🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 588.2

Radius: 14.3

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.56 AU - 0.58 AU

Year: 287 Days

Day: 6.6 Hours

Environment

Temp: -156 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 56,191,424 km

• M1: 178,919 km (0.07 R)
• M2: 319,092 km (0.106 R)
• M3: 408,552 km (0.049 R)
• M4: 503,546 km (0.116 R)
• M5: 686,355 km (0.053 R)
• M6: 897,886 km (0.104 R)
• M7: 1,144,125 km (0.115 R)
• M8: 1,252,284 km (0.058 R)
• M9: 1,348,026 km (0.116 R)
• M10: 1,442,273 km (0.088 R)
• M11: 1,633,459 km (0.043 R)
• M12: 1,792,781 km (0.081 R)
• M13: 1,915,900 km (0.044 R)
• M14: 2,103,795 km (0.085 R)
• M15: 2,224,371 km (0.06 R)
• M16: 2,327,444 km (0.051 R)
• M17: 2,462,680 km (0.091 R)
• M18: 2,605,546 km (0.097 R)
• M19: 2,704,281 km (0.108 R)
• M20: 2,852,083 km (0.05 R)
• M21: 2,986,273 km (0.095 R)
• M22: 3,111,785 km (0.11 R)
• M23: 3,222,338 km (0.087 R)
• M24: 3,413,375 km (0.096 R)
• M25: 3,527,518 km (0.071 R)
• M26: 3,754,009 km (0.114 R)
• M27: 3,943,400 km (0.091 R)
• M28: 4,039,442 km (0.038 R)
• M29: 4,178,717 km (0.079 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 245.9

Radius: 11.6

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.79 AU - 0.85 AU

Year: 495 Days

Day: 12.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 4.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 56,191,424 km

• M1: 144,362 km (0.102 R)
• M2: 232,026 km (0.107 R)
• M3: 315,502 km (0.068 R)
• M4: 421,118 km (0.048 R)
• M5: 572,511 km (0.116 R)
• M6: 677,230 km (0.108 R)
• M7: 853,605 km (0.112 R)
• M8: 934,687 km (0.06 R)
• M9: 1,014,722 km (0.084 R)
• M10: 1,097,300 km (0.067 R)
• M11: 1,223,711 km (0.067 R)
• M12: 1,325,138 km (0.113 R)
• M13: 1,420,731 km (0.089 R)
• M14: 1,496,428 km (0.111 R)
• M15: 1,591,721 km (0.112 R)
• M16: 1,689,110 km (0.047 R)
• M17: 1,774,380 km (0.101 R)
• M18: 2,013,887 km (0.097 R)
• M19: 2,094,370 km (0.115 R)
• M20: 2,196,695 km (0.037 R)
• M21: 2,279,722 km (0.109 R)
• M22: 2,401,046 km (0.108 R)
• M23: 2,481,380 km (0.074 R)
• M24: 2,600,759 km (0.047 R)
• M25: 2,738,987 km (0.096 R)
• M26: 2,811,692 km (0.033 R)
• M27: 2,908,033 km (0.065 R)
• M28: 3,022,625 km (0.093 R)
• M29: 3,162,349 km (0.11 R)
• M30: 3,310,152 km (0.042 R)
• M31: 3,460,199 km (0.109 R)
• M32: 3,575,838 km (0.052 R)
• M33: 3,655,723 km (0.069 R)
• M34: 3,754,907 km (0.118 R)
• M35: 3,861,121 km (0.088 R)
• M36: 3,955,816 km (0.065 R)
• M37: 4,032,261 km (0.102 R)
• M38: 4,115,437 km (0.098 R)
• M39: 4,218,660 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 795.7

Radius: 13.8

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.68 AU - 1.08 AU

Year: 550 Days

Day: 6.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 41.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 56,191,424 km

• M1: 172,187 km (0.09 R)
• M2: 258,505 km (0.093 R)
• M3: 348,114 km (0.107 R)
• M4: 460,163 km (0.102 R)
• M5: 552,615 km (0.114 R)
• M6: 657,483 km (0.072 R)
• M7: 780,003 km (0.078 R)
• M8: 936,632 km (0.083 R)
• M9: 1,110,166 km (0.097 R)
• M10: 1,226,553 km (0.086 R)
• M11: 1,318,256 km (0.117 R)
• M12: 1,460,524 km (0.078 R)
• M13: 1,633,310 km (0.111 R)
• M14: 1,728,753 km (0.091 R)
• M15: 2,054,577 km (0.103 R)
• M16: 2,144,336 km (0.101 R)
• M17: 2,313,830 km (0.039 R)
• M18: 2,458,491 km (0.111 R)
• M19: 2,546,754 km (0.117 R)
• M20: 2,658,803 km (0.088 R)
• M21: 2,772,497 km (0.119 R)
• M22: 2,864,650 km (0.099 R)
• M23: 2,996,894 km (0.091 R)
• M24: 3,163,397 km (0.08 R)
• M25: 3,316,585 km (0.092 R)
• M26: 3,414,721 km (0.108 R)
• M27: 3,538,738 km (0.096 R)
• M28: 3,647,495 km (0.043 R)
• M29: 3,937,266 km (0.093 R)
• M30: 4,067,566 km (0.081 R)
• M31: 4,208,188 km (0.102 R)
• M32: 4,467,292 km (0.079 R)
• M33: 4,685,705 km (0.095 R)
• M34: 4,926,258 km (0.075 R)
• M35: 5,019,906 km (0.084 R)
• M36: 5,114,153 km (0.084 R)
• M37: 5,256,720 km (0.052 R)
• M38: 5,439,229 km (0.099 R)
• M39: 5,584,788 km (0.105 R)
• M40: 5,672,751 km (0.086 R)
• M41: 5,761,164 km (0.119 R)
• M42: 5,939,335 km (0.104 R)
• M43: 6,139,646 km (0.049 R)
• M44: 6,260,820 km (0.037 R)
• M45: 6,650,224 km (0.09 R)
• M46: 6,795,633 km (0.108 R)
• M47: 7,185,036 km (0.116 R)
• M48: 7,280,928 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.2

Radius: 10.9

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.21 AU - 1.67 AU

Year: 1152 Days

Day: 5.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 56,191,424 km

• M1: 148,251 km (0.087 R)
• M2: 265,536 km (0.07 R)
• M3: 347,965 km (0.116 R)
• M4: 465,848 km (0.117 R)
• M5: 581,487 km (0.091 R)
• M6: 712,235 km (0.098 R)
• M7: 950,395 km (0.107 R)
• M8: 1,041,800 km (0.103 R)
• M9: 1,146,219 km (0.088 R)
• M10: 1,234,332 km (0.111 R)
• M11: 1,309,580 km (0.06 R)
• M12: 1,417,739 km (0.108 R)
• M13: 1,513,033 km (0.061 R)
• M14: 1,671,158 km (0.074 R)
• M15: 1,743,862 km (0.038 R)
• M16: 1,817,614 km (0.096 R)
• M17: 1,998,179 km (0.067 R)
• M18: 2,069,537 km (0.073 R)
• M19: 2,258,329 km (0.108 R)
• M20: 2,326,696 km (0.1 R)
• M21: 2,414,809 km (0.12 R)
• M22: 2,672,716 km (0.112 R)
• M23: 2,899,057 km (0.069 R)
• M24: 3,055,686 km (0.076 R)
• M25: 3,250,313 km (0.118 R)
• M26: 3,513,904 km (0.118 R)
• M27: 3,622,812 km (0.044 R)
• M28: 3,918,567 km (0.064 R)
• M29: 4,077,140 km (0.116 R)
• M30: 4,237,808 km (0.086 R)
• M31: 4,463,103 km (0.108 R)
• M32: 4,764,393 km (0.107 R)
• M33: 4,877,190 km (0.115 R)
• M34: 5,154,544 km (0.102 R)
• M35: 5,237,122 km (0.103 R)
• M36: 5,378,642 km (0.111 R)
• M37: 5,504,454 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 883.8

Radius: 12.2

Gravity: 5.94 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 3.35 AU - 5.19 AU

Year: 5884 Days

Day: 6.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 56,191,424 km

• M1: 177,872 km (0.065 R)
• M2: 262,694 km (0.116 R)
• M3: 477,068 km (0.11 R)
• M4: 559,646 km (0.038 R)
• M5: 756,367 km (0.108 R)
• M6: 856,747 km (0.11 R)
• M7: 961,914 km (0.115 R)
• M8: 1,056,011 km (0.052 R)
• M9: 1,186,610 km (0.119 R)
• M10: 2,042,759 km (0.088 R)
• M11: 2,553,037 km (0.114 R)
• M12: 2,731,956 km (0.078 R)
• M13: 3,994,263 km (0.083 R)
• M14: 4,098,234 km (0.118 R)
• M15: 4,549,720 km (0.03 R)
• M16: 4,740,308 km (0.101 R)
• M17: 5,101,287 km (0.062 R)
• M18: 5,185,960 km (0.111 R)
• M19: 5,500,265 km (0.098 R)
• M20: 5,616,054 km (0.108 R)
• M21: 6,757,037 km (0.09 R)
• M22: 7,100,513 km (0.119 R)
• M23: 7,322,068 km (0.067 R)
• M24: 7,546,016 km (0.12 R)
• M25: 7,739,745 km (0.117 R)
• M26: 8,132,140 km (0.112 R)
• M27: 8,231,324 km (0.115 R)
• M28: 9,313,814 km (0.09 R)
• M29: 9,836,509 km (0.113 R)
• M30: 10,048,339 km (0.118 R)
• M31: 11,722,040 km (0.106 R)
• M32: 12,021,984 km (0.089 R)
• M33: 12,210,627 km (0.116 R)
• M34: 13,246,742 km (0.117 R)
• M35: 13,519,908 km (0.098 R)
• M36: 13,795,018 km (0.109 R)
• M37: 13,992,637 km (0.115 R)
• M38: 14,230,946 km (0.091 R)
• M39: 15,361,308 km (0.077 R)
• M40: 15,730,814 km (0.076 R)
• M41: 16,061,725 km (0.036 R)
• M42: 16,394,879 km (0.071 R)
• M43: 17,450,741 km (0.06 R)
• M44: 17,578,947 km (0.114 R)
• M45: 17,750,386 km (0.108 R)
• M46: 18,354,761 km (0.1 R)
• M47: 18,965,868 km (0.098 R)
• M48: 19,850,441 km (0.117 R)
• M49: 20,297,738 km (0.103 R)
• M50: 20,703,149 km (0.109 R)
• M51: 20,929,640 km (0.054 R)
• M52: 21,385,016 km (0.03 R)
• M53: 21,613,900 km (0.105 R)
• M54: 21,981,762 km (0.108 R)
• M55: 22,770,441 km (0.044 R)
• M56: 23,051,087 km (0.026 R)
• M57: 23,285,806 km (0.064 R)
• M58: 23,852,333 km (0.085 R)
• M59: 24,471,220 km (0.095 R)
• M60: 24,710,576 km (0.063 R)
• M61: 25,047,171 km (0.089 R)
• M62: 25,968,246 km (0.069 R)
• M63: 26,506,648 km (0.072 R)
• M64: 26,949,757 km (0.033 R)
• M65: 27,147,526 km (0.104 R)
• M66: 27,993,502 km (0.107 R)
• M67: 28,294,044 km (0.057 R)
• M68: 28,848,005 km (0.042 R)
• M69: 29,050,411 km (0.088 R)
• M70: 29,303,979 km (0.092 R)
• M71: 29,456,419 km (0.067 R)
• M72: 30,017,860 km (0.052 R)
• M73: 30,428,356 km (0.104 R)
• M74: 30,840,798 km (0.117 R)
• M75: 30,944,170 km (0.047 R)
• M76: 31,306,945 km (0.076 R)
• M77: 32,930,381 km (0.091 R)
• M78: 33,938,970 km (0.082 R)
• M79: 35,011,437 km (0.065 R)
• M80: 35,227,307 km (0.083 R)
• M81: 35,497,780 km (0.099 R)
• M82: 36,204,181 km (0.086 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 322.3

Radius: 4.1

Gravity: 19.17 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 6.52 AU - 7.76 AU

Year: 12723 Days

Day: 15.7 Hours

Environment

Temp: -239 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 56,191,424 km

• M1: 82,279 km (0.117 R)
• M2: 165,455 km (0.108 R)
• M3: 584,479 km (0.105 R)
• M4: 677,529 km (0.12 R)
• M5: 826,229 km (0.037 R)
• M6: 1,153,699 km (0.073 R)
• M7: 1,270,984 km (0.107 R)
• M8: 1,433,596 km (0.114 R)
• M9: 1,517,371 km (0.045 R)
• M10: 1,778,419 km (0.102 R)
• M11: 2,515,189 km (0.112 R)
• M12: 2,849,241 km (0.074 R)
• M13: 2,875,421 km (0.106 R)
• M14: 3,445,688 km (0.067 R)
• M15: 4,109,154 km (0.09 R)
• M16: 4,379,328 km (0.102 R)
• M17: 4,593,403 km (0.093 R)
• M18: 4,686,303 km (0.072 R)
• M19: 4,717,270 km (0.092 R)
• M20: 4,968,444 km (0.107 R)
• M21: 5,191,645 km (0.097 R)
• M22: 5,483,510 km (0.086 R)
• M23: 5,647,918 km (0.08 R)
• M24: 6,219,083 km (0.039 R)
• M25: 6,356,264 km (0.104 R)
• M26: 7,451,919 km (0.104 R)
• M27: 7,597,477 km (0.114 R)
• M28: 7,670,631 km (0.095 R)
• M29: 7,928,538 km (0.078 R)
• M30: 10,091,274 km (0.113 R)
• M31: 10,292,782 km (0.117 R)
• M32: 10,658,848 km (0.104 R)
• M33: 10,699,689 km (0.034 R)
• M34: 10,946,375 km (0.072 R)
• M35: 11,319,921 km (0.116 R)
• M36: 11,403,546 km (0.063 R)
• M37: 11,529,358 km (0.087 R)
• M38: 11,655,469 km (0.069 R)
• M39: 11,866,851 km (0.115 R)
• M40: 12,855,394 km (0.089 R)
• M41: 13,780,806 km (0.106 R)
• M42: 15,324,058 km (0.096 R)
• M43: 15,694,911 km (0.119 R)
• M44: 16,162,853 km (0.116 R)
• M45: 17,016,608 km (0.111 R)
• M46: 17,064,480 km (0.085 R)
• M47: 17,208,243 km (0.069 R)
• M48: 17,836,255 km (0.061 R)
• M49: 18,324,393 km (0.092 R)
• M50: 18,373,461 km (0.054 R)
• M51: 18,422,529 km (0.103 R)
• M52: 18,816,869 km (0.087 R)
• M53: 19,413,764 km (0.096 R)
• M54: 20,422,054 km (0.076 R)
• M55: 20,472,917 km (0.056 R)
• M56: 21,138,030 km (0.104 R)
• M57: 21,344,026 km (0.099 R)
• M58: 21,395,637 km (0.103 R)
• M59: 21,810,173 km (0.056 R)
• M60: 22,594,365 km (0.09 R)
• M61: 22,804,999 km (0.046 R)
• M62: 23,600,859 km (0.101 R)
• M63: 23,975,452 km (0.088 R)
• M64: 24,838,782 km (0.089 R)
• M65: 25,110,601 km (0.116 R)
• M66: 26,263,402 km (0.103 R)
• M67: 26,929,711 km (0.116 R)
• M68: 28,335,931 km (0.109 R)
• M69: 28,962,148 km (0.097 R)
• M70: 29,305,624 km (0.098 R)
• M71: 29,477,812 km (0.112 R)
• M72: 29,938,872 km (0.113 R)
• M73: 30,112,256 km (0.108 R)
• M74: 30,228,195 km (0.116 R)
• M75: 30,984,711 km (0.061 R)
• M76: 31,335,967 km (0.087 R)
• M77: 31,512,193 km (0.103 R)
• M78: 31,688,719 km (0.079 R)
• M79: 32,101,758 km (0.093 R)
• M80: 32,338,572 km (0.107 R)
• M81: 32,873,534 km (0.067 R)
• M82: 32,933,074 km (0.108 R)
• M83: 33,952,284 km (0.087 R)
• M84: 34,012,422 km (0.027 R)
• M85: 34,314,311 km (0.117 R)
• M86: 36,761,134 km (0.116 R)
• M87: 37,568,513 km (0.099 R)
• M88: 39,137,197 km (0.097 R)
• M89: 39,200,476 km (0.1 R)
• M90: 40,791,300 km (0.113 R)
• M91: 41,047,861 km (0.106 R)
• M92: 41,369,197 km (0.027 R)
• M93: 41,691,431 km (0.059 R)
• M94: 42,079,188 km (0.077 R)
• M95: 42,338,292 km (0.04 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 331.5

Radius: 6.4

Gravity: 8.09 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 7.69 AU - 10.47 AU

Year: 18246 Days

Day: 19.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 56,191,424 km

• M1: 135,685 km (0.117 R)
• M2: 562,638 km (0.088 R)
• M3: 1,052,720 km (0.118 R)
• M4: 1,232,088 km (0.116 R)
• M5: 1,397,095 km (0.084 R)
• M6: 1,519,466 km (0.11 R)
• M7: 2,016,131 km (0.079 R)
• M8: 2,239,331 km (0.065 R)
• M9: 2,383,094 km (0.026 R)
• M10: 2,893,821 km (0.04 R)
• M11: 2,956,204 km (0.077 R)
• M12: 3,670,683 km (0.119 R)
• M13: 4,082,227 km (0.12 R)
• M14: 4,258,004 km (0.051 R)
• M15: 4,472,228 km (0.04 R)
• M16: 4,911,298 km (0.056 R)
• M17: 5,325,983 km (0.067 R)
• M18: 5,673,499 km (0.075 R)
• M19: 6,108,231 km (0.103 R)
• M20: 6,188,415 km (0.112 R)
• M21: 6,801,018 km (0.115 R)
• M22: 7,604,658 km (0.089 R)
• M23: 7,690,976 km (0.104 R)
• M24: 8,887,909 km (0.114 R)
• M25: 9,070,119 km (0.086 R)
• M26: 9,207,599 km (0.032 R)
• M27: 9,438,279 km (0.074 R)
• M28: 10,910,771 km (0.059 R)
• M29: 11,154,915 km (0.039 R)
• M30: 11,450,221 km (0.096 R)
• M31: 11,948,083 km (0.075 R)
• M32: 12,048,613 km (0.051 R)
• M33: 12,913,587 km (0.117 R)
• M34: 13,016,660 km (0.115 R)
• M35: 13,640,932 km (0.056 R)
• M36: 14,649,072 km (0.096 R)
• M37: 14,756,633 km (0.061 R)
• M38: 16,512,463 km (0.106 R)
• M39: 16,624,363 km (0.057 R)
• M40: 17,244,446 km (0.112 R)
• M41: 17,414,838 km (0.07 R)
• M42: 17,528,682 km (0.111 R)
• M43: 18,565,096 km (0.025 R)
• M44: 18,739,826 km (0.057 R)
• M45: 19,443,834 km (0.107 R)
• M46: 19,799,278 km (0.036 R)
• M47: 21,363,474 km (0.113 R)
• M48: 22,904,780 km (0.077 R)
• M49: 23,092,077 km (0.079 R)
• M50: 24,099,768 km (0.113 R)
• M51: 26,027,786 km (0.118 R)
• M52: 27,472,751 km (0.069 R)
• M53: 28,071,292 km (0.101 R)
• M54: 28,205,033 km (0.091 R)
• M55: 28,271,903 km (0.115 R)
• M56: 29,078,535 km (0.107 R)
• M57: 29,552,760 km (0.059 R)
• M58: 30,029,379 km (0.105 R)
• M59: 30,439,876 km (0.082 R)
• M60: 30,852,317 km (0.109 R)
• M61: 31,405,231 km (0.093 R)
• M62: 31,474,494 km (0.034 R)
• M63: 32,731,117 km (0.119 R)
• M64: 33,224,191 km (0.115 R)
• M65: 33,577,990 km (0.08 R)
• M66: 34,146,462 km (0.115 R)
• M67: 34,646,568 km (0.059 R)
• M68: 36,088,841 km (0.096 R)
• M69: 36,452,364 km (0.117 R)
• M70: 37,109,996 km (0.113 R)
• M71: 37,183,299 km (0.082 R)
• M72: 38,436,779 km (0.046 R)
• M73: 39,106,080 km (0.075 R)
• M74: 40,985,179 km (0.106 R)
• M75: 41,364,410 km (0.113 R)
• M76: 42,739,663 km (0.085 R)
• M77: 42,816,556 km (0.037 R)
• M78: 42,893,449 km (0.1 R)
• M79: 43,124,429 km (0.1 R)
• M80: 43,510,241 km (0.088 R)
• M81: 43,587,434 km (0.111 R)
• M82: 43,742,268 km (0.113 R)
• M83: 43,819,610 km (0.06 R)
• M84: 43,897,102 km (0.086 R)
• M85: 44,752,502 km (0.088 R)
• M86: 46,242,796 km (0.097 R)
• M87: 46,875,146 km (0.09 R)
• M88: 49,272,003 km (0.078 R)
• M89: 50,729,087 km (0.078 R)
• M90: 52,776,184 km (0.043 R)
• M91: 53,106,197 km (0.098 R)
• M92: 53,271,503 km (0.066 R)
• M93: 55,268,185 km (0.058 R)
• M94: 55,855,058 km (0.105 R)
• M95: 55,939,132 km (0.07 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: 155 - 17,029 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit