🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.89

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.6 AU - 0.76 AU

Year: 206 Days

Day: 28.6 Hours

Environment

Temp: 129 °C

Axial Tilt: 36.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.78 AU - 1.02 AU

Year: 313 Days

Day: 29.3 Hours

Environment

Temp: 141 °C

Axial Tilt: 4.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.28 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.43

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.07 AU - 1.49 AU

Year: 532 Days

Day: 35.6 Hours

Environment

Temp: -7 °C

Axial Tilt: 22.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 92,285,258 km

• M1: 41,439 km (0.104 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.3 AU - 1.86 AU

Year: 729 Days

Day: 40 Hours

Environment

Temp: -46 °C

Axial Tilt: 29.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 92,285,258 km

• M1: 544,835 km (0.056 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.78 AU - 2.78 AU

Year: 1264 Days

Day: 25.5 Hours

Environment

Temp: -86 °C

Axial Tilt: 41.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 92,285,258 km

• M1: 26,180 km (0.088 R)
• M2: 1,103,733 km (0.028 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.71

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 2.92 AU - 3.98 AU

Year: 2352 Days

Day: 44.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 36.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 92,285,258 km

• M1: 29,022 km (0.114 R)

Asteroid Belt

Center: 5.26 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 7.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.6

Radius: 9

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 5.88 AU - 8.26 AU

Year: 6901 Days

Day: 9.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 92,285,258 km

• M1: 407,654 km (0.066 R)
• M2: 771,775 km (0.08 R)
• M3: 1,150,557 km (0.107 R)
• M4: 1,570,628 km (0.119 R)
• M5: 3,783,929 km (0.083 R)
• M6: 5,444,465 km (0.11 R)
• M7: 5,947,563 km (0.078 R)
• M8: 6,697,497 km (0.07 R)
• M9: 7,079,121 km (0.078 R)
• M10: 7,509,065 km (0.091 R)
• M11: 9,287,634 km (0.064 R)
• M12: 9,762,907 km (0.058 R)
• M13: 10,633,417 km (0.089 R)
• M14: 11,690,774 km (0.115 R)
• M15: 12,576,244 km (0.032 R)
• M16: 14,271,487 km (0.118 R)
• M17: 16,916,677 km (0.086 R)
• M18: 18,914,257 km (0.058 R)
• M19: 20,595,139 km (0.042 R)
• M20: 21,267,432 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.2

Radius: 8.3

Gravity: 6.84 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 8.03 AU - 8.47 AU

Year: 8699 Days

Day: 12.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 92,285,258 km

• M1: 103,821 km (0.088 R)
• M2: 868,565 km (0.057 R)
• M3: 1,131,110 km (0.04 R)
• M4: 1,751,941 km (0.117 R)
• M5: 2,180,090 km (0.098 R)
• M6: 2,871,531 km (0.11 R)
• M7: 3,537,690 km (0.089 R)
• M8: 4,436,175 km (0.045 R)
• M9: 7,075,830 km (0.07 R)
• M10: 8,874,594 km (0.061 R)
• M11: 18,142,033 km (0.092 R)
• M12: 19,865,700 km (0.11 R)
• M13: 22,330,025 km (0.105 R)
• M14: 24,647,596 km (0.084 R)
• M15: 26,938,986 km (0.064 R)
• M16: 27,856,919 km (0.116 R)
• M17: 30,537,862 km (0.106 R)
• M18: 34,018,855 km (0.028 R)
• M19: 34,338,097 km (0.091 R)
• M20: 37,189,582 km (0.088 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 749.4

Radius: 5.4

Gravity: 25.7 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 12.99 AU - 16.43 AU

Year: 20711 Days

Day: 23.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 92,285,258 km

• M1: 68,067 km (0.057 R)
• M2: 273,315 km (0.112 R)
• M3: 1,121,086 km (0.084 R)
• M4: 1,428,211 km (0.093 R)
• M5: 2,063,403 km (0.094 R)
• M6: 3,534,399 km (0.048 R)
• M7: 5,122,081 km (0.078 R)
• M8: 5,393,602 km (0.104 R)
• M9: 6,486,713 km (0.102 R)
• M10: 7,570,251 km (0.108 R)
• M11: 8,552,211 km (0.103 R)
• M12: 8,934,583 km (0.077 R)
• M13: 9,733,286 km (0.081 R)
• M14: 15,231,008 km (0.11 R)
• M15: 16,367,802 km (0.068 R)
• M16: 16,787,125 km (0.116 R)
• M17: 23,967,374 km (0.117 R)
• M18: 24,617,227 km (0.094 R)
• M19: 25,951,939 km (0.057 R)
• M20: 29,008,074 km (0.109 R)
• M21: 29,870,057 km (0.04 R)
• M22: 31,131,018 km (0.047 R)
• M23: 33,623,617 km (0.118 R)
• M24: 37,679,964 km (0.105 R)
• M25: 40,966,180 km (0.049 R)
• M26: 44,763,423 km (0.096 R)
• M27: 45,090,145 km (0.114 R)
• M28: 45,418,362 km (0.079 R)
• M29: 48,101,849 km (0.1 R)
• M30: 51,961,474 km (0.067 R)
• M31: 53,231,560 km (0.066 R)
• M32: 56,212,148 km (0.046 R)
• M33: 60,888,577 km (0.098 R)
• M34: 69,465,771 km (0.088 R)
• M35: 72,794,623 km (0.101 R)
• M36: 73,020,217 km (0.107 R)
• M37: 73,927,378 km (0.115 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 593.9

Radius: 6.7

Gravity: 13.23 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 17.97 AU - 18.59 AU

Year: 28690 Days

Day: 21.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 92,285,258 km

• M1: 84,074 km (0.059 R)
• M2: 394,490 km (0.037 R)
• M3: 925,113 km (0.082 R)
• M4: 1,390,063 km (0.113 R)
• M5: 1,779,766 km (0.093 R)
• M6: 2,572,784 km (0.107 R)
• M7: 3,336,930 km (0.073 R)
• M8: 5,984,214 km (0.045 R)
• M9: 7,725,234 km (0.114 R)
• M10: 8,208,286 km (0.075 R)
• M11: 8,768,380 km (0.12 R)
• M12: 10,732,750 km (0.045 R)
• M13: 11,064,109 km (0.111 R)
• M14: 11,470,866 km (0.097 R)
• M15: 12,750,825 km (0.119 R)
• M16: 13,578,251 km (0.098 R)
• M17: 15,675,762 km (0.096 R)
• M18: 21,634,994 km (0.062 R)
• M19: 22,919,291 km (0.048 R)
• M20: 24,140,459 km (0.084 R)
• M21: 26,350,767 km (0.081 R)
• M22: 27,938,599 km (0.035 R)
• M23: 30,372,556 km (0.105 R)
• M24: 34,497,568 km (0.028 R)
• M25: 37,445,693 km (0.105 R)
• M26: 40,717,698 km (0.085 R)
• M27: 44,684,734 km (0.091 R)
• M28: 46,761,602 km (0.08 R)
• M29: 50,180,212 km (0.081 R)
• M30: 57,914,422 km (0.108 R)
• M31: 62,916,376 km (0.115 R)
• M32: 69,106,886 km (0.091 R)
• M33: 70,023,173 km (0.077 R)
• M34: 73,293,831 km (0.086 R)
• M35: 74,246,620 km (0.1 R)
• M36: 82,939,004 km (0.077 R)
• M37: 83,973,623 km (0.118 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 240 - 17,565 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit