🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.61 AU - 0.63 AU

Year: 320 Days

Day: 34.8 Hours

Environment

Temp: -126 °C

Axial Tilt: 13.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481.5

Radius: 10.5

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.82 AU - 1.2 AU

Year: 666 Days

Day: 9.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 66,947,214 km

• M1: 166,353 km (0.108 R)
• M2: 244,443 km (0.107 R)
• M3: 351,106 km (0.12 R)
• M4: 486,642 km (0.09 R)
• M5: 578,645 km (0.071 R)
• M6: 754,422 km (0.11 R)
• M7: 863,928 km (0.087 R)
• M8: 943,514 km (0.107 R)
• M9: 1,020,557 km (0.119 R)
• M10: 1,181,524 km (0.102 R)
• M11: 1,259,614 km (0.109 R)
• M12: 1,608,476 km (0.091 R)
• M13: 1,714,691 km (0.08 R)
• M14: 2,014,186 km (0.06 R)
• M15: 2,177,098 km (0.105 R)
• M16: 2,344,498 km (0.105 R)
• M17: 2,465,672 km (0.1 R)
• M18: 2,545,258 km (0.067 R)
• M19: 2,647,882 km (0.097 R)
• M20: 2,729,413 km (0.101 R)
• M21: 3,009,909 km (0.083 R)
• M22: 3,110,888 km (0.102 R)
• M23: 3,307,908 km (0.119 R)
• M24: 3,550,107 km (0.115 R)
• M25: 3,623,859 km (0.03 R)
• M26: 3,932,629 km (0.12 R)
• M27: 4,008,924 km (0.075 R)
• M28: 4,146,105 km (0.112 R)
• M29: 4,302,136 km (0.091 R)
• M30: 4,486,739 km (0.063 R)
• M31: 4,973,531 km (0.042 R)
• M32: 5,111,759 km (0.076 R)
• M33: 5,307,433 km (0.069 R)
• M34: 5,524,649 km (0.115 R)
• M35: 5,677,389 km (0.074 R)
• M36: 5,764,006 km (0.094 R)
• M37: 5,831,774 km (0.051 R)
• M38: 5,967,908 km (0.111 R)
• M39: 6,253,191 km (0.099 R)
• M40: 6,362,547 km (0.052 R)
• M41: 6,553,135 km (0.098 R)
• M42: 6,674,459 km (0.078 R)
• M43: 6,847,543 km (0.081 R)
• M44: 6,929,523 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.5

Radius: 13.2

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.1 AU - 1.1 AU

Year: 757 Days

Day: 11.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 126.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 66,947,214 km

• M1: 175,927 km (0.118 R)
• M2: 312,061 km (0.119 R)
• M3: 544,536 km (0.076 R)
• M4: 672,293 km (0.037 R)
• M5: 756,965 km (0.084 R)
• M6: 857,196 km (0.106 R)
• M7: 944,561 km (0.056 R)
• M8: 1,053,917 km (0.066 R)
• M9: 1,168,060 km (0.077 R)
• M10: 1,300,005 km (0.111 R)
• M11: 1,395,599 km (0.066 R)
• M12: 1,493,585 km (0.088 R)
• M13: 1,772,286 km (0.075 R)
• M14: 1,871,619 km (0.108 R)
• M15: 2,028,098 km (0.115 R)
• M16: 2,124,290 km (0.107 R)
• M17: 2,388,330 km (0.102 R)
• M18: 2,473,152 km (0.077 R)
• M19: 3,076,929 km (0.09 R)
• M20: 3,188,230 km (0.055 R)
• M21: 3,310,302 km (0.096 R)
• M22: 3,405,296 km (0.12 R)
• M23: 3,559,382 km (0.072 R)
• M24: 3,666,644 km (0.104 R)
• M25: 3,834,642 km (0.105 R)
• M26: 4,167,946 km (0.066 R)
• M27: 4,584,876 km (0.048 R)
• M28: 4,776,810 km (0.116 R)
• M29: 4,960,665 km (0.066 R)
• M30: 5,458,826 km (0.087 R)
• M31: 5,571,623 km (0.064 R)
• M32: 5,662,579 km (0.118 R)
• M33: 5,972,994 km (0.104 R)
• M34: 6,112,719 km (0.119 R)
• M35: 6,395,608 km (0.049 R)
• M36: 6,574,677 km (0.118 R)
• M37: 6,767,359 km (0.069 R)
• M38: 6,864,597 km (0.113 R)
• M39: 7,047,855 km (0.059 R)
• M40: 7,146,290 km (0.061 R)
• M41: 7,419,456 km (0.077 R)
• M42: 7,607,650 km (0.12 R)
• M43: 8,130,345 km (0.064 R)
• M44: 8,337,389 km (0.105 R)
• M45: 8,507,033 km (0.077 R)
• M46: 8,704,203 km (0.105 R)
• M47: 8,902,868 km (0.076 R)
• M48: 9,036,011 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 784

Radius: 14.5

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 1.2 AU - 1.84 AU

Year: 1229 Days

Day: 9.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 66,947,214 km

• M1: 181,462 km (0.048 R)
• M2: 316,848 km (0.044 R)
• M3: 416,331 km (0.063 R)
• M4: 515,664 km (0.12 R)
• M5: 675,434 km (0.079 R)
• M6: 999,015 km (0.104 R)
• M7: 1,160,281 km (0.09 R)
• M8: 1,330,823 km (0.089 R)
• M9: 1,616,555 km (0.104 R)
• M10: 1,716,486 km (0.09 R)
• M11: 1,827,936 km (0.106 R)
• M12: 1,922,781 km (0.064 R)
• M13: 2,039,019 km (0.04 R)
• M14: 2,340,010 km (0.06 R)
• M15: 2,645,040 km (0.097 R)
• M16: 3,305,515 km (0.108 R)
• M17: 3,457,955 km (0.097 R)
• M18: 3,600,821 km (0.041 R)
• M19: 3,782,283 km (0.059 R)
• M20: 3,979,154 km (0.045 R)
• M21: 4,141,617 km (0.064 R)
• M22: 4,499,306 km (0.12 R)
• M23: 4,590,411 km (0.114 R)
• M24: 4,761,102 km (0.112 R)
• M25: 5,014,371 km (0.112 R)
• M26: 5,176,685 km (0.1 R)
• M27: 5,313,268 km (0.094 R)
• M28: 5,478,872 km (0.104 R)
• M29: 5,900,439 km (0.117 R)
• M30: 6,000,371 km (0.091 R)
• M31: 6,715,448 km (0.094 R)
• M32: 6,864,747 km (0.097 R)
• M33: 7,015,243 km (0.079 R)
• M34: 7,106,048 km (0.114 R)
• M35: 7,197,154 km (0.115 R)
• M36: 7,288,857 km (0.08 R)
• M37: 7,504,128 km (0.026 R)
• M38: 7,643,554 km (0.1 R)
• M39: 7,925,097 km (0.072 R)
• M40: 8,083,072 km (0.053 R)
• M41: 8,210,230 km (0.095 R)
• M42: 8,466,491 km (0.118 R)
• M43: 8,628,057 km (0.086 R)
• M44: 8,725,445 km (0.099 R)
• M45: 9,102,282 km (0.073 R)
• M46: 9,300,948 km (0.079 R)
• M47: 9,518,015 km (0.112 R)
• M48: 9,770,387 km (0.099 R)
• M49: 9,889,018 km (0.064 R)
• M50: 10,042,206 km (0.092 R)
• M51: 10,558,319 km (0.055 R)
• M52: 10,784,810 km (0.09 R)
• M53: 10,907,480 km (0.107 R)
• M54: 11,083,407 km (0.054 R)
• M55: 11,527,414 km (0.084 R)
• M56: 11,832,743 km (0.072 R)
• M57: 11,959,153 km (0.115 R)
• M58: 12,122,514 km (0.097 R)
• M59: 12,341,376 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.4

Radius: 14.7

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.65 AU - 1.71 AU

Year: 1428 Days

Day: 6.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 66,947,214 km

• M1: 203,752 km (0.103 R)
• M2: 325,824 km (0.076 R)
• M3: 449,392 km (0.087 R)
• M4: 587,172 km (0.078 R)
• M5: 680,670 km (0.068 R)
• M6: 783,594 km (0.119 R)
• M7: 878,439 km (0.118 R)
• M8: 1,054,216 km (0.101 R)
• M9: 1,322,445 km (0.092 R)
• M10: 1,425,817 km (0.11 R)
• M11: 1,568,085 km (0.115 R)
• M12: 1,678,189 km (0.117 R)
• M13: 1,776,624 km (0.119 R)
• M14: 2,009,698 km (0.061 R)
• M15: 2,104,842 km (0.05 R)
• M16: 2,201,632 km (0.09 R)
• M17: 2,410,321 km (0.099 R)
• M18: 2,517,283 km (0.116 R)
• M19: 2,836,525 km (0.109 R)
• M20: 3,099,369 km (0.063 R)
• M21: 3,245,526 km (0.108 R)
• M22: 3,370,290 km (0.066 R)
• M23: 3,514,802 km (0.119 R)
• M24: 3,667,541 km (0.103 R)
• M25: 3,822,674 km (0.1 R)
• M26: 4,210,282 km (0.087 R)
• M27: 4,366,313 km (0.07 R)
• M28: 4,464,898 km (0.095 R)
• M29: 4,570,813 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.1

Radius: 9.7

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 2.04 AU - 2.86 AU

Year: 2516 Days

Day: 10.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 66,947,214 km

• M1: 124,316 km (0.115 R)
• M2: 243,097 km (0.076 R)
• M3: 324,328 km (0.03 R)
• M4: 477,068 km (0.049 R)
• M5: 599,139 km (0.115 R)
• M6: 667,506 km (0.08 R)
• M7: 732,581 km (0.049 R)
• M8: 896,241 km (0.108 R)
• M9: 1,157,439 km (0.08 R)
• M10: 1,259,764 km (0.069 R)
• M11: 1,350,121 km (0.104 R)
• M12: 1,458,280 km (0.059 R)
• M13: 1,601,894 km (0.058 R)
• M14: 1,725,163 km (0.068 R)
• M15: 2,034,082 km (0.118 R)
• M16: 2,177,098 km (0.105 R)
• M17: 2,426,178 km (0.108 R)
• M18: 2,674,810 km (0.091 R)
• M19: 2,851,784 km (0.109 R)
• M20: 2,982,084 km (0.118 R)
• M21: 3,052,993 km (0.084 R)
• M22: 3,165,790 km (0.067 R)
• M23: 3,279,933 km (0.056 R)
• M24: 3,619,670 km (0.039 R)
• M25: 3,717,357 km (0.087 R)
• M26: 3,804,872 km (0.083 R)
• M27: 4,287,325 km (0.111 R)
• M28: 4,518,304 km (0.101 R)
• M29: 4,635,440 km (0.091 R)
• M30: 4,908,456 km (0.114 R)
• M31: 5,297,261 km (0.029 R)
• M32: 5,383,579 km (0.055 R)
• M33: 5,470,495 km (0.083 R)
• M34: 5,545,294 km (0.028 R)
• M35: 5,721,221 km (0.094 R)
• M36: 5,835,364 km (0.079 R)
• M37: 6,273,088 km (0.08 R)
• M38: 6,377,656 km (0.114 R)
• M39: 6,681,639 km (0.105 R)
• M40: 6,976,796 km (0.048 R)
• M41: 7,194,162 km (0.076 R)
• M42: 7,496,648 km (0.078 R)
• M43: 7,649,538 km (0.091 R)
• M44: 7,803,324 km (0.119 R)
• M45: 7,887,697 km (0.12 R)
• M46: 8,000,644 km (0.098 R)
• M47: 8,199,758 km (0.116 R)
• M48: 8,299,839 km (0.031 R)
• M49: 8,371,646 km (0.113 R)
• M50: 8,530,220 km (0.067 R)
• M51: 8,733,524 km (0.109 R)
• M52: 8,806,527 km (0.037 R)
• M53: 9,100,637 km (0.118 R)
• M54: 9,638,142 km (0.116 R)
• M55: 9,895,600 km (0.107 R)
• M56: 10,386,431 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.7

Radius: 13.8

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 3 AU - 3.86 AU

Year: 4167 Days

Day: 13.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 66,947,214 km

• M1: 187,596 km (0.072 R)
• M2: 293,212 km (0.11 R)
• M3: 390,750 km (0.045 R)
• M4: 505,940 km (0.107 R)
• M5: 615,296 km (0.04 R)
• M6: 780,003 km (0.035 R)
• M7: 1,268,141 km (0.117 R)
• M8: 1,545,795 km (0.109 R)
• M9: 1,637,797 km (0.082 R)
• M10: 1,892,413 km (0.061 R)
• M11: 2,369,630 km (0.057 R)
• M12: 2,865,098 km (0.108 R)
• M13: 3,154,570 km (0.098 R)
• M14: 3,292,948 km (0.08 R)
• M15: 3,576,137 km (0.112 R)
• M16: 3,804,124 km (0.107 R)
• M17: 4,406,405 km (0.116 R)
• M18: 4,494,967 km (0.05 R)
• M19: 5,531,980 km (0.066 R)
• M20: 5,699,828 km (0.054 R)
• M21: 5,820,853 km (0.072 R)
• M22: 6,263,364 km (0.067 R)
• M23: 6,564,654 km (0.069 R)
• M24: 6,793,688 km (0.098 R)
• M25: 7,338,524 km (0.093 R)
• M26: 7,763,232 km (0.102 R)
• M27: 8,086,962 km (0.092 R)
• M28: 8,470,381 km (0.098 R)
• M29: 8,636,584 km (0.074 R)
• M30: 8,915,883 km (0.087 R)
• M31: 9,141,477 km (0.107 R)
• M32: 9,255,022 km (0.052 R)
• M33: 9,598,499 km (0.088 R)
• M34: 10,063,000 km (0.04 R)
• M35: 10,150,964 km (0.065 R)
• M36: 10,475,591 km (0.06 R)
• M37: 10,594,521 km (0.078 R)
• M38: 10,923,786 km (0.09 R)
• M39: 11,074,581 km (0.082 R)
• M40: 11,439,300 km (0.061 R)
• M41: 11,808,059 km (0.107 R)
• M42: 12,557,245 km (0.08 R)
• M43: 12,937,673 km (0.06 R)
• M44: 13,033,415 km (0.118 R)
• M45: 13,257,662 km (0.084 R)
• M46: 13,450,943 km (0.093 R)
• M47: 13,580,196 km (0.106 R)
• M48: 14,003,557 km (0.095 R)
• M49: 14,332,074 km (0.076 R)
• M50: 14,530,441 km (0.108 R)
• M51: 14,663,134 km (0.03 R)
• M52: 15,097,417 km (0.087 R)
• M53: 16,081,322 km (0.062 R)
• M54: 16,287,468 km (0.092 R)
• M55: 16,529,069 km (0.089 R)
• M56: 16,702,453 km (0.093 R)
• M57: 17,684,263 km (0.117 R)
• M58: 17,826,082 km (0.117 R)
• M59: 18,146,521 km (0.089 R)
• M60: 18,937,894 km (0.08 R)
• M61: 19,228,562 km (0.063 R)
• M62: 19,630,532 km (0.099 R)
• M63: 20,442,699 km (0.064 R)
• M64: 20,628,798 km (0.111 R)
• M65: 21,303,634 km (0.091 R)
• M66: 21,871,508 km (0.091 R)
• M67: 22,406,021 km (0.101 R)
• M68: 22,521,211 km (0.08 R)
• M69: 22,674,998 km (0.084 R)
• M70: 22,790,488 km (0.102 R)
• M71: 23,254,690 km (0.046 R)
• M72: 23,371,227 km (0.102 R)
• M73: 24,587,008 km (0.055 R)
• M74: 25,142,765 km (0.112 R)
• M75: 25,342,328 km (0.073 R)
• M76: 25,783,043 km (0.098 R)
• M77: 26,064,886 km (0.113 R)
• M78: 26,469,249 km (0.114 R)
• M79: 26,591,022 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 672.4

Radius: 5.4

Gravity: 23.06 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 6.53 AU - 10.75 AU

Year: 16660 Days

Day: 16.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 66,947,214 km

• M1: 78,090 km (0.096 R)
• M2: 397,482 km (0.033 R)
• M3: 468,092 km (0.05 R)
• M4: 684,410 km (0.117 R)
• M5: 906,413 km (0.103 R)
• M6: 1,149,959 km (0.116 R)
• M7: 1,253,032 km (0.096 R)
• M8: 1,386,323 km (0.105 R)
• M9: 1,468,453 km (0.112 R)
• M10: 1,552,228 km (0.098 R)
• M11: 2,310,240 km (0.096 R)
• M12: 2,507,111 km (0.093 R)
• M13: 2,573,981 km (0.107 R)
• M14: 2,675,408 km (0.051 R)
• M15: 2,743,775 km (0.112 R)
• M16: 5,959,530 km (0.075 R)
• M17: 6,049,139 km (0.11 R)
• M18: 6,503,319 km (0.059 R)
• M19: 6,874,621 km (0.103 R)
• M20: 7,205,082 km (0.112 R)
• M21: 7,637,570 km (0.076 R)
• M22: 8,177,618 km (0.051 R)
• M23: 8,227,284 km (0.058 R)
• M24: 8,527,677 km (0.088 R)
• M25: 8,729,933 km (0.077 R)
• M26: 8,831,660 km (0.108 R)
• M27: 9,502,307 km (0.097 R)
• M28: 9,712,043 km (0.052 R)
• M29: 10,892,221 km (0.118 R)
• M30: 11,111,681 km (0.114 R)
• M31: 11,834,837 km (0.097 R)
• M32: 12,630,548 km (0.047 R)
• M33: 13,209,492 km (0.118 R)
• M34: 13,796,963 km (0.083 R)
• M35: 13,856,204 km (0.045 R)
• M36: 14,513,237 km (0.09 R)
• M37: 15,058,372 km (0.115 R)
• M38: 16,230,920 km (0.09 R)
• M39: 17,689,350 km (0.113 R)
• M40: 18,011,883 km (0.09 R)
• M41: 18,206,360 km (0.097 R)
• M42: 18,466,660 km (0.093 R)
• M43: 19,853,732 km (0.076 R)
• M44: 22,100,243 km (0.072 R)
• M45: 22,308,334 km (0.112 R)
• M46: 23,006,956 km (0.084 R)
• M47: 23,571,089 km (0.074 R)
• M48: 23,854,876 km (0.088 R)
• M49: 24,211,069 km (0.092 R)
• M50: 24,928,989 km (0.082 R)
• M51: 25,073,351 km (0.12 R)
• M52: 29,915,236 km (0.104 R)
• M53: 30,607,874 km (0.111 R)
• M54: 32,638,216 km (0.094 R)
• M55: 32,875,329 km (0.03 R)
• M56: 33,113,040 km (0.068 R)
• M57: 34,953,842 km (0.045 R)
• M58: 35,034,625 km (0.112 R)
• M59: 37,239,248 km (0.068 R)
• M60: 38,817,356 km (0.09 R)
• M61: 40,926,836 km (0.052 R)
• M62: 41,182,499 km (0.06 R)
• M63: 41,438,610 km (0.079 R)
• M64: 41,952,628 km (0.091 R)
• M65: 42,900,331 km (0.062 R)
• M66: 44,116,562 km (0.046 R)
• M67: 44,378,657 km (0.116 R)
• M68: 48,192,056 km (0.084 R)
• M69: 48,281,965 km (0.073 R)
• M70: 48,372,023 km (0.05 R)
• M71: 50,548,223 km (0.081 R)
• M72: 52,016,676 km (0.114 R)
• M73: 52,478,484 km (0.089 R)
• M74: 53,406,141 km (0.106 R)
• M75: 54,152,036 km (0.086 R)
• M76: 54,339,183 km (0.074 R)
• M77: 55,183,513 km (0.041 R)
• M78: 55,654,447 km (0.107 R)
• M79: 56,032,032 km (0.117 R)
• M80: 56,126,728 km (0.053 R)
• M81: 56,790,044 km (0.042 R)
• M82: 57,265,616 km (0.109 R)
• M83: 57,360,760 km (0.115 R)
• M84: 57,742,385 km (0.028 R)
• M85: 58,507,877 km (0.09 R)
• M86: 59,180,618 km (0.032 R)
• M87: 59,469,642 km (0.095 R)
• M88: 60,727,610 km (0.081 R)
• M89: 61,213,803 km (0.103 R)
• M90: 61,799,030 km (0.098 R)
• M91: 62,484,039 km (0.109 R)
• M92: 63,960,270 km (0.071 R)
• M93: 64,950,908 km (0.095 R)
• M94: 65,348,539 km (0.12 R)
• M95: 66,546,369 km (0.12 R)
• M96: 66,947,142 km (0.093 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: 277 - 17,192 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit