🌌 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: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.45 AU - 0.59 AU

Year: 242 Days

Day: 29.1 Hours

Environment

Temp: -110 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 770.3

Radius: 9.4

Gravity: 8.72 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.74 AU - 0.76 AU

Year: 419 Days

Day: 10.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 25,457,351 km

• M1: 117,734 km (0.103 R)
• M2: 483,201 km (0.092 R)
• M3: 806,781 km (0.079 R)
• M4: 1,130,960 km (0.065 R)
• M5: 1,678,039 km (0.072 R)
• M6: 1,971,999 km (0.074 R)
• M7: 2,309,791 km (0.039 R)
• M8: 3,252,258 km (0.062 R)
• M9: 3,701,949 km (0.035 R)
• M10: 4,096,438 km (0.081 R)
• M11: 4,446,647 km (0.108 R)
• M12: 5,772,383 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217.6

Radius: 11.2

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.76 AU - 0.98 AU

Year: 524 Days

Day: 11.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 25,457,351 km

• M1: 139,276 km (0.12 R)
• M2: 489,783 km (0.034 R)
• M3: 987,795 km (0.113 R)
• M4: 1,688,511 km (0.05 R)
• M5: 2,042,609 km (0.088 R)
• M6: 2,818,274 km (0.095 R)
• M7: 3,676,368 km (0.108 R)
• M8: 4,055,449 km (0.102 R)
• M9: 4,421,515 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 638.7

Radius: 8.8

Gravity: 8.25 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 1.44 AU - 2.26 AU

Year: 1625 Days

Day: 12.7 Hours

Environment

Temp: -176 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 25,457,351 km

• M1: 109,506 km (0.086 R)
• M2: 460,911 km (0.048 R)
• M3: 749,485 km (0.106 R)
• M4: 1,035,217 km (0.067 R)
• M5: 1,717,084 km (0.085 R)
• M6: 2,263,565 km (0.069 R)
• M7: 2,578,020 km (0.063 R)
• M8: 3,218,598 km (0.103 R)
• M9: 4,653,840 km (0.101 R)
• M10: 5,081,540 km (0.113 R)
• M11: 5,359,194 km (0.056 R)
• M12: 6,062,903 km (0.082 R)
• M13: 6,699,441 km (0.117 R)
• M14: 7,598,076 km (0.117 R)
• M15: 8,337,837 km (0.077 R)
• M16: 10,362,944 km (0.098 R)
• M17: 12,656,877 km (0.095 R)
• M18: 13,613,406 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 650

Radius: 9

Gravity: 8.02 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 2.15 AU - 2.89 AU

Year: 2583 Days

Day: 14.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 25,457,351 km

• M1: 113,096 km (0.085 R)
• M2: 394,639 km (0.097 R)
• M3: 699,968 km (0.068 R)
• M4: 1,309,281 km (0.11 R)
• M5: 1,796,820 km (0.114 R)
• M6: 2,265,211 km (0.086 R)
• M7: 2,736,444 km (0.036 R)
• M8: 3,254,502 km (0.065 R)
• M9: 3,610,545 km (0.117 R)
• M10: 4,132,641 km (0.114 R)
• M11: 5,137,340 km (0.075 R)
• M12: 5,823,995 km (0.087 R)
• M13: 6,405,332 km (0.076 R)
• M14: 6,909,327 km (0.077 R)
• M15: 7,379,214 km (0.118 R)
• M16: 7,870,494 km (0.105 R)
• M17: 9,440,074 km (0.082 R)
• M18: 11,368,391 km (0.061 R)
• M19: 12,966,246 km (0.036 R)
• M20: 14,329,382 km (0.082 R)
• M21: 15,045,806 km (0.078 R)
• M22: 15,735,602 km (0.035 R)
• M23: 16,088,503 km (0.081 R)
• M24: 16,498,102 km (0.074 R)
• M25: 16,862,223 km (0.03 R)
• M26: 17,445,206 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317.4

Radius: 8.8

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.73 AU - 2.97 AU

Year: 3107 Days

Day: 14.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,457,351 km

• M1: 109,506 km (0.039 R)
• M2: 389,702 km (0.11 R)
• M3: 809,624 km (0.096 R)
• M4: 1,249,142 km (0.117 R)
• M5: 1,798,166 km (0.092 R)
• M6: 2,098,260 km (0.104 R)
• M7: 2,378,307 km (0.085 R)
• M8: 2,756,490 km (0.115 R)
• M9: 3,158,310 km (0.082 R)
• M10: 3,528,415 km (0.079 R)
• M11: 3,852,744 km (0.085 R)
• M12: 4,837,995 km (0.084 R)
• M13: 5,424,568 km (0.084 R)
• M14: 5,735,283 km (0.104 R)
• M15: 6,418,796 km (0.095 R)
• M16: 7,269,409 km (0.083 R)
• M17: 8,764,341 km (0.057 R)
• M18: 9,226,748 km (0.079 R)
• M19: 15,299,973 km (0.057 R)
• M20: 16,711,129 km (0.05 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 925.3

Radius: 13.9

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 3.3 AU - 4.02 AU

Year: 4521 Days

Day: 13.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 25,457,351 km

• M1: 173,234 km (0.105 R)
• M2: 797,506 km (0.106 R)
• M3: 2,835,029 km (0.093 R)
• M4: 3,562,823 km (0.119 R)
• M5: 4,029,568 km (0.098 R)
• M6: 6,073,674 km (0.051 R)
• M7: 7,046,359 km (0.09 R)
• M8: 8,195,719 km (0.111 R)
• M9: 9,889,616 km (0.102 R)
• M10: 10,637,755 km (0.089 R)
• M11: 11,661,902 km (0.063 R)
• M12: 12,853,000 km (0.108 R)
• M13: 14,233,190 km (0.095 R)
• M14: 15,418,305 km (0.075 R)
• M15: 16,485,685 km (0.084 R)
• M16: 21,542,243 km (0.113 R)
• M17: 22,202,418 km (0.105 R)
• M18: 24,185,338 km (0.079 R)
• M19: 26,533,726 km (0.098 R)
• M20: 27,806,355 km (0.059 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 639.3

Radius: 14.6

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 3.5 AU - 4.02 AU

Year: 4708 Days

Day: 10.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 25,457,351 km

• M1: 181,612 km (0.075 R)
• M2: 648,656 km (0.116 R)
• M3: 1,308,233 km (0.093 R)
• M4: 2,817,227 km (0.116 R)
• M5: 4,422,412 km (0.051 R)
• M6: 5,154,395 km (0.086 R)
• M7: 6,480,729 km (0.103 R)
• M8: 6,959,293 km (0.04 R)
• M9: 17,909,408 km (0.086 R)
• M10: 18,410,412 km (0.076 R)
• M11: 18,920,989 km (0.093 R)
• M12: 21,336,097 km (0.072 R)
• M13: 24,790,162 km (0.063 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399.4

Radius: 9.6

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.91 AU - 3.99 AU

Year: 5069 Days

Day: 5.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 25,457,351 km

• M1: 129,701 km (0.12 R)
• M2: 612,603 km (0.119 R)
• M3: 918,980 km (0.027 R)
• M4: 1,262,606 km (0.062 R)
• M5: 1,956,740 km (0.061 R)
• M6: 2,750,058 km (0.064 R)
• M7: 3,785,873 km (0.084 R)
• M8: 9,655,795 km (0.105 R)
• M9: 13,141,126 km (0.06 R)
• M10: 14,192,350 km (0.112 R)
• M11: 15,625,198 km (0.041 R)
• M12: 20,698,062 km (0.11 R)
• M13: 22,119,092 km (0.031 R)
• M14: 23,459,938 km (0.068 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 210 - 10,458 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit