🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.59

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 12.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,054,952 km

• M1: 79,287 km (0.08 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.9

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.48 AU - 0.72 AU

Year: 305 Days

Day: 35.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 63,054,952 km

• M1: 40,092 km (0.053 R)
• M2: 58,194 km (0.102 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.78

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.55 AU - 0.73 AU

Year: 336 Days

Day: 32.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 122.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,054,952 km

• M1: 44,431 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158

Radius: 11.5

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.79 AU - 0.95 AU

Year: 532 Days

Day: 5 Hours

Environment

Temp: -158 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 63,054,952 km

• M1: 143,315 km (0.099 R)
• M2: 501,751 km (0.082 R)
• M3: 918,681 km (0.066 R)
• M4: 1,340,397 km (0.079 R)
• M5: 1,969,755 km (0.101 R)
• M6: 3,630,591 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 41.2

Radius: 10.7

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.77 AU - 1.17 AU

Year: 627 Days

Day: 7.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (2)

Outer Limit: 63,054,952 km

• M1: 135,087 km (0.062 R)
• M2: 850,913 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 830.5

Radius: 13.7

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.28 AU - 2.54 AU

Year: 2454 Days

Day: 7.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 63,054,952 km

• M1: 171,589 km (0.052 R)
• M2: 833,559 km (0.073 R)
• M3: 1,932,804 km (0.072 R)
• M4: 2,868,090 km (0.071 R)
• M5: 3,946,990 km (0.095 R)
• M6: 5,651,060 km (0.109 R)
• M7: 6,171,959 km (0.105 R)
• M8: 7,523,427 km (0.099 R)
• M9: 8,450,933 km (0.091 R)
• M10: 9,133,997 km (0.086 R)
• M11: 10,152,011 km (0.069 R)
• M12: 12,499,800 km (0.06 R)
• M13: 13,206,799 km (0.05 R)
• M14: 13,940,128 km (0.097 R)
• M15: 15,791,102 km (0.038 R)
• M16: 17,636,392 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.9

Radius: 14.1

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.67 AU - 2.79 AU

Year: 2959 Days

Day: 14.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 63,054,952 km

• M1: 180,116 km (0.112 R)
• M2: 763,248 km (0.118 R)
• M3: 1,342,192 km (0.059 R)
• M4: 2,777,135 km (0.117 R)
• M5: 5,312,520 km (0.094 R)
• M6: 5,819,806 km (0.115 R)
• M7: 6,641,547 km (0.097 R)
• M8: 7,426,487 km (0.043 R)
• M9: 8,333,050 km (0.057 R)
• M10: 10,226,361 km (0.083 R)
• M11: 10,868,585 km (0.029 R)
• M12: 12,194,321 km (0.093 R)
• M13: 12,794,507 km (0.119 R)
• M14: 13,372,404 km (0.098 R)
• M15: 14,097,505 km (0.097 R)

Asteroid Belt

Center: 4.76 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 6.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 682.2

Radius: 3.9

Gravity: 44.85 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 6.7 AU - 6.86 AU

Year: 11581 Days

Day: 18.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 63,054,952 km

• M1: 49,517 km (0.085 R)
• M2: 350,957 km (0.119 R)
• M3: 715,676 km (0.093 R)
• M4: 1,169,407 km (0.119 R)
• M5: 1,402,480 km (0.073 R)
• M6: 1,544,897 km (0.07 R)
• M7: 1,961,078 km (0.034 R)
• M8: 2,271,195 km (0.04 R)
• M9: 2,655,512 km (0.099 R)
• M10: 3,201,095 km (0.074 R)
• M11: 3,449,278 km (0.076 R)
• M12: 3,900,316 km (0.091 R)
• M13: 4,510,525 km (0.112 R)
• M14: 4,727,442 km (0.106 R)
• M15: 5,917,643 km (0.117 R)
• M16: 6,102,696 km (0.092 R)
• M17: 6,680,742 km (0.116 R)
• M18: 9,162,570 km (0.099 R)
• M19: 9,764,403 km (0.108 R)
• M20: 10,232,644 km (0.041 R)
• M21: 11,960,799 km (0.095 R)
• M22: 12,256,554 km (0.102 R)
• M23: 12,436,520 km (0.039 R)
• M24: 16,852,200 km (0.068 R)
• M25: 25,172,983 km (0.053 R)
• M26: 26,051,572 km (0.102 R)
• M27: 26,249,639 km (0.096 R)
• M28: 27,869,784 km (0.066 R)
• M29: 28,915,623 km (0.066 R)
• M30: 30,204,857 km (0.065 R)
• M31: 30,423,270 km (0.102 R)
• M32: 32,209,618 km (0.114 R)
• M33: 36,729,868 km (0.054 R)
• M34: 42,882,529 km (0.108 R)
• M35: 43,435,742 km (0.073 R)
• M36: 47,590,224 km (0.106 R)
• M37: 48,332,379 km (0.1 R)
• M38: 49,384,052 km (0.081 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 622.4

Radius: 4.1

Gravity: 37.03 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 6.79 AU - 9.91 AU

Year: 15828 Days

Day: 15.9 Hours

Environment

Temp: -236 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 63,054,952 km

• M1: 51,013 km (0.039 R)
• M2: 778,208 km (0.07 R)
• M3: 1,059,303 km (0.106 R)
• M4: 1,478,925 km (0.092 R)
• M5: 1,946,119 km (0.083 R)
• M6: 3,139,910 km (0.089 R)
• M7: 3,453,916 km (0.079 R)
• M8: 4,554,058 km (0.116 R)
• M9: 4,685,555 km (0.031 R)
• M10: 5,272,876 km (0.105 R)
• M11: 6,888,832 km (0.111 R)
• M12: 7,738,997 km (0.06 R)
• M13: 8,656,780 km (0.085 R)
• M14: 11,966,184 km (0.098 R)
• M15: 15,955,510 km (0.07 R)
• M16: 16,106,904 km (0.086 R)
• M17: 16,567,067 km (0.11 R)
• M18: 16,957,218 km (0.095 R)
• M19: 18,246,901 km (0.116 R)
• M20: 19,341,658 km (0.104 R)
• M21: 24,460,000 km (0.1 R)
• M22: 25,893,447 km (0.1 R)
• M23: 28,590,846 km (0.119 R)
• M24: 30,528,288 km (0.113 R)
• M25: 33,533,859 km (0.077 R)
• M26: 34,535,865 km (0.059 R)
• M27: 42,840,193 km (0.105 R)
• M28: 44,616,667 km (0.081 R)
• M29: 45,371,239 km (0.052 R)
• M30: 48,633,071 km (0.092 R)
• M31: 51,056,257 km (0.113 R)
• M32: 52,047,792 km (0.092 R)
• M33: 53,898,617 km (0.079 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 283 - 14,863 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit