🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.21

Radius: 1.08

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.4 AU - 0.66 AU

Year: 249 Days

Day: 35.8 Hours

Environment

Temp: -127 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.6 AU - 0.74 AU

Year: 354 Days

Day: 12.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.9

Radius: 14.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.86 AU - 0.98 AU

Year: 570 Days

Day: 6.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 65,360,355 km

• M1: 175,329 km (0.052 R)
• M2: 913,295 km (0.092 R)
• M3: 1,530,985 km (0.068 R)
• M4: 2,206,868 km (0.07 R)
• M5: 2,698,297 km (0.073 R)
• M6: 3,381,361 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 639.8

Radius: 14.2

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.9 AU - 1.48 AU

Year: 838 Days

Day: 5.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 65,360,355 km

• M1: 176,525 km (0.095 R)
• M2: 625,768 km (0.116 R)
• M3: 1,125,425 km (0.082 R)
• M4: 1,640,191 km (0.105 R)
• M5: 2,313,980 km (0.113 R)
• M6: 2,954,857 km (0.048 R)
• M7: 3,487,575 km (0.091 R)
• M8: 3,992,767 km (0.104 R)
• M9: 4,481,055 km (0.116 R)
• M10: 5,617,400 km (0.062 R)
• M11: 6,504,665 km (0.117 R)
• M12: 7,766,822 km (0.114 R)
• M13: 8,583,776 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100

Radius: 13.7

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.57 AU - 2.49 AU

Year: 1867 Days

Day: 10.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 65,360,355 km

• M1: 170,542 km (0.1 R)
• M2: 821,442 km (0.041 R)
• M3: 1,550,881 km (0.029 R)
• M4: 2,170,516 km (0.068 R)
• M5: 2,665,086 km (0.101 R)
• M6: 3,260,635 km (0.078 R)
• M7: 4,002,641 km (0.063 R)
• M8: 5,008,238 km (0.097 R)
• M9: 5,692,498 km (0.043 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.2

Radius: 9.1

Gravity: 10.89 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 4.02 AU - 4.66 AU

Year: 5838 Days

Day: 9.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,360,355 km

• M1: 140,772 km (0.025 R)
• M2: 631,752 km (0.072 R)
• M3: 1,192,594 km (0.086 R)
• M4: 2,543,613 km (0.085 R)
• M5: 3,001,831 km (0.07 R)
• M6: 4,443,954 km (0.027 R)
• M7: 8,875,193 km (0.037 R)
• M8: 9,261,754 km (0.028 R)
• M9: 15,059,718 km (0.066 R)
• M10: 15,610,239 km (0.112 R)
• M11: 16,364,960 km (0.119 R)
• M12: 21,490,183 km (0.048 R)
• M13: 21,876,145 km (0.1 R)
• M14: 23,465,922 km (0.093 R)
• M15: 24,205,983 km (0.104 R)
• M16: 25,473,825 km (0.041 R)
• M17: 26,607,776 km (0.082 R)
• M18: 30,405,019 km (0.093 R)
• M19: 33,712,329 km (0.072 R)
• M20: 36,590,742 km (0.07 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 289.4

Radius: 3.4

Gravity: 25.03 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 5.05 AU - 6.99 AU

Year: 9537 Days

Day: 21.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 65,360,355 km

• M1: 42,336 km (0.062 R)
• M2: 235,317 km (0.101 R)
• M3: 402,867 km (0.087 R)
• M4: 535,560 km (0.119 R)
• M5: 719,715 km (0.115 R)
• M6: 935,884 km (0.072 R)
• M7: 1,069,176 km (0.093 R)
• M8: 2,013,139 km (0.103 R)
• M9: 2,303,358 km (0.117 R)
• M10: 2,620,955 km (0.047 R)
• M11: 2,848,343 km (0.101 R)
• M12: 3,027,412 km (0.057 R)
• M13: 3,171,774 km (0.073 R)
• M14: 3,277,839 km (0.061 R)
• M15: 4,419,121 km (0.086 R)
• M16: 4,713,829 km (0.087 R)
• M17: 5,049,975 km (0.094 R)
• M18: 6,286,551 km (0.117 R)
• M19: 7,154,369 km (0.116 R)
• M20: 9,556,761 km (0.103 R)
• M21: 10,094,266 km (0.098 R)
• M22: 11,327,700 km (0.111 R)
• M23: 11,676,263 km (0.115 R)
• M24: 12,871,700 km (0.073 R)
• M25: 14,492,144 km (0.075 R)
• M26: 16,056,339 km (0.059 R)
• M27: 17,202,858 km (0.088 R)
• M28: 17,929,604 km (0.065 R)
• M29: 18,539,365 km (0.09 R)
• M30: 20,087,852 km (0.074 R)
• M31: 21,417,329 km (0.043 R)
• M32: 21,873,153 km (0.075 R)
• M33: 24,331,794 km (0.119 R)
• M34: 28,038,381 km (0.109 R)
• M35: 31,319,661 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 274.8

Radius: 5.8

Gravity: 8.17 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 6.07 AU - 8.77 AU

Year: 13050 Days

Day: 24.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 65,360,355 km

• M1: 73,004 km (0.058 R)
• M2: 254,616 km (0.059 R)
• M3: 440,566 km (0.107 R)
• M4: 812,915 km (0.106 R)
• M5: 1,047,783 km (0.043 R)
• M6: 1,402,031 km (0.116 R)
• M7: 2,366,489 km (0.093 R)
• M8: 3,041,026 km (0.109 R)
• M9: 4,282,239 km (0.068 R)
• M10: 4,503,793 km (0.095 R)
• M11: 5,435,639 km (0.118 R)
• M12: 5,662,728 km (0.113 R)
• M13: 6,170,613 km (0.115 R)
• M14: 7,553,047 km (0.054 R)
• M15: 8,423,407 km (0.116 R)
• M16: 9,312,767 km (0.087 R)
• M17: 11,172,119 km (0.087 R)
• M18: 11,699,750 km (0.076 R)
• M19: 12,188,636 km (0.082 R)
• M20: 12,522,090 km (0.076 R)
• M21: 15,156,359 km (0.117 R)
• M22: 15,477,246 km (0.097 R)
• M23: 17,081,234 km (0.063 R)
• M24: 17,781,053 km (0.088 R)
• M25: 21,248,283 km (0.09 R)
• M26: 22,386,873 km (0.053 R)
• M27: 24,257,295 km (0.083 R)
• M28: 25,590,810 km (0.059 R)
• M29: 26,413,898 km (0.05 R)
• M30: 30,286,687 km (0.114 R)
• M31: 31,622,447 km (0.055 R)
• M32: 40,471,759 km (0.077 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 816.7

Radius: 6

Gravity: 22.69 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 6.04 AU - 9.94 AU

Year: 14583 Days

Day: 23.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 65,360,355 km

• M1: 75,248 km (0.102 R)
• M2: 313,108 km (0.075 R)
• M3: 741,706 km (0.107 R)
• M4: 1,046,587 km (0.099 R)
• M5: 1,388,418 km (0.099 R)
• M6: 2,019,571 km (0.059 R)
• M7: 3,354,732 km (0.093 R)
• M8: 3,685,344 km (0.1 R)
• M9: 5,448,504 km (0.108 R)
• M10: 5,673,948 km (0.031 R)
• M11: 6,766,611 km (0.104 R)
• M12: 8,089,355 km (0.108 R)
• M13: 8,284,431 km (0.094 R)
• M14: 8,633,293 km (0.107 R)
• M15: 8,992,029 km (0.095 R)
• M16: 9,960,077 km (0.094 R)
• M17: 14,747,956 km (0.079 R)
• M18: 15,785,119 km (0.082 R)
• M19: 17,269,279 km (0.104 R)
• M20: 20,966,890 km (0.105 R)
• M21: 23,539,973 km (0.106 R)
• M22: 25,367,610 km (0.071 R)
• M23: 28,395,471 km (0.072 R)
• M24: 29,996,019 km (0.041 R)
• M25: 31,535,231 km (0.06 R)
• M26: 33,375,734 km (0.106 R)
• M27: 38,219,563 km (0.083 R)
• M28: 38,631,705 km (0.084 R)
• M29: 40,879,862 km (0.029 R)
• M30: 42,917,385 km (0.071 R)
• M31: 44,565,056 km (0.097 R)
• M32: 45,021,629 km (0.106 R)
• M33: 49,434,467 km (0.11 R)
• M34: 51,410,804 km (0.1 R)
• M35: 52,418,496 km (0.079 R)
• M36: 52,927,128 km (0.087 R)
• M37: 55,169,750 km (0.059 R)
• M38: 57,655,019 km (0.087 R)
• M39: 59,843,636 km (0.118 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 306 - 20,122 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit