🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.14

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.53 AU - 0.53 AU

Year: 253 Days

Day: 24.9 Hours

Environment

Temp: -111 °C

Axial Tilt: 44 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.55 AU - 0.69 AU

Year: 320 Days

Day: 47.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 23.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.73

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.54 AU - 0.78 AU

Year: 352 Days

Day: 47.9 Hours

Environment

Temp: -135 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 33,542,370 km

• M1: 153,487 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 89.7

Radius: 14.4

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.76 AU - 0.76 AU

Year: 435 Days

Day: 9.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 33,542,370 km

• M1: 179,069 km (0.092 R)
• M2: 639,680 km (0.092 R)
• M3: 1,411,606 km (0.027 R)
• M4: 2,753,947 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676

Radius: 9.6

Gravity: 7.34 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.08 AU - 1.1 AU

Year: 747 Days

Day: 10.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 33,542,370 km

• M1: 120,127 km (0.111 R)
• M2: 427,401 km (0.077 R)
• M3: 864,376 km (0.069 R)
• M4: 1,193,641 km (0.053 R)
• M5: 1,530,087 km (0.115 R)
• M6: 1,867,580 km (0.076 R)
• M7: 2,730,610 km (0.097 R)
• M8: 3,927,542 km (0.098 R)
• M9: 5,260,310 km (0.078 R)
• M10: 6,119,600 km (0.108 R)
• M11: 6,446,920 km (0.1 R)
• M12: 6,764,217 km (0.106 R)
• M13: 7,476,453 km (0.041 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504

Radius: 14.4

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.87 AU - 1.43 AU

Year: 809 Days

Day: 7.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,542,370 km

• M1: 179,966 km (0.072 R)
• M2: 663,167 km (0.074 R)
• M3: 1,156,691 km (0.11 R)
• M4: 1,660,387 km (0.111 R)
• M5: 2,234,693 km (0.103 R)
• M6: 2,836,226 km (0.111 R)
• M7: 4,037,347 km (0.086 R)
• M8: 4,495,566 km (0.051 R)
• M9: 5,143,773 km (0.083 R)
• M10: 5,834,766 km (0.106 R)
• M11: 6,322,604 km (0.106 R)
• M12: 7,606,154 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.1

Radius: 14.4

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.22 AU - 1.5 AU

Year: 1040 Days

Day: 13.1 Hours

Environment

Temp: -165 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 33,542,370 km

• M1: 179,218 km (0.107 R)
• M2: 669,899 km (0.102 R)
• M3: 1,410,858 km (0.104 R)
• M4: 1,942,379 km (0.107 R)
• M5: 2,751,703 km (0.086 R)
• M6: 3,395,423 km (0.113 R)
• M7: 4,171,088 km (0.11 R)
• M8: 4,769,779 km (0.108 R)
• M9: 5,888,771 km (0.115 R)
• M10: 6,599,959 km (0.11 R)
• M11: 7,489,169 km (0.076 R)
• M12: 9,363,929 km (0.118 R)
• M13: 9,885,278 km (0.059 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 462.4

Radius: 9.5

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 3 AU - 3.88 AU

Year: 4185 Days

Day: 8 Hours

Environment

Temp: -208 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,542,370 km

• M1: 118,482 km (0.106 R)
• M2: 492,775 km (0.081 R)
• M3: 907,012 km (0.079 R)
• M4: 1,593,965 km (0.088 R)
• M5: 2,194,900 km (0.12 R)
• M6: 2,517,732 km (0.114 R)
• M7: 2,923,142 km (0.032 R)
• M8: 3,241,636 km (0.107 R)
• M9: 3,824,769 km (0.039 R)
• M10: 4,185,300 km (0.095 R)
• M11: 4,591,757 km (0.081 R)
• M12: 6,312,432 km (0.041 R)
• M13: 7,609,445 km (0.119 R)
• M14: 8,532,015 km (0.077 R)
• M15: 8,892,097 km (0.108 R)
• M16: 10,112,966 km (0.093 R)
• M17: 14,800,914 km (0.108 R)
• M18: 15,480,088 km (0.109 R)
• M19: 17,816,957 km (0.078 R)
• M20: 18,525,602 km (0.081 R)
• M21: 20,188,681 km (0.083 R)
• M22: 21,882,129 km (0.105 R)
• M23: 23,177,946 km (0.114 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.3

Radius: 12

Gravity: 1.86 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 5.46 AU - 6.3 AU

Year: 9354 Days

Day: 11.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 33,542,370 km

• M1: 149,299 km (0.073 R)
• M2: 736,171 km (0.072 R)
• M3: 1,153,699 km (0.088 R)
• M4: 1,854,415 km (0.074 R)
• M5: 2,286,454 km (0.034 R)
• M6: 2,897,860 km (0.084 R)
• M7: 3,550,257 km (0.114 R)
• M8: 4,298,396 km (0.098 R)
• M9: 5,584,638 km (0.06 R)
• M10: 7,183,391 km (0.07 R)
• M11: 8,380,323 km (0.059 R)
• M12: 11,311,095 km (0.059 R)
• M13: 11,701,545 km (0.104 R)
• M14: 13,033,266 km (0.091 R)
• M15: 13,571,519 km (0.111 R)
• M16: 15,935,165 km (0.056 R)
• M17: 19,381,302 km (0.108 R)
• M18: 21,020,894 km (0.085 R)
• M19: 21,987,446 km (0.056 R)
• M20: 26,492,736 km (0.091 R)
• M21: 27,973,605 km (0.103 R)
• M22: 29,509,078 km (0.052 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 219 - 10,711 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit