🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.53 AU - 0.65 AU

Year: 174 Days

Day: 32.8 Hours

Environment

Temp: 118 °C

Axial Tilt: 22.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.58 AU - 0.72 AU

Year: 202 Days

Day: 39.6 Hours

Environment

Temp: 167 °C

Axial Tilt: 27.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.6 AU - 0.84 AU

Year: 235 Days

Day: 43 Hours

Environment

Temp: 79 °C

Axial Tilt: 26.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 72,477,287 km

• M1: 202,406 km (0.064 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.06

Radius: 1.56

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 1.42 AU - 1.78 AU

Year: 779 Days

Day: 18.6 Hours

Environment

Temp: -67 °C

Axial Tilt: 38.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,477,287 km

• M1: 75,098 km (0.083 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.58

Radius: 1.67

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.47 AU - 1.83 AU

Year: 816 Days

Day: 31.5 Hours

Environment

Temp: -61 °C

Axial Tilt: 8.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 744

Radius: 12.2

Gravity: 5 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 3.66 AU - 4.44 AU

Year: 3138 Days

Day: 9.8 Hours

Environment

Temp: -130 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 72,477,287 km

• M1: 151,692 km (0.102 R)
• M2: 642,523 km (0.104 R)
• M3: 1,232,836 km (0.083 R)
• M4: 1,720,824 km (0.098 R)
• M5: 2,604,649 km (0.119 R)
• M6: 3,690,729 km (0.086 R)
• M7: 4,142,066 km (0.068 R)
• M8: 4,864,624 km (0.084 R)
• M9: 6,358,508 km (0.082 R)
• M10: 7,416,015 km (0.085 R)
• M11: 7,804,521 km (0.069 R)
• M12: 9,162,421 km (0.102 R)
• M13: 9,917,142 km (0.094 R)
• M14: 10,429,515 km (0.107 R)
• M15: 11,210,416 km (0.116 R)
• M16: 11,810,303 km (0.09 R)
• M17: 12,341,525 km (0.111 R)
• M18: 16,463,395 km (0.097 R)
• M19: 17,808,131 km (0.113 R)
• M20: 19,103,798 km (0.101 R)
• M21: 20,651,537 km (0.092 R)
• M22: 22,348,127 km (0.078 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.4

Radius: 10.1

Gravity: 2.92 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 3.9 AU - 5.24 AU

Year: 3761 Days

Day: 7.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,477,287 km

• M1: 130,749 km (0.066 R)
• M2: 1,248,544 km (0.114 R)
• M3: 2,190,262 km (0.115 R)
• M4: 2,752,002 km (0.117 R)
• M5: 3,641,511 km (0.095 R)
• M6: 5,143,324 km (0.087 R)
• M7: 5,502,210 km (0.066 R)
• M8: 8,669,047 km (0.1 R)
• M9: 11,785,619 km (0.063 R)
• M10: 14,946,323 km (0.063 R)
• M11: 15,383,598 km (0.104 R)
• M12: 17,970,444 km (0.103 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.3

Radius: 13.8

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 5.03 AU - 6.45 AU

Year: 5295 Days

Day: 5.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 72,477,287 km

• M1: 171,589 km (0.117 R)
• M2: 830,717 km (0.099 R)
• M3: 2,290,942 km (0.12 R)
• M4: 3,565,964 km (0.063 R)
• M5: 4,091,502 km (0.068 R)
• M6: 5,955,940 km (0.1 R)
• M7: 6,972,607 km (0.08 R)
• M8: 7,874,383 km (0.044 R)
• M9: 10,492,346 km (0.097 R)
• M10: 11,481,337 km (0.072 R)
• M11: 12,124,159 km (0.117 R)
• M12: 13,266,638 km (0.115 R)
• M13: 15,348,592 km (0.105 R)
• M14: 16,374,684 km (0.052 R)
• M15: 17,900,732 km (0.102 R)
• M16: 19,658,955 km (0.081 R)
• M17: 22,204,064 km (0.043 R)
• M18: 22,738,278 km (0.043 R)
• M19: 23,595,175 km (0.117 R)
• M20: 24,231,863 km (0.108 R)
• M21: 24,961,751 km (0.055 R)
• M22: 27,326,445 km (0.1 R)
• M23: 28,473,711 km (0.094 R)
• M24: 28,923,402 km (0.109 R)
• M25: 31,053,526 km (0.113 R)
• M26: 32,205,430 km (0.091 R)
• M27: 33,088,057 km (0.119 R)

Planet 9 - Gas Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 884

Radius: 14.2

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 5.56 AU - 8.78 AU

Year: 7392 Days

Day: 10.4 Hours

Environment

Temp: -176 °C

Axial Tilt: 62.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 72,477,287 km

• M1: 176,525 km (0.107 R)
• M2: 629,059 km (0.107 R)
• M3: 1,212,790 km (0.101 R)
• M4: 1,745,508 km (0.116 R)
• M5: 2,453,106 km (0.106 R)
• M6: 2,957,400 km (0.119 R)
• M7: 4,312,009 km (0.072 R)
• M8: 6,047,793 km (0.072 R)
• M9: 8,211,577 km (0.091 R)
• M10: 9,867,775 km (0.118 R)
• M11: 15,837,179 km (0.031 R)
• M12: 16,434,373 km (0.12 R)
• M13: 17,046,528 km (0.104 R)
• M14: 18,461,424 km (0.072 R)
• M15: 20,572,250 km (0.115 R)
• M16: 21,363,623 km (0.059 R)
• M17: 22,422,776 km (0.096 R)
• M18: 24,645,800 km (0.071 R)
• M19: 27,106,237 km (0.082 R)
• M20: 29,129,997 km (0.083 R)
• M21: 31,564,104 km (0.036 R)
• M22: 36,145,239 km (0.095 R)
• M23: 36,949,627 km (0.103 R)
• M24: 37,648,548 km (0.108 R)
• M25: 39,193,296 km (0.073 R)
• M26: 41,027,515 km (0.105 R)
• M27: 42,281,893 km (0.047 R)

Planet 10 - Ice Giant

Semi-Major Axis: 15.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 420

Radius: 3.2

Gravity: 41.02 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 14.22 AU - 17 AU

Year: 23745 Days

Day: 19.7 Hours

Environment

Temp: -206 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 72,477,287 km

• M1: 39,943 km (0.097 R)
• M2: 284,236 km (0.105 R)
• M3: 790,326 km (0.09 R)
• M4: 1,579,305 km (0.098 R)
• M5: 1,699,133 km (0.071 R)
• M6: 3,172,223 km (0.118 R)
• M7: 5,179,826 km (0.118 R)
• M8: 5,561,301 km (0.1 R)
• M9: 6,509,452 km (0.098 R)
• M10: 7,512,506 km (0.117 R)
• M11: 9,368,866 km (0.035 R)
• M12: 11,008,309 km (0.098 R)
• M13: 16,562,728 km (0.091 R)
• M14: 28,103,606 km (0.12 R)
• M15: 28,451,421 km (0.118 R)
• M16: 31,214,643 km (0.094 R)
• M17: 32,597,226 km (0.034 R)
• M18: 41,608,553 km (0.052 R)
• M19: 45,474,162 km (0.116 R)
• M20: 48,235,290 km (0.119 R)
• M21: 54,088,457 km (0.082 R)
• M22: 65,743,477 km (0.111 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: 394 - 17,439 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit