🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.54 AU - 0.74 AU

Year: 326 Days

Day: 39.6 Hours

Environment

Temp: -128 °C

Axial Tilt: 35.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 57,725,365 km

• M1: 35,754 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373

Radius: 15

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.74 AU - 1.14 AU

Year: 579 Days

Day: 14.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 57,725,365 km

• M1: 187,596 km (0.107 R)
• M2: 686,654 km (0.102 R)
• M3: 1,702,125 km (0.099 R)
• M4: 2,260,723 km (0.089 R)
• M5: 3,113,880 km (0.096 R)
• M6: 4,119,925 km (0.077 R)
• M7: 4,706,947 km (0.081 R)
• M8: 5,365,627 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.3

Radius: 9.7

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.83 AU - 1.17 AU

Year: 636 Days

Day: 11.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,725,365 km

• M1: 120,875 km (0.112 R)
• M2: 466,446 km (0.106 R)
• M3: 872,156 km (0.113 R)
• M4: 1,411,456 km (0.092 R)
• M5: 1,752,090 km (0.057 R)
• M6: 2,141,494 km (0.074 R)
• M7: 2,476,443 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 363.2

Radius: 15

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.99 AU - 1.23 AU

Year: 744 Days

Day: 7.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,725,365 km

• M1: 190,288 km (0.103 R)
• M2: 802,742 km (0.083 R)
• M3: 1,409,511 km (0.105 R)
• M4: 2,105,141 km (0.079 R)
• M5: 2,625,891 km (0.066 R)
• M6: 3,221,441 km (0.107 R)
• M7: 3,988,578 km (0.105 R)
• M8: 4,672,689 km (0.119 R)
• M9: 5,658,988 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 489

Radius: 13.2

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.04 AU - 1.34 AU

Year: 825 Days

Day: 13.5 Hours

Environment

Temp: -169 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 57,725,365 km

• M1: 164,558 km (0.027 R)
• M2: 577,149 km (0.111 R)
• M3: 1,176,737 km (0.085 R)
• M4: 1,684,771 km (0.116 R)
• M5: 2,988,068 km (0.108 R)
• M6: 3,441,050 km (0.053 R)
• M7: 4,117,083 km (0.04 R)
• M8: 4,779,802 km (0.102 R)
• M9: 5,623,534 km (0.085 R)
• M10: 6,259,624 km (0.088 R)
• M11: 6,878,959 km (0.104 R)
• M12: 8,120,920 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 781.7

Radius: 8.7

Gravity: 10.33 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 3.09 AU - 4.31 AU

Year: 4525 Days

Day: 8.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 57,725,365 km

• M1: 112,049 km (0.114 R)
• M2: 417,228 km (0.105 R)
• M3: 1,081,144 km (0.079 R)
• M4: 1,962,724 km (0.056 R)
• M5: 2,479,734 km (0.096 R)
• M6: 3,807,266 km (0.068 R)
• M7: 5,788,390 km (0.112 R)
• M8: 6,149,520 km (0.041 R)
• M9: 6,493,744 km (0.095 R)
• M10: 7,324,312 km (0.096 R)
• M11: 7,928,238 km (0.08 R)
• M12: 9,316,656 km (0.113 R)
• M13: 10,905,535 km (0.084 R)
• M14: 11,179,299 km (0.039 R)
• M15: 11,645,745 km (0.106 R)
• M16: 13,225,948 km (0.06 R)
• M17: 15,683,093 km (0.087 R)
• M18: 16,745,986 km (0.07 R)
• M19: 17,543,043 km (0.114 R)
• M20: 19,411,820 km (0.087 R)
• M21: 20,085,908 km (0.055 R)
• M22: 24,229,769 km (0.086 R)
• M23: 25,169,543 km (0.07 R)
• M24: 26,624,382 km (0.083 R)
• M25: 27,456,445 km (0.106 R)
• M26: 28,049,002 km (0.119 R)
• M27: 28,650,236 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 655.9

Radius: 6.6

Gravity: 15.06 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 7.44 AU - 7.9 AU

Year: 13506 Days

Day: 19 Hours

Environment

Temp: -224 °C

Axial Tilt: 131 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 57,725,365 km

• M1: 83,625 km (0.102 R)
• M2: 418,276 km (0.11 R)
• M3: 783,444 km (0.088 R)
• M4: 1,242,111 km (0.089 R)
• M5: 1,685,669 km (0.099 R)
• M6: 1,935,796 km (0.102 R)
• M7: 2,268,652 km (0.074 R)
• M8: 2,574,729 km (0.112 R)
• M9: 3,423,098 km (0.116 R)
• M10: 4,054,850 km (0.052 R)
• M11: 5,025,890 km (0.071 R)
• M12: 5,729,449 km (0.079 R)
• M13: 6,739,982 km (0.081 R)
• M14: 9,008,335 km (0.099 R)
• M15: 12,408,994 km (0.091 R)
• M16: 13,230,436 km (0.074 R)
• M17: 14,020,462 km (0.061 R)
• M18: 16,354,787 km (0.107 R)
• M19: 18,528,743 km (0.118 R)
• M20: 23,630,480 km (0.075 R)
• M21: 24,595,386 km (0.102 R)
• M22: 25,687,002 km (0.098 R)
• M23: 26,091,813 km (0.056 R)
• M24: 27,647,781 km (0.052 R)
• M25: 29,154,979 km (0.093 R)
• M26: 29,706,248 km (0.089 R)
• M27: 31,172,157 km (0.097 R)
• M28: 31,864,795 km (0.098 R)
• M29: 40,582,013 km (0.057 R)
• M30: 43,951,406 km (0.099 R)
• M31: 57,725,330 km (0.057 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 272 - 10,527 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit