🌌 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: 2.2

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.49 AU - 0.63 AU

Year: 271 Days

Day: 21.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 14.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.2

Radius: 13.6

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.57 AU - 0.81 AU

Year: 370 Days

Day: 11.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,317,288 km

• M1: 169,644 km (0.045 R)
• M2: 639,680 km (0.104 R)
• M3: 1,191,248 km (0.077 R)
• M4: 1,661,284 km (0.101 R)
• M5: 2,216,891 km (0.054 R)
• M6: 2,661,047 km (0.092 R)
• M7: 3,332,891 km (0.101 R)
• M8: 3,779,441 km (0.074 R)
• M9: 4,525,186 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.8

Radius: 14

Gravity: 4.21 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.79 AU - 0.99 AU

Year: 542 Days

Day: 13.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,317,288 km

• M1: 174,132 km (0.093 R)
• M2: 627,264 km (0.071 R)
• M3: 1,076,506 km (0.058 R)
• M4: 1,551,480 km (0.064 R)
• M5: 2,338,813 km (0.082 R)
• M6: 3,017,987 km (0.105 R)
• M7: 4,632,597 km (0.093 R)
• M8: 6,867,290 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 264.4

Radius: 9.4

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.74 AU - 1.14 AU

Year: 588 Days

Day: 8.6 Hours

Environment

Temp: -155 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,317,288 km

• M1: 117,434 km (0.079 R)
• M2: 442,361 km (0.093 R)
• M3: 898,634 km (0.092 R)
• M4: 1,243,308 km (0.041 R)
• M5: 2,294,981 km (0.06 R)
• M6: 2,790,150 km (0.106 R)
• M7: 3,090,393 km (0.118 R)
• M8: 3,880,718 km (0.068 R)
• M9: 4,283,286 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.2

Radius: 10.2

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 1.11 AU - 1.23 AU

Year: 817 Days

Day: 6.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 165.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,317,288 km

• M1: 127,607 km (0.086 R)
• M2: 447,597 km (0.115 R)
• M3: 888,761 km (0.066 R)
• M4: 1,236,426 km (0.118 R)
• M5: 1,617,003 km (0.114 R)
• M6: 1,938,639 km (0.09 R)
• M7: 2,528,204 km (0.049 R)
• M8: 2,988,666 km (0.028 R)
• M9: 3,441,649 km (0.057 R)
• M10: 3,844,815 km (0.075 R)
• M11: 4,264,736 km (0.115 R)
• M12: 5,000,608 km (0.093 R)
• M13: 6,147,874 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867

Radius: 14.5

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.09 AU - 1.27 AU

Year: 828 Days

Day: 8.9 Hours

Environment

Temp: -177 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,317,288 km

• M1: 180,265 km (0.064 R)
• M2: 727,644 km (0.097 R)
• M3: 1,331,571 km (0.067 R)
• M4: 2,342,254 km (0.078 R)
• M5: 2,934,213 km (0.092 R)
• M6: 3,397,517 km (0.088 R)
• M7: 4,242,147 km (0.1 R)
• M8: 5,394,050 km (0.099 R)
• M9: 5,991,993 km (0.06 R)
• M10: 7,017,935 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 72.1

Radius: 10.6

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.61 AU - 2.15 AU

Year: 1664 Days

Day: 6.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 40,317,288 km

• M1: 131,796 km (0.069 R)
• M2: 545,733 km (0.087 R)
• M3: 931,696 km (0.083 R)
• M4: 1,349,522 km (0.113 R)
• M5: 2,160,792 km (0.091 R)
• M6: 4,448,442 km (0.102 R)
• M7: 5,871,716 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 594.3

Radius: 12

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.25 AU - 3.29 AU

Year: 2977 Days

Day: 5.2 Hours

Environment

Temp: -206 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 40,317,288 km

• M1: 149,299 km (0.103 R)
• M2: 1,463,666 km (0.112 R)
• M3: 2,372,772 km (0.09 R)
• M4: 2,833,084 km (0.104 R)
• M5: 3,626,701 km (0.117 R)
• M6: 4,346,865 km (0.116 R)
• M7: 5,184,165 km (0.095 R)
• M8: 6,709,315 km (0.113 R)
• M9: 7,827,260 km (0.09 R)
• M10: 8,347,711 km (0.108 R)
• M11: 9,278,210 km (0.057 R)
• M12: 11,263,672 km (0.038 R)
• M13: 13,107,915 km (0.107 R)
• M14: 14,898,302 km (0.065 R)
• M15: 15,648,087 km (0.101 R)
• M16: 16,953,478 km (0.075 R)
• M17: 18,161,182 km (0.092 R)
• M18: 19,425,433 km (0.101 R)
• M19: 20,381,064 km (0.027 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 27.5

Radius: 6.1

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 5.53 AU - 6.59 AU

Year: 9632 Days

Day: 20.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,317,288 km

• M1: 76,145 km (0.065 R)
• M2: 425,606 km (0.118 R)
• M3: 876,344 km (0.103 R)
• M4: 3,414,871 km (0.078 R)
• M5: 3,638,968 km (0.071 R)
• M6: 5,355,305 km (0.091 R)
• M7: 5,802,153 km (0.052 R)
• M8: 6,401,891 km (0.106 R)
• M9: 8,355,939 km (0.103 R)
• M10: 14,127,425 km (0.113 R)

Asteroid Belt

Center: 7.75 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 10 - Ice Giant

Semi-Major Axis: 9.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 116.6

Radius: 5.8

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 9.37 AU - 9.49 AU

Year: 18697 Days

Day: 19.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 40,317,288 km

• M1: 72,256 km (0.096 R)
• M2: 269,875 km (0.049 R)
• M3: 581,188 km (0.075 R)
• M4: 804,238 km (0.107 R)
• M5: 1,023,549 km (0.098 R)
• M6: 1,271,133 km (0.102 R)
• M7: 1,965,566 km (0.113 R)
• M8: 2,422,887 km (0.099 R)
• M9: 2,866,146 km (0.047 R)
• M10: 3,477,103 km (0.056 R)
• M11: 3,838,083 km (0.047 R)
• M12: 4,066,519 km (0.073 R)
• M13: 5,317,008 km (0.099 R)
• M14: 6,444,527 km (0.084 R)
• M15: 7,803,175 km (0.065 R)
• M16: 8,088,009 km (0.085 R)
• M17: 10,523,612 km (0.076 R)
• M18: 10,721,380 km (0.063 R)
• M19: 12,068,359 km (0.096 R)
• M20: 14,844,597 km (0.061 R)
• M21: 16,579,633 km (0.081 R)
• M22: 16,847,563 km (0.073 R)
• M23: 19,170,518 km (0.063 R)
• M24: 24,787,619 km (0.097 R)
• M25: 31,308,441 km (0.05 R)
• M26: 34,905,222 km (0.109 R)
• M27: 35,235,235 km (0.089 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: 484 - 18,710 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit