🌌 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: 2.48

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.43 AU - 0.63 AU

Year: 249 Days

Day: 39.7 Hours

Environment

Temp: -120 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 35,614,137 km

• M1: 40,391 km (0.119 R)
• M2: 73,004 km (0.085 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.44

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.52 AU - 0.82 AU

Year: 354 Days

Day: 29.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 14.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512.6

Radius: 11.3

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.65 AU - 0.95 AU

Year: 462 Days

Day: 8.8 Hours

Environment

Temp: -155 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 35,614,137 km

• M1: 140,622 km (0.113 R)
• M2: 522,545 km (0.059 R)
• M3: 1,024,745 km (0.113 R)
• M4: 1,725,312 km (0.055 R)
• M5: 2,463,578 km (0.071 R)
• M6: 2,990,162 km (0.045 R)
• M7: 3,700,603 km (0.068 R)
• M8: 4,548,523 km (0.105 R)
• M9: 4,988,640 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136.1

Radius: 12.5

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.86 AU - 1.06 AU

Year: 607 Days

Day: 14.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,614,137 km

• M1: 155,432 km (0.11 R)
• M2: 654,640 km (0.107 R)
• M3: 1,353,113 km (0.046 R)
• M4: 1,789,490 km (0.106 R)
• M5: 2,607,042 km (0.11 R)
• M6: 3,615,781 km (0.066 R)
• M7: 4,259,351 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 932.6

Radius: 11.3

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.71 AU - 2.01 AU

Year: 1638 Days

Day: 7.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 35,614,137 km

• M1: 140,622 km (0.117 R)
• M2: 557,701 km (0.062 R)
• M3: 1,557,912 km (0.038 R)
• M4: 2,122,794 km (0.091 R)
• M5: 2,806,306 km (0.09 R)
• M6: 3,232,062 km (0.118 R)
• M7: 4,081,927 km (0.096 R)
• M8: 4,489,432 km (0.079 R)
• M9: 4,945,406 km (0.032 R)
• M10: 5,640,438 km (0.072 R)
• M11: 5,999,473 km (0.102 R)
• M12: 6,450,660 km (0.087 R)
• M13: 7,005,519 km (0.088 R)
• M14: 7,534,946 km (0.115 R)
• M15: 7,971,472 km (0.12 R)
• M16: 11,029,701 km (0.049 R)
• M17: 12,255,506 km (0.093 R)
• M18: 13,612,658 km (0.075 R)
• M19: 15,250,605 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 925.8

Radius: 8.3

Gravity: 13.44 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.88 AU - 3.42 AU

Year: 3610 Days

Day: 12 Hours

Environment

Temp: -199 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 35,614,137 km

• M1: 104,419 km (0.103 R)
• M2: 516,412 km (0.112 R)
• M3: 1,211,892 km (0.111 R)
• M4: 1,571,825 km (0.058 R)
• M5: 2,186,971 km (0.118 R)
• M6: 2,591,185 km (0.113 R)
• M7: 4,020,592 km (0.084 R)
• M8: 4,956,177 km (0.101 R)
• M9: 5,712,694 km (0.054 R)
• M10: 6,389,774 km (0.098 R)
• M11: 7,218,546 km (0.038 R)
• M12: 7,521,482 km (0.09 R)
• M13: 8,371,198 km (0.072 R)
• M14: 8,668,149 km (0.089 R)
• M15: 9,521,456 km (0.094 R)
• M16: 11,349,392 km (0.071 R)
• M17: 12,085,563 km (0.049 R)
• M18: 12,513,413 km (0.047 R)
• M19: 13,450,045 km (0.09 R)
• M20: 13,755,225 km (0.099 R)
• M21: 15,296,382 km (0.117 R)
• M22: 18,280,261 km (0.109 R)
• M23: 19,420,048 km (0.042 R)
• M24: 21,012,367 km (0.047 R)
• M25: 25,681,167 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.1

Radius: 12.2

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 3.69 AU - 4.13 AU

Year: 4992 Days

Day: 9.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 95.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 35,614,137 km

• M1: 151,692 km (0.079 R)
• M2: 552,465 km (0.095 R)
• M3: 944,561 km (0.098 R)
• M4: 1,523,505 km (0.079 R)
• M5: 2,091,229 km (0.119 R)
• M6: 3,044,616 km (0.109 R)
• M7: 3,513,755 km (0.107 R)
• M8: 3,954,171 km (0.102 R)
• M9: 4,749,134 km (0.076 R)
• M10: 7,511,309 km (0.116 R)
• M11: 13,574,062 km (0.097 R)
• M12: 14,203,869 km (0.062 R)
• M13: 14,665,528 km (0.088 R)
• M14: 15,089,638 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 258.3

Radius: 7.9

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 5.05 AU - 7.73 AU

Year: 10430 Days

Day: 20.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 35,614,137 km

• M1: 98,585 km (0.06 R)
• M2: 386,710 km (0.07 R)
• M3: 1,000,810 km (0.109 R)
• M4: 1,673,851 km (0.069 R)
• M5: 2,016,430 km (0.064 R)
• M6: 4,302,285 km (0.12 R)
• M7: 9,584,137 km (0.07 R)
• M8: 10,032,931 km (0.104 R)
• M9: 11,265,617 km (0.043 R)
• M10: 11,816,287 km (0.025 R)
• M11: 13,134,843 km (0.074 R)
• M12: 14,724,769 km (0.117 R)
• M13: 15,688,927 km (0.11 R)
• M14: 17,213,030 km (0.071 R)
• M15: 22,141,233 km (0.052 R)
• M16: 33,321,280 km (0.084 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 12,932 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit