🌌 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: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.53 AU - 0.53 AU

Year: 178 Days

Day: 15.7 Hours

Environment

Temp: 15 °C

Axial Tilt: 26.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.1

Radius: 1.04

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.56 AU - 0.66 AU

Year: 219 Days

Day: 41 Hours

Environment

Temp: -9 °C

Axial Tilt: 8.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.57 AU - 0.91 AU

Year: 293 Days

Day: 46.8 Hours

Environment

Temp: -43 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.74

Radius: 0.89

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.31 AU - 1.73 AU

Year: 862 Days

Day: 40.6 Hours

Environment

Temp: -117 °C

Axial Tilt: 39 °

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: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.96 AU - 2.02 AU

Year: 1292 Days

Day: 40.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 2.53 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 871.3

Radius: 8.5

Gravity: 12.06 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 2.3 AU - 3.84 AU

Year: 2475 Days

Day: 7.4 Hours

Environment

Temp: -148 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,663,675 km

• M1: 105,766 km (0.092 R)
• M2: 397,930 km (0.069 R)
• M3: 1,370,616 km (0.03 R)
• M4: 1,876,556 km (0.117 R)
• M5: 2,166,925 km (0.102 R)
• M6: 3,019,633 km (0.115 R)
• M7: 3,402,903 km (0.115 R)
• M8: 3,877,876 km (0.102 R)
• M9: 5,345,730 km (0.113 R)
• M10: 5,673,649 km (0.042 R)
• M11: 6,231,798 km (0.114 R)
• M12: 8,062,128 km (0.096 R)
• M13: 8,460,358 km (0.11 R)
• M14: 8,871,752 km (0.103 R)
• M15: 9,550,328 km (0.109 R)
• M16: 11,051,244 km (0.098 R)
• M17: 13,939,081 km (0.059 R)
• M18: 15,103,401 km (0.094 R)
• M19: 16,070,252 km (0.098 R)
• M20: 18,239,421 km (0.06 R)
• M21: 19,512,200 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.1

Radius: 10.7

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 2.9 AU - 4 AU

Year: 2949 Days

Day: 10.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,663,675 km

• M1: 133,142 km (0.048 R)
• M2: 643,869 km (0.116 R)
• M3: 1,018,612 km (0.068 R)
• M4: 1,602,193 km (0.056 R)
• M5: 2,078,812 km (0.076 R)
• M6: 2,563,210 km (0.089 R)
• M7: 6,285,654 km (0.074 R)
• M8: 6,962,584 km (0.081 R)
• M9: 7,362,609 km (0.07 R)
• M10: 9,253,675 km (0.097 R)
• M11: 9,950,502 km (0.119 R)
• M12: 10,348,582 km (0.106 R)
• M13: 12,625,611 km (0.081 R)
• M14: 14,887,830 km (0.04 R)
• M15: 15,601,712 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 675.3

Radius: 4.6

Gravity: 31.91 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 9.94 AU - 12.64 AU

Year: 17457 Days

Day: 15.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 40,663,675 km

• M1: 57,446 km (0.078 R)
• M2: 205,547 km (0.107 R)
• M3: 384,915 km (0.109 R)
• M4: 635,342 km (0.086 R)
• M5: 887,115 km (0.092 R)
• M6: 2,176,350 km (0.07 R)
• M7: 5,213,785 km (0.077 R)
• M8: 5,864,087 km (0.074 R)
• M9: 6,566,748 km (0.105 R)
• M10: 7,370,238 km (0.119 R)
• M11: 8,187,491 km (0.113 R)
• M12: 8,388,252 km (0.076 R)
• M13: 11,680,602 km (0.102 R)
• M14: 13,332,461 km (0.079 R)
• M15: 15,284,714 km (0.071 R)
• M16: 15,820,274 km (0.063 R)
• M17: 18,860,851 km (0.106 R)
• M18: 21,122,172 km (0.075 R)
• M19: 21,882,429 km (0.047 R)
• M20: 22,366,677 km (0.07 R)
• M21: 25,105,963 km (0.073 R)
• M22: 26,392,056 km (0.082 R)
• M23: 28,060,671 km (0.092 R)
• M24: 30,273,523 km (0.111 R)
• M25: 32,725,731 km (0.058 R)
• M26: 35,572,429 km (0.105 R)
• M27: 39,286,196 km (0.068 R)
• M28: 40,001,274 km (0.088 R)
• M29: 40,434,360 km (0.115 R)
• M30: 42,947,903 km (0.118 R)
• M31: 45,563,771 km (0.117 R)
• M32: 46,036,202 km (0.083 R)
• M33: 46,830,716 km (0.095 R)
• M34: 48,610,930 km (0.07 R)
• M35: 51,790,932 km (0.098 R)
• M36: 52,305,400 km (0.093 R)
• M37: 59,120,181 km (0.037 R)
• M38: 60,626,482 km (0.118 R)
• M39: 63,323,731 km (0.095 R)
• M40: 68,956,241 km (0.12 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 670.5

Radius: 3

Gravity: 74.5 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 10.62 AU - 13.66 AU

Year: 19465 Days

Day: 18.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 40,663,675 km

• M1: 37,399 km (0.113 R)
• M2: 448,494 km (0.086 R)
• M3: 837,748 km (0.098 R)
• M4: 1,613,413 km (0.107 R)
• M5: 3,189,576 km (0.114 R)
• M6: 3,947,888 km (0.112 R)
• M7: 4,302,285 km (0.094 R)
• M8: 5,148,261 km (0.118 R)
• M9: 6,183,478 km (0.115 R)
• M10: 7,397,615 km (0.104 R)
• M11: 7,638,617 km (0.098 R)
• M12: 7,984,786 km (0.098 R)
• M13: 8,136,329 km (0.087 R)
• M14: 8,445,249 km (0.09 R)
• M15: 8,922,915 km (0.094 R)
• M16: 10,344,543 km (0.098 R)
• M17: 17,455,528 km (0.085 R)
• M18: 19,204,926 km (0.098 R)
• M19: 22,541,258 km (0.078 R)
• M20: 25,255,561 km (0.053 R)
• M21: 30,209,345 km (0.119 R)
• M22: 33,106,906 km (0.072 R)
• M23: 35,093,267 km (0.088 R)
• M24: 39,010,936 km (0.096 R)
• M25: 42,286,082 km (0.112 R)
• M26: 42,439,121 km (0.085 R)
• M27: 43,990,151 km (0.11 R)
• M28: 44,938,752 km (0.094 R)
• M29: 58,159,613 km (0.075 R)
• M30: 60,264,754 km (0.063 R)
• M31: 65,851,487 km (0.104 R)
• M32: 66,263,330 km (0.113 R)
• M33: 69,406,381 km (0.091 R)
• M34: 73,307,594 km (0.116 R)
• M35: 73,528,550 km (0.092 R)

Planet 10 - Ice Giant

Semi-Major Axis: 15.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 54.5

Radius: 5.9

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 12.92 AU - 17.8 AU

Year: 27702 Days

Day: 20.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,663,675 km

• M1: 73,453 km (0.07 R)
• M2: 499,657 km (0.038 R)
• M3: 1,858,754 km (0.105 R)
• M4: 8,367,458 km (0.096 R)
• M5: 8,710,037 km (0.088 R)
• M6: 12,501,445 km (0.084 R)
• M7: 14,785,954 km (0.11 R)
• M8: 19,633,374 km (0.091 R)
• M9: 28,208,773 km (0.102 R)
• M10: 29,173,230 km (0.027 R)
• M11: 30,761,960 km (0.089 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 316 - 11,571 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit