🌌 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: 0.98

Radius: 0.99

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.48 AU - 0.68 AU

Year: 290 Days

Day: 41 Hours

Environment

Temp: -133 °C

Axial Tilt: 38 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 877.9

Radius: 13.6

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.79 AU - 0.83 AU

Year: 478 Days

Day: 12.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 38,672,011 km

• M1: 169,195 km (0.041 R)
• M2: 613,650 km (0.112 R)
• M3: 1,120,787 km (0.067 R)
• M4: 1,614,311 km (0.118 R)
• M5: 2,127,880 km (0.075 R)
• M6: 2,635,316 km (0.052 R)
• M7: 3,211,717 km (0.116 R)
• M8: 3,672,329 km (0.059 R)
• M9: 4,163,159 km (0.032 R)
• M10: 4,666,706 km (0.066 R)
• M11: 6,351,327 km (0.105 R)
• M12: 6,819,718 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589

Radius: 11.9

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.32 AU - 1.9 AU

Year: 1340 Days

Day: 13.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,672,011 km

• M1: 148,102 km (0.108 R)
• M2: 764,744 km (0.114 R)
• M3: 1,983,668 km (0.08 R)
• M4: 3,805,770 km (0.042 R)
• M5: 4,828,720 km (0.109 R)
• M6: 5,699,230 km (0.093 R)
• M7: 6,251,845 km (0.081 R)
• M8: 7,135,070 km (0.093 R)
• M9: 8,827,920 km (0.045 R)
• M10: 10,001,964 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.7

Radius: 14

Gravity: 4.71 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 4.29 AU - 4.39 AU

Year: 5931 Days

Day: 13.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 38,672,011 km

• M1: 174,132 km (0.075 R)
• M2: 644,617 km (0.12 R)
• M3: 1,498,671 km (0.065 R)
• M4: 1,938,639 km (0.113 R)
• M5: 3,342,615 km (0.106 R)
• M6: 4,630,952 km (0.066 R)
• M7: 6,464,274 km (0.076 R)
• M8: 7,026,313 km (0.086 R)
• M9: 8,700,163 km (0.054 R)
• M10: 11,361,210 km (0.03 R)
• M11: 11,973,066 km (0.08 R)
• M12: 13,318,698 km (0.111 R)
• M13: 13,941,923 km (0.116 R)
• M14: 17,689,948 km (0.044 R)
• M15: 20,235,655 km (0.071 R)
• M16: 23,178,395 km (0.086 R)
• M17: 23,915,164 km (0.107 R)
• M18: 25,869,062 km (0.106 R)
• M19: 28,481,789 km (0.036 R)
• M20: 29,708,192 km (0.111 R)
• M21: 31,964,128 km (0.073 R)
• M22: 35,289,539 km (0.039 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 191.3

Radius: 9.4

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 4.94 AU - 5.36 AU

Year: 7667 Days

Day: 6.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 38,672,011 km

• M1: 117,285 km (0.098 R)
• M2: 510,578 km (0.104 R)
• M3: 872,904 km (0.12 R)
• M4: 1,944,174 km (0.12 R)
• M5: 3,343,961 km (0.06 R)
• M6: 5,058,353 km (0.048 R)
• M7: 5,428,757 km (0.093 R)
• M8: 5,960,578 km (0.098 R)
• M9: 6,495,988 km (0.045 R)
• M10: 8,441,808 km (0.088 R)
• M11: 8,737,712 km (0.069 R)
• M12: 9,311,420 km (0.104 R)
• M13: 9,627,521 km (0.111 R)
• M14: 12,468,683 km (0.092 R)
• M15: 14,418,243 km (0.117 R)
• M16: 15,714,359 km (0.1 R)
• M17: 16,969,186 km (0.116 R)
• M18: 19,741,833 km (0.046 R)
• M19: 23,963,784 km (0.117 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 405.5

Radius: 4.6

Gravity: 19.16 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 5.86 AU - 8.22 AU

Year: 12254 Days

Day: 22.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 38,672,011 km

• M1: 57,296 km (0.05 R)
• M2: 279,449 km (0.031 R)
• M3: 471,383 km (0.052 R)
• M4: 624,571 km (0.112 R)
• M5: 923,468 km (0.119 R)
• M6: 1,565,542 km (0.067 R)
• M7: 1,866,383 km (0.111 R)
• M8: 2,445,925 km (0.088 R)
• M9: 3,299,830 km (0.088 R)
• M10: 4,625,865 km (0.059 R)
• M11: 4,928,203 km (0.097 R)
• M12: 5,880,244 km (0.069 R)
• M13: 6,454,999 km (0.083 R)
• M14: 7,508,467 km (0.115 R)
• M15: 7,715,361 km (0.084 R)
• M16: 10,099,352 km (0.076 R)
• M17: 11,676,862 km (0.12 R)
• M18: 15,178,499 km (0.096 R)
• M19: 15,643,300 km (0.049 R)
• M20: 16,117,675 km (0.039 R)
• M21: 20,583,919 km (0.107 R)
• M22: 22,153,799 km (0.083 R)
• M23: 26,567,235 km (0.099 R)
• M24: 32,946,388 km (0.101 R)
• M25: 33,389,796 km (0.031 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 885.7

Radius: 5.5

Gravity: 29.28 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 5.98 AU - 9.56 AU

Year: 14208 Days

Day: 23.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 38,672,011 km

• M1: 68,516 km (0.067 R)
• M2: 245,490 km (0.108 R)
• M3: 506,538 km (0.105 R)
• M4: 870,510 km (0.114 R)
• M5: 1,098,497 km (0.082 R)
• M6: 1,337,405 km (0.098 R)
• M7: 1,709,904 km (0.117 R)
• M8: 2,129,077 km (0.039 R)
• M9: 4,579,191 km (0.092 R)
• M10: 5,237,421 km (0.04 R)
• M11: 6,957,049 km (0.111 R)
• M12: 7,777,444 km (0.052 R)
• M13: 8,260,196 km (0.117 R)
• M14: 8,813,858 km (0.097 R)
• M15: 9,939,432 km (0.119 R)
• M16: 11,896,471 km (0.075 R)
• M17: 12,149,890 km (0.108 R)
• M18: 12,406,899 km (0.079 R)
• M19: 14,668,071 km (0.087 R)
• M20: 15,705,233 km (0.095 R)
• M21: 19,897,414 km (0.029 R)
• M22: 21,352,104 km (0.113 R)
• M23: 21,538,802 km (0.096 R)
• M24: 22,296,515 km (0.079 R)
• M25: 23,071,881 km (0.046 R)
• M26: 23,367,187 km (0.102 R)
• M27: 24,676,169 km (0.092 R)
• M28: 29,238,754 km (0.097 R)
• M29: 37,358,328 km (0.083 R)
• M30: 41,711,028 km (0.089 R)
• M31: 42,443,309 km (0.072 R)
• M32: 47,333,963 km (0.084 R)
• M33: 50,739,708 km (0.103 R)
• M34: 54,131,840 km (0.115 R)
• M35: 56,951,909 km (0.06 R)
• M36: 60,426,170 km (0.08 R)
• M37: 61,363,401 km (0.079 R)
• M38: 61,552,044 km (0.061 R)
• M39: 65,405,685 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 174.8

Radius: 6.9

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 6.92 AU - 8.72 AU

Year: 14346 Days

Day: 22.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,672,011 km

• M1: 88,712 km (0.088 R)
• M2: 1,026,840 km (0.11 R)
• M3: 1,549,535 km (0.117 R)
• M4: 3,328,104 km (0.12 R)
• M5: 5,356,352 km (0.114 R)
• M6: 7,008,361 km (0.082 R)
• M7: 8,337,389 km (0.106 R)
• M8: 9,597,003 km (0.113 R)
• M9: 12,433,977 km (0.057 R)
• M10: 15,912,875 km (0.077 R)
• M11: 20,897,327 km (0.106 R)
• M12: 22,308,782 km (0.103 R)
• M13: 35,520,668 km (0.1 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 179 - 20,166 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit