🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.94

Radius: 0.98

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.82 AU - 0.82 AU

Year: 267 Days

Day: 43.5 Hours

Environment

Temp: 159 °C

Axial Tilt: 2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.88 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.64

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.83 AU - 0.93 AU

Year: 297 Days

Day: 35.9 Hours

Environment

Temp: 181 °C

Axial Tilt: 38.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.9

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.95 AU - 1.05 AU

Year: 360 Days

Day: 21.2 Hours

Environment

Temp: 49 °C

Axial Tilt: 14.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 39,982,157 km

• M1: 354,547 km (0.102 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.55

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.92 AU - 4.1 AU

Year: 2367 Days

Day: 28.8 Hours

Environment

Temp: -111 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 6.06 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 8.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 832.2

Radius: 8.5

Gravity: 11.52 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 6.64 AU - 10.56 AU

Year: 9077 Days

Day: 7.7 Hours

Environment

Temp: -176 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 39,982,157 km

• M1: 105,766 km (0.052 R)
• M2: 853,157 km (0.11 R)
• M3: 1,167,163 km (0.084 R)
• M4: 1,600,996 km (0.096 R)
• M5: 2,104,543 km (0.109 R)
• M6: 2,751,554 km (0.103 R)
• M7: 3,076,630 km (0.118 R)
• M8: 4,436,175 km (0.084 R)
• M9: 5,009,584 km (0.117 R)
• M10: 5,298,009 km (0.11 R)
• M11: 5,734,086 km (0.115 R)
• M12: 6,793,838 km (0.08 R)
• M13: 7,850,148 km (0.049 R)
• M14: 8,240,150 km (0.106 R)
• M15: 8,780,348 km (0.05 R)
• M16: 9,343,883 km (0.092 R)
• M17: 13,123,174 km (0.113 R)
• M18: 14,238,277 km (0.114 R)
• M19: 15,082,158 km (0.086 R)
• M20: 15,550,100 km (0.11 R)
• M21: 17,739,914 km (0.09 R)
• M22: 19,649,680 km (0.084 R)
• M23: 20,941,458 km (0.114 R)
• M24: 21,356,442 km (0.072 R)
• M25: 21,776,962 km (0.113 R)
• M26: 23,159,845 km (0.038 R)
• M27: 24,508,619 km (0.095 R)
• M28: 25,813,861 km (0.03 R)
• M29: 27,758,184 km (0.092 R)
• M30: 34,403,770 km (0.09 R)
• M31: 38,092,555 km (0.091 R)
• M32: 38,462,959 km (0.039 R)
• M33: 40,351,034 km (0.084 R)
• M34: 42,036,852 km (0.032 R)
• M35: 43,633,959 km (0.106 R)
• M36: 45,548,064 km (0.109 R)
• M37: 45,826,017 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.2

Radius: 8.6

Gravity: 11.28 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 9.53 AU - 12.59 AU

Year: 13237 Days

Day: 14.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 39,982,157 km

• M1: 106,962 km (0.063 R)
• M2: 414,984 km (0.082 R)
• M3: 866,321 km (0.097 R)
• M4: 1,444,816 km (0.081 R)
• M5: 2,771,001 km (0.087 R)
• M6: 3,077,976 km (0.096 R)
• M7: 3,874,884 km (0.11 R)
• M8: 5,986,757 km (0.114 R)
• M9: 12,888,305 km (0.045 R)
• M10: 13,214,878 km (0.117 R)
• M11: 14,436,643 km (0.094 R)
• M12: 15,732,011 km (0.106 R)
• M13: 17,339,291 km (0.072 R)
• M14: 18,718,284 km (0.11 R)
• M15: 19,137,457 km (0.098 R)
• M16: 24,368,596 km (0.117 R)
• M17: 33,333,248 km (0.108 R)
• M18: 43,243,808 km (0.114 R)
• M19: 55,466,403 km (0.119 R)
• M20: 60,791,638 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 921.4

Radius: 6.4

Gravity: 22.5 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 12.19 AU - 16.79 AU

Year: 19851 Days

Day: 18.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 39,982,157 km

• M1: 79,586 km (0.113 R)
• M2: 1,122,134 km (0.107 R)
• M3: 1,496,876 km (0.095 R)
• M4: 1,992,195 km (0.097 R)
• M5: 2,841,312 km (0.1 R)
• M6: 3,361,165 km (0.095 R)
• M7: 6,399,049 km (0.072 R)
• M8: 7,338,374 km (0.047 R)
• M9: 8,153,682 km (0.076 R)
• M10: 9,782,803 km (0.036 R)
• M11: 11,955,563 km (0.066 R)
• M12: 12,230,524 km (0.112 R)
• M13: 12,509,972 km (0.087 R)
• M14: 12,793,460 km (0.08 R)
• M15: 13,299,999 km (0.117 R)
• M16: 13,819,851 km (0.085 R)
• M17: 14,664,032 km (0.034 R)
• M18: 15,460,790 km (0.099 R)
• M19: 17,755,921 km (0.058 R)
• M20: 20,758,799 km (0.086 R)
• M21: 26,332,816 km (0.102 R)
• M22: 27,388,977 km (0.057 R)
• M23: 28,718,004 km (0.115 R)
• M24: 29,211,827 km (0.099 R)
• M25: 31,243,515 km (0.1 R)
• M26: 32,962,245 km (0.034 R)
• M27: 34,188,349 km (0.032 R)
• M28: 38,944,664 km (0.102 R)
• M29: 40,933,568 km (0.108 R)
• M30: 58,150,188 km (0.095 R)
• M31: 62,791,013 km (0.084 R)
• M32: 64,672,207 km (0.064 R)
• M33: 71,214,122 km (0.088 R)
• M34: 75,109,949 km (0.072 R)
• M35: 82,079,714 km (0.103 R)
• M36: 82,575,631 km (0.092 R)
• M37: 83,073,642 km (0.089 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 75.5

Radius: 3.3

Gravity: 6.93 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 13.17 AU - 18.75 AU

Year: 22947 Days

Day: 24.2 Hours

Environment

Temp: -195 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 39,982,157 km

• M1: 41,139 km (0.104 R)
• M2: 201,658 km (0.047 R)
• M3: 514,467 km (0.108 R)
• M4: 642,972 km (0.11 R)
• M5: 1,753,586 km (0.055 R)
• M6: 2,130,573 km (0.058 R)
• M7: 2,773,694 km (0.08 R)
• M8: 2,958,148 km (0.101 R)
• M9: 3,283,524 km (0.093 R)
• M10: 4,740,009 km (0.088 R)
• M11: 5,063,738 km (0.055 R)
• M12: 5,370,564 km (0.062 R)
• M13: 6,906,036 km (0.115 R)
• M14: 7,130,732 km (0.119 R)
• M15: 7,793,750 km (0.119 R)
• M16: 7,955,615 km (0.114 R)
• M17: 8,625,215 km (0.089 R)
• M18: 10,316,269 km (0.085 R)
• M19: 20,261,685 km (0.109 R)
• M20: 26,071,169 km (0.071 R)
• M21: 30,839,451 km (0.07 R)
• M22: 33,427,644 km (0.095 R)

Kuiper Belt

Range: 30.5 - 59.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 473 - 11,134 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit