🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.4

Radius: 11.3

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 1.32 AU - 1.62 AU

Year: 1169 Days

Day: 5.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 59,174,292 km

• M1: 181,313 km (0.109 R)
• M2: 253,269 km (0.057 R)
• M3: 330,462 km (0.066 R)
• M4: 409,300 km (0.047 R)
• M5: 520,152 km (0.11 R)
• M6: 634,445 km (0.101 R)
• M7: 712,983 km (0.058 R)
• M8: 804,687 km (0.071 R)
• M9: 900,878 km (0.109 R)
• M10: 1,063,491 km (0.077 R)
• M11: 1,208,601 km (0.104 R)
• M12: 1,366,427 km (0.118 R)
• M13: 1,442,123 km (0.081 R)
• M14: 1,598,004 km (0.104 R)
• M15: 1,703,022 km (0.085 R)
• M16: 1,804,150 km (0.107 R)
• M17: 1,959,583 km (0.07 R)
• M18: 2,045,751 km (0.118 R)
• M19: 2,133,266 km (0.081 R)
• M20: 2,284,210 km (0.119 R)
• M21: 2,431,564 km (0.109 R)
• M22: 2,531,794 km (0.092 R)
• M23: 2,969,069 km (0.025 R)
• M24: 3,045,513 km (0.041 R)
• M25: 3,184,939 km (0.081 R)
• M26: 3,294,893 km (0.039 R)
• M27: 3,640,614 km (0.063 R)
• M28: 3,764,032 km (0.12 R)
• M29: 4,091,352 km (0.063 R)
• M30: 4,551,216 km (0.071 R)
• M31: 4,657,580 km (0.078 R)
• M32: 4,728,938 km (0.119 R)
• M33: 4,873,001 km (0.112 R)
• M34: 4,954,532 km (0.106 R)
• M35: 5,183,716 km (0.107 R)
• M36: 5,510,438 km (0.086 R)
• M37: 5,642,981 km (0.092 R)
• M38: 5,747,849 km (0.116 R)
• M39: 5,921,084 km (0.071 R)
• M40: 6,008,299 km (0.057 R)
• M41: 6,105,687 km (0.088 R)
• M42: 6,610,730 km (0.112 R)
• M43: 6,731,455 km (0.051 R)
• M44: 6,812,537 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.2

Radius: 11.1

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.96 AU - 2.18 AU

Year: 1954 Days

Day: 10.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (69)

Outer Limit: 59,174,292 km

• M1: 138,677 km (0.114 R)
• M2: 216,917 km (0.093 R)
• M3: 373,546 km (0.055 R)
• M4: 495,767 km (0.113 R)
• M5: 717,023 km (0.086 R)
• M6: 786,436 km (0.079 R)
• M7: 886,068 km (0.075 R)
• M8: 1,039,256 km (0.071 R)
• M9: 1,160,281 km (0.087 R)
• M10: 1,233,135 km (0.041 R)
• M11: 1,361,789 km (0.111 R)
• M12: 1,484,011 km (0.06 R)
• M13: 1,727,706 km (0.104 R)
• M14: 1,872,816 km (0.106 R)
• M15: 2,111,125 km (0.102 R)
• M16: 2,201,632 km (0.039 R)
• M17: 2,521,472 km (0.119 R)
• M18: 2,827,849 km (0.089 R)
• M19: 2,942,291 km (0.075 R)
• M20: 3,430,878 km (0.082 R)
• M21: 3,708,232 km (0.118 R)
• M22: 3,802,179 km (0.112 R)
• M23: 4,105,564 km (0.04 R)
• M24: 4,350,605 km (0.081 R)
• M25: 4,550,019 km (0.083 R)
• M26: 4,992,829 km (0.109 R)
• M27: 5,096,949 km (0.109 R)
• M28: 5,166,811 km (0.108 R)
• M29: 5,272,128 km (0.094 R)
• M30: 5,700,876 km (0.104 R)
• M31: 5,846,285 km (0.076 R)
• M32: 5,974,490 km (0.108 R)
• M33: 6,497,036 km (0.109 R)
• M34: 6,763,769 km (0.052 R)
• M35: 6,879,258 km (0.115 R)
• M36: 7,249,214 km (0.104 R)
• M37: 7,585,809 km (0.12 R)
• M38: 7,786,120 km (0.051 R)
• M39: 7,866,754 km (0.076 R)
• M40: 8,110,449 km (0.061 R)
• M41: 8,253,763 km (0.078 R)
• M42: 8,459,909 km (0.055 R)
• M43: 9,046,183 km (0.118 R)
• M44: 9,194,884 km (0.102 R)
• M45: 9,322,939 km (0.101 R)
• M46: 9,537,612 km (0.112 R)
• M47: 10,125,681 km (0.091 R)
• M48: 10,213,795 km (0.094 R)
• M49: 10,413,059 km (0.077 R)
• M50: 10,635,960 km (0.042 R)
• M51: 11,041,071 km (0.111 R)
• M52: 11,154,616 km (0.092 R)
• M53: 11,612,236 km (0.05 R)
• M54: 12,193,124 km (0.03 R)
• M55: 12,381,019 km (0.094 R)
• M56: 12,546,175 km (0.079 R)
• M57: 12,640,870 km (0.11 R)
• M58: 12,831,009 km (0.109 R)
• M59: 13,820,450 km (0.081 R)
• M60: 14,435,746 km (0.097 R)
• M61: 15,337,522 km (0.025 R)
• M62: 15,413,517 km (0.116 R)
• M63: 15,616,821 km (0.075 R)
• M64: 15,795,291 km (0.09 R)
• M65: 16,077,283 km (0.115 R)
• M66: 16,283,429 km (0.08 R)
• M67: 16,802,534 km (0.108 R)
• M68: 16,933,133 km (0.108 R)
• M69: 17,300,695 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 778.8

Radius: 14.9

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 2.34 AU - 3.2 AU

Year: 3024 Days

Day: 7.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 59,174,292 km

• M1: 185,950 km (0.074 R)
• M2: 279,000 km (0.096 R)
• M3: 473,627 km (0.058 R)
• M4: 663,018 km (0.093 R)
• M5: 788,830 km (0.105 R)
• M6: 1,057,059 km (0.104 R)
• M7: 1,629,420 km (0.114 R)
• M8: 1,835,865 km (0.104 R)
• M9: 2,007,603 km (0.072 R)
• M10: 2,154,957 km (0.066 R)
• M11: 2,413,911 km (0.086 R)
• M12: 2,619,010 km (0.119 R)
• M13: 2,748,262 km (0.052 R)
• M14: 3,030,105 km (0.111 R)
• M15: 3,339,024 km (0.089 R)
• M16: 3,550,855 km (0.029 R)
• M17: 3,730,821 km (0.046 R)
• M18: 4,156,427 km (0.105 R)
• M19: 4,794,462 km (0.084 R)
• M20: 4,953,784 km (0.115 R)
• M21: 5,175,937 km (0.084 R)
• M22: 5,484,108 km (0.091 R)
• M23: 5,651,060 km (0.102 R)
• M24: 5,819,656 km (0.051 R)
• M25: 6,118,703 km (0.066 R)
• M26: 6,335,470 km (0.099 R)
• M27: 6,799,074 km (0.113 R)
• M28: 6,956,151 km (0.112 R)
• M29: 7,069,098 km (0.032 R)
• M30: 7,273,897 km (0.119 R)
• M31: 7,388,489 km (0.093 R)
• M32: 7,619,618 km (0.115 R)
• M33: 8,089,056 km (0.109 R)
• M34: 8,375,386 km (0.102 R)
• M35: 8,471,428 km (0.073 R)
• M36: 8,835,400 km (0.104 R)
• M37: 9,204,458 km (0.115 R)
• M38: 9,328,624 km (0.107 R)
• M39: 9,578,752 km (0.082 R)
• M40: 9,983,414 km (0.095 R)
• M41: 10,497,283 km (0.079 R)
• M42: 10,888,331 km (0.079 R)
• M43: 11,257,689 km (0.045 R)
• M44: 11,390,531 km (0.033 R)
• M45: 11,927,588 km (0.111 R)
• M46: 12,144,654 km (0.05 R)
• M47: 12,308,314 km (0.116 R)
• M48: 12,776,257 km (0.098 R)
• M49: 13,305,983 km (0.09 R)
• M50: 13,672,647 km (0.104 R)
• M51: 14,444,871 km (0.055 R)
• M52: 15,055,380 km (0.111 R)
• M53: 15,290,099 km (0.11 R)
• M54: 15,496,544 km (0.047 R)
• M55: 15,852,587 km (0.113 R)
• M56: 16,391,887 km (0.105 R)
• M57: 16,542,682 km (0.042 R)
• M58: 16,663,707 km (0.096 R)
• M59: 16,845,767 km (0.068 R)
• M60: 17,181,315 km (0.107 R)
• M61: 17,303,836 km (0.097 R)
• M62: 17,580,742 km (0.071 R)
• M63: 17,735,127 km (0.085 R)
• M64: 18,045,393 km (0.098 R)
• M65: 18,232,390 km (0.062 R)
• M66: 18,514,232 km (0.061 R)
• M67: 18,671,310 km (0.036 R)
• M68: 19,113,671 km (0.108 R)
• M69: 19,336,273 km (0.08 R)
• M70: 19,880,211 km (0.108 R)
• M71: 20,170,131 km (0.068 R)
• M72: 20,787,073 km (0.101 R)
• M73: 20,917,672 km (0.096 R)
• M74: 21,542,093 km (0.062 R)
• M75: 21,972,935 km (0.101 R)
• M76: 22,373,110 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.5

Radius: 8.3

Gravity: 14.03 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 2.65 AU - 4.13 AU

Year: 4095 Days

Day: 8.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 59,174,292 km

• M1: 116,986 km (0.106 R)
• M2: 213,027 km (0.046 R)
• M3: 296,653 km (0.083 R)
• M4: 375,939 km (0.087 R)
• M5: 1,122,732 km (0.091 R)
• M6: 1,519,914 km (0.117 R)
• M7: 1,734,288 km (0.083 R)
• M8: 1,923,380 km (0.113 R)
• M9: 2,029,445 km (0.119 R)
• M10: 2,173,807 km (0.101 R)
• M11: 2,340,459 km (0.068 R)
• M12: 2,492,151 km (0.11 R)
• M13: 2,569,194 km (0.1 R)
• M14: 2,627,387 km (0.118 R)
• M15: 2,725,673 km (0.055 R)
• M16: 2,905,639 km (0.083 R)
• M17: 3,007,216 km (0.046 R)
• M18: 3,089,346 km (0.034 R)
• M19: 3,214,110 km (0.12 R)
• M20: 3,929,637 km (0.108 R)
• M21: 4,363,321 km (0.089 R)
• M22: 4,456,670 km (0.111 R)
• M23: 4,692,885 km (0.12 R)
• M24: 4,788,478 km (0.042 R)
• M25: 5,882,487 km (0.116 R)
• M26: 6,968,568 km (0.098 R)
• M27: 7,023,171 km (0.065 R)
• M28: 7,858,675 km (0.119 R)
• M29: 9,470,443 km (0.098 R)
• M30: 10,019,467 km (0.076 R)
• M31: 10,578,963 km (0.108 R)
• M32: 10,862,451 km (0.111 R)
• M33: 11,437,056 km (0.061 R)
• M34: 11,630,786 km (0.089 R)
• M35: 11,890,936 km (0.113 R)
• M36: 13,050,918 km (0.098 R)
• M37: 13,389,009 km (0.106 R)
• M38: 13,695,685 km (0.059 R)
• M39: 13,764,201 km (0.103 R)
• M40: 14,769,798 km (0.118 R)
• M41: 15,157,406 km (0.081 R)
• M42: 15,619,962 km (0.032 R)
• M43: 15,870,838 km (0.109 R)
• M44: 16,231,668 km (0.068 R)
• M45: 16,778,000 km (0.061 R)
• M46: 17,963,413 km (0.119 R)
• M47: 18,264,105 km (0.039 R)
• M48: 19,175,754 km (0.102 R)
• M49: 19,290,795 km (0.073 R)
• M50: 19,367,539 km (0.106 R)
• M51: 19,444,582 km (0.098 R)
• M52: 19,714,456 km (0.106 R)
• M53: 19,908,036 km (0.09 R)
• M54: 20,219,199 km (0.089 R)
• M55: 20,297,140 km (0.1 R)
• M56: 20,375,230 km (0.099 R)
• M57: 20,649,443 km (0.101 R)
• M58: 20,767,326 km (0.085 R)
• M59: 22,079,000 km (0.091 R)
• M60: 22,199,426 km (0.032 R)
• M61: 22,846,138 km (0.078 R)
• M62: 24,034,095 km (0.11 R)
• M63: 24,158,111 km (0.07 R)
• M64: 25,199,911 km (0.063 R)
• M65: 25,874,448 km (0.065 R)
• M66: 26,512,183 km (0.092 R)
• M67: 26,940,183 km (0.114 R)
• M68: 27,068,987 km (0.078 R)
• M69: 28,281,477 km (0.111 R)
• M70: 28,762,584 km (0.119 R)
• M71: 29,202,402 km (0.098 R)
• M72: 29,423,208 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 519.3

Radius: 9.6

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.23 AU - 5.59 AU

Year: 7137 Days

Day: 13.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 59,174,292 km

• M1: 122,521 km (0.105 R)
• M2: 203,453 km (0.098 R)
• M3: 327,919 km (0.067 R)
• M4: 440,416 km (0.03 R)
• M5: 921,373 km (0.119 R)
• M6: 1,235,978 km (0.046 R)
• M7: 1,941,631 km (0.097 R)
• M8: 2,160,492 km (0.101 R)
• M9: 2,324,901 km (0.099 R)
• M10: 2,557,675 km (0.08 R)
• M11: 2,775,938 km (0.104 R)
• M12: 2,909,828 km (0.105 R)
• M13: 3,000,335 km (0.115 R)
• M14: 3,587,357 km (0.115 R)
• M15: 4,260,697 km (0.109 R)
• M16: 4,415,680 km (0.105 R)
• M17: 4,519,950 km (0.066 R)
• M18: 4,704,554 km (0.078 R)
• M19: 5,163,371 km (0.106 R)
• M20: 5,495,927 km (0.101 R)
• M21: 5,950,106 km (0.085 R)
• M22: 7,415,118 km (0.12 R)
• M23: 8,526,630 km (0.083 R)
• M24: 8,755,215 km (0.088 R)
• M25: 9,151,799 km (0.118 R)
• M26: 9,218,370 km (0.06 R)
• M27: 9,419,280 km (0.119 R)
• M28: 9,520,408 km (0.073 R)
• M29: 10,272,287 km (0.114 R)
• M30: 10,866,341 km (0.104 R)
• M31: 11,078,620 km (0.12 R)
• M32: 11,868,945 km (0.116 R)
• M33: 12,344,517 km (0.111 R)
• M34: 12,788,972 km (0.11 R)
• M35: 12,863,622 km (0.074 R)
• M36: 13,125,867 km (0.053 R)
• M37: 13,655,742 km (0.082 R)
• M38: 14,424,675 km (0.09 R)
• M39: 14,736,288 km (0.109 R)
• M40: 14,853,573 km (0.094 R)
• M41: 15,326,302 km (0.092 R)
• M42: 15,405,589 km (0.11 R)
• M43: 15,964,337 km (0.101 R)
• M44: 16,286,571 km (0.113 R)
• M45: 16,367,503 km (0.114 R)
• M46: 16,651,739 km (0.101 R)
• M47: 17,142,869 km (0.062 R)
• M48: 18,055,416 km (0.087 R)
• M49: 18,181,078 km (0.106 R)
• M50: 18,265,002 km (0.114 R)
• M51: 18,983,671 km (0.037 R)
• M52: 19,111,577 km (0.08 R)
• M53: 19,410,773 km (0.088 R)
• M54: 19,884,250 km (0.088 R)
• M55: 20,361,617 km (0.071 R)
• M56: 21,018,501 km (0.113 R)
• M57: 21,416,132 km (0.115 R)
• M58: 21,504,694 km (0.066 R)
• M59: 21,771,577 km (0.097 R)
• M60: 22,173,696 km (0.089 R)
• M61: 22,488,300 km (0.097 R)
• M62: 24,545,271 km (0.064 R)
• M63: 25,057,195 km (0.071 R)
• M64: 25,244,192 km (0.092 R)
• M65: 26,091,664 km (0.111 R)
• M66: 26,518,766 km (0.104 R)
• M67: 26,804,946 km (0.101 R)
• M68: 26,996,133 km (0.101 R)
• M69: 27,911,073 km (0.109 R)
• M70: 28,347,899 km (0.114 R)
• M71: 30,118,091 km (0.1 R)
• M72: 30,416,538 km (0.074 R)
• M73: 30,566,136 km (0.108 R)
• M74: 32,075,728 km (0.089 R)
• M75: 32,635,374 km (0.11 R)
• M76: 32,941,900 km (0.076 R)
• M77: 33,044,374 km (0.046 R)
• M78: 33,146,849 km (0.03 R)
• M79: 33,455,021 km (0.07 R)
• M80: 34,022,445 km (0.094 R)
• M81: 34,333,310 km (0.096 R)
• M82: 34,749,341 km (0.076 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 270.9

Radius: 7.9

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 8.13 AU - 12.55 AU

Year: 21812 Days

Day: 21.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 59,174,292 km

• M1: 100,081 km (0.076 R)
• M2: 157,377 km (0.106 R)
• M3: 518,656 km (0.098 R)
• M4: 570,865 km (0.112 R)
• M5: 923,468 km (0.113 R)
• M6: 1,239,568 km (0.11 R)
• M7: 1,562,251 km (0.115 R)
• M8: 1,800,859 km (0.06 R)
• M9: 1,938,489 km (0.048 R)
• M10: 1,994,439 km (0.05 R)
• M11: 2,584,752 km (0.047 R)
• M12: 2,771,899 km (0.104 R)
• M13: 2,995,997 km (0.089 R)
• M14: 3,159,806 km (0.077 R)
• M15: 3,461,844 km (0.08 R)
• M16: 3,599,175 km (0.073 R)
• M17: 3,808,463 km (0.059 R)
• M18: 4,386,060 km (0.09 R)
• M19: 4,875,395 km (0.05 R)
• M20: 5,621,738 km (0.11 R)
• M21: 5,946,515 km (0.077 R)
• M22: 6,028,794 km (0.084 R)
• M23: 6,235,838 km (0.071 R)
• M24: 6,529,797 km (0.091 R)
• M25: 6,957,498 km (0.106 R)
• M26: 7,174,714 km (0.084 R)
• M27: 7,306,210 km (0.104 R)
• M28: 7,616,028 km (0.077 R)
• M29: 7,885,154 km (0.093 R)
• M30: 8,478,609 km (0.08 R)
• M31: 8,571,210 km (0.063 R)
• M32: 9,276,414 km (0.096 R)
• M33: 9,563,792 km (0.054 R)
• M34: 9,854,012 km (0.059 R)
• M35: 12,226,036 km (0.112 R)
• M36: 12,540,939 km (0.077 R)
• M37: 12,805,578 km (0.106 R)
• M38: 13,232,680 km (0.103 R)
• M39: 13,340,241 km (0.062 R)
• M40: 14,210,751 km (0.08 R)
• M41: 14,375,907 km (0.051 R)
• M42: 14,875,563 km (0.087 R)
• M43: 14,931,513 km (0.081 R)
• M44: 15,268,108 km (0.075 R)
• M45: 16,120,816 km (0.088 R)
• M46: 17,575,955 km (0.063 R)
• M47: 17,694,287 km (0.102 R)
• M48: 19,072,831 km (0.118 R)
• M49: 19,805,561 km (0.064 R)
• M50: 19,867,196 km (0.111 R)
• M51: 20,485,484 km (0.113 R)
• M52: 21,110,204 km (0.091 R)
• M53: 21,551,219 km (0.115 R)
• M54: 21,804,638 km (0.101 R)
• M55: 21,995,375 km (0.12 R)
• M56: 22,250,439 km (0.073 R)
• M57: 22,699,233 km (0.116 R)
• M58: 23,997,892 km (0.032 R)
• M59: 26,734,785 km (0.104 R)
• M60: 30,487,148 km (0.039 R)
• M61: 32,641,807 km (0.114 R)
• M62: 32,932,774 km (0.071 R)
• M63: 33,078,632 km (0.119 R)
• M64: 33,224,640 km (0.07 R)
• M65: 33,664,158 km (0.093 R)
• M66: 34,474,680 km (0.118 R)
• M67: 34,993,784 km (0.085 R)
• M68: 36,491,409 km (0.097 R)
• M69: 37,020,387 km (0.114 R)
• M70: 38,239,310 km (0.058 R)
• M71: 38,469,242 km (0.112 R)
• M72: 39,084,837 km (0.116 R)
• M73: 39,936,498 km (0.113 R)
• M74: 40,403,692 km (0.107 R)
• M75: 41,422,154 km (0.106 R)
• M76: 43,084,935 km (0.12 R)
• M77: 43,404,177 km (0.109 R)
• M78: 43,564,097 km (0.09 R)
• M79: 43,964,720 km (0.099 R)
• M80: 45,011,905 km (0.103 R)
• M81: 45,985,937 km (0.095 R)
• M82: 46,721,061 km (0.075 R)
• M83: 46,966,850 km (0.114 R)
• M84: 48,285,555 km (0.097 R)
• M85: 50,034,653 km (0.06 R)
• M86: 51,550,379 km (0.085 R)
• M87: 52,059,012 km (0.114 R)
• M88: 55,405,217 km (0.067 R)
• M89: 56,797,973 km (0.04 R)
• M90: 57,060,368 km (0.06 R)
• M91: 57,586,504 km (0.081 R)
• M92: 57,674,317 km (0.047 R)
• M93: 58,731,825 km (0.119 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: 383 - 15,743 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit