Day: 32.4 Hours

Environment

Temp: -107 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.8

Radius: 10.7

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.65 AU - 0.73 AU

Year: 376 Days

Day: 7.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 68,463,877 km

• M1: 133,142 km (0.055 R)
• M2: 502,050 km (0.076 R)
• M3: 911,649 km (0.062 R)
• M4: 1,674,000 km (0.111 R)
• M5: 2,177,397 km (0.059 R)
• M6: 2,929,426 km (0.102 R)
• M7: 3,355,181 km (0.058 R)
• M8: 3,945,345 km (0.062 R)
• M9: 5,032,772 km (0.063 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 803.4

Radius: 11.6

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.71 AU - 0.91 AU

Year: 478 Days

Day: 9.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 68,463,877 km

• M1: 144,362 km (0.107 R)
• M2: 539,749 km (0.088 R)
• M3: 1,258,118 km (0.105 R)
• M4: 1,645,128 km (0.101 R)
• M5: 2,077,765 km (0.112 R)
• M6: 2,699,942 km (0.11 R)
• M7: 3,177,160 km (0.102 R)
• M8: 3,697,461 km (0.066 R)
• M9: 4,075,495 km (0.118 R)
• M10: 4,464,599 km (0.116 R)
• M11: 4,941,816 km (0.118 R)
• M12: 5,470,196 km (0.097 R)
• M13: 6,072,626 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.2

Radius: 8.8

Gravity: 10.86 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.9 AU - 0.98 AU

Year: 598 Days

Day: 13.6 Hours

Environment

Temp: -153 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 68,463,877 km

• M1: 109,506 km (0.081 R)
• M2: 395,238 km (0.078 R)
• M3: 695,181 km (0.108 R)
• M4: 1,160,281 km (0.114 R)
• M5: 1,520,064 km (0.068 R)
• M6: 1,891,964 km (0.09 R)
• M7: 2,224,969 km (0.111 R)
• M8: 2,914,466 km (0.117 R)
• M9: 3,245,376 km (0.118 R)
• M10: 3,954,021 km (0.118 R)
• M11: 4,778,605 km (0.081 R)
• M12: 5,135,545 km (0.065 R)
• M13: 5,676,042 km (0.104 R)
• M14: 6,394,561 km (0.071 R)
• M15: 7,304,266 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.2

Radius: 11.4

Gravity: 6.76 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.02 AU - 1.06 AU

Year: 696 Days

Day: 6.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 68,463,877 km

• M1: 141,819 km (0.111 R)
• M2: 570,117 km (0.097 R)
• M3: 1,013,226 km (0.066 R)
• M4: 1,647,521 km (0.045 R)
• M5: 2,197,294 km (0.102 R)
• M6: 2,795,386 km (0.079 R)
• M7: 3,430,878 km (0.117 R)
• M8: 3,856,932 km (0.108 R)
• M9: 4,612,551 km (0.037 R)
• M10: 6,251,695 km (0.112 R)
• M11: 6,802,963 km (0.112 R)
• M12: 7,572,495 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 793.6

Radius: 11.4

Gravity: 6.11 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.85 AU - 1.35 AU

Year: 757 Days

Day: 7.3 Hours

Environment

Temp: -162 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 68,463,877 km

• M1: 141,819 km (0.05 R)
• M2: 576,401 km (0.114 R)
• M3: 1,324,689 km (0.097 R)
• M4: 1,827,188 km (0.061 R)
• M5: 2,244,566 km (0.093 R)
• M6: 2,610,333 km (0.065 R)
• M7: 2,991,359 km (0.066 R)
• M8: 3,478,599 km (0.048 R)
• M9: 3,927,094 km (0.115 R)
• M10: 4,479,858 km (0.093 R)
• M11: 6,000,071 km (0.062 R)
• M12: 7,839,377 km (0.096 R)
• M13: 8,435,076 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 766.8

Radius: 13

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.97 AU - 1.23 AU

Year: 757 Days

Day: 11.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 68,463,877 km

• M1: 161,715 km (0.091 R)
• M2: 626,366 km (0.116 R)
• M3: 1,184,067 km (0.083 R)
• M4: 1,858,754 km (0.1 R)
• M5: 2,358,261 km (0.086 R)
• M6: 3,317,482 km (0.095 R)
• M7: 4,310,812 km (0.109 R)
• M8: 5,742,314 km (0.093 R)
• M9: 6,242,719 km (0.108 R)
• M10: 7,729,124 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 94.9

Radius: 5.3

Gravity: 3.38 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 5.21 AU - 7.45 AU

Year: 10448 Days

Day: 21.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 68,463,877 km

• M1: 66,122 km (0.072 R)
• M2: 746,793 km (0.043 R)
• M3: 1,120,937 km (0.113 R)
• M4: 1,324,988 km (0.054 R)
• M5: 1,611,917 km (0.087 R)
• M6: 1,795,773 km (0.064 R)
• M7: 2,105,141 km (0.109 R)
• M8: 2,813,038 km (0.04 R)
• M9: 3,385,400 km (0.079 R)
• M10: 3,836,587 km (0.11 R)
• M11: 4,832,759 km (0.119 R)
• M12: 5,087,225 km (0.104 R)
• M13: 6,077,862 km (0.07 R)
• M14: 9,772,331 km (0.115 R)
• M15: 15,379,409 km (0.098 R)
• M16: 17,246,839 km (0.098 R)
• M17: 17,901,480 km (0.114 R)
• M18: 18,696,293 km (0.074 R)
• M19: 19,514,294 km (0.092 R)
• M20: 20,159,659 km (0.11 R)
• M21: 22,601,097 km (0.057 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 706.8

Radius: 4.2

Gravity: 40.07 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 6.77 AU - 10.61 AU

Year: 16805 Days

Day: 23.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 68,463,877 km

• M1: 75,697 km (0.051 R)
• M2: 751,281 km (0.084 R)
• M3: 884,572 km (0.107 R)
• M4: 1,428,959 km (0.097 R)
• M5: 2,252,196 km (0.096 R)
• M6: 2,444,280 km (0.101 R)
• M7: 2,601,208 km (0.102 R)
• M8: 2,812,889 km (0.054 R)
• M9: 3,324,513 km (0.041 R)
• M10: 3,602,466 km (0.076 R)
• M11: 4,048,268 km (0.093 R)
• M12: 4,596,843 km (0.082 R)
• M13: 8,603,673 km (0.081 R)
• M14: 12,788,374 km (0.102 R)
• M15: 13,748,344 km (0.098 R)
• M16: 19,013,740 km (0.113 R)
• M17: 24,641,163 km (0.115 R)
• M18: 26,665,521 km (0.086 R)
• M19: 28,798,039 km (0.102 R)
• M20: 30,800,257 km (0.06 R)
• M21: 34,686,361 km (0.108 R)
• M22: 35,079,055 km (0.101 R)
• M23: 40,311,091 km (0.075 R)
• M24: 42,065,575 km (0.074 R)
• M25: 52,288,046 km (0.069 R)
• M26: 54,372,692 km (0.103 R)
• M27: 54,902,269 km (0.046 R)
• M28: 56,511,942 km (0.1 R)
• M29: 58,152,731 km (0.099 R)
• M30: 60,201,026 km (0.117 R)
• M31: 63,070,761 km (0.082 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 262 - 15,170 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit