🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.59

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 33.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 49.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 86,353,733 km

• M1: 39,045 km (0.111 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246

Radius: 12

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.61 AU - 0.93 AU

Year: 443 Days

Day: 12.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 86,353,733 km

• M1: 149,299 km (0.106 R)
• M2: 576,849 km (0.117 R)
• M3: 1,349,373 km (0.1 R)
• M4: 1,879,548 km (0.086 R)
• M5: 2,936,457 km (0.085 R)
• M6: 3,324,663 km (0.038 R)
• M7: 3,713,468 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45.4

Radius: 11.9

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.05 AU - 1.41 AU

Year: 895 Days

Day: 5.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 86,353,733 km

• M1: 148,102 km (0.063 R)
• M2: 543,040 km (0.089 R)
• M3: 946,207 km (0.059 R)
• M4: 1,461,571 km (0.064 R)
• M5: 1,872,217 km (0.12 R)
• M6: 2,244,118 km (0.09 R)
• M7: 2,631,576 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84.3

Radius: 9.6

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.41 AU - 1.99 AU

Year: 1454 Days

Day: 5.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 86,353,733 km

• M1: 119,379 km (0.029 R)
• M2: 518,357 km (0.103 R)
• M3: 998,416 km (0.058 R)
• M4: 1,428,660 km (0.063 R)
• M5: 2,057,569 km (0.08 R)
• M6: 2,753,199 km (0.106 R)
• M7: 3,335,285 km (0.118 R)
• M8: 4,108,855 km (0.098 R)
• M9: 4,854,301 km (0.045 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.1

Radius: 13

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.02 AU - 3.46 AU

Year: 3826 Days

Day: 11 Hours

Environment

Temp: -201 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 86,353,733 km

• M1: 162,164 km (0.114 R)
• M2: 757,863 km (0.08 R)
• M3: 1,666,969 km (0.115 R)
• M4: 2,089,433 km (0.113 R)
• M5: 2,817,377 km (0.054 R)
• M6: 4,880,631 km (0.064 R)
• M7: 5,429,655 km (0.055 R)
• M8: 6,406,080 km (0.116 R)
• M9: 9,556,611 km (0.086 R)
• M10: 11,022,072 km (0.114 R)
• M11: 14,766,207 km (0.082 R)
• M12: 16,031,506 km (0.101 R)
• M13: 16,836,343 km (0.115 R)
• M14: 17,367,864 km (0.115 R)
• M15: 19,220,933 km (0.101 R)
• M16: 19,671,671 km (0.108 R)
• M17: 20,594,241 km (0.026 R)
• M18: 22,032,026 km (0.102 R)
• M19: 22,454,790 km (0.097 R)
• M20: 23,171,513 km (0.114 R)
• M21: 25,336,793 km (0.073 R)
• M22: 25,878,936 km (0.054 R)
• M23: 26,428,857 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 696.3

Radius: 12.3

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 2.6 AU - 3.96 AU

Year: 3897 Days

Day: 9.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 86,353,733 km

• M1: 153,637 km (0.113 R)
• M2: 581,786 km (0.114 R)
• M3: 974,929 km (0.028 R)
• M4: 1,385,725 km (0.101 R)
• M5: 2,046,648 km (0.11 R)
• M6: 2,640,851 km (0.095 R)
• M7: 3,936,668 km (0.104 R)
• M8: 5,375,799 km (0.068 R)
• M9: 5,813,074 km (0.042 R)
• M10: 6,333,375 km (0.096 R)
• M11: 8,260,944 km (0.108 R)
• M12: 9,495,725 km (0.112 R)
• M13: 12,282,434 km (0.082 R)
• M14: 15,086,945 km (0.09 R)
• M15: 16,184,694 km (0.102 R)
• M16: 17,869,914 km (0.079 R)
• M17: 18,415,947 km (0.072 R)
• M18: 19,035,581 km (0.11 R)
• M19: 19,541,371 km (0.071 R)
• M20: 24,579,678 km (0.108 R)
• M21: 25,255,412 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 959.2

Radius: 6.6

Gravity: 22.02 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 8.75 AU - 11.05 AU

Year: 20434 Days

Day: 17.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 86,353,733 km

• M1: 119,977 km (0.083 R)
• M2: 428,897 km (0.093 R)
• M3: 858,393 km (0.086 R)
• M4: 1,131,708 km (0.069 R)
• M5: 2,989,265 km (0.073 R)
• M6: 4,346,566 km (0.107 R)
• M7: 8,262,290 km (0.052 R)
• M8: 8,868,611 km (0.067 R)
• M9: 11,126,940 km (0.06 R)
• M10: 12,142,710 km (0.031 R)
• M11: 17,620,834 km (0.104 R)
• M12: 25,111,050 km (0.095 R)
• M13: 25,682,364 km (0.06 R)
• M14: 27,690,117 km (0.116 R)
• M15: 30,183,465 km (0.093 R)
• M16: 32,551,898 km (0.105 R)
• M17: 35,754,789 km (0.068 R)
• M18: 43,266,696 km (0.087 R)
• M19: 51,949,656 km (0.074 R)
• M20: 52,504,664 km (0.095 R)
• M21: 58,274,504 km (0.065 R)
• M22: 70,374,578 km (0.09 R)
• M23: 74,283,122 km (0.114 R)
• M24: 77,608,533 km (0.114 R)
• M25: 84,299,747 km (0.027 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: 348 - 13,682 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit