🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.53 AU

Composition

Type: Inner (Rocky/Metallic)

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: 475.3

Radius: 12.6

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.93 AU - 1.17 AU

Year: 706 Days

Day: 10.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 40,826,291 km

• M1: 159,920 km (0.084 R)
• M2: 245,640 km (0.074 R)
• M3: 367,562 km (0.057 R)
• M4: 451,486 km (0.094 R)
• M5: 564,582 km (0.09 R)
• M6: 680,222 km (0.104 R)
• M7: 771,925 km (0.098 R)
• M8: 1,016,518 km (0.056 R)
• M9: 1,107,623 km (0.108 R)
• M10: 1,224,159 km (0.109 R)
• M11: 1,345,184 km (0.096 R)
• M12: 1,531,583 km (0.059 R)
• M13: 1,624,932 km (0.06 R)
• M14: 1,726,808 km (0.098 R)
• M15: 1,830,779 km (0.094 R)
• M16: 1,970,802 km (0.108 R)
• M17: 2,100,504 km (0.091 R)
• M18: 2,247,409 km (0.108 R)
• M19: 2,325,798 km (0.09 R)
• M20: 2,405,085 km (0.06 R)
• M21: 2,492,749 km (0.113 R)
• M22: 2,686,329 km (0.109 R)
• M23: 2,777,284 km (0.117 R)
• M24: 3,160,105 km (0.053 R)
• M25: 3,321,222 km (0.067 R)
• M26: 3,493,409 km (0.104 R)
• M27: 3,744,734 km (0.089 R)
• M28: 3,906,898 km (0.085 R)
• M29: 4,071,605 km (0.096 R)
• M30: 4,194,425 km (0.115 R)
• M31: 4,274,011 km (0.091 R)
• M32: 4,443,655 km (0.103 R)
• M33: 4,725,498 km (0.084 R)
• M34: 4,845,475 km (0.067 R)
• M35: 4,957,075 km (0.055 R)
• M36: 5,078,997 km (0.117 R)
• M37: 5,201,967 km (0.09 R)
• M38: 5,316,260 km (0.054 R)
• M39: 5,412,301 km (0.117 R)
• M40: 5,518,516 km (0.117 R)
• M41: 5,606,031 km (0.054 R)
• M42: 5,792,130 km (0.063 R)
• M43: 5,890,865 km (0.055 R)
• M44: 6,130,371 km (0.085 R)
• M45: 6,231,051 km (0.04 R)
• M46: 6,322,305 km (0.092 R)
• M47: 6,434,204 km (0.113 R)
• M48: 6,577,818 km (0.087 R)
• M49: 6,701,685 km (0.075 R)
• M50: 6,983,229 km (0.111 R)
• M51: 7,194,311 km (0.105 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.4

Radius: 13.2

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.09 AU - 1.25 AU

Year: 830 Days

Day: 7.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 40,826,291 km

• M1: 165,306 km (0.047 R)
• M2: 251,324 km (0.097 R)
• M3: 373,396 km (0.099 R)
• M4: 461,210 km (0.064 R)
• M5: 587,620 km (0.112 R)
• M6: 718,967 km (0.112 R)
• M7: 936,931 km (0.12 R)
• M8: 1,073,365 km (0.089 R)
• M9: 1,161,029 km (0.078 R)
• M10: 1,332,319 km (0.089 R)
• M11: 1,445,415 km (0.108 R)
• M12: 1,637,349 km (0.098 R)
• M13: 1,726,808 km (0.11 R)
• M14: 1,884,335 km (0.06 R)
• M15: 1,992,045 km (0.066 R)
• M16: 2,122,943 km (0.05 R)
• M17: 2,313,830 km (0.114 R)
• M18: 2,459,090 km (0.101 R)
• M19: 2,705,477 km (0.061 R)
• M20: 2,812,590 km (0.101 R)
• M21: 3,007,366 km (0.089 R)
• M22: 3,166,389 km (0.111 R)
• M23: 3,352,937 km (0.108 R)
• M24: 3,543,226 km (0.113 R)
• M25: 3,891,190 km (0.071 R)
• M26: 4,153,136 km (0.118 R)
• M27: 4,366,762 km (0.098 R)
• M28: 4,511,273 km (0.052 R)
• M29: 4,648,155 km (0.094 R)
• M30: 4,758,708 km (0.104 R)
• M31: 4,935,533 km (0.098 R)
• M32: 5,057,904 km (0.093 R)
• M33: 5,267,191 km (0.114 R)
• M34: 5,392,255 km (0.054 R)
• M35: 5,566,986 km (0.086 R)
• M36: 6,062,603 km (0.044 R)
• M37: 6,173,455 km (0.116 R)
• M38: 6,448,715 km (0.107 R)
• M39: 6,530,994 km (0.09 R)
• M40: 6,769,752 km (0.106 R)
• M41: 6,905,887 km (0.112 R)
• M42: 7,096,025 km (0.066 R)
• M43: 7,298,581 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 628.7

Radius: 9.2

Gravity: 7.43 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.15 AU - 1.33 AU

Year: 906 Days

Day: 9.6 Hours

Environment

Temp: -173 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 40,826,291 km

• M1: 121,025 km (0.114 R)
• M2: 224,397 km (0.11 R)
• M3: 344,374 km (0.119 R)
• M4: 439,219 km (0.089 R)
• M5: 519,703 km (0.091 R)
• M6: 664,364 km (0.079 R)
• M7: 776,413 km (0.078 R)
• M8: 870,959 km (0.112 R)
• M9: 1,104,930 km (0.107 R)
• M10: 1,274,574 km (0.102 R)
• M11: 1,394,851 km (0.099 R)
• M12: 1,460,075 km (0.112 R)
• M13: 1,526,497 km (0.101 R)
• M14: 1,586,336 km (0.118 R)
• M15: 1,731,895 km (0.099 R)
• M16: 2,036,177 km (0.036 R)
• M17: 2,152,564 km (0.106 R)
• M18: 2,245,614 km (0.108 R)
• M19: 2,366,190 km (0.107 R)
• M20: 2,479,884 km (0.108 R)
• M21: 2,604,649 km (0.073 R)
• M22: 2,906,687 km (0.118 R)
• M23: 3,028,908 km (0.096 R)
• M24: 3,181,498 km (0.114 R)
• M25: 3,385,849 km (0.117 R)
• M26: 3,624,756 km (0.039 R)
• M27: 3,725,885 km (0.093 R)
• M28: 3,838,233 km (0.092 R)
• M29: 4,309,765 km (0.082 R)
• M30: 4,373,943 km (0.075 R)
• M31: 4,492,723 km (0.105 R)
• M32: 4,568,719 km (0.053 R)
• M33: 4,766,338 km (0.03 R)
• M34: 4,899,629 km (0.1 R)
• M35: 5,079,446 km (0.113 R)
• M36: 5,215,580 km (0.099 R)
• M37: 5,772,683 km (0.047 R)
• M38: 5,914,950 km (0.059 R)
• M39: 6,118,403 km (0.072 R)
• M40: 6,557,024 km (0.115 R)
• M41: 6,668,325 km (0.038 R)
• M42: 6,730,408 km (0.047 R)
• M43: 6,817,624 km (0.119 R)
• M44: 6,942,987 km (0.106 R)
• M45: 7,031,100 km (0.09 R)
• M46: 7,106,946 km (0.112 R)
• M47: 7,374,726 km (0.117 R)
• M48: 7,516,246 km (0.101 R)
• M49: 7,645,648 km (0.108 R)
• M50: 7,762,933 km (0.111 R)
• M51: 7,933,175 km (0.074 R)
• M52: 8,157,721 km (0.085 R)
• M53: 8,344,270 km (0.117 R)
• M54: 8,424,604 km (0.086 R)
• M55: 8,640,324 km (0.106 R)
• M56: 8,721,556 km (0.1 R)
• M57: 8,885,066 km (0.052 R)
• M58: 8,967,196 km (0.116 R)
• M59: 9,063,237 km (0.076 R)
• M60: 9,270,281 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 622.1

Radius: 10.8

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.84 AU - 2.62 AU

Year: 2185 Days

Day: 12.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 40,826,291 km

• M1: 148,551 km (0.044 R)
• M2: 309,967 km (0.103 R)
• M3: 785,688 km (0.099 R)
• M4: 917,185 km (0.104 R)
• M5: 1,066,034 km (0.067 R)
• M6: 1,153,549 km (0.077 R)
• M7: 1,294,770 km (0.111 R)
• M8: 1,420,581 km (0.119 R)
• M9: 1,495,829 km (0.105 R)
• M10: 1,662,032 km (0.092 R)
• M11: 1,730,249 km (0.115 R)
• M12: 1,952,701 km (0.03 R)
• M13: 2,122,794 km (0.087 R)
• M14: 2,297,823 km (0.094 R)
• M15: 2,387,133 km (0.09 R)
• M16: 2,569,343 km (0.089 R)
• M17: 2,715,800 km (0.091 R)
• M18: 2,920,150 km (0.116 R)
• M19: 3,129,587 km (0.048 R)
• M20: 3,372,834 km (0.083 R)
• M21: 3,847,807 km (0.079 R)
• M22: 4,249,328 km (0.117 R)
• M23: 4,407,452 km (0.113 R)
• M24: 4,680,618 km (0.111 R)
• M25: 4,893,346 km (0.113 R)
• M26: 5,142,726 km (0.046 R)
• M27: 5,447,606 km (0.11 R)
• M28: 5,619,644 km (0.059 R)
• M29: 6,110,624 km (0.064 R)
• M30: 6,235,538 km (0.081 R)
• M31: 6,579,015 km (0.092 R)
• M32: 6,707,071 km (0.094 R)
• M33: 6,836,024 km (0.086 R)
• M34: 7,003,125 km (0.077 R)
• M35: 7,171,423 km (0.113 R)
• M36: 7,417,062 km (0.072 R)
• M37: 7,531,206 km (0.106 R)
• M38: 7,665,395 km (0.085 R)
• M39: 7,858,227 km (0.074 R)
• M40: 8,052,853 km (0.107 R)
• M41: 8,288,470 km (0.062 R)
• M42: 8,646,159 km (0.115 R)
• M43: 8,968,243 km (0.111 R)
• M44: 9,874,656 km (0.053 R)
• M45: 10,042,505 km (0.03 R)
• M46: 10,232,644 km (0.112 R)
• M47: 10,445,223 km (0.057 R)
• M48: 10,659,297 km (0.076 R)
• M49: 10,809,942 km (0.087 R)
• M50: 10,918,101 km (0.112 R)
• M51: 11,266,365 km (0.074 R)
• M52: 11,463,984 km (0.029 R)
• M53: 12,130,742 km (0.096 R)
• M54: 12,741,550 km (0.044 R)
• M55: 13,108,364 km (0.109 R)
• M56: 13,292,968 km (0.049 R)
• M57: 13,665,017 km (0.076 R)
• M58: 13,735,029 km (0.087 R)
• M59: 14,182,028 km (0.103 R)
• M60: 14,395,354 km (0.114 R)
• M61: 14,873,469 km (0.12 R)
• M62: 15,235,346 km (0.083 R)
• M63: 15,356,670 km (0.045 R)
• M64: 15,551,447 km (0.106 R)
• M65: 15,673,519 km (0.047 R)
• M66: 16,140,563 km (0.059 R)
• M67: 16,437,814 km (0.042 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 353.5

Radius: 12.4

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.63 AU - 5.75 AU

Year: 7756 Days

Day: 14.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 40,826,291 km

• M1: 245,640 km (0.118 R)
• M2: 347,815 km (0.088 R)
• M3: 442,211 km (0.108 R)
• M4: 739,761 km (0.113 R)
• M5: 844,480 km (0.083 R)
• M6: 1,222,065 km (0.076 R)
• M7: 1,616,255 km (0.113 R)
• M8: 1,810,134 km (0.068 R)
• M9: 2,012,091 km (0.112 R)
• M10: 2,182,932 km (0.068 R)
• M11: 2,319,216 km (0.118 R)
• M12: 2,787,308 km (0.096 R)
• M13: 2,871,830 km (0.054 R)
• M14: 2,978,643 km (0.07 R)
• M15: 3,196,458 km (0.093 R)
• M16: 3,787,220 km (0.118 R)
• M17: 3,904,804 km (0.075 R)
• M18: 3,999,798 km (0.105 R)
• M19: 4,661,021 km (0.107 R)
• M20: 5,198,975 km (0.106 R)
• M21: 5,303,693 km (0.074 R)
• M22: 5,382,681 km (0.027 R)
• M23: 5,892,361 km (0.078 R)
• M24: 6,139,197 km (0.111 R)
• M25: 6,277,875 km (0.118 R)
• M26: 6,871,629 km (0.066 R)
• M27: 6,986,669 km (0.037 R)
• M28: 7,073,586 km (0.104 R)
• M29: 7,306,809 km (0.1 R)
• M30: 7,542,575 km (0.08 R)
• M31: 7,840,873 km (0.073 R)
• M32: 8,051,956 km (0.082 R)
• M33: 8,234,465 km (0.104 R)
• M34: 8,758,955 km (0.069 R)
• M35: 9,518,015 km (0.083 R)
• M36: 9,743,309 km (0.118 R)
• M37: 10,100,998 km (0.056 R)
• M38: 10,595,868 km (0.118 R)
• M39: 10,896,559 km (0.106 R)
• M40: 11,166,284 km (0.039 R)
• M41: 11,953,917 km (0.082 R)
• M42: 12,197,163 km (0.078 R)
• M43: 12,442,055 km (0.11 R)
• M44: 12,865,866 km (0.058 R)
• M45: 13,727,400 km (0.082 R)
• M46: 13,945,813 km (0.06 R)
• M47: 14,128,621 km (0.091 R)
• M48: 14,607,634 km (0.102 R)
• M49: 16,887,356 km (0.101 R)
• M50: 17,199,716 km (0.08 R)
• M51: 17,435,183 km (0.088 R)
• M52: 18,628,525 km (0.106 R)
• M53: 18,709,009 km (0.093 R)
• M54: 18,870,275 km (0.114 R)
• M55: 19,848,047 km (0.094 R)
• M56: 20,136,472 km (0.082 R)
• M57: 20,884,162 km (0.12 R)
• M58: 21,303,485 km (0.098 R)
• M59: 21,556,455 km (0.104 R)
• M60: 22,363,984 km (0.038 R)
• M61: 22,664,077 km (0.096 R)
• M62: 22,965,368 km (0.069 R)
• M63: 23,354,920 km (0.032 R)
• M64: 23,615,669 km (0.118 R)
• M65: 24,360,068 km (0.034 R)
• M66: 25,245,538 km (0.11 R)
• M67: 25,916,634 km (0.066 R)
• M68: 26,186,658 km (0.056 R)
• M69: 27,964,928 km (0.087 R)
• M70: 29,265,383 km (0.072 R)
• M71: 29,359,181 km (0.061 R)
• M72: 29,687,697 km (0.072 R)
• M73: 30,064,684 km (0.083 R)
• M74: 30,490,739 km (0.085 R)
• M75: 30,823,594 km (0.06 R)
• M76: 31,014,182 km (0.082 R)
• M77: 31,588,638 km (0.091 R)
• M78: 32,311,644 km (0.111 R)
• M79: 32,456,904 km (0.098 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 26.3

Radius: 4.9

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 5.69 AU - 9.33 AU

Year: 13501 Days

Day: 25 Hours

Environment

Temp: -223 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 40,826,291 km

• M1: 62,682 km (0.119 R)
• M2: 100,829 km (0.08 R)
• M3: 281,094 km (0.113 R)
• M4: 402,418 km (0.086 R)
• M5: 601,533 km (0.094 R)
• M6: 1,250,937 km (0.12 R)
• M7: 1,392,756 km (0.086 R)
• M8: 1,730,548 km (0.09 R)
• M9: 1,996,683 km (0.065 R)
• M10: 2,148,674 km (0.072 R)
• M11: 2,304,256 km (0.116 R)
• M12: 2,347,340 km (0.118 R)
• M13: 3,592,294 km (0.087 R)
• M14: 3,675,769 km (0.031 R)
• M15: 4,086,116 km (0.111 R)
• M16: 4,190,984 km (0.092 R)
• M17: 4,350,007 km (0.113 R)
• M18: 4,820,193 km (0.117 R)
• M19: 6,084,893 km (0.1 R)
• M20: 6,753,446 km (0.116 R)
• M21: 7,211,964 km (0.072 R)
• M22: 7,296,487 km (0.091 R)
• M23: 7,360,066 km (0.11 R)
• M24: 7,530,458 km (0.107 R)
• M25: 7,766,822 km (0.113 R)
• M26: 7,962,047 km (0.118 R)
• M27: 8,027,571 km (0.083 R)
• M28: 8,557,597 km (0.066 R)
• M29: 8,917,230 km (0.039 R)
• M30: 9,076,103 km (0.102 R)
• M31: 9,512,031 km (0.091 R)
• M32: 10,001,814 km (0.114 R)
• M33: 10,332,875 km (0.061 R)
• M34: 10,404,382 km (0.111 R)
• M35: 11,200,692 km (0.044 R)
• M36: 11,519,784 km (0.095 R)
• M37: 11,767,369 km (0.101 R)
• M38: 12,242,342 km (0.056 R)
• M39: 12,419,017 km (0.045 R)
• M40: 13,237,018 km (0.057 R)
• M41: 13,809,379 km (0.095 R)
• M42: 13,993,235 km (0.104 R)
• M43: 14,072,373 km (0.079 R)
• M44: 14,257,275 km (0.09 R)
• M45: 14,389,969 km (0.045 R)
• M46: 14,870,776 km (0.113 R)
• M47: 16,762,441 km (0.117 R)
• M48: 17,324,780 km (0.102 R)
• M49: 18,036,267 km (0.047 R)
• M50: 18,266,050 km (0.114 R)
• M51: 18,438,985 km (0.095 R)
• M52: 18,583,496 km (0.074 R)
• M53: 18,960,932 km (0.08 R)
• M54: 19,370,381 km (0.101 R)
• M55: 19,605,549 km (0.073 R)
• M56: 19,664,491 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 204.1

Radius: 5.2

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 6.24 AU - 9.44 AU

Year: 14401 Days

Day: 18.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 40,826,291 km

• M1: 65,973 km (0.096 R)
• M2: 147,204 km (0.071 R)
• M3: 520,451 km (0.106 R)
• M4: 633,996 km (0.035 R)
• M5: 693,985 km (0.104 R)
• M6: 1,021,753 km (0.104 R)
• M7: 1,110,615 km (0.087 R)
• M8: 1,165,218 km (0.07 R)
• M9: 1,239,418 km (0.113 R)
• M10: 1,531,583 km (0.082 R)
• M11: 2,409,124 km (0.092 R)
• M12: 2,747,066 km (0.102 R)
• M13: 2,921,796 km (0.081 R)
• M14: 3,125,848 km (0.104 R)
• M15: 5,159,930 km (0.107 R)
• M16: 5,282,600 km (0.101 R)
• M17: 5,783,304 km (0.103 R)
• M18: 5,847,033 km (0.102 R)
• M19: 6,039,416 km (0.098 R)
• M20: 6,695,552 km (0.047 R)
• M21: 6,930,570 km (0.088 R)
• M22: 7,339,720 km (0.084 R)
• M23: 7,968,181 km (0.095 R)
• M24: 8,110,149 km (0.092 R)
• M25: 8,360,576 km (0.094 R)
• M26: 8,396,629 km (0.098 R)
• M27: 8,942,662 km (0.109 R)
• M28: 9,053,214 km (0.086 R)
• M29: 10,415,303 km (0.108 R)
• M30: 10,454,049 km (0.099 R)
• M31: 10,570,586 km (0.105 R)
• M32: 10,883,395 km (0.111 R)
• M33: 11,120,059 km (0.109 R)
• M34: 11,921,006 km (0.094 R)
• M35: 13,747,446 km (0.068 R)
• M36: 13,875,053 km (0.119 R)
• M37: 14,045,894 km (0.106 R)
• M38: 14,519,371 km (0.051 R)
• M39: 14,605,988 km (0.06 R)
• M40: 15,261,227 km (0.025 R)
• M41: 16,104,959 km (0.093 R)
• M42: 16,509,920 km (0.112 R)
• M43: 16,781,740 km (0.114 R)
• M44: 16,963,800 km (0.103 R)
• M45: 17,559,948 km (0.09 R)
• M46: 17,744,701 km (0.059 R)
• M47: 18,490,446 km (0.074 R)
• M48: 19,580,117 km (0.058 R)
• M49: 19,723,731 km (0.104 R)
• M50: 20,447,336 km (0.093 R)
• M51: 23,732,805 km (0.043 R)
• M52: 25,488,186 km (0.117 R)
• M53: 26,381,435 km (0.102 R)
• M54: 29,286,027 km (0.072 R)
• M55: 29,560,090 km (0.102 R)
• M56: 29,834,902 km (0.089 R)
• M57: 31,726,567 km (0.087 R)
• M58: 31,895,313 km (0.052 R)
• M59: 32,290,252 km (0.105 R)
• M60: 35,858,310 km (0.106 R)
• M61: 36,092,730 km (0.109 R)
• M62: 36,445,332 km (0.097 R)
• M63: 38,825,285 km (0.07 R)
• M64: 40,216,396 km (0.119 R)
• M65: 40,582,013 km (0.067 R)
• M66: 40,643,049 km (0.04 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: 172 - 20,162 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit