🌌 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: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.5 AU - 0.56 AU

Year: 253 Days

Day: 34.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 4.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 915.9

Radius: 14.3

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.61 AU - 0.75 AU

Year: 368 Days

Day: 11.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,348,289 km

• M1: 177,872 km (0.083 R)
• M2: 827,875 km (0.116 R)
• M3: 1,407,118 km (0.117 R)
• M4: 1,919,490 km (0.068 R)
• M5: 2,371,725 km (0.108 R)
• M6: 2,969,817 km (0.079 R)
• M7: 3,522,282 km (0.1 R)
• M8: 3,984,539 km (0.088 R)
• M9: 4,445,301 km (0.109 R)
• M10: 4,911,448 km (0.111 R)
• M11: 5,772,982 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.6

Radius: 12.3

Gravity: 5.89 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.73 AU - 0.77 AU

Year: 426 Days

Day: 13 Hours

Environment

Temp: -152 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 67,348,289 km

• M1: 153,039 km (0.089 R)
• M2: 572,960 km (0.106 R)
• M3: 1,150,258 km (0.105 R)
• M4: 1,984,865 km (0.054 R)
• M5: 2,576,225 km (0.111 R)
• M6: 2,963,683 km (0.12 R)
• M7: 3,663,502 km (0.058 R)
• M8: 4,588,915 km (0.103 R)
• M9: 6,326,195 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.9

Radius: 14.9

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.01 AU - 1.21 AU

Year: 767 Days

Day: 14.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 67,348,289 km

• M1: 185,352 km (0.07 R)
• M2: 698,472 km (0.066 R)
• M3: 1,234,781 km (0.071 R)
• M4: 2,054,428 km (0.118 R)
• M5: 2,639,206 km (0.03 R)
• M6: 3,488,024 km (0.072 R)
• M7: 4,026,427 km (0.087 R)
• M8: 4,757,063 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 460.9

Radius: 12.2

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 1.08 AU - 1.34 AU

Year: 873 Days

Day: 8.2 Hours

Environment

Temp: -177 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 67,348,289 km

• M1: 151,991 km (0.058 R)
• M2: 543,040 km (0.051 R)
• M3: 926,310 km (0.088 R)
• M4: 1,443,769 km (0.052 R)
• M5: 2,113,968 km (0.08 R)
• M6: 2,592,382 km (0.06 R)
• M7: 3,105,502 km (0.119 R)
• M8: 4,183,205 km (0.119 R)
• M9: 4,725,049 km (0.052 R)
• M10: 5,644,178 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.1

Radius: 10.2

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.34 AU - 1.64 AU

Year: 1193 Days

Day: 14.1 Hours

Environment

Temp: -169 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,348,289 km

• M1: 127,009 km (0.083 R)
• M2: 457,620 km (0.056 R)
• M3: 827,426 km (0.101 R)
• M4: 1,234,482 km (0.115 R)
• M5: 1,595,312 km (0.102 R)
• M6: 2,257,731 km (0.045 R)
• M7: 2,678,849 km (0.105 R)
• M8: 3,825,068 km (0.108 R)
• M9: 4,252,918 km (0.047 R)
• M10: 4,789,825 km (0.027 R)
• M11: 5,820,105 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 375.7

Radius: 11

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.78 AU - 2.46 AU

Year: 2025 Days

Day: 9.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 67,348,289 km

• M1: 137,480 km (0.096 R)
• M2: 551,418 km (0.091 R)
• M3: 968,497 km (0.064 R)
• M4: 1,398,441 km (0.058 R)
• M5: 2,643,245 km (0.089 R)
• M6: 2,986,572 km (0.112 R)
• M7: 3,359,669 km (0.029 R)
• M8: 3,764,182 km (0.102 R)
• M9: 4,849,813 km (0.114 R)
• M10: 5,832,372 km (0.093 R)
• M11: 7,254,450 km (0.089 R)
• M12: 7,712,069 km (0.118 R)
• M13: 9,357,496 km (0.069 R)
• M14: 9,706,359 km (0.093 R)
• M15: 10,396,753 km (0.106 R)
• M16: 12,550,214 km (0.097 R)
• M17: 13,529,781 km (0.11 R)

Asteroid Belt

Center: 4.34 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 6.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 754.5

Radius: 5.8

Gravity: 22.43 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 6.33 AU - 6.77 AU

Year: 10997 Days

Day: 17.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 67,348,289 km

• M1: 79,137 km (0.096 R)
• M2: 313,108 km (0.093 R)
• M3: 525,837 km (0.108 R)
• M4: 755,619 km (0.102 R)
• M5: 1,063,342 km (0.098 R)
• M6: 1,396,945 km (0.029 R)
• M7: 1,749,846 km (0.082 R)
• M8: 2,654,315 km (0.098 R)
• M9: 3,367,598 km (0.102 R)
• M10: 5,969,853 km (0.066 R)
• M11: 6,460,085 km (0.073 R)
• M12: 9,173,491 km (0.114 R)
• M13: 12,026,622 km (0.084 R)
• M14: 12,503,240 km (0.108 R)
• M15: 14,139,093 km (0.076 R)
• M16: 15,076,623 km (0.074 R)
• M17: 16,852,649 km (0.067 R)
• M18: 17,905,818 km (0.09 R)
• M19: 18,214,588 km (0.119 R)
• M20: 19,242,774 km (0.104 R)
• M21: 20,309,108 km (0.116 R)
• M22: 20,560,731 km (0.093 R)
• M23: 23,558,822 km (0.104 R)
• M24: 25,744,597 km (0.105 R)
• M25: 26,039,305 km (0.12 R)
• M26: 27,139,148 km (0.098 R)
• M27: 30,186,756 km (0.055 R)
• M28: 30,734,284 km (0.073 R)
• M29: 33,222,246 km (0.108 R)
• M30: 44,377,760 km (0.096 R)
• M31: 51,175,337 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 528.2

Radius: 5.8

Gravity: 15.7 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 8.4 AU - 10.44 AU

Year: 18966 Days

Day: 20.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 67,348,289 km

• M1: 72,256 km (0.099 R)
• M2: 352,901 km (0.063 R)
• M3: 626,665 km (0.078 R)
• M4: 848,669 km (0.079 R)
• M5: 1,037,461 km (0.119 R)
• M6: 1,980,975 km (0.09 R)
• M7: 2,534,038 km (0.109 R)
• M8: 4,675,083 km (0.065 R)
• M9: 5,273,175 km (0.118 R)
• M10: 5,533,775 km (0.11 R)
• M11: 6,080,854 km (0.107 R)
• M12: 7,056,980 km (0.102 R)
• M13: 9,477,175 km (0.109 R)
• M14: 10,374,164 km (0.118 R)
• M15: 10,606,938 km (0.086 R)
• M16: 11,022,820 km (0.067 R)
• M17: 11,760,786 km (0.057 R)
• M18: 15,644,945 km (0.102 R)
• M19: 18,040,905 km (0.039 R)
• M20: 18,977,537 km (0.107 R)
• M21: 19,678,702 km (0.092 R)
• M22: 20,215,908 km (0.093 R)
• M23: 21,696,030 km (0.108 R)
• M24: 24,252,956 km (0.081 R)
• M25: 32,740,541 km (0.041 R)
• M26: 33,748,232 km (0.105 R)
• M27: 42,863,530 km (0.112 R)
• M28: 48,627,685 km (0.116 R)
• M29: 57,027,456 km (0.047 R)
• M30: 57,571,095 km (0.076 R)
• M31: 60,528,645 km (0.064 R)
• M32: 64,758,525 km (0.108 R)
• M33: 65,548,102 km (0.073 R)
• M34: 66,544,274 km (0.107 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: 165 - 14,156 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit