🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.47 AU - 0.63 AU

Year: 263 Days

Day: 43.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 35.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.7

Radius: 14.2

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.75 AU - 1.17 AU

Year: 607 Days

Day: 14.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 80,042,422 km

• M1: 182,809 km (0.107 R)
• M2: 789,877 km (0.06 R)
• M3: 1,688,511 km (0.115 R)
• M4: 2,200,734 km (0.11 R)
• M5: 3,136,319 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 767.3

Radius: 12.3

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.58 AU - 1.84 AU

Year: 1444 Days

Day: 10.2 Hours

Environment

Temp: -178 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 80,042,422 km

• M1: 173,085 km (0.049 R)
• M2: 806,333 km (0.048 R)
• M3: 1,523,954 km (0.088 R)
• M4: 2,046,798 km (0.11 R)
• M5: 2,782,520 km (0.077 R)
• M6: 4,227,486 km (0.093 R)
• M7: 5,620,392 km (0.088 R)
• M8: 6,170,613 km (0.116 R)
• M9: 6,756,588 km (0.104 R)
• M10: 9,322,341 km (0.074 R)
• M11: 9,767,993 km (0.055 R)
• M12: 11,120,358 km (0.045 R)
• M13: 13,700,323 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867

Radius: 12.3

Gravity: 5.73 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.68 AU - 2.1 AU

Year: 1678 Days

Day: 14.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 80,042,422 km

• M1: 165,904 km (0.094 R)
• M2: 600,486 km (0.085 R)
• M3: 1,037,312 km (0.058 R)
• M4: 1,743,713 km (0.085 R)
• M5: 2,626,041 km (0.08 R)
• M6: 3,015,145 km (0.105 R)
• M7: 3,577,483 km (0.068 R)
• M8: 3,966,139 km (0.089 R)
• M9: 4,542,091 km (0.06 R)
• M10: 5,239,366 km (0.117 R)
• M11: 6,928,326 km (0.103 R)
• M12: 8,987,092 km (0.076 R)
• M13: 9,543,147 km (0.092 R)
• M14: 10,367,282 km (0.114 R)
• M15: 11,961,696 km (0.05 R)
• M16: 13,043,139 km (0.027 R)
• M17: 13,928,310 km (0.09 R)
• M18: 14,674,055 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 946.8

Radius: 12

Gravity: 6.58 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.6 AU - 2.88 AU

Year: 2928 Days

Day: 6.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 80,042,422 km

• M1: 149,299 km (0.112 R)
• M2: 826,229 km (0.106 R)
• M3: 1,240,765 km (0.11 R)
• M4: 1,821,504 km (0.092 R)
• M5: 2,562,911 km (0.119 R)
• M6: 2,987,021 km (0.109 R)
• M7: 4,020,742 km (0.04 R)
• M8: 4,785,486 km (0.101 R)
• M9: 5,486,053 km (0.109 R)
• M10: 6,427,473 km (0.119 R)
• M11: 7,060,870 km (0.081 R)
• M12: 7,603,761 km (0.05 R)
• M13: 8,139,919 km (0.066 R)
• M14: 11,423,892 km (0.058 R)
• M15: 12,263,585 km (0.087 R)
• M16: 13,967,056 km (0.097 R)
• M17: 16,532,210 km (0.086 R)
• M18: 17,262,397 km (0.106 R)
• M19: 18,427,466 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.9

Radius: 9.7

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 4.72 AU - 6.98 AU

Year: 9136 Days

Day: 8.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 80,042,422 km

• M1: 120,576 km (0.116 R)
• M2: 427,102 km (0.044 R)
• M3: 891,753 km (0.114 R)
• M4: 3,286,516 km (0.115 R)
• M5: 6,089,980 km (0.108 R)
• M6: 7,195,358 km (0.054 R)
• M7: 10,476,189 km (0.116 R)
• M8: 13,259,009 km (0.042 R)
• M9: 15,156,957 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.7

Radius: 9.6

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 5.38 AU - 6.32 AU

Year: 9136 Days

Day: 9.1 Hours

Environment

Temp: -226 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 80,042,422 km

• M1: 119,379 km (0.108 R)
• M2: 460,761 km (0.094 R)
• M3: 977,173 km (0.058 R)
• M4: 1,382,584 km (0.109 R)
• M5: 1,944,922 km (0.113 R)
• M6: 2,730,760 km (0.035 R)
• M7: 3,812,801 km (0.104 R)
• M8: 5,956,389 km (0.108 R)
• M9: 7,208,523 km (0.114 R)
• M10: 8,246,283 km (0.084 R)
• M11: 8,627,908 km (0.096 R)
• M12: 9,154,941 km (0.114 R)
• M13: 9,890,962 km (0.031 R)
• M14: 10,865,742 km (0.027 R)
• M15: 11,221,785 km (0.076 R)
• M16: 12,724,047 km (0.097 R)
• M17: 18,819,861 km (0.076 R)
• M18: 20,932,183 km (0.06 R)
• M19: 23,449,915 km (0.084 R)
• M20: 24,825,318 km (0.105 R)
• M21: 27,547,849 km (0.109 R)
• M22: 32,412,772 km (0.092 R)
• M23: 36,672,123 km (0.111 R)
• M24: 37,821,483 km (0.031 R)
• M25: 39,113,410 km (0.071 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 912.4

Radius: 3.1

Gravity: 94.94 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 9.04 AU - 9.82 AU

Year: 18697 Days

Day: 15.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 80,042,422 km

• M1: 38,746 km (0.063 R)
• M2: 194,776 km (0.093 R)
• M3: 460,013 km (0.104 R)
• M4: 974,331 km (0.101 R)
• M5: 1,871,170 km (0.115 R)
• M6: 2,009,997 km (0.097 R)
• M7: 2,684,833 km (0.104 R)
• M8: 4,428,546 km (0.032 R)
• M9: 4,639,778 km (0.088 R)
• M10: 6,008,299 km (0.083 R)
• M11: 8,030,713 km (0.104 R)
• M12: 10,588,836 km (0.05 R)
• M13: 13,060,941 km (0.08 R)
• M14: 13,641,680 km (0.1 R)
• M15: 15,487,269 km (0.117 R)
• M16: 17,147,207 km (0.107 R)
• M17: 17,931,250 km (0.12 R)
• M18: 24,316,835 km (0.119 R)
• M19: 26,320,549 km (0.099 R)
• M20: 34,333,160 km (0.099 R)
• M21: 49,518,541 km (0.065 R)
• M22: 56,248,949 km (0.094 R)
• M23: 57,202,635 km (0.089 R)
• M24: 66,700,754 km (0.06 R)
• M25: 70,820,829 km (0.095 R)
• M26: 76,031,173 km (0.083 R)
• M27: 76,962,719 km (0.113 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 423 - 18,129 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit