🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.21

Radius: 1.08

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.47 AU - 0.61 AU

Year: 252 Days

Day: 20.9 Hours

Environment

Temp: -124 °C

Axial Tilt: 3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,809,877 km

• M1: 25,282 km (0.084 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 364

Radius: 12.3

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.64 AU - 0.94 AU

Year: 446 Days

Day: 13.1 Hours

Environment

Temp: -138 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,809,877 km

• M1: 153,039 km (0.098 R)
• M2: 542,591 km (0.095 R)
• M3: 966,402 km (0.083 R)
• M4: 1,446,761 km (0.095 R)
• M5: 1,890,319 km (0.109 R)
• M6: 2,322,208 km (0.1 R)
• M7: 3,080,220 km (0.051 R)
• M8: 3,672,777 km (0.116 R)
• M9: 4,566,924 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.4

Radius: 9.2

Gravity: 10.52 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.85 AU - 0.99 AU

Year: 561 Days

Day: 7 Hours

Environment

Temp: -159 °C

Axial Tilt: 161.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,809,877 km

• M1: 114,442 km (0.069 R)
• M2: 601,383 km (0.106 R)
• M3: 1,330,224 km (0.071 R)
• M4: 1,681,330 km (0.062 R)
• M5: 2,385,787 km (0.049 R)
• M6: 3,313,294 km (0.055 R)
• M7: 4,024,781 km (0.072 R)
• M8: 4,339,685 km (0.119 R)
• M9: 4,736,119 km (0.103 R)
• M10: 5,053,416 km (0.118 R)
• M11: 6,053,029 km (0.088 R)
• M12: 7,621,413 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 20.7

Radius: 10.9

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.85 AU - 0.99 AU

Year: 561 Days

Day: 12.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 96.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 39,809,877 km

• M1: 135,536 km (0.104 R)
• M2: 701,913 km (0.082 R)
• M3: 1,061,696 km (0.057 R)
• M4: 1,539,063 km (0.091 R)
• M5: 2,032,137 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.2

Radius: 9.5

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.13 AU - 1.85 AU

Year: 1156 Days

Day: 12.7 Hours

Environment

Temp: -186 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,809,877 km

• M1: 118,182 km (0.082 R)
• M2: 453,132 km (0.1 R)
• M3: 989,740 km (0.117 R)
• M4: 1,412,653 km (0.109 R)
• M5: 1,715,439 km (0.099 R)
• M6: 3,465,584 km (0.116 R)
• M7: 4,072,802 km (0.074 R)
• M8: 5,323,739 km (0.11 R)
• M9: 6,217,886 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 173

Radius: 9.1

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.59 AU - 2.51 AU

Year: 1866 Days

Day: 10.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 39,809,877 km

• M1: 113,395 km (0.106 R)
• M2: 521,797 km (0.067 R)
• M3: 1,611,019 km (0.052 R)
• M4: 2,142,541 km (0.098 R)
• M5: 2,455,649 km (0.102 R)
• M6: 2,774,592 km (0.069 R)
• M7: 3,410,981 km (0.099 R)
• M8: 4,881,079 km (0.116 R)
• M9: 6,162,684 km (0.111 R)
• M10: 7,363,207 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.1

Radius: 8.4

Gravity: 10.6 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 2.89 AU - 3.51 AU

Year: 3640 Days

Day: 12.9 Hours

Environment

Temp: -201 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 39,809,877 km

• M1: 104,419 km (0.106 R)
• M2: 464,053 km (0.073 R)
• M3: 836,701 km (0.111 R)
• M4: 1,169,706 km (0.077 R)
• M5: 1,696,141 km (0.088 R)
• M6: 2,342,553 km (0.078 R)
• M7: 3,813,998 km (0.101 R)
• M8: 4,672,241 km (0.063 R)
• M9: 4,943,312 km (0.112 R)
• M10: 8,997,564 km (0.118 R)
• M11: 10,633,865 km (0.101 R)
• M12: 11,148,033 km (0.099 R)
• M13: 11,544,468 km (0.084 R)
• M14: 12,982,552 km (0.104 R)
• M15: 14,745,563 km (0.092 R)
• M16: 15,009,902 km (0.064 R)
• M17: 15,439,248 km (0.104 R)
• M18: 15,876,822 km (0.116 R)
• M19: 16,210,425 km (0.107 R)
• M20: 16,662,510 km (0.066 R)
• M21: 17,064,928 km (0.119 R)
• M22: 17,889,362 km (0.118 R)
• M23: 19,363,799 km (0.048 R)
• M24: 21,725,052 km (0.09 R)
• M25: 22,205,410 km (0.067 R)
• M26: 22,552,926 km (0.093 R)
• M27: 24,271,656 km (0.069 R)
• M28: 25,012,914 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.9

Radius: 14.8

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 4.09 AU - 5.49 AU

Year: 6666 Days

Day: 6.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 39,809,877 km

• M1: 184,155 km (0.072 R)
• M2: 719,566 km (0.06 R)
• M3: 1,351,916 km (0.096 R)
• M4: 2,036,027 km (0.078 R)
• M5: 2,792,693 km (0.079 R)
• M6: 3,617,725 km (0.085 R)
• M7: 6,501,972 km (0.095 R)
• M8: 7,059,075 km (0.057 R)
• M9: 7,800,482 km (0.029 R)
• M10: 9,051,718 km (0.047 R)
• M11: 10,621,299 km (0.094 R)
• M12: 11,199,196 km (0.08 R)
• M13: 13,114,647 km (0.046 R)
• M14: 14,007,297 km (0.047 R)
• M15: 14,585,643 km (0.067 R)
• M16: 19,021,220 km (0.102 R)
• M17: 20,384,954 km (0.034 R)
• M18: 21,053,357 km (0.098 R)
• M19: 23,066,645 km (0.06 R)
• M20: 24,202,392 km (0.026 R)
• M21: 25,975,576 km (0.112 R)
• M22: 28,472,813 km (0.105 R)
• M23: 30,834,365 km (0.102 R)
• M24: 31,616,762 km (0.081 R)
• M25: 32,815,340 km (0.1 R)
• M26: 35,729,806 km (0.102 R)

Asteroid Belt

Center: 7.13 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 9.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 114.3

Radius: 3.6

Gravity: 8.82 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 9.42 AU - 9.52 AU

Year: 18529 Days

Day: 19.8 Hours

Environment

Temp: -226 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 39,809,877 km

• M1: 45,328 km (0.063 R)
• M2: 917,633 km (0.049 R)
• M3: 1,161,927 km (0.103 R)
• M4: 1,447,958 km (0.077 R)
• M5: 1,869,375 km (0.05 R)
• M6: 3,790,511 km (0.111 R)
• M7: 4,042,882 km (0.044 R)
• M8: 5,135,695 km (0.049 R)
• M9: 5,539,908 km (0.097 R)
• M10: 7,141,054 km (0.043 R)
• M11: 7,763,381 km (0.112 R)
• M12: 13,684,166 km (0.101 R)
• M13: 14,458,335 km (0.074 R)
• M14: 16,686,894 km (0.1 R)
• M15: 17,158,427 km (0.118 R)
• M16: 17,294,860 km (0.04 R)
• M17: 17,847,475 km (0.119 R)
• M18: 19,280,622 km (0.085 R)
• M19: 19,799,727 km (0.115 R)
• M20: 21,021,493 km (0.109 R)
• M21: 22,864,239 km (0.086 R)
• M22: 24,037,087 km (0.117 R)
• M23: 26,959,182 km (0.098 R)
• M24: 28,937,015 km (0.119 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: 351 - 18,298 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit