G7V Star System Generated (Seed: 1766170732)

Star Details

Spectral Class: G7V

Temperature: 5,440 K

Mass: 0.96 sol

Luminosity: 0.87 lux

Habitable Zone (HZ)

Inner Boundary: 0.89 AU

Outer Boundary: 1.28 AU

Physical Limits

Snow Line: 4.48 AU

Max System Radius: 19.6 AU

Planetary System (10 Planets)

Planet 1 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.72 AU - 0.96 AU

Year: 287 Days

Day: 33.3 Hours

Environment

Temp: 84 °C

Axial Tilt: 28.5 °

Atmosphere: Dense COâ‚‚

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.8 AU - 1.02 AU

Year: 324 Days

Day: 23.2 Hours

Environment

Temp: 28 °C

Axial Tilt: 45.7 °

Atmosphere: Nâ‚‚, Oâ‚‚

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 81,634,157 km

  • M1: 126,410 km (0.098 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1.22 AU - 1.42 AU

Year: 565 Days

Day: 16.3 Hours

Environment

Temp: -34 °C

Axial Tilt: 34.6 °

Atmosphere: Thin Nâ‚‚/CHâ‚„

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.6

Radius: 0.82

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 2.34 AU - 2.68 AU

Year: 1482 Days

Day: 27.1 Hours

Environment

Temp: -87 °C

Axial Tilt: 25.6 °

Atmosphere: Thin Nâ‚‚/CHâ‚„

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 2.45 AU - 2.59 AU

Year: 1491 Days

Day: 42.2 Hours

Environment

Temp: -98 °C

Axial Tilt: 38.7 °

Atmosphere: Thin Nâ‚‚/CHâ‚„

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.5

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.55 AU - 3.57 AU

Year: 1995 Days

Day: 41.3 Hours

Environment

Temp: -118 °C

Axial Tilt: 31.8 °

Atmosphere: Thin Nâ‚‚/CHâ‚„

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,634,157 km

  • M1: 517,010 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 705.8

Radius: 10.3

Gravity: 6.65 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 7.11 AU - 7.45 AU

Year: 7322 Days

Day: 11.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 11.3 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (82)

Outer Limit: 81,634,157 km

  • M1: 161,566 km (0.078 R)
  • M2: 230,830 km (0.094 R)
  • M3: 321,635 km (0.108 R)
  • M4: 777,759 km (0.071 R)
  • M5: 854,204 km (0.1 R)
  • M6: 1,015,171 km (0.098 R)
  • M7: 1,294,171 km (0.057 R)
  • M8: 2,520,425 km (0.111 R)
  • M9: 2,803,464 km (0.059 R)
  • M10: 3,047,309 km (0.1 R)
  • M11: 3,451,971 km (0.083 R)
  • M12: 3,713,618 km (0.104 R)
  • M13: 3,927,692 km (0.115 R)
  • M14: 4,036,300 km (0.06 R)
  • M15: 4,118,280 km (0.105 R)
  • M16: 4,565,577 km (0.099 R)
  • M17: 5,057,904 km (0.103 R)
  • M18: 5,146,466 km (0.104 R)
  • M19: 5,536,617 km (0.108 R)
  • M20: 5,750,692 km (0.098 R)
  • M21: 6,313,778 km (0.119 R)
  • M22: 6,441,385 km (0.112 R)
  • M23: 6,569,740 km (0.078 R)
  • M24: 6,763,918 km (0.058 R)
  • M25: 6,861,755 km (0.102 R)
  • M26: 6,992,952 km (0.048 R)
  • M27: 7,158,109 km (0.111 R)
  • M28: 7,324,611 km (0.08 R)
  • M29: 7,424,991 km (0.082 R)
  • M30: 8,737,413 km (0.063 R)
  • M31: 8,844,077 km (0.115 R)
  • M32: 9,094,653 km (0.084 R)
  • M33: 9,238,865 km (0.107 R)
  • M34: 10,082,896 km (0.082 R)
  • M35: 10,570,885 km (0.102 R)
  • M36: 10,875,017 km (0.096 R)
  • M37: 13,287,432 km (0.09 R)
  • M38: 13,905,272 km (0.092 R)
  • M39: 14,280,314 km (0.079 R)
  • M40: 14,701,132 km (0.057 R)
  • M41: 14,955,598 km (0.093 R)
  • M42: 15,684,439 km (0.107 R)
  • M43: 16,031,357 km (0.109 R)
  • M44: 16,468,631 km (0.107 R)
  • M45: 16,688,690 km (0.078 R)
  • M46: 17,087,368 km (0.114 R)
  • M47: 17,176,528 km (0.039 R)
  • M48: 17,354,999 km (0.088 R)
  • M49: 19,591,337 km (0.074 R)
  • M50: 20,435,518 km (0.078 R)
  • M51: 20,957,166 km (0.072 R)
  • M52: 21,100,181 km (0.117 R)
  • M53: 21,483,301 km (0.111 R)
  • M54: 21,675,684 km (0.104 R)
  • M55: 21,820,345 km (0.112 R)
  • M56: 22,353,512 km (0.119 R)
  • M57: 22,499,669 km (0.075 R)
  • M58: 23,630,928 km (0.111 R)
  • M59: 23,829,445 km (0.061 R)
  • M60: 24,278,388 km (0.094 R)
  • M61: 24,679,759 km (0.082 R)
  • M62: 25,438,370 km (0.038 R)
  • M63: 28,284,469 km (0.083 R)
  • M64: 28,389,786 km (0.077 R)
  • M65: 29,024,979 km (0.03 R)
  • M66: 29,131,193 km (0.12 R)
  • M67: 29,344,221 km (0.086 R)
  • M68: 29,504,290 km (0.057 R)
  • M69: 29,611,253 km (0.039 R)
  • M70: 29,718,215 km (0.114 R)
  • M71: 29,825,327 km (0.116 R)
  • M72: 30,416,987 km (0.113 R)
  • M73: 30,849,624 km (0.055 R)
  • M74: 32,988,126 km (0.117 R)
  • M75: 34,215,427 km (0.094 R)
  • M76: 34,609,019 km (0.099 R)
  • M77: 35,970,060 km (0.088 R)
  • M78: 37,348,455 km (0.088 R)
  • M79: 37,753,715 km (0.117 R)
  • M80: 38,160,472 km (0.042 R)
  • M81: 38,802,696 km (0.099 R)
  • M82: 39,095,758 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.1

Radius: 13.6

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 8.19 AU - 9.63 AU

Year: 9915 Days

Day: 8.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 31.9 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (86)

Outer Limit: 81,634,157 km

  • M1: 371,152 km (0.082 R)
  • M2: 471,383 km (0.11 R)
  • M3: 1,139,487 km (0.08 R)
  • M4: 1,321,697 km (0.062 R)
  • M5: 1,602,792 km (0.115 R)
  • M6: 1,879,847 km (0.101 R)
  • M7: 2,172,759 km (0.101 R)
  • M8: 3,167,585 km (0.104 R)
  • M9: 3,370,440 km (0.116 R)
  • M10: 3,637,472 km (0.111 R)
  • M11: 3,942,502 km (0.104 R)
  • M12: 4,161,065 km (0.08 R)
  • M13: 4,351,652 km (0.08 R)
  • M14: 4,840,837 km (0.06 R)
  • M15: 5,210,943 km (0.081 R)
  • M16: 5,485,904 km (0.051 R)
  • M17: 5,765,652 km (0.031 R)
  • M18: 6,266,655 km (0.111 R)
  • M19: 6,559,268 km (0.117 R)
  • M20: 6,670,270 km (0.063 R)
  • M21: 7,006,865 km (0.055 R)
  • M22: 7,425,739 km (0.099 R)
  • M23: 7,541,378 km (0.07 R)
  • M24: 8,248,228 km (0.108 R)
  • M25: 8,690,739 km (0.106 R)
  • M26: 8,812,661 km (0.097 R)
  • M27: 9,936,590 km (0.109 R)
  • M28: 10,278,271 km (0.118 R)
  • M29: 10,798,124 km (0.049 R)
  • M30: 11,105,398 km (0.036 R)
  • M31: 12,089,752 km (0.108 R)
  • M32: 12,592,401 km (0.119 R)
  • M33: 13,195,280 km (0.109 R)
  • M34: 13,523,947 km (0.094 R)
  • M35: 14,141,337 km (0.057 R)
  • M36: 14,768,003 km (0.109 R)
  • M37: 15,354,576 km (0.032 R)
  • M38: 16,449,632 km (0.075 R)
  • M39: 16,955,722 km (0.096 R)
  • M40: 17,518,359 km (0.075 R)
  • M41: 18,243,311 km (0.102 R)
  • M42: 18,557,017 km (0.112 R)
  • M43: 18,714,544 km (0.087 R)
  • M44: 18,978,135 km (0.109 R)
  • M45: 19,242,924 km (0.074 R)
  • M46: 19,937,058 km (0.106 R)
  • M47: 20,476,657 km (0.067 R)
  • M48: 20,693,873 km (0.116 R)
  • M49: 20,966,441 km (0.072 R)
  • M50: 21,735,972 km (0.074 R)
  • M51: 22,514,779 km (0.092 R)
  • M52: 22,682,927 km (0.045 R)
  • M53: 23,757,189 km (0.116 R)
  • M54: 23,871,183 km (0.093 R)
  • M55: 25,662,168 km (0.117 R)
  • M56: 27,376,410 km (0.115 R)
  • M57: 27,555,928 km (0.091 R)
  • M58: 27,795,733 km (0.084 R)
  • M59: 28,762,285 km (0.1 R)
  • M60: 29,616,938 km (0.053 R)
  • M61: 30,294,317 km (0.053 R)
  • M62: 30,790,234 km (0.114 R)
  • M63: 31,351,375 km (0.118 R)
  • M64: 32,610,241 km (0.085 R)
  • M65: 32,737,100 km (0.095 R)
  • M66: 33,182,154 km (0.106 R)
  • M67: 34,014,217 km (0.087 R)
  • M68: 34,207,049 km (0.115 R)
  • M69: 34,400,479 km (0.097 R)
  • M70: 34,723,461 km (0.108 R)
  • M71: 34,853,013 km (0.051 R)
  • M72: 35,177,491 km (0.096 R)
  • M73: 35,372,566 km (0.109 R)
  • M74: 36,222,432 km (0.104 R)
  • M75: 37,675,925 km (0.099 R)
  • M76: 38,275,962 km (0.07 R)
  • M77: 38,879,290 km (0.096 R)
  • M78: 39,553,228 km (0.118 R)
  • M79: 40,435,257 km (0.119 R)
  • M80: 41,392,235 km (0.085 R)
  • M81: 42,703,161 km (0.032 R)
  • M82: 43,050,378 km (0.08 R)
  • M83: 45,861,621 km (0.091 R)
  • M84: 46,359,782 km (0.117 R)
  • M85: 46,859,588 km (0.075 R)
  • M86: 47,217,726 km (0.056 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 847.9

Radius: 8.8

Gravity: 10.95 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 7.95 AU - 11.65 AU

Year: 11437 Days

Day: 13 Hours

Environment

Temp: -180 °C

Axial Tilt: 34.5 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (93)

Outer Limit: 81,634,157 km

  • M1: 142,268 km (0.082 R)
  • M2: 223,200 km (0.042 R)
  • M3: 477,217 km (0.104 R)
  • M4: 542,143 km (0.105 R)
  • M5: 834,008 km (0.048 R)
  • M6: 1,061,846 km (0.104 R)
  • M7: 1,172,099 km (0.116 R)
  • M8: 1,626,129 km (0.111 R)
  • M9: 1,939,387 km (0.068 R)
  • M10: 2,271,644 km (0.077 R)
  • M11: 3,115,226 km (0.096 R)
  • M12: 3,471,269 km (0.031 R)
  • M13: 3,670,982 km (0.12 R)
  • M14: 3,977,508 km (0.045 R)
  • M15: 4,081,628 km (0.083 R)
  • M16: 4,151,491 km (0.1 R)
  • M17: 4,328,016 km (0.101 R)
  • M18: 4,725,049 km (0.119 R)
  • M19: 5,133,750 km (0.043 R)
  • M20: 5,399,885 km (0.106 R)
  • M21: 5,476,778 km (0.095 R)
  • M22: 5,985,261 km (0.055 R)
  • M23: 6,755,391 km (0.057 R)
  • M24: 7,089,144 km (0.107 R)
  • M25: 7,300,376 km (0.071 R)
  • M26: 7,556,637 km (0.105 R)
  • M27: 8,432,234 km (0.097 R)
  • M28: 8,791,568 km (0.093 R)
  • M29: 8,973,030 km (0.073 R)
  • M30: 9,064,285 km (0.1 R)
  • M31: 9,618,096 km (0.027 R)
  • M32: 9,852,067 km (0.036 R)
  • M33: 12,041,432 km (0.025 R)
  • M34: 12,395,081 km (0.108 R)
  • M35: 13,633,303 km (0.111 R)
  • M36: 13,949,104 km (0.103 R)
  • M37: 14,214,042 km (0.057 R)
  • M38: 14,480,625 km (0.085 R)
  • M39: 15,018,878 km (0.066 R)
  • M40: 15,290,398 km (0.101 R)
  • M41: 16,337,135 km (0.104 R)
  • M42: 17,293,215 km (0.092 R)
  • M43: 17,520,903 km (0.064 R)
  • M44: 17,921,526 km (0.025 R)
  • M45: 18,848,733 km (0.115 R)
  • M46: 18,907,226 km (0.035 R)
  • M47: 19,259,230 km (0.087 R)
  • M48: 19,910,429 km (0.083 R)
  • M49: 20,689,236 km (0.085 R)
  • M50: 20,870,399 km (0.038 R)
  • M51: 21,661,323 km (0.106 R)
  • M52: 21,783,993 km (0.089 R)
  • M53: 23,084,896 km (0.094 R)
  • M54: 23,147,428 km (0.117 R)
  • M55: 23,272,642 km (0.11 R)
  • M56: 23,776,188 km (0.075 R)
  • M57: 23,966,028 km (0.075 R)
  • M58: 24,092,737 km (0.078 R)
  • M59: 24,602,118 km (0.064 R)
  • M60: 24,794,052 km (0.052 R)
  • M61: 25,050,762 km (0.106 R)
  • M62: 26,151,503 km (0.046 R)
  • M63: 27,400,346 km (0.087 R)
  • M64: 28,065,458 km (0.116 R)
  • M65: 28,265,919 km (0.097 R)
  • M66: 28,601,318 km (0.117 R)
  • M67: 28,803,125 km (0.038 R)
  • M68: 29,005,382 km (0.087 R)
  • M69: 29,140,618 km (0.084 R)
  • M70: 30,229,242 km (0.076 R)
  • M71: 33,290,762 km (0.078 R)
  • M72: 33,573,951 km (0.12 R)
  • M73: 33,929,096 km (0.084 R)
  • M74: 34,786,442 km (0.106 R)
  • M75: 37,034,299 km (0.096 R)
  • M76: 37,254,208 km (0.118 R)
  • M77: 37,474,715 km (0.088 R)
  • M78: 37,695,522 km (0.108 R)
  • M79: 41,060,277 km (0.074 R)
  • M80: 43,820,507 km (0.104 R)
  • M81: 45,301,227 km (0.116 R)
  • M82: 45,458,006 km (0.064 R)
  • M83: 45,772,311 km (0.036 R)
  • M84: 46,402,866 km (0.104 R)
  • M85: 47,991,745 km (0.096 R)
  • M86: 48,792,842 km (0.027 R)
  • M87: 50,246,035 km (0.117 R)
  • M88: 50,570,962 km (0.109 R)
  • M89: 51,222,760 km (0.087 R)
  • M90: 52,617,012 km (0.065 R)
  • M91: 52,699,440 km (0.085 R)
  • M92: 53,029,453 km (0.077 R)
  • M93: 55,191,591 km (0.083 R)

Planet 10 - Ice Giant

Semi-Major Axis: 14.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 832.7

Radius: 3.2

Gravity: 81.32 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 13.27 AU - 15.33 AU

Year: 20159 Days

Day: 19.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 6.3 °

Atmosphere: Hâ‚‚, CHâ‚„

Biome: None

Satellites (96)

Outer Limit: 81,634,157 km

  • M1: 147,055 km (0.111 R)
  • M2: 175,030 km (0.091 R)
  • M3: 324,478 km (0.09 R)
  • M4: 1,299,407 km (0.104 R)
  • M5: 1,715,738 km (0.065 R)
  • M6: 2,061,758 km (0.119 R)
  • M7: 2,466,719 km (0.106 R)
  • M8: 2,815,881 km (0.091 R)
  • M9: 2,935,709 km (0.09 R)
  • M10: 3,139,162 km (0.07 R)
  • M11: 3,221,889 km (0.091 R)
  • M12: 3,689,083 km (0.114 R)
  • M13: 3,820,281 km (0.112 R)
  • M14: 3,908,544 km (0.095 R)
  • M15: 3,952,825 km (0.103 R)
  • M16: 4,222,699 km (0.119 R)
  • M17: 5,508,493 km (0.063 R)
  • M18: 5,860,197 km (0.116 R)
  • M19: 6,013,086 km (0.115 R)
  • M20: 6,690,914 km (0.071 R)
  • M21: 8,004,384 km (0.076 R)
  • M22: 9,098,692 km (0.119 R)
  • M23: 9,693,344 km (0.045 R)
  • M24: 9,874,058 km (0.087 R)
  • M25: 10,056,118 km (0.065 R)
  • M26: 10,177,891 km (0.072 R)
  • M27: 10,361,747 km (0.063 R)
  • M28: 11,233,753 km (0.119 R)
  • M29: 11,742,535 km (0.059 R)
  • M30: 11,806,563 km (0.046 R)
  • M31: 13,648,711 km (0.1 R)
  • M32: 15,437,453 km (0.093 R)
  • M33: 15,578,075 km (0.103 R)
  • M34: 19,455,652 km (0.075 R)
  • M35: 19,683,639 km (0.045 R)
  • M36: 19,836,079 km (0.076 R)
  • M37: 20,914,381 km (0.115 R)
  • M38: 21,304,083 km (0.116 R)
  • M39: 22,090,669 km (0.096 R)
  • M40: 22,726,609 km (0.074 R)
  • M41: 24,342,865 km (0.103 R)
  • M42: 24,835,042 km (0.077 R)
  • M43: 25,496,264 km (0.093 R)
  • M44: 27,684,732 km (0.045 R)
  • M45: 28,628,545 km (0.084 R)
  • M46: 28,974,415 km (0.101 R)
  • M47: 29,321,631 km (0.088 R)
  • M48: 29,757,560 km (0.119 R)
  • M49: 30,283,546 km (0.064 R)
  • M50: 30,547,586 km (0.113 R)
  • M51: 30,724,111 km (0.071 R)
  • M52: 30,812,524 km (0.067 R)
  • M53: 31,166,921 km (0.093 R)
  • M54: 31,879,755 km (0.093 R)
  • M55: 32,238,192 km (0.083 R)
  • M56: 32,417,859 km (0.095 R)
  • M57: 33,503,042 km (0.101 R)
  • M58: 34,876,350 km (0.072 R)
  • M59: 35,060,804 km (0.084 R)
  • M60: 35,338,159 km (0.114 R)
  • M61: 35,801,912 km (0.054 R)
  • M62: 37,205,589 km (0.073 R)
  • M63: 37,771,966 km (0.113 R)
  • M64: 40,162,690 km (0.093 R)
  • M65: 42,799,053 km (0.063 R)
  • M66: 43,293,325 km (0.089 R)
  • M67: 43,491,691 km (0.075 R)
  • M68: 44,387,483 km (0.061 R)
  • M69: 45,088,499 km (0.041 R)
  • M70: 45,189,029 km (0.105 R)
  • M71: 45,591,447 km (0.118 R)
  • M72: 46,704,605 km (0.071 R)
  • M73: 48,854,177 km (0.092 R)
  • M74: 50,096,886 km (0.11 R)
  • M75: 51,350,068 km (0.119 R)
  • M76: 54,420,713 km (0.107 R)
  • M77: 54,634,788 km (0.077 R)
  • M78: 54,741,750 km (0.079 R)
  • M79: 55,601,041 km (0.085 R)
  • M80: 56,032,182 km (0.076 R)
  • M81: 56,248,351 km (0.113 R)
  • M82: 56,572,828 km (0.101 R)
  • M83: 57,115,270 km (0.113 R)
  • M84: 63,531,373 km (0.05 R)
  • M85: 66,709,281 km (0.094 R)
  • M86: 70,520,586 km (0.038 R)
  • M87: 71,104,317 km (0.033 R)
  • M88: 72,511,434 km (0.112 R)
  • M89: 72,746,901 km (0.108 R)
  • M90: 72,982,518 km (0.091 R)
  • M91: 74,046,308 km (0.085 R)
  • M92: 74,283,271 km (0.041 R)
  • M93: 74,877,175 km (0.072 R)
  • M94: 78,110,733 km (0.111 R)
  • M95: 79,441,107 km (0.072 R)
  • M96: 79,805,228 km (0.092 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: 173 - 16,940 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit