🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.01

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.46 AU - 0.7 AU

Year: 290 Days

Day: 12.3 Hours

Environment

Temp: -121 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.89

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.58 AU - 0.68 AU

Year: 328 Days

Day: 27.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.77

Radius: 0.9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 20.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424.6

Radius: 13

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.6 AU - 0.96 AU

Year: 452 Days

Day: 5.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 61,869,290 km

• M1: 161,715 km (0.11 R)
• M2: 703,409 km (0.07 R)
• M3: 1,121,685 km (0.118 R)
• M4: 1,877,304 km (0.069 R)
• M5: 2,582,508 km (0.044 R)
• M6: 3,446,885 km (0.102 R)
• M7: 4,150,443 km (0.085 R)
• M8: 4,592,206 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 474.2

Radius: 8.1

Gravity: 7.23 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1.95 AU - 2.55 AU

Year: 2214 Days

Day: 11.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,869,290 km

• M1: 103,522 km (0.078 R)
• M2: 356,342 km (0.107 R)
• M3: 659,876 km (0.116 R)
• M4: 1,043,744 km (0.095 R)
• M5: 1,361,041 km (0.118 R)
• M6: 1,671,008 km (0.085 R)
• M7: 3,108,943 km (0.058 R)
• M8: 4,029,718 km (0.079 R)
• M9: 4,493,022 km (0.098 R)
• M10: 5,099,791 km (0.101 R)
• M11: 5,411,703 km (0.101 R)
• M12: 7,139,409 km (0.044 R)
• M13: 7,876,777 km (0.11 R)
• M14: 8,726,493 km (0.091 R)
• M15: 9,502,457 km (0.09 R)
• M16: 10,358,605 km (0.04 R)
• M17: 11,265,468 km (0.068 R)
• M18: 12,824,876 km (0.105 R)
• M19: 14,656,103 km (0.09 R)
• M20: 15,334,081 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.4

Radius: 11.8

Gravity: 1.53 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 2.09 AU - 3.41 AU

Year: 2992 Days

Day: 15 Hours

Environment

Temp: -200 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,869,290 km

• M1: 148,102 km (0.062 R)
• M2: 527,482 km (0.114 R)
• M3: 1,152,951 km (0.077 R)
• M4: 2,216,891 km (0.087 R)
• M5: 2,606,444 km (0.119 R)
• M6: 3,056,883 km (0.097 R)
• M7: 3,693,272 km (0.083 R)
• M8: 6,338,911 km (0.095 R)
• M9: 7,106,796 km (0.086 R)
• M10: 8,583,477 km (0.099 R)
• M11: 11,205,030 km (0.099 R)
• M12: 13,156,834 km (0.113 R)
• M13: 14,192,200 km (0.106 R)

Asteroid Belt

Center: 4.63 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 581.4

Radius: 5.5

Gravity: 19.22 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 6.02 AU - 7 AU

Year: 10896 Days

Day: 15.4 Hours

Environment

Temp: -230 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 61,869,290 km

• M1: 74,051 km (0.107 R)
• M2: 1,023,549 km (0.117 R)
• M3: 4,499,904 km (0.046 R)
• M4: 7,172,320 km (0.083 R)
• M5: 10,024,703 km (0.097 R)
• M6: 10,227,857 km (0.11 R)
• M7: 11,230,761 km (0.091 R)
• M8: 21,050,814 km (0.074 R)
• M9: 23,638,558 km (0.11 R)
• M10: 24,271,357 km (0.116 R)
• M11: 32,994,110 km (0.03 R)
• M12: 34,356,497 km (0.07 R)
• M13: 36,230,510 km (0.086 R)
• M14: 36,709,522 km (0.108 R)
• M15: 40,309,146 km (0.044 R)
• M16: 40,565,707 km (0.06 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 801.7

Radius: 4.7

Gravity: 36.29 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 7.2 AU - 7.86 AU

Year: 13555 Days

Day: 20.9 Hours

Environment

Temp: -232 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 61,869,290 km

• M1: 58,493 km (0.035 R)
• M2: 606,769 km (0.105 R)
• M3: 1,744,162 km (0.11 R)
• M4: 2,239,630 km (0.071 R)
• M5: 2,574,579 km (0.106 R)
• M6: 2,918,355 km (0.113 R)
• M7: 3,668,888 km (0.118 R)
• M8: 3,926,047 km (0.095 R)
• M9: 4,073,999 km (0.116 R)
• M10: 4,972,783 km (0.102 R)
• M11: 5,181,472 km (0.069 R)
• M12: 6,233,145 km (0.071 R)
• M13: 7,924,648 km (0.104 R)
• M14: 9,053,813 km (0.102 R)
• M15: 9,365,275 km (0.061 R)
• M16: 10,286,200 km (0.098 R)
• M17: 12,181,007 km (0.091 R)
• M18: 12,433,079 km (0.106 R)
• M19: 13,342,933 km (0.073 R)
• M20: 15,221,583 km (0.116 R)
• M21: 18,648,871 km (0.076 R)
• M22: 18,983,820 km (0.106 R)
• M23: 19,838,772 km (0.082 R)
• M24: 20,988,132 km (0.114 R)
• M25: 23,225,518 km (0.105 R)
• M26: 24,005,222 km (0.1 R)
• M27: 29,165,900 km (0.094 R)
• M28: 29,844,476 km (0.098 R)
• M29: 30,533,673 km (0.109 R)
• M30: 32,302,668 km (0.116 R)
• M31: 32,664,545 km (0.103 R)
• M32: 36,043,662 km (0.118 R)
• M33: 36,563,365 km (0.119 R)
• M34: 37,484,589 km (0.08 R)
• M35: 43,339,999 km (0.097 R)
• M36: 47,254,227 km (0.115 R)
• M37: 48,662,243 km (0.111 R)
• M38: 51,070,619 km (0.064 R)
• M39: 55,259,060 km (0.109 R)
• M40: 60,763,364 km (0.117 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 386 - 13,897 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit