🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.48 AU - 0.62 AU

Year: 259 Days

Day: 18.6 Hours

Environment

Temp: -114 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 78.1

Radius: 13.7

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.78 AU - 0.92 AU

Year: 498 Days

Day: 5.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 69,078,362 km

• M1: 170,392 km (0.085 R)
• M2: 639,082 km (0.074 R)
• M3: 1,165,367 km (0.044 R)
• M4: 1,805,646 km (0.115 R)
• M5: 2,326,097 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.3

Radius: 11.8

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.97 AU - 1.07 AU

Year: 655 Days

Day: 14.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 69,078,362 km

• M1: 148,999 km (0.108 R)
• M2: 528,978 km (0.084 R)
• M3: 970,741 km (0.103 R)
• M4: 1,397,843 km (0.119 R)
• M5: 2,123,841 km (0.103 R)
• M6: 3,551,603 km (0.06 R)
• M7: 4,151,939 km (0.078 R)
• M8: 4,677,327 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.4

Radius: 14.6

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 3.35 AU - 4.37 AU

Year: 4822 Days

Day: 12.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 69,078,362 km

• M1: 181,612 km (0.099 R)
• M2: 1,005,148 km (0.041 R)
• M3: 1,539,512 km (0.114 R)
• M4: 2,054,428 km (0.055 R)
• M5: 2,599,861 km (0.067 R)
• M6: 3,940,109 km (0.097 R)
• M7: 4,645,163 km (0.047 R)
• M8: 8,899,727 km (0.103 R)
• M9: 10,149,019 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.4

Radius: 10.1

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 3.63 AU - 4.27 AU

Year: 4991 Days

Day: 6.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 69,078,362 km

• M1: 125,662 km (0.098 R)
• M2: 611,406 km (0.107 R)
• M3: 1,244,056 km (0.066 R)
• M4: 1,730,847 km (0.053 R)
• M5: 2,744,971 km (0.085 R)
• M6: 3,142,154 km (0.088 R)
• M7: 3,465,135 km (0.039 R)
• M8: 3,790,511 km (0.034 R)
• M9: 5,107,122 km (0.111 R)
• M10: 5,737,527 km (0.11 R)
• M11: 6,306,448 km (0.109 R)
• M12: 8,041,484 km (0.098 R)
• M13: 8,859,784 km (0.109 R)
• M14: 10,074,220 km (0.093 R)
• M15: 10,423,980 km (0.071 R)
• M16: 12,561,584 km (0.114 R)
• M17: 12,921,516 km (0.114 R)
• M18: 13,427,755 km (0.077 R)
• M19: 13,804,293 km (0.078 R)
• M20: 14,333,421 km (0.036 R)
• M21: 16,212,968 km (0.116 R)
• M22: 18,023,252 km (0.1 R)
• M23: 21,080,285 km (0.068 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 675.6

Radius: 4.1

Gravity: 40.19 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 9.02 AU - 9.16 AU

Year: 17425 Days

Day: 20.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 69,078,362 km

• M1: 51,312 km (0.084 R)
• M2: 213,476 km (0.092 R)
• M3: 361,129 km (0.104 R)
• M4: 539,600 km (0.105 R)
• M5: 880,084 km (0.118 R)
• M6: 1,379,891 km (0.11 R)
• M7: 1,933,702 km (0.067 R)
• M8: 4,146,404 km (0.081 R)
• M9: 4,603,426 km (0.078 R)
• M10: 5,202,565 km (0.025 R)
• M11: 5,501,910 km (0.05 R)
• M12: 6,771,099 km (0.08 R)
• M13: 7,264,772 km (0.047 R)
• M14: 7,450,124 km (0.039 R)
• M15: 8,837,195 km (0.094 R)
• M16: 9,101,834 km (0.113 R)
• M17: 12,110,546 km (0.101 R)
• M18: 14,814,976 km (0.12 R)
• M19: 15,113,125 km (0.117 R)
• M20: 18,663,082 km (0.084 R)
• M21: 21,663,567 km (0.101 R)
• M22: 23,731,608 km (0.063 R)
• M23: 25,712,732 km (0.075 R)
• M24: 35,399,344 km (0.119 R)
• M25: 39,384,482 km (0.109 R)
• M26: 42,900,481 km (0.098 R)
• M27: 43,202,519 km (0.088 R)
• M28: 53,461,492 km (0.112 R)
• M29: 58,870,801 km (0.107 R)
• M30: 64,041,053 km (0.046 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 476.6

Radius: 7.5

Gravity: 8.47 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 9.11 AU - 9.35 AU

Year: 17829 Days

Day: 23.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 69,078,362 km

• M1: 93,499 km (0.098 R)
• M2: 444,904 km (0.115 R)
• M3: 766,390 km (0.093 R)
• M4: 1,044,492 km (0.094 R)
• M5: 2,437,697 km (0.091 R)
• M6: 2,721,335 km (0.1 R)
• M7: 3,792,306 km (0.047 R)
• M8: 5,051,172 km (0.047 R)
• M9: 6,242,570 km (0.086 R)
• M10: 6,526,357 km (0.103 R)
• M11: 7,119,811 km (0.105 R)
• M12: 9,220,315 km (0.114 R)
• M13: 10,869,332 km (0.084 R)
• M14: 11,400,255 km (0.094 R)
• M15: 13,970,796 km (0.098 R)
• M16: 14,317,264 km (0.087 R)
• M17: 14,811,685 km (0.119 R)
• M18: 15,760,136 km (0.107 R)
• M19: 17,858,695 km (0.097 R)
• M20: 18,764,510 km (0.047 R)
• M21: 22,791,385 km (0.038 R)
• M22: 24,053,991 km (0.114 R)
• M23: 26,295,715 km (0.095 R)
• M24: 29,913,889 km (0.065 R)
• M25: 31,425,875 km (0.101 R)
• M26: 32,502,232 km (0.109 R)
• M27: 34,981,368 km (0.119 R)
• M28: 46,775,664 km (0.081 R)
• M29: 48,651,172 km (0.115 R)
• M30: 50,901,872 km (0.092 R)
• M31: 55,264,146 km (0.115 R)
• M32: 56,130,617 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 162.8

Radius: 3.3

Gravity: 14.95 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 10.47 AU - 10.47 AU

Year: 21540 Days

Day: 21.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 69,078,362 km

• M1: 40,990 km (0.091 R)
• M2: 176,825 km (0.102 R)
• M3: 375,042 km (0.039 R)
• M4: 505,790 km (0.105 R)
• M5: 768,634 km (0.096 R)
• M6: 1,004,101 km (0.088 R)
• M7: 1,235,379 km (0.119 R)
• M8: 1,602,343 km (0.107 R)
• M9: 2,671,220 km (0.108 R)
• M10: 3,376,873 km (0.104 R)
• M11: 3,577,483 km (0.074 R)
• M12: 4,002,491 km (0.109 R)
• M13: 4,142,066 km (0.037 R)
• M14: 5,377,445 km (0.059 R)
• M15: 5,513,130 km (0.095 R)
• M16: 5,898,046 km (0.09 R)
• M17: 6,300,614 km (0.105 R)
• M18: 8,637,781 km (0.12 R)
• M19: 10,359,054 km (0.111 R)
• M20: 14,657,899 km (0.074 R)
• M21: 15,123,597 km (0.104 R)
• M22: 16,225,086 km (0.096 R)
• M23: 18,279,513 km (0.091 R)
• M24: 18,432,552 km (0.074 R)
• M25: 19,448,322 km (0.085 R)
• M26: 20,254,505 km (0.116 R)
• M27: 23,612,378 km (0.105 R)
• M28: 28,230,913 km (0.061 R)
• M29: 29,263,438 km (0.106 R)
• M30: 29,472,875 km (0.067 R)
• M31: 33,302,580 km (0.065 R)
• M32: 39,584,494 km (0.12 R)
• M33: 44,367,288 km (0.115 R)
• M34: 45,761,091 km (0.037 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 417.5

Radius: 5.2

Gravity: 15.44 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 8.12 AU - 13.22 AU

Year: 22161 Days

Day: 19.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 69,078,362 km

• M1: 81,980 km (0.114 R)
• M2: 576,401 km (0.114 R)
• M3: 948,899 km (0.069 R)
• M4: 1,130,062 km (0.1 R)
• M5: 1,730,548 km (0.081 R)
• M6: 2,567,399 km (0.098 R)
• M7: 3,049,104 km (0.09 R)
• M8: 3,675,021 km (0.112 R)
• M9: 6,270,096 km (0.107 R)
• M10: 6,608,486 km (0.094 R)
• M11: 9,436,484 km (0.101 R)
• M12: 9,937,487 km (0.114 R)
• M13: 12,249,672 km (0.119 R)
• M14: 13,881,336 km (0.092 R)
• M15: 14,094,962 km (0.098 R)
• M16: 18,756,282 km (0.111 R)
• M17: 19,369,633 km (0.105 R)
• M18: 22,149,910 km (0.112 R)
• M19: 22,637,898 km (0.108 R)
• M20: 25,503,295 km (0.088 R)
• M21: 26,582,494 km (0.039 R)
• M22: 27,244,465 km (0.082 R)
• M23: 27,691,912 km (0.119 R)
• M24: 28,030,602 km (0.068 R)
• M25: 31,083,296 km (0.075 R)
• M26: 37,150,387 km (0.109 R)
• M27: 37,700,459 km (0.075 R)
• M28: 39,099,498 km (0.105 R)
• M29: 41,115,628 km (0.114 R)
• M30: 42,898,087 km (0.101 R)
• M31: 46,140,172 km (0.072 R)
• M32: 46,616,192 km (0.059 R)
• M33: 51,900,139 km (0.104 R)
• M34: 52,243,017 km (0.068 R)
• M35: 54,863,074 km (0.118 R)
• M36: 57,021,173 km (0.116 R)
• M37: 57,753,006 km (0.081 R)
• M38: 65,818,426 km (0.086 R)
• M39: 67,231,677 km (0.117 R)
• M40: 68,665,123 km (0.072 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: 352 - 12,912 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit