🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.53 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 102.5

Radius: 12.9

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.97 AU - 1.13 AU

Year: 730 Days

Day: 7.8 Hours

Environment

Temp: -170 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 80,036,683 km

• M1: 161,117 km (0.048 R)
• M2: 251,923 km (0.05 R)
• M3: 349,760 km (0.07 R)
• M4: 434,582 km (0.119 R)
• M5: 517,908 km (0.07 R)
• M6: 629,807 km (0.052 R)
• M7: 751,430 km (0.069 R)
• M8: 906,862 km (0.046 R)
• M9: 1,120,488 km (0.07 R)
• M10: 1,223,860 km (0.046 R)
• M11: 1,326,335 km (0.1 R)
• M12: 1,462,170 km (0.108 R)
• M13: 1,589,328 km (0.094 R)
• M14: 1,670,260 km (0.098 R)
• M15: 1,831,976 km (0.092 R)
• M16: 1,965,118 km (0.119 R)
• M17: 2,312,484 km (0.038 R)
• M18: 2,405,085 km (0.113 R)
• M19: 2,546,455 km (0.116 R)
• M20: 2,669,125 km (0.087 R)
• M21: 2,804,661 km (0.066 R)
• M22: 2,920,450 km (0.116 R)
• M23: 3,082,913 km (0.108 R)
• M24: 3,248,368 km (0.076 R)
• M25: 3,481,741 km (0.117 R)
• M26: 3,606,505 km (0.094 R)
• M27: 3,934,125 km (0.039 R)
• M28: 4,045,575 km (0.028 R)
• M29: 4,202,055 km (0.082 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.4

Radius: 8.3

Gravity: 8.37 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.48 AU - 1.66 AU

Year: 1334 Days

Day: 12.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 142.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 80,036,683 km

• M1: 103,522 km (0.111 R)
• M2: 186,549 km (0.032 R)
• M3: 266,883 km (0.048 R)
• M4: 324,777 km (0.038 R)
• M5: 383,270 km (0.069 R)
• M6: 440,715 km (0.111 R)
• M7: 501,751 km (0.063 R)
• M8: 565,929 km (0.116 R)
• M9: 620,831 km (0.043 R)
• M10: 703,708 km (0.047 R)
• M11: 838,795 km (0.114 R)
• M12: 960,718 km (0.118 R)
• M13: 1,057,956 km (0.091 R)
• M14: 1,222,364 km (0.091 R)
• M15: 1,345,034 km (0.104 R)
• M16: 1,403,677 km (0.1 R)
• M17: 1,463,217 km (0.065 R)
• M18: 1,541,008 km (0.047 R)
• M19: 1,638,097 km (0.106 R)
• M20: 1,755,681 km (0.079 R)
• M21: 1,866,533 km (0.103 R)
• M22: 2,008,651 km (0.067 R)
• M23: 2,095,567 km (0.094 R)
• M24: 2,273,289 km (0.028 R)
• M25: 2,476,742 km (0.098 R)
• M26: 2,570,241 km (0.117 R)
• M27: 2,686,030 km (0.082 R)
• M28: 3,055,237 km (0.106 R)
• M29: 3,122,108 km (0.086 R)
• M30: 3,223,236 km (0.07 R)
• M31: 3,291,303 km (0.042 R)
• M32: 3,359,968 km (0.071 R)
• M33: 3,521,683 km (0.036 R)
• M34: 3,709,878 km (0.062 R)
• M35: 3,817,139 km (0.074 R)
• M36: 3,901,363 km (0.115 R)
• M37: 4,457,269 km (0.114 R)
• M38: 4,815,705 km (0.051 R)
• M39: 4,880,780 km (0.046 R)
• M40: 4,985,349 km (0.117 R)
• M41: 5,384,327 km (0.094 R)
• M42: 5,546,790 km (0.042 R)
• M43: 5,601,393 km (0.084 R)
• M44: 6,072,028 km (0.103 R)
• M45: 6,142,339 km (0.093 R)
• M46: 6,283,859 km (0.066 R)
• M47: 6,412,064 km (0.111 R)
• M48: 6,613,273 km (0.1 R)
• M49: 6,743,722 km (0.09 R)
• M50: 6,948,223 km (0.073 R)
• M51: 7,199,547 km (0.104 R)
• M52: 7,318,777 km (0.105 R)
• M53: 7,514,002 km (0.07 R)
• M54: 7,802,427 km (0.068 R)
• M55: 8,280,841 km (0.06 R)
• M56: 8,673,535 km (0.094 R)
• M57: 8,896,137 km (0.102 R)
• M58: 9,217,323 km (0.083 R)
• M59: 9,411,950 km (0.109 R)
• M60: 9,591,617 km (0.081 R)
• M61: 9,805,243 km (0.114 R)
• M62: 9,970,698 km (0.108 R)
• M63: 10,103,840 km (0.062 R)
• M64: 10,203,921 km (0.116 R)
• M65: 10,287,696 km (0.104 R)
• M66: 10,743,820 km (0.115 R)
• M67: 10,828,941 km (0.088 R)
• M68: 11,034,339 km (0.079 R)
• M69: 11,189,322 km (0.099 R)
• M70: 11,258,287 km (0.114 R)
• M71: 11,588,449 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182.7

Radius: 12.4

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.19 AU - 2.43 AU

Year: 2381 Days

Day: 11.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (54)

Outer Limit: 80,036,683 km

• M1: 197,768 km (0.12 R)
• M2: 334,800 km (0.078 R)
• M3: 470,037 km (0.077 R)
• M4: 558,000 km (0.048 R)
• M5: 646,712 km (0.101 R)
• M6: 806,931 km (0.04 R)
• M7: 1,018,014 km (0.069 R)
• M8: 1,115,551 km (0.063 R)
• M9: 1,192,744 km (0.1 R)
• M10: 1,643,033 km (0.107 R)
• M11: 1,768,396 km (0.097 R)
• M12: 1,943,725 km (0.112 R)
• M13: 2,038,271 km (0.114 R)
• M14: 2,144,336 km (0.11 R)
• M15: 2,331,932 km (0.093 R)
• M16: 2,494,096 km (0.088 R)
• M17: 2,681,243 km (0.07 R)
• M18: 2,905,639 km (0.095 R)
• M19: 3,036,687 km (0.111 R)
• M20: 3,315,986 km (0.085 R)
• M21: 3,557,288 km (0.072 R)
• M22: 4,069,212 km (0.097 R)
• M23: 4,478,212 km (0.081 R)
• M24: 4,861,482 km (0.115 R)
• M25: 5,017,812 km (0.103 R)
• M26: 5,483,211 km (0.118 R)
• M27: 5,865,733 km (0.028 R)
• M28: 5,990,647 km (0.116 R)
• M29: 6,228,807 km (0.052 R)
• M30: 6,556,127 km (0.061 R)
• M31: 6,743,573 km (0.113 R)
• M32: 6,845,299 km (0.05 R)
• M33: 6,962,135 km (0.102 R)
• M34: 7,436,361 km (0.108 R)
• M35: 7,526,418 km (0.114 R)
• M36: 7,616,925 km (0.078 R)
• M37: 7,905,799 km (0.072 R)
• M38: 7,997,801 km (0.096 R)
• M39: 8,105,512 km (0.11 R)
• M40: 8,213,821 km (0.092 R)
• M41: 8,541,440 km (0.102 R)
• M42: 8,714,824 km (0.1 R)
• M43: 8,809,819 km (0.069 R)
• M44: 9,177,381 km (0.094 R)
• M45: 9,306,484 km (0.026 R)
• M46: 9,927,763 km (0.083 R)
• M47: 10,043,702 km (0.093 R)
• M48: 10,243,565 km (0.09 R)
• M49: 10,327,190 km (0.081 R)
• M50: 10,953,107 km (0.101 R)
• M51: 11,158,804 km (0.105 R)
• M52: 11,452,465 km (0.113 R)
• M53: 11,626,298 km (0.101 R)
• M54: 11,801,178 km (0.111 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 551.4

Radius: 7.9

Gravity: 8.84 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 5.51 AU - 7.35 AU

Year: 11059 Days

Day: 18.2 Hours

Environment

Temp: -237 °C

Axial Tilt: 43.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 80,036,683 km

• M1: 102,475 km (0.11 R)
• M2: 213,177 km (0.09 R)
• M3: 423,212 km (0.116 R)
• M4: 552,465 km (0.117 R)
• M5: 712,086 km (0.038 R)
• M6: 815,159 km (0.11 R)
• M7: 979,567 km (0.065 R)
• M8: 1,036,713 km (0.09 R)
• M9: 1,134,849 km (0.111 R)
• M10: 1,236,127 km (0.091 R)
• M11: 1,298,360 km (0.063 R)
• M12: 1,404,574 km (0.108 R)
• M13: 1,558,062 km (0.097 R)
• M14: 1,671,158 km (0.084 R)
• M15: 2,251,897 km (0.097 R)
• M16: 2,302,910 km (0.11 R)
• M17: 2,918,206 km (0.12 R)
• M18: 3,086,802 km (0.073 R)
• M19: 3,611,741 km (0.037 R)
• M20: 3,671,730 km (0.108 R)
• M21: 4,039,143 km (0.033 R)
• M22: 4,386,359 km (0.119 R)
• M23: 4,743,150 km (0.103 R)
• M24: 4,908,456 km (0.1 R)
• M25: 4,975,027 km (0.05 R)
• M26: 5,210,643 km (0.029 R)
• M27: 5,347,077 km (0.082 R)
• M28: 5,450,000 km (0.097 R)
• M29: 5,868,724 km (0.092 R)
• M30: 6,406,828 km (0.042 R)
• M31: 6,479,682 km (0.1 R)
• M32: 6,552,985 km (0.101 R)
• M33: 6,700,189 km (0.082 R)
• M34: 7,035,438 km (0.102 R)
• M35: 7,148,534 km (0.106 R)
• M36: 7,262,079 km (0.065 R)
• M37: 7,529,560 km (0.071 R)
• M38: 7,722,541 km (0.113 R)
• M39: 7,800,183 km (0.108 R)
• M40: 8,631,348 km (0.066 R)
• M41: 9,699,028 km (0.05 R)
• M42: 9,782,803 km (0.106 R)
• M43: 11,777,092 km (0.107 R)
• M44: 12,001,190 km (0.118 R)
• M45: 12,727,936 km (0.089 R)
• M46: 13,468,895 km (0.057 R)
• M47: 15,676,211 km (0.062 R)
• M48: 16,569,909 km (0.084 R)
• M49: 16,871,498 km (0.116 R)
• M50: 17,124,319 km (0.043 R)
• M51: 18,251,239 km (0.092 R)
• M52: 19,826,056 km (0.105 R)
• M53: 20,414,425 km (0.069 R)
• M54: 20,521,986 km (0.114 R)
• M55: 20,954,323 km (0.082 R)
• M56: 21,280,447 km (0.12 R)
• M57: 21,608,216 km (0.086 R)
• M58: 22,213,638 km (0.118 R)
• M59: 22,768,796 km (0.103 R)
• M60: 23,666,682 km (0.087 R)
• M61: 24,633,234 km (0.064 R)
• M62: 25,150,095 km (0.083 R)
• M63: 26,663,427 km (0.101 R)
• M64: 26,898,894 km (0.104 R)
• M65: 28,746,727 km (0.062 R)
• M66: 29,838,492 km (0.085 R)
• M67: 30,021,749 km (0.077 R)
• M68: 30,205,456 km (0.053 R)
• M69: 31,377,106 km (0.109 R)
• M70: 32,062,264 km (0.105 R)
• M71: 33,067,562 km (0.087 R)
• M72: 33,383,962 km (0.101 R)
• M73: 34,402,873 km (0.095 R)
• M74: 35,109,274 km (0.114 R)
• M75: 35,496,583 km (0.12 R)
• M76: 36,994,506 km (0.12 R)
• M77: 39,313,124 km (0.104 R)
• M78: 39,782,562 km (0.095 R)
• M79: 40,119,007 km (0.066 R)
• M80: 41,405,848 km (0.099 R)
• M81: 42,088,613 km (0.081 R)
• M82: 44,159,197 km (0.082 R)
• M83: 44,647,036 km (0.114 R)
• M84: 44,786,760 km (0.117 R)
• M85: 44,856,772 km (0.12 R)
• M86: 45,066,658 km (0.059 R)
• M87: 45,909,791 km (0.026 R)
• M88: 46,545,582 km (0.114 R)
• M89: 47,042,098 km (0.063 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 795.6

Radius: 5.6

Gravity: 25.37 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 5.64 AU - 7.5 AU

Year: 11422 Days

Day: 22.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 80,036,683 km

• M1: 249,080 km (0.093 R)
• M2: 341,233 km (0.098 R)
• M3: 509,530 km (0.082 R)
• M4: 612,154 km (0.027 R)
• M5: 1,244,505 km (0.118 R)
• M6: 1,384,379 km (0.037 R)
• M7: 1,705,117 km (0.034 R)
• M8: 1,887,177 km (0.093 R)
• M9: 2,075,670 km (0.113 R)
• M10: 2,298,422 km (0.085 R)
• M11: 2,355,269 km (0.103 R)
• M12: 2,499,631 km (0.087 R)
• M13: 3,232,062 km (0.109 R)
• M14: 3,654,826 km (0.037 R)
• M15: 4,026,127 km (0.029 R)
• M16: 4,094,943 km (0.103 R)
• M17: 4,659,525 km (0.08 R)
• M18: 5,173,244 km (0.092 R)
• M19: 5,898,943 km (0.069 R)
• M20: 6,134,709 km (0.096 R)
• M21: 6,494,193 km (0.098 R)
• M22: 6,534,585 km (0.06 R)
• M23: 6,615,517 km (0.088 R)
• M24: 6,656,208 km (0.072 R)
• M25: 7,359,318 km (0.08 R)
• M26: 7,783,876 km (0.086 R)
• M27: 7,955,914 km (0.1 R)
• M28: 8,042,382 km (0.111 R)
• M29: 8,701,061 km (0.075 R)
• M30: 10,163,231 km (0.088 R)
• M31: 10,445,821 km (0.113 R)
• M32: 11,115,122 km (0.051 R)
• M33: 12,095,137 km (0.11 R)
• M34: 13,358,641 km (0.082 R)
• M35: 13,513,026 km (0.077 R)
• M36: 13,719,920 km (0.099 R)
• M37: 13,875,651 km (0.093 R)
• M38: 14,876,012 km (0.094 R)
• M39: 15,089,638 km (0.106 R)
• M40: 15,196,750 km (0.109 R)
• M41: 15,736,350 km (0.042 R)
• M42: 16,008,468 km (0.107 R)
• M43: 16,117,675 km (0.103 R)
• M44: 16,337,135 km (0.119 R)
• M45: 16,392,037 km (0.046 R)
• M46: 18,070,226 km (0.095 R)
• M47: 18,355,060 km (0.063 R)
• M48: 19,045,155 km (0.053 R)
• M49: 19,509,806 km (0.089 R)
• M50: 23,919,054 km (0.108 R)
• M51: 24,861,521 km (0.101 R)
• M52: 26,718,180 km (0.059 R)
• M53: 27,107,733 km (0.055 R)
• M54: 27,499,380 km (0.065 R)
• M55: 27,958,496 km (0.118 R)
• M56: 28,090,142 km (0.097 R)
• M57: 28,486,277 km (0.064 R)
• M58: 28,884,357 km (0.061 R)
• M59: 29,820,241 km (0.062 R)
• M60: 30,089,517 km (0.091 R)
• M61: 30,359,541 km (0.085 R)
• M62: 30,970,200 km (0.102 R)
• M63: 33,103,914 km (0.101 R)
• M64: 33,173,477 km (0.101 R)
• M65: 33,312,903 km (0.06 R)
• M66: 33,452,477 km (0.079 R)
• M67: 33,802,237 km (0.091 R)
• M68: 34,294,115 km (0.03 R)
• M69: 34,576,107 km (0.073 R)
• M70: 35,142,634 km (0.106 R)
• M71: 35,426,870 km (0.047 R)
• M72: 37,149,190 km (0.037 R)
• M73: 37,293,852 km (0.093 R)
• M74: 38,751,683 km (0.12 R)
• M75: 39,119,095 km (0.11 R)
• M76: 39,413,803 km (0.116 R)
• M77: 39,635,208 km (0.119 R)
• M78: 39,709,259 km (0.088 R)
• M79: 40,079,514 km (0.08 R)
• M80: 43,998,379 km (0.117 R)
• M81: 44,151,568 km (0.074 R)
• M82: 44,997,095 km (0.057 R)
• M83: 45,770,366 km (0.114 R)
• M84: 46,392,095 km (0.098 R)
• M85: 46,938,426 km (0.116 R)
• M86: 47,487,002 km (0.113 R)
• M87: 47,722,618 km (0.048 R)
• M88: 48,037,522 km (0.117 R)
• M89: 48,274,186 km (0.105 R)
• M90: 48,669,423 km (0.112 R)
• M91: 48,748,561 km (0.099 R)
• M92: 49,383,454 km (0.112 R)
• M93: 49,622,362 km (0.059 R)
• M94: 51,224,106 km (0.089 R)
• M95: 51,708,055 km (0.117 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 738.8

Radius: 6.6

Gravity: 16.96 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 9.2 AU - 10.38 AU

Year: 20776 Days

Day: 24.5 Hours

Environment

Temp: -237 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 80,036,683 km

• M1: 128,953 km (0.113 R)
• M2: 398,080 km (0.105 R)
• M3: 697,874 km (0.079 R)
• M4: 896,839 km (0.084 R)
• M5: 1,113,457 km (0.08 R)
• M6: 1,170,155 km (0.087 R)
• M7: 2,998,989 km (0.064 R)
• M8: 3,531,108 km (0.106 R)
• M9: 4,003,987 km (0.119 R)
• M10: 4,773,518 km (0.064 R)
• M11: 4,867,017 km (0.088 R)
• M12: 4,961,264 km (0.077 R)
• M13: 5,151,253 km (0.066 R)
• M14: 5,538,562 km (0.052 R)
• M15: 5,735,882 km (0.08 R)
• M16: 6,035,975 km (0.117 R)
• M17: 6,808,648 km (0.116 R)
• M18: 6,914,114 km (0.053 R)
• M19: 6,966,922 km (0.114 R)
• M20: 7,557,684 km (0.06 R)
• M21: 7,721,494 km (0.078 R)
• M22: 8,052,853 km (0.12 R)
• M23: 9,074,457 km (0.033 R)
• M24: 9,365,575 km (0.071 R)
• M25: 9,718,775 km (0.084 R)
• M26: 10,016,475 km (0.098 R)
• M27: 10,559,964 km (0.041 R)
• M28: 10,621,000 km (0.052 R)
• M29: 11,299,426 km (0.116 R)
• M30: 11,864,906 km (0.106 R)
• M31: 12,762,793 km (0.106 R)
• M32: 15,933,220 km (0.09 R)
• M33: 17,208,542 km (0.052 R)
• M34: 17,496,369 km (0.072 R)
• M35: 17,785,840 km (0.049 R)
• M36: 19,630,382 km (0.104 R)
• M37: 20,309,108 km (0.078 R)
• M38: 20,765,980 km (0.044 R)
• M39: 21,226,143 km (0.069 R)
• M40: 21,303,186 km (0.104 R)
• M41: 22,863,192 km (0.084 R)
• M42: 23,100,305 km (0.075 R)
• M43: 23,497,487 km (0.041 R)
• M44: 25,844,678 km (0.11 R)
• M45: 27,674,559 km (0.074 R)
• M46: 28,605,058 km (0.107 R)
• M47: 29,116,982 km (0.116 R)
• M48: 29,373,991 km (0.097 R)
• M49: 29,631,897 km (0.069 R)
• M50: 29,890,403 km (0.105 R)
• M51: 30,149,805 km (0.098 R)
• M52: 30,236,422 km (0.076 R)
• M53: 31,897,557 km (0.088 R)
• M54: 32,872,935 km (0.051 R)
• M55: 34,852,564 km (0.103 R)
• M56: 36,963,240 km (0.075 R)
• M57: 38,455,778 km (0.079 R)
• M58: 39,493,389 km (0.085 R)
• M59: 39,967,914 km (0.043 R)
• M60: 40,444,532 km (0.118 R)
• M61: 43,342,991 km (0.104 R)
• M62: 44,127,183 km (0.085 R)
• M63: 44,225,469 km (0.067 R)
• M64: 44,718,394 km (0.054 R)
• M65: 45,510,664 km (0.115 R)
• M66: 46,607,815 km (0.068 R)
• M67: 50,053,204 km (0.077 R)
• M68: 50,463,999 km (0.064 R)
• M69: 51,288,732 km (0.07 R)
• M70: 51,806,491 km (0.105 R)
• M71: 52,117,953 km (0.05 R)
• M72: 53,056,231 km (0.116 R)
• M73: 53,160,800 km (0.099 R)
• M74: 53,370,237 km (0.086 R)
• M75: 54,210,528 km (0.107 R)
• M76: 54,949,243 km (0.082 R)
• M77: 55,479,118 km (0.064 R)
• M78: 55,585,183 km (0.105 R)
• M79: 60,759,624 km (0.093 R)
• M80: 60,869,130 km (0.114 R)
• M81: 63,071,360 km (0.119 R)
• M82: 63,404,066 km (0.035 R)
• M83: 63,626,069 km (0.071 R)
• M84: 65,299,620 km (0.089 R)
• M85: 65,748,414 km (0.094 R)
• M86: 66,198,255 km (0.109 R)
• M87: 66,536,196 km (0.104 R)
• M88: 66,648,993 km (0.113 R)
• M89: 69,489,408 km (0.103 R)
• M90: 69,947,626 km (0.084 R)
• M91: 71,327,966 km (0.073 R)
• M92: 72,253,228 km (0.086 R)
• M93: 72,601,193 km (0.032 R)
• M94: 73,066,143 km (0.083 R)
• M95: 74,232,558 km (0.105 R)
• M96: 74,466,678 km (0.197 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 385 - 16,758 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit