🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.49 AU - 0.75 AU

Year: 320 Days

Day: 44.9 Hours

Environment

Temp: -122 °C

Axial Tilt: 6.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.52 AU - 0.82 AU

Year: 360 Days

Day: 25.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 22.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 7,432,009 km

• M1: 120,426 km (0.103 R)
• M2: 329,714 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 900.6

Radius: 14.6

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.78 AU - 0.98 AU

Year: 542 Days

Day: 10.4 Hours

Environment

Temp: -162 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 7,432,009 km

• M1: 184,155 km (0.079 R)
• M2: 278,701 km (0.07 R)
• M3: 406,607 km (0.074 R)
• M4: 533,316 km (0.05 R)
• M5: 624,870 km (0.094 R)
• M6: 746,344 km (0.055 R)
• M7: 842,535 km (0.066 R)
• M8: 959,222 km (0.053 R)
• M9: 1,159,533 km (0.049 R)
• M10: 1,268,291 km (0.108 R)
• M11: 1,404,874 km (0.103 R)
• M12: 1,578,407 km (0.092 R)
• M13: 1,693,747 km (0.035 R)
• M14: 1,865,934 km (0.074 R)
• M15: 2,121,298 km (0.109 R)
• M16: 2,300,516 km (0.111 R)
• M17: 2,395,660 km (0.083 R)
• M18: 2,590,287 km (0.058 R)
• M19: 2,720,587 km (0.081 R)
• M20: 3,011,704 km (0.099 R)
• M21: 3,140,807 km (0.113 R)
• M22: 3,573,444 km (0.112 R)
• M23: 3,710,476 km (0.111 R)
• M24: 3,910,638 km (0.049 R)
• M25: 4,358,085 km (0.041 R)
• M26: 4,681,366 km (0.094 R)
• M27: 4,803,438 km (0.075 R)
• M28: 4,897,984 km (0.072 R)
• M29: 5,176,086 km (0.116 R)
• M30: 5,439,678 km (0.07 R)
• M31: 5,637,895 km (0.096 R)
• M32: 5,757,872 km (0.084 R)
• M33: 5,899,093 km (0.093 R)
• M34: 6,412,812 km (0.112 R)
• M35: 6,538,175 km (0.106 R)
• M36: 6,685,678 km (0.104 R)
• M37: 6,802,215 km (0.087 R)
• M38: 6,962,435 km (0.083 R)
• M39: 7,123,851 km (0.087 R)
• M40: 7,329,996 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.7

Radius: 10.5

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.92 AU - 0.98 AU

Year: 607 Days

Day: 13.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 7,432,009 km

• M1: 131,646 km (0.115 R)
• M2: 258,655 km (0.088 R)
• M3: 374,294 km (0.117 R)
• M4: 457,769 km (0.063 R)
• M5: 554,859 km (0.117 R)
• M6: 626,217 km (0.057 R)
• M7: 701,016 km (0.081 R)
• M8: 789,428 km (0.118 R)
• M9: 857,495 km (0.099 R)
• M10: 992,881 km (0.033 R)
• M11: 1,067,231 km (0.069 R)
• M12: 1,178,532 km (0.073 R)
• M13: 1,380,040 km (0.086 R)
• M14: 1,455,438 km (0.094 R)
• M15: 1,532,181 km (0.11 R)
• M16: 1,690,157 km (0.087 R)
• M17: 1,798,466 km (0.118 R)
• M18: 2,089,433 km (0.09 R)
• M19: 2,300,217 km (0.027 R)
• M20: 2,431,115 km (0.107 R)
• M21: 2,512,795 km (0.097 R)
• M22: 2,626,789 km (0.089 R)
• M23: 2,790,449 km (0.046 R)
• M24: 2,892,475 km (0.074 R)
• M25: 2,984,777 km (0.088 R)
• M26: 3,089,196 km (0.112 R)
• M27: 3,161,302 km (0.026 R)
• M28: 3,426,838 km (0.103 R)
• M29: 3,495,953 km (0.093 R)
• M30: 3,647,046 km (0.116 R)
• M31: 3,853,940 km (0.111 R)
• M32: 3,925,747 km (0.117 R)
• M33: 4,046,473 km (0.092 R)
• M34: 4,131,744 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.9

Radius: 9

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.12 AU - 1.74 AU

Year: 1122 Days

Day: 8.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 7,432,009 km

• M1: 137,480 km (0.113 R)
• M2: 211,531 km (0.028 R)
• M3: 319,541 km (0.05 R)
• M4: 393,742 km (0.088 R)
• M5: 652,396 km (0.112 R)
• M6: 752,028 km (0.104 R)
• M7: 1,190,649 km (0.077 R)
• M8: 1,260,960 km (0.095 R)
• M9: 1,393,803 km (0.062 R)
• M10: 1,726,060 km (0.062 R)
• M11: 1,840,203 km (0.109 R)
• M12: 1,929,214 km (0.094 R)
• M13: 1,998,628 km (0.114 R)
• M14: 2,190,412 km (0.109 R)
• M15: 2,299,618 km (0.088 R)
• M16: 2,425,580 km (0.113 R)
• M17: 2,638,158 km (0.104 R)
• M18: 2,976,399 km (0.093 R)
• M19: 3,073,339 km (0.105 R)
• M20: 3,353,685 km (0.085 R)
• M21: 3,471,568 km (0.105 R)
• M22: 3,530,959 km (0.107 R)
• M23: 3,608,001 km (0.119 R)
• M24: 3,694,170 km (0.106 R)
• M25: 3,912,583 km (0.111 R)
• M26: 4,189,488 km (0.105 R)
• M27: 4,289,270 km (0.094 R)
• M28: 4,574,703 km (0.07 R)
• M29: 5,115,798 km (0.026 R)
• M30: 5,320,299 km (0.108 R)
• M31: 5,418,584 km (0.086 R)
• M32: 5,577,308 km (0.079 R)
• M33: 5,637,147 km (0.109 R)
• M34: 5,960,129 km (0.103 R)
• M35: 6,062,304 km (0.041 R)
• M36: 6,227,011 km (0.052 R)
• M37: 6,487,312 km (0.049 R)
• M38: 6,582,007 km (0.111 R)
• M39: 6,783,216 km (0.119 R)
• M40: 7,126,693 km (0.114 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 227 - 18,565 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit