🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.91

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.52 AU - 0.54 AU

Year: 145 Days

Day: 43.5 Hours

Environment

Temp: 214 °C

Axial Tilt: 4.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1 AU - 1.06 AU

Year: 392 Days

Day: 25.7 Hours

Environment

Temp: 28 °C

Axial Tilt: 36.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 77,789,240 km

• M1: 142,567 km (0.113 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.48

Radius: 0.75

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.13 AU - 1.41 AU

Year: 536 Days

Day: 21.8 Hours

Environment

Temp: -25 °C

Axial Tilt: 3.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 77,789,240 km

• M1: 30,069 km (0.046 R)
• M2: 49,068 km (0.102 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.76

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.17 AU - 1.67 AU

Year: 634 Days

Day: 35.9 Hours

Environment

Temp: -45 °C

Axial Tilt: 21.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,789,240 km

• M1: 35,006 km (0.105 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.88

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 1.18 AU - 1.68 AU

Year: 641 Days

Day: 21 Hours

Environment

Temp: -42 °C

Axial Tilt: 12.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 2.27 AU - 2.39 AU

Year: 1333 Days

Day: 12.7 Hours

Environment

Temp: -96 °C

Axial Tilt: 12.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.2

Radius: 13.6

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 5.76 AU - 7.62 AU

Year: 6484 Days

Day: 8.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 77,789,240 km

• M1: 170,691 km (0.117 R)
• M2: 730,038 km (0.034 R)
• M3: 1,178,233 km (0.037 R)
• M4: 1,925,025 km (0.12 R)
• M5: 2,531,196 km (0.117 R)
• M6: 3,480,993 km (0.051 R)
• M7: 4,111,548 km (0.086 R)
• M8: 4,958,571 km (0.099 R)
• M9: 5,785,847 km (0.038 R)
• M10: 7,090,341 km (0.037 R)
• M11: 8,617,436 km (0.095 R)
• M12: 10,158,892 km (0.082 R)
• M13: 10,873,222 km (0.076 R)
• M14: 11,663,248 km (0.106 R)
• M15: 13,782,302 km (0.096 R)
• M16: 17,120,728 km (0.082 R)
• M17: 19,364,098 km (0.081 R)
• M18: 21,538,802 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 651.7

Radius: 6.8

Gravity: 14.09 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 11.45 AU - 17.21 AU

Year: 20328 Days

Day: 19.7 Hours

Environment

Temp: -183 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 77,789,240 km

• M1: 87,515 km (0.086 R)
• M2: 305,479 km (0.077 R)
• M3: 968,497 km (0.099 R)
• M4: 1,459,178 km (0.096 R)
• M5: 2,271,045 km (0.091 R)
• M6: 2,584,004 km (0.094 R)
• M7: 2,925,536 km (0.113 R)
• M8: 3,522,880 km (0.119 R)
• M9: 4,812,863 km (0.032 R)
• M10: 6,347,737 km (0.062 R)
• M11: 8,705,549 km (0.08 R)
• M12: 9,139,233 km (0.088 R)
• M13: 10,771,346 km (0.114 R)
• M14: 11,786,367 km (0.118 R)
• M15: 12,520,295 km (0.117 R)
• M16: 14,905,034 km (0.05 R)
• M17: 17,491,133 km (0.074 R)
• M18: 19,987,024 km (0.088 R)
• M19: 20,837,188 km (0.039 R)
• M20: 29,845,374 km (0.1 R)
• M21: 31,205,368 km (0.066 R)
• M22: 32,092,034 km (0.113 R)
• M23: 33,387,702 km (0.071 R)
• M24: 34,583,437 km (0.075 R)
• M25: 39,947,269 km (0.115 R)
• M26: 41,749,774 km (0.119 R)
• M27: 47,315,862 km (0.105 R)
• M28: 48,992,555 km (0.082 R)
• M29: 50,362,123 km (0.048 R)
• M30: 50,708,592 km (0.118 R)
• M31: 54,623,867 km (0.096 R)
• M32: 55,725,656 km (0.064 R)
• M33: 57,405,939 km (0.066 R)
• M34: 59,312,265 km (0.102 R)
• M35: 60,281,060 km (0.104 R)
• M36: 64,873,715 km (0.12 R)
• M37: 67,360,032 km (0.06 R)
• M38: 72,301,698 km (0.118 R)
• M39: 73,629,529 km (0.093 R)
• M40: 75,198,960 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 663.1

Radius: 7.8

Gravity: 10.9 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 12.13 AU - 17.17 AU

Year: 21013 Days

Day: 23.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 77,789,240 km

• M1: 96,939 km (0.035 R)
• M2: 557,701 km (0.098 R)
• M3: 1,144,424 km (0.1 R)
• M4: 1,415,794 km (0.075 R)
• M5: 2,173,807 km (0.088 R)
• M6: 2,788,654 km (0.086 R)
• M7: 3,204,835 km (0.082 R)
• M8: 3,602,317 km (0.109 R)
• M9: 4,530,572 km (0.084 R)
• M10: 6,274,135 km (0.114 R)
• M11: 6,805,806 km (0.06 R)
• M12: 8,851,257 km (0.076 R)
• M13: 9,463,113 km (0.107 R)
• M14: 10,958,194 km (0.076 R)
• M15: 13,164,613 km (0.115 R)
• M16: 15,099,362 km (0.06 R)
• M17: 20,178,509 km (0.117 R)
• M18: 20,559,235 km (0.111 R)
• M19: 22,534,825 km (0.1 R)
• M20: 23,359,408 km (0.074 R)
• M21: 23,991,011 km (0.071 R)
• M22: 25,068,714 km (0.109 R)
• M23: 29,095,439 km (0.088 R)
• M24: 30,072,912 km (0.071 R)
• M25: 35,428,067 km (0.087 R)
• M26: 38,547,931 km (0.119 R)
• M27: 44,520,476 km (0.093 R)
• M28: 45,003,827 km (0.085 R)
• M29: 46,640,577 km (0.071 R)
• M30: 47,978,281 km (0.108 R)
• M31: 49,169,679 km (0.066 R)
• M32: 51,611,265 km (0.119 R)
• M33: 52,144,731 km (0.104 R)
• M34: 52,502,420 km (0.083 R)
• M35: 57,874,928 km (0.103 R)
• M36: 62,993,270 km (0.072 R)
• M37: 66,079,324 km (0.086 R)
• M38: 71,664,561 km (0.074 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 375 - 12,632 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit