🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.18

Radius: 0.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.69 AU - 0.73 AU

Year: 254 Days

Day: 35.4 Hours

Environment

Temp: -2 °C

Axial Tilt: 8.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 28,091,297 km

• M1: 121,623 km (0.119 R)
• M2: 192,832 km (0.076 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.77

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.87 AU - 1.15 AU

Year: 431 Days

Day: 16.6 Hours

Environment

Temp: -53 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.96 AU - 1.26 AU

Year: 497 Days

Day: 23.2 Hours

Environment

Temp: -59 °C

Axial Tilt: 78.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.31 AU - 1.71 AU

Year: 788 Days

Day: 39.8 Hours

Environment

Temp: -97 °C

Axial Tilt: 23.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.66 AU - 2.32 AU

Year: 1192 Days

Day: 17.8 Hours

Environment

Temp: -120 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 28,091,297 km

• M1: 33,660 km (0.092 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.73

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 2.49 AU - 2.55 AU

Year: 1699 Days

Day: 37.4 Hours

Environment

Temp: -121 °C

Axial Tilt: 12.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 225.4

Radius: 13.3

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 2.59 AU - 3.15 AU

Year: 2064 Days

Day: 8.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 28,091,297 km

• M1: 165,605 km (0.098 R)
• M2: 601,533 km (0.075 R)
• M3: 1,033,871 km (0.098 R)
• M4: 1,641,537 km (0.03 R)
• M5: 2,253,243 km (0.1 R)
• M6: 3,069,000 km (0.093 R)
• M7: 3,924,551 km (0.114 R)
• M8: 6,086,838 km (0.076 R)
• M9: 6,656,507 km (0.05 R)
• M10: 8,089,654 km (0.111 R)
• M11: 8,582,579 km (0.075 R)
• M12: 9,182,916 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 937.7

Radius: 10.6

Gravity: 8.35 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 4.4 AU - 5.32 AU

Year: 4549 Days

Day: 5.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 28,091,297 km

• M1: 131,945 km (0.102 R)
• M2: 587,172 km (0.071 R)
• M3: 961,466 km (0.074 R)
• M4: 1,745,658 km (0.041 R)
• M5: 2,108,133 km (0.045 R)
• M6: 3,304,168 km (0.119 R)
• M7: 3,911,087 km (0.107 R)
• M8: 5,234,579 km (0.097 R)
• M9: 5,637,147 km (0.105 R)
• M10: 6,407,875 km (0.077 R)
• M11: 6,903,194 km (0.091 R)
• M12: 9,476,277 km (0.081 R)
• M13: 10,520,021 km (0.074 R)
• M14: 11,399,358 km (0.119 R)
• M15: 12,327,014 km (0.083 R)
• M16: 12,681,262 km (0.065 R)
• M17: 14,277,022 km (0.083 R)
• M18: 16,791,912 km (0.028 R)
• M19: 17,479,913 km (0.068 R)
• M20: 17,863,033 km (0.094 R)
• M21: 19,383,994 km (0.078 R)
• M22: 20,704,046 km (0.115 R)
• M23: 21,861,335 km (0.109 R)
• M24: 23,833,334 km (0.093 R)
• M25: 24,702,348 km (0.086 R)
• M26: 31,480,628 km (0.093 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 597.4

Radius: 12.5

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 4.66 AU - 5.42 AU

Year: 4804 Days

Day: 6 Hours

Environment

Temp: -158 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 28,091,297 km

• M1: 155,432 km (0.071 R)
• M2: 955,930 km (0.054 R)
• M3: 1,447,958 km (0.05 R)
• M4: 2,315,177 km (0.115 R)
• M5: 3,000,634 km (0.116 R)
• M6: 3,668,439 km (0.112 R)
• M7: 4,505,589 km (0.068 R)
• M8: 5,411,105 km (0.045 R)
• M9: 6,040,014 km (0.11 R)
• M10: 6,942,987 km (0.049 R)
• M11: 8,632,994 km (0.072 R)
• M12: 9,134,596 km (0.103 R)
• M13: 9,655,495 km (0.027 R)
• M14: 12,958,916 km (0.067 R)
• M15: 15,671,424 km (0.066 R)
• M16: 18,678,491 km (0.092 R)
• M17: 20,862,021 km (0.098 R)
• M18: 23,210,708 km (0.093 R)
• M19: 24,871,244 km (0.086 R)
• M20: 27,426,226 km (0.11 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 475 - 15,293 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit