🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.51 AU - 0.65 AU

Year: 285 Days

Day: 12.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 4.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,601,592 km

• M1: 375,191 km (0.111 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.7

Radius: 10.8

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.84 AU - 1 AU

Year: 570 Days

Day: 11.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,601,592 km

• M1: 134,937 km (0.06 R)
• M2: 516,113 km (0.117 R)
• M3: 1,056,610 km (0.099 R)
• M4: 1,442,572 km (0.094 R)
• M5: 1,797,718 km (0.109 R)
• M6: 2,366,938 km (0.076 R)
• M7: 3,120,612 km (0.075 R)
• M8: 3,840,925 km (0.083 R)
• M9: 5,817,562 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 63.6

Radius: 10.6

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.88 AU - 1.06 AU

Year: 617 Days

Day: 8.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 31,601,592 km

• M1: 134,638 km (0.11 R)
• M2: 725,400 km (0.086 R)
• M3: 1,111,363 km (0.1 R)
• M4: 1,606,980 km (0.082 R)
• M5: 2,153,013 km (0.075 R)
• M6: 2,768,309 km (0.117 R)
• M7: 3,104,006 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.7

Radius: 14

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 2.34 AU - 3.72 AU

Year: 3405 Days

Day: 12.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 31,601,592 km

• M1: 174,132 km (0.103 R)
• M2: 686,505 km (0.093 R)
• M3: 1,153,250 km (0.059 R)
• M4: 1,690,157 km (0.07 R)
• M5: 3,549,209 km (0.107 R)
• M6: 4,627,810 km (0.068 R)
• M7: 6,437,645 km (0.093 R)
• M8: 9,498,567 km (0.081 R)
• M9: 10,144,680 km (0.071 R)
• M10: 11,286,860 km (0.119 R)
• M11: 12,854,496 km (0.111 R)
• M12: 13,378,538 km (0.119 R)
• M13: 15,423,241 km (0.107 R)
• M14: 15,965,534 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.6

Radius: 8.3

Gravity: 8.6 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 3.02 AU - 4.52 AU

Year: 4726 Days

Day: 8.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 31,601,592 km

• M1: 103,971 km (0.07 R)
• M2: 594,053 km (0.071 R)
• M3: 1,402,181 km (0.082 R)
• M4: 2,222,725 km (0.099 R)
• M5: 3,118,517 km (0.091 R)
• M6: 3,830,603 km (0.115 R)
• M7: 4,951,839 km (0.067 R)
• M8: 5,658,988 km (0.082 R)
• M9: 6,066,792 km (0.107 R)
• M10: 9,094,503 km (0.048 R)
• M11: 10,843,751 km (0.113 R)
• M12: 11,245,870 km (0.077 R)
• M13: 12,175,172 km (0.104 R)
• M14: 13,871,313 km (0.093 R)
• M15: 16,234,660 km (0.09 R)
• M16: 17,787,037 km (0.115 R)
• M17: 18,790,091 km (0.062 R)
• M18: 20,635,530 km (0.074 R)
• M19: 22,526,597 km (0.075 R)
• M20: 22,888,923 km (0.061 R)
• M21: 23,551,193 km (0.065 R)
• M22: 26,408,363 km (0.105 R)
• M23: 26,730,447 km (0.084 R)
• M24: 27,136,755 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.4

Radius: 13.4

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 3.04 AU - 4.72 AU

Year: 4935 Days

Day: 6.7 Hours

Environment

Temp: -201 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,601,592 km

• M1: 169,794 km (0.1 R)
• M2: 656,136 km (0.081 R)
• M3: 1,084,884 km (0.065 R)
• M4: 1,587,981 km (0.063 R)
• M5: 2,196,695 km (0.107 R)
• M6: 3,559,233 km (0.076 R)
• M7: 4,613,748 km (0.056 R)
• M8: 6,304,952 km (0.083 R)
• M9: 6,904,690 km (0.082 R)
• M10: 7,364,703 km (0.061 R)
• M11: 8,030,563 km (0.106 R)
• M12: 9,138,485 km (0.098 R)
• M13: 10,457,190 km (0.08 R)
• M14: 12,227,980 km (0.101 R)
• M15: 16,406,398 km (0.045 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.4

Radius: 12.4

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 3.84 AU - 4.42 AU

Year: 5419 Days

Day: 8.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 31,601,592 km

• M1: 154,684 km (0.077 R)
• M2: 567,574 km (0.087 R)
• M3: 1,315,414 km (0.03 R)
• M4: 1,825,842 km (0.111 R)
• M5: 3,136,020 km (0.078 R)
• M6: 3,653,778 km (0.113 R)
• M7: 4,889,158 km (0.095 R)
• M8: 7,292,148 km (0.103 R)
• M9: 8,991,281 km (0.092 R)
• M10: 9,654,897 km (0.074 R)
• M11: 10,217,834 km (0.064 R)
• M12: 12,845,820 km (0.078 R)
• M13: 21,584,729 km (0.103 R)
• M14: 22,100,243 km (0.09 R)
• M15: 24,721,796 km (0.088 R)
• M16: 25,612,651 km (0.084 R)
• M17: 29,571,460 km (0.109 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: 368 - 15,546 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit