🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.53 AU - 0.77 AU

Year: 227 Days

Day: 35.6 Hours

Environment

Temp: 12 °C

Axial Tilt: 5.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 86,624,837 km

• M1: 82,728 km (0.066 R)
• M2: 528,230 km (0.074 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.93 AU - 1.55 AU

Year: 599 Days

Day: 44.7 Hours

Environment

Temp: -70 °C

Axial Tilt: 6.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 1.25 AU - 1.27 AU

Year: 613 Days

Day: 19.8 Hours

Environment

Temp: -88 °C

Axial Tilt: 7.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.55

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.6 AU - 2.26 AU

Year: 1162 Days

Day: 41 Hours

Environment

Temp: -121 °C

Axial Tilt: 16.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.3

Radius: 9

Gravity: 8.62 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 2.81 AU - 3.39 AU

Year: 2366 Days

Day: 14.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 86,624,837 km

• M1: 139,126 km (0.053 R)
• M2: 202,556 km (0.104 R)
• M3: 451,636 km (0.096 R)
• M4: 590,762 km (0.115 R)
• M5: 666,010 km (0.06 R)
• M6: 727,046 km (0.101 R)
• M7: 1,021,753 km (0.03 R)
• M8: 1,156,242 km (0.081 R)
• M9: 1,319,004 km (0.061 R)
• M10: 1,571,376 km (0.073 R)
• M11: 1,667,119 km (0.063 R)
• M12: 1,927,718 km (0.106 R)
• M13: 2,030,492 km (0.112 R)
• M14: 2,241,574 km (0.079 R)
• M15: 2,515,638 km (0.049 R)
• M16: 2,742,578 km (0.12 R)
• M17: 2,800,472 km (0.044 R)
• M18: 2,873,326 km (0.103 R)
• M19: 2,976,399 km (0.104 R)
• M20: 3,080,669 km (0.047 R)
• M21: 3,573,145 km (0.111 R)
• M22: 3,844,964 km (0.089 R)
• M23: 3,975,115 km (0.12 R)
• M24: 4,307,072 km (0.084 R)
• M25: 4,442,458 km (0.063 R)
• M26: 4,561,987 km (0.068 R)
• M27: 4,630,802 km (0.101 R)
• M28: 4,804,336 km (0.085 R)
• M29: 4,962,461 km (0.078 R)
• M30: 5,086,627 km (0.042 R)
• M31: 5,410,656 km (0.118 R)
• M32: 5,611,865 km (0.059 R)
• M33: 6,441,684 km (0.105 R)
• M34: 6,538,474 km (0.117 R)
• M35: 6,635,713 km (0.048 R)
• M36: 6,733,400 km (0.118 R)
• M37: 7,329,697 km (0.103 R)
• M38: 7,819,032 km (0.034 R)
• M39: 8,276,801 km (0.105 R)
• M40: 8,360,875 km (0.109 R)
• M41: 9,152,996 km (0.104 R)
• M42: 9,218,370 km (0.118 R)
• M43: 9,458,924 km (0.06 R)
• M44: 9,768,292 km (0.1 R)
• M45: 10,103,541 km (0.108 R)
• M46: 10,216,039 km (0.105 R)
• M47: 10,374,313 km (0.097 R)
• M48: 10,465,119 km (0.12 R)
• M49: 11,108,240 km (0.054 R)
• M50: 11,364,501 km (0.041 R)
• M51: 11,504,974 km (0.09 R)
• M52: 11,599,071 km (0.102 R)
• M53: 11,906,345 km (0.107 R)
• M54: 12,240,397 km (0.091 R)
• M55: 12,312,354 km (0.072 R)
• M56: 12,991,079 km (0.093 R)
• M57: 13,113,450 km (0.1 R)
• M58: 13,260,954 km (0.106 R)
• M59: 13,359,539 km (0.053 R)
• M60: 13,433,739 km (0.104 R)
• M61: 13,856,353 km (0.091 R)
• M62: 13,931,302 km (0.103 R)
• M63: 14,409,716 km (0.079 R)
• M64: 14,485,711 km (0.096 R)
• M65: 14,842,353 km (0.085 R)
• M66: 15,486,222 km (0.063 R)
• M67: 15,616,223 km (0.107 R)
• M68: 15,981,840 km (0.101 R)
• M69: 16,165,696 km (0.109 R)
• M70: 16,244,683 km (0.106 R)
• M71: 16,456,065 km (0.033 R)
• M72: 16,561,980 km (0.067 R)
• M73: 16,694,823 km (0.112 R)
• M74: 16,988,334 km (0.086 R)

Asteroid Belt

Center: 3.42 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 951

Radius: 10.3

Gravity: 8.96 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 2.86 AU - 4.6 AU

Year: 3123 Days

Day: 14.1 Hours

Environment

Temp: -151 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (73)

Outer Limit: 86,624,837 km

• M1: 145,559 km (0.117 R)
• M2: 268,229 km (0.104 R)
• M3: 418,425 km (0.08 R)
• M4: 543,190 km (0.067 R)
• M5: 610,958 km (0.044 R)
• M6: 789,129 km (0.105 R)
• M7: 1,302,249 km (0.103 R)
• M8: 1,709,754 km (0.118 R)
• M9: 1,829,133 km (0.114 R)
• M10: 2,092,126 km (0.082 R)
• M11: 2,450,712 km (0.104 R)
• M12: 2,568,895 km (0.114 R)
• M13: 2,637,410 km (0.082 R)
• M14: 2,864,051 km (0.086 R)
• M15: 3,042,821 km (0.062 R)
• M16: 3,486,977 km (0.085 R)
• M17: 3,582,121 km (0.079 R)
• M18: 3,697,461 km (0.098 R)
• M19: 4,111,099 km (0.117 R)
• M20: 4,456,670 km (0.098 R)
• M21: 4,601,780 km (0.112 R)
• M22: 4,854,152 km (0.096 R)
• M23: 5,046,535 km (0.048 R)
• M24: 5,111,161 km (0.037 R)
• M25: 5,241,311 km (0.103 R)
• M26: 5,728,102 km (0.091 R)
• M27: 5,840,750 km (0.094 R)
• M28: 6,068,288 km (0.048 R)
• M29: 6,137,253 km (0.049 R)
• M30: 6,415,205 km (0.115 R)
• M31: 6,863,850 km (0.056 R)
• M32: 7,152,573 km (0.103 R)
• M33: 7,322,816 km (0.032 R)
• M34: 7,469,870 km (0.062 R)
• M35: 7,816,638 km (0.109 R)
• M36: 7,891,587 km (0.097 R)
• M37: 8,270,369 km (0.097 R)
• M38: 8,551,762 km (0.086 R)
• M39: 8,706,596 km (0.094 R)
• M40: 9,335,506 km (0.088 R)
• M41: 9,735,979 km (0.1 R)
• M42: 9,978,926 km (0.077 R)
• M43: 10,526,155 km (0.032 R)
• M44: 10,747,859 km (0.107 R)
• M45: 10,887,135 km (0.069 R)
• M46: 11,083,108 km (0.089 R)
• M47: 11,167,481 km (0.05 R)
• M48: 11,592,638 km (0.089 R)
• M49: 12,487,981 km (0.074 R)
• M50: 13,345,626 km (0.107 R)
• M51: 13,585,581 km (0.095 R)
• M52: 13,736,226 km (0.102 R)
• M53: 14,130,716 km (0.064 R)
• M54: 14,775,782 km (0.104 R)
• M55: 16,222,094 km (0.034 R)
• M56: 16,414,028 km (0.091 R)
• M57: 17,417,830 km (0.115 R)
• M58: 18,374,957 km (0.089 R)
• M59: 18,508,249 km (0.104 R)
• M60: 19,382,947 km (0.115 R)
• M61: 19,518,633 km (0.107 R)
• M62: 19,620,658 km (0.118 R)
• M63: 20,133,480 km (0.115 R)
• M64: 20,650,640 km (0.088 R)
• M65: 20,858,880 km (0.09 R)
• M66: 21,102,575 km (0.06 R)
• M67: 21,242,150 km (0.092 R)
• M68: 21,698,274 km (0.091 R)
• M69: 21,874,500 km (0.049 R)
• M70: 22,192,994 km (0.106 R)
• M71: 22,370,566 km (0.111 R)
• M72: 22,942,180 km (0.09 R)
• M73: 24,172,622 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371.8

Radius: 8.3

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 3.05 AU - 5.07 AU

Year: 3546 Days

Day: 13.8 Hours

Environment

Temp: -166 °C

Axial Tilt: 179.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 86,624,837 km

• M1: 150,346 km (0.077 R)
• M2: 448,794 km (0.106 R)
• M3: 511,475 km (0.05 R)
• M4: 794,813 km (0.07 R)
• M5: 1,016,518 km (0.082 R)
• M6: 1,212,640 km (0.118 R)
• M7: 1,326,933 km (0.117 R)
• M8: 1,385,575 km (0.087 R)
• M9: 1,793,978 km (0.109 R)
• M10: 1,911,861 km (0.093 R)
• M11: 1,978,432 km (0.047 R)
• M12: 2,072,978 km (0.073 R)
• M13: 2,451,760 km (0.095 R)
• M14: 2,716,398 km (0.103 R)
• M15: 2,836,974 km (0.106 R)
• M16: 2,974,754 km (0.098 R)
• M17: 3,162,050 km (0.116 R)
• M18: 3,564,618 km (0.096 R)
• M19: 3,713,468 km (0.117 R)
• M20: 3,813,848 km (0.109 R)
• M21: 4,294,506 km (0.114 R)
• M22: 4,364,817 km (0.049 R)
• M23: 4,435,427 km (0.104 R)
• M24: 4,867,316 km (0.117 R)
• M25: 4,940,619 km (0.102 R)
• M26: 5,616,652 km (0.035 R)
• M27: 5,751,589 km (0.086 R)
• M28: 6,142,788 km (0.113 R)
• M29: 6,603,400 km (0.069 R)
• M30: 6,827,647 km (0.105 R)
• M31: 6,971,710 km (0.092 R)
• M32: 7,304,714 km (0.102 R)
• M33: 7,430,975 km (0.065 R)
• M34: 7,579,077 km (0.05 R)
• M35: 8,072,899 km (0.091 R)
• M36: 8,137,975 km (0.1 R)
• M37: 8,688,046 km (0.052 R)
• M38: 8,821,786 km (0.075 R)
• M39: 9,181,869 km (0.078 R)
• M40: 9,363,780 km (0.112 R)
• M41: 9,846,831 km (0.1 R)
• M42: 10,503,566 km (0.052 R)
• M43: 10,909,275 km (0.047 R)
• M44: 10,981,381 km (0.096 R)
• M45: 11,101,957 km (0.04 R)
• M46: 11,320,071 km (0.116 R)
• M47: 11,686,735 km (0.107 R)
• M48: 11,785,171 km (0.095 R)
• M49: 11,982,939 km (0.099 R)
• M50: 12,082,122 km (0.075 R)
• M51: 12,256,554 km (0.095 R)
• M52: 12,658,373 km (0.079 R)
• M53: 12,835,497 km (0.049 R)
• M54: 12,911,643 km (0.095 R)
• M55: 13,192,139 km (0.114 R)
• M56: 13,577,952 km (0.025 R)
• M57: 13,655,593 km (0.098 R)
• M58: 13,915,444 km (0.111 R)
• M59: 14,492,743 km (0.076 R)
• M60: 14,598,508 km (0.11 R)
• M61: 14,651,466 km (0.039 R)
• M62: 15,211,859 km (0.101 R)
• M63: 15,616,372 km (0.071 R)
• M64: 15,670,676 km (0.095 R)
• M65: 15,942,645 km (0.085 R)
• M66: 16,326,064 km (0.107 R)
• M67: 16,684,800 km (0.038 R)
• M68: 17,241,903 km (0.117 R)
• M69: 17,353,951 km (0.09 R)
• M70: 17,550,822 km (0.047 R)
• M71: 17,635,345 km (0.103 R)
• M72: 18,003,505 km (0.108 R)
• M73: 18,117,200 km (0.089 R)
• M74: 18,259,766 km (0.077 R)
• M75: 18,402,782 km (0.093 R)
• M76: 19,413,615 km (0.086 R)
• M77: 19,501,130 km (0.031 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 667.2

Radius: 10.4

Gravity: 6.17 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 4.03 AU - 4.81 AU

Year: 4028 Days

Day: 13 Hours

Environment

Temp: -166 °C

Axial Tilt: 92.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 86,624,837 km

• M1: 133,591 km (0.054 R)
• M2: 213,476 km (0.052 R)
• M3: 351,256 km (0.105 R)
• M4: 508,334 km (0.103 R)
• M5: 1,268,889 km (0.098 R)
• M6: 1,380,040 km (0.114 R)
• M7: 1,764,208 km (0.112 R)
• M8: 2,505,166 km (0.113 R)
• M9: 2,717,894 km (0.114 R)
• M10: 2,863,004 km (0.08 R)
• M11: 3,066,906 km (0.083 R)
• M12: 3,142,154 km (0.029 R)
• M13: 3,627,000 km (0.058 R)
• M14: 3,807,415 km (0.113 R)
• M15: 3,908,992 km (0.064 R)
• M16: 4,031,962 km (0.105 R)
• M17: 4,177,072 km (0.093 R)
• M18: 4,324,126 km (0.109 R)
• M19: 4,906,810 km (0.111 R)
• M20: 5,017,513 km (0.118 R)
• M21: 5,218,871 km (0.109 R)
• M22: 5,422,923 km (0.047 R)
• M23: 5,909,265 km (0.102 R)
• M24: 6,003,512 km (0.072 R)
• M25: 6,193,501 km (0.095 R)
• M26: 6,579,464 km (0.113 R)
• M27: 6,799,971 km (0.08 R)
• M28: 6,923,539 km (0.113 R)
• M29: 7,122,953 km (0.11 R)
• M30: 7,732,265 km (0.034 R)
• M31: 9,109,613 km (0.094 R)
• M32: 9,218,670 km (0.093 R)
• M33: 9,493,182 km (0.092 R)
• M34: 10,050,434 km (0.054 R)
• M35: 10,134,957 km (0.116 R)
• M36: 10,276,327 km (0.055 R)
• M37: 10,675,753 km (0.069 R)
• M38: 10,848,538 km (0.1 R)
• M39: 11,022,222 km (0.118 R)
• M40: 11,934,170 km (0.079 R)
• M41: 12,083,469 km (0.114 R)
• M42: 12,203,446 km (0.086 R)
• M43: 12,626,359 km (0.119 R)
• M44: 13,146,362 km (0.086 R)
• M45: 13,269,780 km (0.102 R)
• M46: 13,424,614 km (0.085 R)
• M47: 13,548,780 km (0.103 R)
• M48: 13,767,193 km (0.093 R)
• M49: 14,081,199 km (0.11 R)
• M50: 14,972,952 km (0.077 R)
• M51: 15,166,382 km (0.12 R)
• M52: 15,490,710 km (0.077 R)
• M53: 15,915,717 km (0.112 R)
• M54: 16,278,343 km (0.106 R)
• M55: 16,844,122 km (0.112 R)
• M56: 16,911,142 km (0.038 R)
• M57: 17,721,962 km (0.084 R)
• M58: 17,892,504 km (0.082 R)
• M59: 18,545,498 km (0.082 R)
• M60: 18,684,026 km (0.115 R)
• M61: 18,787,997 km (0.113 R)
• M62: 19,066,548 km (0.079 R)
• M63: 19,136,410 km (0.095 R)
• M64: 20,051,949 km (0.058 R)
• M65: 20,407,992 km (0.077 R)
• M66: 20,658,419 km (0.072 R)
• M67: 20,765,980 km (0.11 R)
• M68: 21,234,670 km (0.117 R)
• M69: 21,343,278 km (0.116 R)
• M70: 21,816,157 km (0.04 R)
• M71: 22,219,024 km (0.069 R)
• M72: 22,883,537 km (0.098 R)
• M73: 23,218,188 km (0.097 R)
• M74: 23,404,886 km (0.085 R)
• M75: 23,517,084 km (0.089 R)
• M76: 23,779,629 km (0.094 R)
• M77: 24,232,013 km (0.058 R)
• M78: 25,298,646 km (0.026 R)
• M79: 25,375,389 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 528.3

Radius: 5.9

Gravity: 15.18 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 14.31 AU - 17.63 AU

Year: 27664 Days

Day: 17.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 86,624,837 km

• M1: 81,082 km (0.094 R)
• M2: 124,017 km (0.116 R)
• M3: 173,234 km (0.095 R)
• M4: 318,195 km (0.115 R)
• M5: 478,863 km (0.047 R)
• M6: 899,532 km (0.092 R)
• M7: 955,332 km (0.12 R)
• M8: 1,540,858 km (0.079 R)
• M9: 2,410,321 km (0.082 R)
• M10: 2,488,561 km (0.118 R)
• M11: 2,528,054 km (0.099 R)
• M12: 3,626,402 km (0.077 R)
• M13: 4,224,195 km (0.106 R)
• M14: 4,951,540 km (0.101 R)
• M15: 5,151,851 km (0.102 R)
• M16: 5,612,613 km (0.119 R)
• M17: 6,573,181 km (0.087 R)
• M18: 7,128,638 km (0.074 R)
• M19: 7,814,843 km (0.099 R)
• M20: 8,283,832 km (0.069 R)
• M21: 9,682,722 km (0.112 R)
• M22: 9,807,786 km (0.038 R)
• M23: 10,059,559 km (0.106 R)
• M24: 10,633,716 km (0.09 R)
• M25: 10,762,669 km (0.062 R)
• M26: 11,284,167 km (0.102 R)
• M27: 13,311,368 km (0.057 R)
• M28: 15,375,071 km (0.082 R)
• M29: 16,257,698 km (0.073 R)
• M30: 16,406,398 km (0.097 R)
• M31: 16,705,295 km (0.081 R)
• M32: 21,153,438 km (0.085 R)
• M33: 21,887,365 km (0.112 R)
• M34: 23,128,878 km (0.074 R)
• M35: 23,379,903 km (0.1 R)
• M36: 24,393,130 km (0.034 R)
• M37: 27,606,342 km (0.043 R)
• M38: 28,229,118 km (0.03 R)
• M39: 28,946,440 km (0.113 R)
• M40: 29,397,777 km (0.115 R)
• M41: 30,216,077 km (0.113 R)
• M42: 30,307,481 km (0.077 R)
• M43: 30,398,886 km (0.107 R)
• M44: 30,673,996 km (0.07 R)
• M45: 30,765,849 km (0.108 R)
• M46: 31,689,317 km (0.115 R)
• M47: 31,875,118 km (0.066 R)
• M48: 32,809,506 km (0.111 R)
• M49: 35,376,904 km (0.105 R)
• M50: 35,666,227 km (0.086 R)
• M51: 38,008,181 km (0.117 R)
• M52: 40,500,183 km (0.082 R)
• M53: 42,020,546 km (0.085 R)
• M54: 42,531,423 km (0.067 R)
• M55: 44,595,574 km (0.113 R)
• M56: 45,849,653 km (0.091 R)
• M57: 47,752,538 km (0.103 R)
• M58: 50,980,710 km (0.1 R)
• M59: 52,731,005 km (0.085 R)
• M60: 53,171,571 km (0.11 R)
• M61: 53,834,888 km (0.119 R)
• M62: 54,946,400 km (0.086 R)
• M63: 55,281,350 km (0.118 R)
• M64: 56,402,736 km (0.094 R)
• M65: 57,079,068 km (0.104 R)
• M66: 57,192,014 km (0.099 R)
• M67: 57,644,847 km (0.068 R)
• M68: 58,667,797 km (0.082 R)
• M69: 59,696,731 km (0.109 R)
• M70: 62,120,665 km (0.11 R)
• M71: 63,754,573 km (0.081 R)
• M72: 65,048,146 km (0.074 R)
• M73: 67,064,277 km (0.118 R)
• M74: 67,661,172 km (0.072 R)
• M75: 68,619,795 km (0.115 R)
• M76: 69,341,755 km (0.094 R)
• M77: 69,583,056 km (0.06 R)
• M78: 69,824,507 km (0.069 R)
• M79: 70,671,979 km (0.093 R)
• M80: 72,499,317 km (0.098 R)
• M81: 72,989,250 km (0.082 R)
• M82: 73,972,258 km (0.093 R)
• M83: 74,218,795 km (0.066 R)
• M84: 75,207,338 km (0.112 R)
• M85: 75,579,238 km (0.111 R)
• M86: 76,449,299 km (0.082 R)
• M87: 76,573,764 km (0.085 R)
• M88: 77,197,588 km (0.093 R)
• M89: 77,948,419 km (0.12 R)
• M90: 78,953,268 km (0.106 R)
• M91: 83,399,467 km (0.12 R)
• M92: 83,784,382 km (0.107 R)
• M93: 85,200,625 km (0.059 R)
• M94: 85,458,980 km (0.074 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 319 - 15,709 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit