🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.53 AU - 0.55 AU

Year: 260 Days

Day: 38.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.52

Radius: 1.18

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.55 AU - 0.63 AU

Year: 297 Days

Day: 36.9 Hours

Environment

Temp: -125 °C

Axial Tilt: 9.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.87

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.61 AU - 0.63 AU

Year: 320 Days

Day: 25.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 22.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.4

Radius: 14.1

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.77 AU - 1.17 AU

Year: 627 Days

Day: 5.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 64,297,689 km

• M1: 175,628 km (0.108 R)
• M2: 644,916 km (0.043 R)
• M3: 1,723,517 km (0.112 R)
• M4: 2,169,618 km (0.106 R)
• M5: 2,749,310 km (0.105 R)
• M6: 3,486,079 km (0.088 R)
• M7: 4,612,402 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 597.4

Radius: 8.3

Gravity: 8.67 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.11 AU - 1.45 AU

Year: 950 Days

Day: 9.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,297,689 km

• M1: 108,458 km (0.098 R)
• M2: 389,702 km (0.049 R)
• M3: 895,792 km (0.095 R)
• M4: 1,303,446 km (0.089 R)
• M5: 1,924,427 km (0.119 R)
• M6: 2,318,468 km (0.105 R)
• M7: 3,016,791 km (0.071 R)
• M8: 3,283,075 km (0.093 R)
• M9: 3,697,311 km (0.043 R)
• M10: 4,342,228 km (0.074 R)
• M11: 5,004,946 km (0.071 R)
• M12: 5,998,127 km (0.081 R)
• M13: 6,486,863 km (0.107 R)
• M14: 6,910,225 km (0.112 R)
• M15: 8,526,031 km (0.073 R)
• M16: 9,254,573 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726.6

Radius: 12.3

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.14 AU - 1.68 AU

Year: 1098 Days

Day: 10.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,297,689 km

• M1: 153,039 km (0.092 R)
• M2: 550,371 km (0.071 R)
• M3: 1,101,340 km (0.109 R)
• M4: 1,486,105 km (0.103 R)
• M5: 2,012,989 km (0.104 R)
• M6: 2,839,816 km (0.085 R)
• M7: 3,493,858 km (0.089 R)
• M8: 4,402,067 km (0.072 R)
• M9: 4,950,044 km (0.116 R)
• M10: 5,400,782 km (0.084 R)
• M11: 6,205,768 km (0.096 R)
• M12: 6,944,184 km (0.107 R)
• M13: 7,896,374 km (0.114 R)
• M14: 8,680,117 km (0.118 R)
• M15: 10,028,742 km (0.084 R)
• M16: 10,850,483 km (0.078 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407

Radius: 15

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.92 AU - 2.5 AU

Year: 2155 Days

Day: 14.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,297,689 km

• M1: 188,493 km (0.092 R)
• M2: 686,505 km (0.092 R)
• M3: 1,172,099 km (0.073 R)
• M4: 1,767,948 km (0.108 R)
• M5: 2,848,643 km (0.072 R)
• M6: 3,970,178 km (0.051 R)
• M7: 4,742,402 km (0.095 R)
• M8: 5,369,516 km (0.107 R)
• M9: 6,842,457 km (0.104 R)
• M10: 7,452,816 km (0.107 R)
• M11: 9,570,075 km (0.105 R)
• M12: 10,266,902 km (0.044 R)
• M13: 10,855,569 km (0.077 R)
• M14: 11,466,826 km (0.049 R)
• M15: 13,277,260 km (0.111 R)
• M16: 13,851,716 km (0.097 R)
• M17: 14,357,207 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.6

Radius: 10.1

Gravity: 7.83 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 3.1 AU - 3.72 AU

Year: 4131 Days

Day: 12.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 64,297,689 km

• M1: 125,662 km (0.118 R)
• M2: 555,606 km (0.071 R)
• M3: 1,004,550 km (0.07 R)
• M4: 1,829,432 km (0.035 R)
• M5: 2,355,867 km (0.102 R)
• M6: 2,801,819 km (0.054 R)
• M7: 4,836,350 km (0.093 R)
• M8: 5,230,241 km (0.11 R)
• M9: 5,963,869 km (0.08 R)
• M10: 7,157,510 km (0.098 R)
• M11: 8,466,192 km (0.079 R)
• M12: 9,886,474 km (0.103 R)
• M13: 12,450,582 km (0.088 R)
• M14: 14,929,419 km (0.085 R)
• M15: 15,824,164 km (0.111 R)
• M16: 16,401,312 km (0.052 R)
• M17: 16,872,994 km (0.117 R)
• M18: 17,232,777 km (0.093 R)
• M19: 19,044,108 km (0.089 R)
• M20: 22,531,833 km (0.115 R)
• M21: 23,633,621 km (0.12 R)
• M22: 24,008,663 km (0.078 R)
• M23: 25,313,904 km (0.104 R)
• M24: 26,343,587 km (0.108 R)
• M25: 26,746,902 km (0.088 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 239.7

Radius: 7.3

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 7.22 AU - 9.74 AU

Year: 16200 Days

Day: 24.6 Hours

Environment

Temp: -234 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,297,689 km

• M1: 93,499 km (0.082 R)
• M2: 440,865 km (0.034 R)
• M3: 2,465,223 km (0.113 R)
• M4: 2,806,905 km (0.073 R)
• M5: 3,319,128 km (0.083 R)
• M6: 3,660,361 km (0.102 R)
• M7: 4,106,013 km (0.05 R)
• M8: 5,494,730 km (0.089 R)
• M9: 6,591,282 km (0.112 R)
• M10: 7,291,400 km (0.091 R)
• M11: 8,083,072 km (0.066 R)
• M12: 9,304,838 km (0.09 R)
• M13: 11,172,867 km (0.059 R)
• M14: 11,497,793 km (0.108 R)
• M15: 22,327,333 km (0.094 R)
• M16: 28,546,565 km (0.117 R)
• M17: 32,981,992 km (0.118 R)
• M18: 33,538,945 km (0.057 R)
• M19: 41,230,520 km (0.067 R)
• M20: 41,617,380 km (0.083 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 446.7

Radius: 6.9

Gravity: 9.38 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 8.21 AU - 10.81 AU

Year: 19239 Days

Day: 21.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 64,297,689 km

• M1: 88,861 km (0.105 R)
• M2: 479,312 km (0.06 R)
• M3: 1,163,123 km (0.116 R)
• M4: 1,751,043 km (0.103 R)
• M5: 2,331,034 km (0.085 R)
• M6: 2,565,304 km (0.064 R)
• M7: 3,208,276 km (0.107 R)
• M8: 6,376,759 km (0.089 R)
• M9: 9,973,840 km (0.117 R)
• M10: 13,273,520 km (0.118 R)
• M11: 14,589,084 km (0.098 R)
• M12: 20,010,062 km (0.116 R)
• M13: 21,828,573 km (0.084 R)
• M14: 23,360,455 km (0.119 R)
• M15: 25,790,823 km (0.101 R)
• M16: 26,423,771 km (0.112 R)
• M17: 28,946,141 km (0.076 R)
• M18: 30,440,624 km (0.092 R)
• M19: 32,839,126 km (0.078 R)
• M20: 36,010,900 km (0.105 R)
• M21: 39,799,018 km (0.111 R)
• M22: 42,515,565 km (0.069 R)
• M23: 44,745,621 km (0.081 R)
• M24: 51,071,516 km (0.096 R)
• M25: 51,735,132 km (0.05 R)
• M26: 56,365,486 km (0.114 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 426 - 19,662 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit