🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.63 AU - 0.67 AU

Year: 333 Days

Day: 13.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 322.7

Radius: 13.5

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.58 AU - 0.82 AU

Year: 372 Days

Day: 11 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,177,349 km

• M1: 167,849 km (0.115 R)
• M2: 651,948 km (0.092 R)
• M3: 1,078,301 km (0.096 R)
• M4: 1,602,343 km (0.108 R)
• M5: 2,091,229 km (0.082 R)
• M6: 2,636,214 km (0.109 R)
• M7: 3,165,641 km (0.063 R)
• M8: 3,622,363 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.2

Radius: 13.8

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.76 AU - 1.06 AU

Year: 552 Days

Day: 14.9 Hours

Environment

Temp: -150 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 42,177,349 km

• M1: 173,833 km (0.113 R)
• M2: 637,137 km (0.108 R)
• M3: 1,409,511 km (0.047 R)
• M4: 2,360,654 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 255.2

Radius: 14.8

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.71 AU - 1.13 AU

Year: 561 Days

Day: 13.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 101.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 42,177,349 km

• M1: 184,753 km (0.113 R)
• M2: 689,796 km (0.074 R)
• M3: 1,912,609 km (0.119 R)
• M4: 2,928,977 km (0.04 R)
• M5: 5,025,740 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334.4

Radius: 14.3

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.87 AU - 1.09 AU

Year: 617 Days

Day: 6.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 42,177,349 km

• M1: 177,872 km (0.109 R)
• M2: 730,486 km (0.114 R)
• M3: 1,345,483 km (0.103 R)
• M4: 1,820,606 km (0.111 R)
• M5: 2,474,648 km (0.115 R)
• M6: 3,125,548 km (0.11 R)
• M7: 3,749,371 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 776.1

Radius: 10.9

Gravity: 6.53 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.19 AU - 1.47 AU

Year: 975 Days

Day: 8.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,177,349 km

• M1: 135,536 km (0.031 R)
• M2: 546,331 km (0.113 R)
• M3: 1,013,825 km (0.048 R)
• M4: 1,365,230 km (0.12 R)
• M5: 1,912,609 km (0.062 R)
• M6: 2,554,832 km (0.073 R)
• M7: 2,966,227 km (0.098 R)
• M8: 3,436,413 km (0.118 R)
• M9: 4,388,005 km (0.105 R)
• M10: 5,406,916 km (0.077 R)
• M11: 5,835,215 km (0.067 R)
• M12: 7,678,859 km (0.065 R)
• M13: 8,733,673 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373.5

Radius: 10.1

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 2.61 AU - 3.41 AU

Year: 3320 Days

Day: 11.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,177,349 km

• M1: 129,701 km (0.104 R)
• M2: 461,061 km (0.096 R)
• M3: 795,861 km (0.12 R)
• M4: 1,547,291 km (0.111 R)
• M5: 2,658,354 km (0.087 R)
• M6: 4,338,338 km (0.102 R)
• M7: 4,992,081 km (0.086 R)
• M8: 5,685,168 km (0.05 R)
• M9: 6,173,156 km (0.028 R)
• M10: 6,885,990 km (0.082 R)
• M11: 7,351,539 km (0.064 R)
• M12: 10,906,134 km (0.102 R)
• M13: 14,601,799 km (0.064 R)
• M14: 15,716,154 km (0.041 R)
• M15: 16,116,627 km (0.078 R)
• M16: 16,627,055 km (0.083 R)
• M17: 17,148,105 km (0.067 R)
• M18: 18,277,718 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 89.2

Radius: 8

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 2.46 AU - 3.66 AU

Year: 3403 Days

Day: 11.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,177,349 km

• M1: 106,214 km (0.106 R)
• M2: 920,775 km (0.118 R)
• M3: 4,686,752 km (0.11 R)
• M4: 5,419,183 km (0.083 R)
• M5: 5,758,620 km (0.062 R)
• M6: 6,790,098 km (0.117 R)
• M7: 9,698,729 km (0.088 R)
• M8: 10,041,607 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 722.5

Radius: 12.8

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 3.9 AU - 5.3 AU

Year: 6273 Days

Day: 5.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,177,349 km

• M1: 159,172 km (0.108 R)
• M2: 663,616 km (0.081 R)
• M3: 1,250,638 km (0.108 R)
• M4: 2,319,814 km (0.096 R)
• M5: 3,692,075 km (0.117 R)
• M6: 4,295,852 km (0.115 R)
• M7: 5,889,668 km (0.09 R)
• M8: 6,855,771 km (0.112 R)
• M9: 7,847,755 km (0.057 R)
• M10: 10,116,107 km (0.092 R)
• M11: 11,650,383 km (0.096 R)
• M12: 13,389,757 km (0.081 R)
• M13: 16,986,090 km (0.117 R)
• M14: 22,096,353 km (0.119 R)
• M15: 22,720,775 km (0.095 R)
• M16: 29,629,653 km (0.108 R)
• M17: 30,870,717 km (0.067 R)
• M18: 32,245,671 km (0.09 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 342.4

Radius: 3.9

Gravity: 22.51 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 6.68 AU - 7.24 AU

Year: 11675 Days

Day: 23.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 42,177,349 km

• M1: 48,619 km (0.085 R)
• M2: 221,106 km (0.052 R)
• M3: 416,780 km (0.102 R)
• M4: 772,075 km (0.07 R)
• M5: 896,241 km (0.037 R)
• M6: 1,075,908 km (0.119 R)
• M7: 1,208,900 km (0.11 R)
• M8: 1,403,228 km (0.094 R)
• M9: 1,719,029 km (0.061 R)
• M10: 2,323,853 km (0.096 R)
• M11: 4,202,803 km (0.093 R)
• M12: 4,620,779 km (0.083 R)
• M13: 5,904,030 km (0.079 R)
• M14: 6,144,733 km (0.099 R)
• M15: 9,658,039 km (0.09 R)
• M16: 10,383,289 km (0.071 R)
• M17: 10,886,536 km (0.107 R)
• M18: 11,248,413 km (0.12 R)
• M19: 12,326,266 km (0.054 R)
• M20: 13,062,736 km (0.099 R)
• M21: 13,471,288 km (0.035 R)
• M22: 15,190,617 km (0.103 R)
• M23: 18,688,514 km (0.066 R)
• M24: 20,505,679 km (0.107 R)
• M25: 22,354,709 km (0.069 R)
• M26: 23,022,963 km (0.062 R)
• M27: 26,012,227 km (0.115 R)
• M28: 28,368,394 km (0.115 R)
• M29: 29,848,216 km (0.091 R)
• M30: 32,640,311 km (0.11 R)
• M31: 33,068,161 km (0.057 R)
• M32: 37,554,900 km (0.078 R)
• M33: 38,379,633 km (0.095 R)
• M34: 39,943,080 km (0.117 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 522 - 16,985 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit