🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.45

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.43 AU - 0.59 AU

Year: 232 Days

Day: 32.9 Hours

Environment

Temp: -117 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 36,888,002 km

• M1: 43,982 km (0.093 R)
• M2: 411,394 km (0.11 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.48 AU - 0.6 AU

Year: 252 Days

Day: 30.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 4.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 618.5

Radius: 9.7

Gravity: 6.57 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.73 AU - 0.85 AU

Year: 446 Days

Day: 12.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,888,002 km

• M1: 120,576 km (0.108 R)
• M2: 511,326 km (0.112 R)
• M3: 855,999 km (0.082 R)
• M4: 1,167,013 km (0.062 R)
• M5: 1,494,632 km (0.073 R)
• M6: 1,892,263 km (0.057 R)
• M7: 2,242,921 km (0.09 R)
• M8: 2,968,022 km (0.063 R)
• M9: 3,456,758 km (0.032 R)
• M10: 3,816,092 km (0.095 R)
• M11: 5,331,818 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 56.5

Radius: 11.4

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.75 AU - 1.23 AU

Year: 626 Days

Day: 5.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 36,888,002 km

• M1: 141,819 km (0.055 R)
• M2: 540,048 km (0.092 R)
• M3: 1,063,641 km (0.042 R)
• M4: 1,480,869 km (0.078 R)
• M5: 2,601,806 km (0.105 R)
• M6: 3,290,555 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357.8

Radius: 14.6

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.85 AU - 1.39 AU

Year: 754 Days

Day: 6.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,888,002 km

• M1: 181,612 km (0.09 R)
• M2: 689,048 km (0.115 R)
• M3: 1,146,368 km (0.113 R)
• M4: 1,696,141 km (0.077 R)
• M5: 2,262,369 km (0.097 R)
• M6: 2,844,304 km (0.052 R)
• M7: 3,302,971 km (0.079 R)
• M8: 3,865,459 km (0.119 R)
• M9: 4,328,914 km (0.105 R)
• M10: 5,168,606 km (0.061 R)
• M11: 6,377,806 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 586.6

Radius: 11.7

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.85 AU - 1.95 AU

Year: 1665 Days

Day: 11 Hours

Environment

Temp: -177 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 36,888,002 km

• M1: 147,204 km (0.066 R)
• M2: 734,974 km (0.085 R)
• M3: 1,429,557 km (0.111 R)
• M4: 2,198,042 km (0.11 R)
• M5: 3,505,527 km (0.074 R)
• M6: 4,781,148 km (0.076 R)
• M7: 5,942,476 km (0.085 R)
• M8: 6,589,637 km (0.028 R)
• M9: 7,661,505 km (0.119 R)
• M10: 8,225,041 km (0.093 R)
• M11: 10,934,258 km (0.098 R)
• M12: 12,663,909 km (0.026 R)
• M13: 13,492,830 km (0.025 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.7

Radius: 8.8

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 2.9 AU - 3.96 AU

Year: 4039 Days

Day: 8 Hours

Environment

Temp: -212 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 36,888,002 km

• M1: 109,506 km (0.083 R)
• M2: 424,858 km (0.097 R)
• M3: 705,803 km (0.072 R)
• M4: 1,685,370 km (0.031 R)
• M5: 2,135,659 km (0.025 R)
• M6: 2,926,284 km (0.086 R)
• M7: 3,351,740 km (0.083 R)
• M8: 3,638,220 km (0.116 R)
• M9: 4,066,968 km (0.046 R)
• M10: 4,529,076 km (0.114 R)
• M11: 4,880,182 km (0.11 R)
• M12: 5,274,821 km (0.074 R)
• M13: 5,961,625 km (0.102 R)
• M14: 7,226,325 km (0.043 R)
• M15: 7,512,356 km (0.114 R)
• M16: 9,389,959 km (0.032 R)
• M17: 9,846,233 km (0.05 R)
• M18: 12,489,029 km (0.112 R)
• M19: 12,763,092 km (0.087 R)
• M20: 13,513,624 km (0.067 R)
• M21: 14,342,995 km (0.029 R)
• M22: 16,427,941 km (0.116 R)
• M23: 21,514,268 km (0.102 R)
• M24: 21,908,608 km (0.086 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.8

Radius: 11.4

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 3.21 AU - 4.07 AU

Year: 4416 Days

Day: 7.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,888,002 km

• M1: 141,968 km (0.116 R)
• M2: 536,159 km (0.099 R)
• M3: 1,103,883 km (0.074 R)
• M4: 1,678,189 km (0.089 R)
• M5: 2,113,220 km (0.114 R)
• M6: 2,871,082 km (0.063 R)
• M7: 3,431,476 km (0.053 R)
• M8: 4,582,482 km (0.112 R)
• M9: 5,122,530 km (0.115 R)
• M10: 5,850,922 km (0.104 R)
• M11: 8,904,514 km (0.075 R)
• M12: 10,828,642 km (0.109 R)
• M13: 13,313,762 km (0.067 R)
• M14: 14,965,921 km (0.118 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.2

Radius: 10.7

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 3.63 AU - 4.51 AU

Year: 5221 Days

Day: 13 Hours

Environment

Temp: -213 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 36,888,002 km

• M1: 135,984 km (0.096 R)
• M2: 816,954 km (0.054 R)
• M3: 1,187,209 km (0.118 R)
• M4: 1,530,386 km (0.111 R)
• M5: 2,225,268 km (0.111 R)
• M6: 5,189,999 km (0.062 R)
• M7: 6,158,944 km (0.117 R)
• M8: 14,542,259 km (0.116 R)
• M9: 17,049,669 km (0.083 R)
• M10: 21,331,310 km (0.094 R)
• M11: 24,172,024 km (0.068 R)
• M12: 26,927,916 km (0.093 R)

Planet 10 - Gas Giant

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 964.6

Radius: 11.3

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 4 AU - 4.62 AU

Year: 5689 Days

Day: 5.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 36,888,002 km

• M1: 140,622 km (0.099 R)
• M2: 564,732 km (0.09 R)
• M3: 1,083,986 km (0.114 R)
• M4: 1,584,840 km (0.104 R)
• M5: 2,354,072 km (0.069 R)
• M6: 2,805,110 km (0.092 R)
• M7: 3,186,285 km (0.117 R)
• M8: 3,740,695 km (0.106 R)
• M9: 4,153,884 km (0.111 R)
• M10: 5,367,422 km (0.102 R)
• M11: 6,121,994 km (0.11 R)
• M12: 6,839,016 km (0.119 R)
• M13: 9,069,072 km (0.056 R)
• M14: 9,594,160 km (0.105 R)
• M15: 11,242,430 km (0.066 R)
• M16: 11,900,211 km (0.116 R)
• M17: 12,907,603 km (0.082 R)
• M18: 13,913,649 km (0.081 R)
• M19: 16,786,527 km (0.082 R)
• M20: 19,381,751 km (0.118 R)
• M21: 21,000,699 km (0.102 R)
• M22: 24,089,446 km (0.113 R)
• M23: 25,097,586 km (0.067 R)
• M24: 27,559,369 km (0.093 R)
• M25: 28,291,351 km (0.105 R)
• M26: 29,130,146 km (0.056 R)
• M27: 29,508,330 km (0.118 R)
• M28: 32,348,445 km (0.05 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 166 - 11,590 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit