🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.76

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.49 AU - 0.69 AU

Year: 288 Days

Day: 19.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.3

Radius: 11.8

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.73 AU - 0.77 AU

Year: 413 Days

Day: 12.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,189,507 km

• M1: 146,756 km (0.057 R)
• M2: 544,686 km (0.05 R)
• M3: 946,655 km (0.062 R)
• M4: 1,415,196 km (0.077 R)
• M5: 1,854,116 km (0.12 R)
• M6: 2,500,229 km (0.053 R)
• M7: 3,040,726 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.6

Radius: 13.9

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.95 AU - 1.05 AU

Year: 636 Days

Day: 14.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,189,507 km

• M1: 173,085 km (0.106 R)
• M2: 712,235 km (0.025 R)
• M3: 1,202,468 km (0.106 R)
• M4: 1,816,717 km (0.078 R)
• M5: 2,323,405 km (0.085 R)
• M6: 3,055,088 km (0.115 R)
• M7: 3,542,926 km (0.074 R)
• M8: 4,401,618 km (0.119 R)
• M9: 5,027,536 km (0.062 R)
• M10: 5,593,913 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.8

Radius: 10.2

Gravity: 8.47 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.19 AU - 1.21 AU

Year: 836 Days

Day: 10.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,189,507 km

• M1: 132,843 km (0.103 R)
• M2: 486,791 km (0.07 R)
• M3: 804,837 km (0.118 R)
• M4: 1,305,541 km (0.059 R)
• M5: 3,429,232 km (0.069 R)
• M6: 3,938,014 km (0.092 R)
• M7: 5,125,821 km (0.117 R)
• M8: 6,041,061 km (0.055 R)
• M9: 6,739,534 km (0.118 R)
• M10: 7,491,113 km (0.086 R)
• M11: 8,064,971 km (0.095 R)
• M12: 8,830,164 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.4

Radius: 14.7

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.36 AU - 2 AU

Year: 1385 Days

Day: 14.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,189,507 km

• M1: 210,035 km (0.116 R)
• M2: 971,339 km (0.038 R)
• M3: 2,245,763 km (0.107 R)
• M4: 2,833,832 km (0.071 R)
• M5: 3,548,312 km (0.118 R)
• M6: 4,408,799 km (0.098 R)
• M7: 4,874,198 km (0.093 R)
• M8: 5,751,739 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 994.6

Radius: 12.9

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 3.22 AU - 3.32 AU

Year: 3760 Days

Day: 9.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 52,189,507 km

• M1: 160,369 km (0.096 R)
• M2: 621,130 km (0.099 R)
• M3: 1,030,729 km (0.026 R)
• M4: 1,690,905 km (0.085 R)
• M5: 2,169,768 km (0.04 R)
• M6: 2,588,043 km (0.1 R)
• M7: 3,407,540 km (0.114 R)
• M8: 4,298,695 km (0.098 R)
• M9: 5,817,712 km (0.118 R)
• M10: 6,447,967 km (0.084 R)
• M11: 7,324,910 km (0.08 R)
• M12: 8,206,341 km (0.118 R)
• M13: 8,691,935 km (0.102 R)
• M14: 9,721,019 km (0.108 R)
• M15: 11,691,822 km (0.1 R)
• M16: 12,356,036 km (0.069 R)
• M17: 13,348,468 km (0.113 R)
• M18: 15,156,658 km (0.08 R)
• M19: 16,119,619 km (0.097 R)
• M20: 17,183,111 km (0.11 R)
• M21: 18,104,783 km (0.097 R)
• M22: 19,581,613 km (0.061 R)
• M23: 23,436,750 km (0.085 R)
• M24: 24,416,916 km (0.085 R)
• M25: 25,189,439 km (0.093 R)
• M26: 25,739,810 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 125.2

Radius: 11.9

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 3.16 AU - 3.58 AU

Year: 3933 Days

Day: 13.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,189,507 km

• M1: 147,952 km (0.081 R)
• M2: 762,500 km (0.092 R)
• M3: 1,242,111 km (0.099 R)
• M4: 1,786,947 km (0.109 R)
• M5: 3,445,239 km (0.041 R)
• M6: 4,379,926 km (0.072 R)
• M7: 5,170,252 km (0.12 R)
• M8: 6,197,690 km (0.061 R)
• M9: 8,235,512 km (0.037 R)
• M10: 8,624,317 km (0.092 R)
• M11: 9,536,266 km (0.096 R)
• M12: 10,235,935 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 693.1

Radius: 8.7

Gravity: 9.16 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 3.29 AU - 3.59 AU

Year: 4057 Days

Day: 6.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,189,507 km

• M1: 108,159 km (0.117 R)
• M2: 1,323,343 km (0.087 R)
• M3: 1,789,041 km (0.113 R)
• M4: 2,360,654 km (0.118 R)
• M5: 2,765,765 km (0.117 R)
• M6: 3,235,952 km (0.08 R)
• M7: 3,551,005 km (0.075 R)
• M8: 5,179,377 km (0.099 R)
• M9: 7,488,121 km (0.042 R)
• M10: 12,004,481 km (0.106 R)
• M11: 14,747,807 km (0.087 R)
• M12: 17,641,479 km (0.08 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 37.5

Radius: 13.3

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 4.68 AU - 6.36 AU

Year: 8246 Days

Day: 6.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,189,507 km

• M1: 200,162 km (0.109 R)
• M2: 750,233 km (0.094 R)
• M3: 1,171,501 km (0.105 R)
• M4: 1,939,088 km (0.093 R)
• M5: 2,645,638 km (0.089 R)
• M6: 3,287,862 km (0.026 R)
• M7: 3,976,910 km (0.098 R)
• M8: 4,802,391 km (0.102 R)
• M9: 5,278,710 km (0.06 R)
• M10: 6,874,321 km (0.102 R)
• M11: 10,099,951 km (0.105 R)
• M12: 11,032,993 km (0.101 R)
• M13: 12,579,685 km (0.082 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 348.7

Radius: 3.4

Gravity: 30.16 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 7.11 AU - 10.01 AU

Year: 15924 Days

Day: 23.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,189,507 km

• M1: 43,383 km (0.07 R)
• M2: 272,268 km (0.119 R)
• M3: 612,902 km (0.109 R)
• M4: 772,224 km (0.057 R)
• M5: 1,551,180 km (0.084 R)
• M6: 2,258,928 km (0.108 R)
• M7: 4,424,058 km (0.112 R)
• M8: 4,637,534 km (0.087 R)
• M9: 7,761,886 km (0.105 R)
• M10: 8,253,614 km (0.115 R)
• M11: 8,670,992 km (0.071 R)
• M12: 9,852,815 km (0.053 R)
• M13: 10,164,278 km (0.114 R)
• M14: 12,410,340 km (0.078 R)
• M15: 13,206,051 km (0.085 R)
• M16: 13,520,955 km (0.119 R)
• M17: 19,103,498 km (0.075 R)
• M18: 22,130,013 km (0.08 R)
• M19: 24,979,703 km (0.026 R)
• M20: 26,343,138 km (0.077 R)
• M21: 29,111,297 km (0.08 R)
• M22: 29,323,726 km (0.086 R)
• M23: 32,979,898 km (0.101 R)
• M24: 41,180,703 km (0.046 R)
• M25: 41,582,673 km (0.067 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 405 - 19,665 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit