🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.48 AU - 0.54 AU

Year: 239 Days

Day: 45.3 Hours

Environment

Temp: -112 °C

Axial Tilt: 32 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.55 AU - 0.71 AU

Year: 328 Days

Day: 42 Hours

Environment

Temp: -130 °C

Axial Tilt: 1.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.1

Radius: 11.9

Gravity: 6.41 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.61 AU - 0.99 AU

Year: 469 Days

Day: 10.1 Hours

Environment

Temp: -147 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 62,703,840 km

• M1: 148,401 km (0.114 R)
• M2: 554,709 km (0.065 R)
• M3: 1,197,381 km (0.105 R)
• M4: 1,654,104 km (0.115 R)
• M5: 2,039,767 km (0.115 R)
• M6: 2,680,644 km (0.071 R)
• M7: 3,148,138 km (0.047 R)
• M8: 4,307,222 km (0.101 R)
• M9: 5,049,676 km (0.116 R)
• M10: 5,857,355 km (0.086 R)
• M11: 6,416,701 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.2

Radius: 9.4

Gravity: 11.3 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.73 AU - 1.07 AU

Year: 560 Days

Day: 9.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 62,703,840 km

• M1: 116,986 km (0.111 R)
• M2: 419,622 km (0.065 R)
• M3: 753,225 km (0.085 R)
• M4: 1,156,691 km (0.056 R)
• M5: 1,726,808 km (0.116 R)
• M6: 2,039,767 km (0.1 R)
• M7: 2,360,206 km (0.092 R)
• M8: 2,691,864 km (0.094 R)
• M9: 3,345,008 km (0.092 R)
• M10: 3,808,163 km (0.113 R)
• M11: 4,454,576 km (0.092 R)
• M12: 5,050,574 km (0.075 R)
• M13: 5,531,680 km (0.082 R)
• M14: 5,965,514 km (0.095 R)
• M15: 6,669,073 km (0.114 R)
• M16: 7,585,061 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.4

Radius: 14.7

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.87 AU - 0.93 AU

Year: 560 Days

Day: 12 Hours

Environment

Temp: -148 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,703,840 km

• M1: 183,856 km (0.104 R)
• M2: 697,276 km (0.115 R)
• M3: 1,168,958 km (0.092 R)
• M4: 1,953,299 km (0.111 R)
• M5: 2,495,442 km (0.062 R)
• M6: 3,061,670 km (0.104 R)
• M7: 3,812,502 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 601.8

Radius: 10

Gravity: 6.02 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 3.73 AU - 5.25 AU

Year: 6241 Days

Day: 10.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 58.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 62,703,840 km

• M1: 124,316 km (0.093 R)
• M2: 442,660 km (0.092 R)
• M3: 865,573 km (0.093 R)
• M4: 1,178,382 km (0.11 R)
• M5: 1,986,361 km (0.114 R)
• M6: 3,147,988 km (0.076 R)
• M7: 3,935,172 km (0.112 R)
• M8: 5,681,877 km (0.034 R)
• M9: 6,245,562 km (0.04 R)
• M10: 6,811,789 km (0.068 R)
• M11: 7,267,614 km (0.105 R)
• M12: 7,632,035 km (0.077 R)
• M13: 8,318,689 km (0.042 R)
• M14: 9,640,685 km (0.09 R)
• M15: 10,351,873 km (0.031 R)
• M16: 11,097,768 km (0.049 R)
• M17: 12,232,019 km (0.106 R)
• M18: 12,906,407 km (0.049 R)
• M19: 14,104,087 km (0.116 R)
• M20: 15,854,532 km (0.071 R)
• M21: 17,420,074 km (0.1 R)
• M22: 21,668,803 km (0.073 R)
• M23: 27,868,887 km (0.071 R)
• M24: 31,853,127 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 85.5

Radius: 13.5

Gravity: 0.47 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 4.7 AU - 5 AU

Year: 7007 Days

Day: 14.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 62,703,840 km

• M1: 248,931 km (0.108 R)
• M2: 775,815 km (0.058 R)
• M3: 1,236,726 km (0.076 R)
• M4: 1,677,890 km (0.099 R)
• M5: 3,600,073 km (0.081 R)
• M6: 4,294,955 km (0.082 R)
• M7: 6,814,931 km (0.106 R)
• M8: 10,419,492 km (0.092 R)
• M9: 10,993,798 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 459.1

Radius: 5.1

Gravity: 17.65 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 7.79 AU - 10.59 AU

Year: 18276 Days

Day: 15.8 Hours

Environment

Temp: -233 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 62,703,840 km

• M1: 68,366 km (0.089 R)
• M2: 270,623 km (0.047 R)
• M3: 453,581 km (0.047 R)
• M4: 651,798 km (0.118 R)
• M5: 1,947,615 km (0.053 R)
• M6: 2,294,083 km (0.088 R)
• M7: 3,236,400 km (0.035 R)
• M8: 3,446,585 km (0.034 R)
• M9: 3,666,045 km (0.085 R)
• M10: 3,894,631 km (0.081 R)
• M11: 4,255,461 km (0.113 R)
• M12: 4,838,145 km (0.073 R)
• M13: 5,658,091 km (0.112 R)
• M14: 8,470,830 km (0.119 R)
• M15: 11,301,521 km (0.11 R)
• M16: 12,412,135 km (0.101 R)
• M17: 12,863,173 km (0.109 R)
• M18: 13,661,577 km (0.098 R)
• M19: 14,492,443 km (0.096 R)
• M20: 15,429,973 km (0.111 R)
• M21: 16,484,189 km (0.119 R)
• M22: 20,197,209 km (0.11 R)
• M23: 20,462,894 km (0.092 R)
• M24: 23,541,319 km (0.082 R)
• M25: 25,549,820 km (0.117 R)
• M26: 26,914,901 km (0.038 R)
• M27: 29,675,430 km (0.094 R)
• M28: 35,109,274 km (0.057 R)
• M29: 35,493,441 km (0.107 R)
• M30: 47,267,392 km (0.058 R)
• M31: 49,159,506 km (0.075 R)
• M32: 50,774,415 km (0.105 R)
• M33: 51,760,115 km (0.115 R)
• M34: 61,955,210 km (0.107 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 210 - 19,685 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit