🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.47 AU - 0.71 AU

Year: 293 Days

Day: 21.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 11.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.4

Radius: 9.2

Gravity: 6.35 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.6 AU - 0.92 AU

Year: 428 Days

Day: 15 Hours

Environment

Temp: -134 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,203,505 km

• M1: 114,592 km (0.111 R)
• M2: 593,604 km (0.108 R)
• M3: 920,476 km (0.073 R)
• M4: 1,223,711 km (0.103 R)
• M5: 1,663,977 km (0.079 R)
• M6: 2,114,865 km (0.115 R)
• M7: 2,401,495 km (0.094 R)
• M8: 3,119,116 km (0.056 R)
• M9: 3,528,266 km (0.089 R)
• M10: 3,833,296 km (0.104 R)
• M11: 4,209,235 km (0.076 R)
• M12: 5,020,355 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 34

Radius: 9.8

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.67 AU - 0.93 AU

Year: 462 Days

Day: 13.9 Hours

Environment

Temp: -145 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 53,203,505 km

• M1: 121,922 km (0.109 R)
• M2: 923,019 km (0.094 R)
• M3: 1,530,237 km (0.103 R)
• M4: 1,997,132 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 972.4

Radius: 13.9

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.78 AU - 0.92 AU

Year: 506 Days

Day: 14.9 Hours

Environment

Temp: -140 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,203,505 km

• M1: 173,384 km (0.027 R)
• M2: 654,491 km (0.112 R)
• M3: 1,167,312 km (0.056 R)
• M4: 1,650,962 km (0.049 R)
• M5: 2,113,070 km (0.083 R)
• M6: 3,124,800 km (0.076 R)
• M7: 3,816,391 km (0.085 R)
• M8: 4,623,921 km (0.11 R)
• M9: 5,077,352 km (0.042 R)
• M10: 5,686,065 km (0.032 R)
• M11: 6,304,353 km (0.11 R)
• M12: 6,988,016 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791.5

Radius: 10.6

Gravity: 7.04 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.91 AU - 1.03 AU

Year: 617 Days

Day: 12.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 53,203,505 km

• M1: 132,843 km (0.05 R)
• M2: 724,502 km (0.079 R)
• M3: 1,102,686 km (0.093 R)
• M4: 1,531,733 km (0.073 R)
• M5: 2,291,540 km (0.107 R)
• M6: 3,480,993 km (0.081 R)
• M7: 5,537,964 km (0.095 R)
• M8: 6,183,030 km (0.11 R)
• M9: 6,772,146 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 459.4

Radius: 8.7

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.1 AU - 1.72 AU

Year: 1081 Days

Day: 12.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,203,505 km

• M1: 108,159 km (0.119 R)
• M2: 419,472 km (0.112 R)
• M3: 747,541 km (0.092 R)
• M4: 1,030,430 km (0.05 R)
• M5: 1,533,528 km (0.107 R)
• M6: 1,925,923 km (0.054 R)
• M7: 2,610,632 km (0.089 R)
• M8: 3,041,923 km (0.104 R)
• M9: 3,477,253 km (0.1 R)
• M10: 3,938,164 km (0.074 R)
• M11: 4,456,072 km (0.09 R)
• M12: 4,837,846 km (0.117 R)
• M13: 5,222,761 km (0.075 R)
• M14: 5,647,619 km (0.066 R)
• M15: 6,116,309 km (0.08 R)
• M16: 6,677,301 km (0.12 R)
• M17: 7,248,466 km (0.103 R)
• M18: 7,753,209 km (0.078 R)
• M19: 8,646,308 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.4

Radius: 13.8

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 4.43 AU - 5.21 AU

Year: 6833 Days

Day: 12.8 Hours

Environment

Temp: -211 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,203,505 km

• M1: 171,738 km (0.106 R)
• M2: 870,510 km (0.092 R)
• M3: 1,427,762 km (0.037 R)
• M4: 2,537,778 km (0.086 R)
• M5: 3,576,436 km (0.111 R)
• M6: 4,556,901 km (0.102 R)
• M7: 5,222,013 km (0.055 R)
• M8: 6,426,276 km (0.105 R)
• M9: 7,048,304 km (0.116 R)
• M10: 7,613,185 km (0.087 R)
• M11: 8,692,384 km (0.081 R)
• M12: 9,232,283 km (0.061 R)
• M13: 10,260,768 km (0.092 R)
• M14: 12,500,099 km (0.108 R)
• M15: 13,235,971 km (0.112 R)
• M16: 15,048,499 km (0.102 R)
• M17: 16,965,895 km (0.049 R)
• M18: 18,802,657 km (0.119 R)
• M19: 21,999,115 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 999.7

Radius: 3.2

Gravity: 97.63 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 5.46 AU - 6.7 AU

Year: 9680 Days

Day: 24.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 53,203,505 km

• M1: 39,793 km (0.092 R)
• M2: 300,991 km (0.114 R)
• M3: 695,181 km (0.103 R)
• M4: 1,018,014 km (0.056 R)
• M5: 1,194,389 km (0.112 R)
• M6: 1,336,358 km (0.055 R)
• M7: 1,446,761 km (0.083 R)
• M8: 2,280,320 km (0.092 R)
• M9: 2,418,250 km (0.114 R)
• M10: 2,820,967 km (0.06 R)
• M11: 3,050,151 km (0.113 R)
• M12: 3,730,821 km (0.106 R)
• M13: 4,178,867 km (0.057 R)
• M14: 4,537,752 km (0.089 R)
• M15: 5,350,667 km (0.104 R)
• M16: 5,993,040 km (0.077 R)
• M17: 6,409,970 km (0.113 R)
• M18: 8,226,537 km (0.079 R)
• M19: 8,645,859 km (0.1 R)
• M20: 8,788,725 km (0.114 R)
• M21: 9,989,398 km (0.116 R)
• M22: 12,527,176 km (0.101 R)
• M23: 13,781,255 km (0.029 R)
• M24: 14,372,017 km (0.062 R)
• M25: 14,979,384 km (0.101 R)
• M26: 16,029,412 km (0.073 R)
• M27: 19,067,745 km (0.091 R)
• M28: 21,846,076 km (0.118 R)
• M29: 24,882,614 km (0.073 R)
• M30: 29,567,570 km (0.028 R)
• M31: 30,438,080 km (0.07 R)
• M32: 31,775,785 km (0.087 R)
• M33: 32,688,930 km (0.095 R)
• M34: 36,641,156 km (0.066 R)
• M35: 37,392,437 km (0.077 R)
• M36: 38,925,516 km (0.104 R)
• M37: 40,766,467 km (0.086 R)
• M38: 41,168,287 km (0.098 R)
• M39: 42,116,438 km (0.111 R)
• M40: 43,495,880 km (0.085 R)
• M41: 44,337,817 km (0.093 R)
• M42: 50,846,820 km (0.079 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 395 - 16,141 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit