🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.53 AU - 0.59 AU

Year: 275 Days

Day: 26.5 Hours

Environment

Temp: -119 °C

Axial Tilt: 34.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.4

Radius: 13.6

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.79 AU - 0.97 AU

Year: 542 Days

Day: 6.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 17,662,197 km

• M1: 169,195 km (0.077 R)
• M2: 597,045 km (0.105 R)
• M3: 1,354,010 km (0.082 R)
• M4: 1,876,406 km (0.07 R)
• M5: 2,383,094 km (0.041 R)
• M6: 2,896,065 km (0.097 R)
• M7: 3,446,585 km (0.103 R)
• M8: 3,882,214 km (0.079 R)
• M9: 4,701,113 km (0.093 R)
• M10: 5,303,693 km (0.058 R)
• M11: 5,767,596 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.8

Radius: 8.7

Gravity: 12.67 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.75 AU - 1.03 AU

Year: 551 Days

Day: 10.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 17,662,197 km

• M1: 108,159 km (0.113 R)
• M2: 380,727 km (0.103 R)
• M3: 651,349 km (0.106 R)
• M4: 1,030,879 km (0.078 R)
• M5: 1,941,182 km (0.08 R)
• M6: 2,483,025 km (0.114 R)
• M7: 3,159,657 km (0.085 R)
• M8: 3,924,999 km (0.118 R)
• M9: 4,390,398 km (0.076 R)
• M10: 4,677,177 km (0.074 R)
• M11: 5,078,997 km (0.045 R)
• M12: 6,107,034 km (0.113 R)
• M13: 6,587,841 km (0.116 R)
• M14: 7,180,399 km (0.098 R)
• M15: 7,579,825 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 527.6

Radius: 10.4

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.8 AU - 1.22 AU

Year: 666 Days

Day: 12 Hours

Environment

Temp: -164 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 17,662,197 km

• M1: 129,851 km (0.081 R)
• M2: 572,960 km (0.108 R)
• M3: 1,208,751 km (0.095 R)
• M4: 2,067,143 km (0.102 R)
• M5: 2,529,700 km (0.114 R)
• M6: 3,192,269 km (0.111 R)
• M7: 3,624,457 km (0.035 R)
• M8: 4,829,618 km (0.087 R)
• M9: 5,366,375 km (0.08 R)
• M10: 5,942,476 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 365

Radius: 8.9

Gravity: 4.61 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.99 AU - 1.09 AU

Year: 696 Days

Day: 8.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 17,662,197 km

• M1: 110,702 km (0.11 R)
• M2: 430,094 km (0.071 R)
• M3: 747,989 km (0.066 R)
• M4: 1,404,574 km (0.103 R)
• M5: 1,853,069 km (0.096 R)
• M6: 2,645,638 km (0.089 R)
• M7: 4,024,033 km (0.075 R)
• M8: 4,366,612 km (0.105 R)
• M9: 6,362,697 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 118.5

Radius: 14.8

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.47 AU - 2.23 AU

Year: 1651 Days

Day: 7.8 Hours

Environment

Temp: -196 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 17,662,197 km

• M1: 184,305 km (0.083 R)
• M2: 1,346,530 km (0.067 R)
• M3: 2,185,326 km (0.119 R)
• M4: 3,251,510 km (0.097 R)
• M5: 3,867,853 km (0.086 R)
• M6: 4,529,674 km (0.114 R)
• M7: 5,337,353 km (0.087 R)
• M8: 6,160,440 km (0.082 R)
• M9: 7,153,471 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.3

Radius: 12.3

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.67 AU - 2.97 AU

Year: 3107 Days

Day: 7.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 17,662,197 km

• M1: 153,039 km (0.114 R)
• M2: 604,824 km (0.091 R)
• M3: 1,890,169 km (0.07 R)
• M4: 2,649,977 km (0.093 R)
• M5: 3,479,946 km (0.079 R)
• M6: 5,270,931 km (0.073 R)
• M7: 6,664,585 km (0.039 R)
• M8: 7,432,770 km (0.106 R)
• M9: 11,659,508 km (0.104 R)
• M10: 13,249,285 km (0.089 R)
• M11: 15,313,586 km (0.11 R)
• M12: 16,246,628 km (0.109 R)
• M13: 17,165,009 km (0.078 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 857.9

Radius: 12.8

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 2.96 AU - 3.18 AU

Year: 3529 Days

Day: 11.8 Hours

Environment

Temp: -203 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 17,662,197 km

• M1: 159,172 km (0.076 R)
• M2: 647,310 km (0.094 R)
• M3: 1,114,504 km (0.087 R)
• M4: 3,212,913 km (0.082 R)
• M5: 3,998,153 km (0.065 R)
• M6: 5,240,114 km (0.068 R)
• M7: 6,036,723 km (0.11 R)
• M8: 8,473,223 km (0.086 R)
• M9: 13,836,457 km (0.068 R)
• M10: 14,504,860 km (0.075 R)
• M11: 15,087,095 km (0.094 R)
• M12: 17,992,884 km (0.113 R)
• M13: 19,164,983 km (0.106 R)
• M14: 19,673,466 km (0.112 R)
• M15: 21,729,390 km (0.059 R)
• M16: 23,201,283 km (0.098 R)
• M17: 24,366,501 km (0.102 R)
• M18: 24,963,546 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 753.3

Radius: 7.2

Gravity: 14.53 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 5.28 AU - 6.84 AU

Year: 9786 Days

Day: 24.7 Hours

Environment

Temp: -231 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 17,662,197 km

• M1: 90,208 km (0.117 R)
• M2: 359,484 km (0.091 R)
• M3: 762,500 km (0.109 R)
• M4: 1,192,893 km (0.068 R)
• M5: 1,498,073 km (0.109 R)
• M6: 2,158,847 km (0.118 R)
• M7: 3,593,939 km (0.101 R)
• M8: 4,379,178 km (0.117 R)
• M9: 4,952,438 km (0.083 R)
• M10: 6,584,849 km (0.088 R)
• M11: 7,840,125 km (0.106 R)
• M12: 8,100,426 km (0.081 R)
• M13: 8,456,468 km (0.106 R)
• M14: 8,776,458 km (0.069 R)
• M15: 9,587,428 km (0.116 R)
• M16: 10,709,712 km (0.096 R)
• M17: 11,917,116 km (0.103 R)
• M18: 12,494,863 km (0.111 R)
• M19: 14,021,060 km (0.119 R)
• M20: 16,360,771 km (0.031 R)
• M21: 21,039,445 km (0.099 R)
• M22: 23,457,694 km (0.111 R)
• M23: 24,090,044 km (0.098 R)
• M24: 30,515,123 km (0.063 R)
• M25: 38,367,216 km (0.12 R)
• M26: 39,497,877 km (0.065 R)
• M27: 40,135,463 km (0.106 R)
• M28: 40,650,529 km (0.118 R)
• M29: 42,488,039 km (0.102 R)
• M30: 45,625,705 km (0.1 R)
• M31: 48,768,307 km (0.089 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 28.6

Radius: 7.5

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 6.01 AU - 7.05 AU

Year: 10947 Days

Day: 17.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 17,662,197 km

• M1: 94,097 km (0.055 R)
• M2: 354,846 km (0.12 R)
• M3: 899,382 km (0.091 R)
• M4: 1,151,604 km (0.113 R)
• M5: 1,470,697 km (0.088 R)
• M6: 1,894,208 km (0.101 R)
• M7: 4,041,985 km (0.105 R)
• M8: 7,183,839 km (0.06 R)
• M9: 11,035,835 km (0.099 R)
• M10: 12,106,806 km (0.101 R)
• M11: 12,395,530 km (0.114 R)
• M12: 13,072,610 km (0.109 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 535 - 18,869 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit