🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.1

Radius: 1.35

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 25.8 Hours

Environment

Temp: -129 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 222.6

Radius: 13.4

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.57 AU - 0.91 AU

Year: 418 Days

Day: 6.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 23,593,878 km

• M1: 166,652 km (0.117 R)
• M2: 719,715 km (0.111 R)
• M3: 1,176,886 km (0.117 R)
• M4: 1,731,595 km (0.104 R)
• M5: 2,223,772 km (0.077 R)
• M6: 2,712,359 km (0.097 R)
• M7: 3,174,168 km (0.078 R)
• M8: 3,591,994 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 974

Radius: 12.4

Gravity: 6.33 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.65 AU - 0.87 AU

Year: 435 Days

Day: 9.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 23,593,878 km

• M1: 154,235 km (0.034 R)
• M2: 596,297 km (0.105 R)
• M3: 1,069,475 km (0.113 R)
• M4: 1,491,042 km (0.104 R)
• M5: 2,000,124 km (0.071 R)
• M6: 2,454,452 km (0.11 R)
• M7: 3,056,733 km (0.111 R)
• M8: 4,179,765 km (0.118 R)
• M9: 4,650,549 km (0.099 R)
• M10: 5,091,564 km (0.028 R)
• M11: 5,560,403 km (0.046 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 983.6

Radius: 10.3

Gravity: 9.27 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.76 AU - 0.78 AU

Year: 443 Days

Day: 8 Hours

Environment

Temp: -137 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 23,593,878 km

• M1: 128,056 km (0.052 R)
• M2: 456,573 km (0.058 R)
• M3: 796,160 km (0.063 R)
• M4: 1,397,992 km (0.075 R)
• M5: 2,681,243 km (0.089 R)
• M6: 3,185,387 km (0.075 R)
• M7: 3,646,299 km (0.119 R)
• M8: 4,137,279 km (0.072 R)
• M9: 4,625,566 km (0.061 R)
• M10: 5,285,442 km (0.078 R)
• M11: 6,555,977 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111

Radius: 14.4

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.7 AU - 0.92 AU

Year: 478 Days

Day: 7.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 23,593,878 km

• M1: 179,069 km (0.067 R)
• M2: 638,035 km (0.089 R)
• M3: 1,096,253 km (0.109 R)
• M4: 1,545,047 km (0.095 R)
• M5: 2,233,496 km (0.106 R)
• M6: 2,959,794 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.8

Radius: 13

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.85 AU - 1.39 AU

Year: 778 Days

Day: 10.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 23,593,878 km

• M1: 161,715 km (0.047 R)
• M2: 696,827 km (0.059 R)
• M3: 1,108,221 km (0.04 R)
• M4: 1,623,436 km (0.026 R)
• M5: 2,054,128 km (0.111 R)
• M6: 3,247,171 km (0.067 R)
• M7: 3,789,613 km (0.092 R)
• M8: 4,243,942 km (0.115 R)
• M9: 5,790,634 km (0.085 R)
• M10: 7,685,591 km (0.116 R)
• M11: 8,548,920 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.8

Radius: 12.3

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.99 AU - 1.61 AU

Year: 972 Days

Day: 11.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 23,593,878 km

• M1: 153,039 km (0.069 R)
• M2: 559,795 km (0.05 R)
• M3: 1,227,600 km (0.115 R)
• M4: 1,636,900 km (0.08 R)
• M5: 2,378,905 km (0.068 R)
• M6: 3,005,720 km (0.095 R)
• M7: 3,584,365 km (0.068 R)
• M8: 3,969,131 km (0.118 R)
• M9: 4,966,051 km (0.113 R)
• M10: 6,012,488 km (0.076 R)
• M11: 6,424,181 km (0.083 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741.3

Radius: 14.1

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.24 AU - 2 AU

Year: 1353 Days

Day: 8 Hours

Environment

Temp: -181 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 23,593,878 km

• M1: 175,927 km (0.12 R)
• M2: 696,079 km (0.117 R)
• M3: 1,242,859 km (0.115 R)
• M4: 1,803,253 km (0.096 R)
• M5: 2,268,951 km (0.094 R)
• M6: 3,389,289 km (0.107 R)
• M7: 5,317,157 km (0.061 R)
• M8: 7,100,364 km (0.053 R)
• M9: 7,757,248 km (0.101 R)
• M10: 8,283,533 km (0.109 R)
• M11: 8,863,075 km (0.118 R)
• M12: 9,878,845 km (0.096 R)
• M13: 10,800,368 km (0.057 R)

Planet 9 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.3

Radius: 10.9

Gravity: 5.85 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 1.44 AU - 1.88 AU

Year: 1403 Days

Day: 15 Hours

Environment

Temp: -177 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 23,593,878 km

• M1: 135,536 km (0.077 R)
• M2: 569,369 km (0.084 R)
• M3: 978,071 km (0.082 R)
• M4: 1,480,421 km (0.09 R)
• M5: 1,934,899 km (0.085 R)
• M6: 2,324,153 km (0.063 R)
• M7: 3,071,543 km (0.088 R)
• M8: 3,654,078 km (0.107 R)
• M9: 4,327,268 km (0.102 R)
• M10: 4,761,850 km (0.099 R)
• M11: 7,001,330 km (0.074 R)
• M12: 8,012,312 km (0.064 R)
• M13: 8,787,977 km (0.098 R)
• M14: 10,322,702 km (0.091 R)
• M15: 10,826,248 km (0.052 R)
• M16: 11,416,861 km (0.12 R)
• M17: 11,774,250 km (0.11 R)
• M18: 12,436,370 km (0.061 R)
• M19: 13,006,936 km (0.101 R)

Planet 10 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.2

Radius: 11.3

Gravity: 7.72 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.54 AU - 2.82 AU

Year: 2878 Days

Day: 11.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 23,593,878 km

• M1: 143,165 km (0.082 R)
• M2: 602,131 km (0.059 R)
• M3: 983,307 km (0.097 R)
• M4: 1,417,290 km (0.088 R)
• M5: 2,124,739 km (0.056 R)
• M6: 2,591,035 km (0.113 R)
• M7: 3,381,510 km (0.042 R)
• M8: 4,149,995 km (0.11 R)
• M9: 4,669,398 km (0.097 R)
• M10: 5,181,173 km (0.081 R)
• M11: 7,257,741 km (0.097 R)
• M12: 7,678,859 km (0.058 R)
• M13: 8,894,491 km (0.102 R)
• M14: 10,194,048 km (0.077 R)
• M15: 12,193,722 km (0.064 R)
• M16: 13,310,022 km (0.105 R)
• M17: 14,442,328 km (0.045 R)
• M18: 14,902,641 km (0.066 R)
• M19: 15,267,360 km (0.072 R)
• M20: 18,048,385 km (0.076 R)
• M21: 18,702,726 km (0.1 R)
• M22: 19,496,492 km (0.072 R)
• M23: 20,376,128 km (0.079 R)
• M24: 22,012,579 km (0.098 R)
• M25: 22,554,273 km (0.097 R)
• M26: 23,453,505 km (0.098 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: 226 - 16,603 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit