🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.5

Radius: 12.2

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.78 AU - 0.94 AU

Year: 515 Days

Day: 9.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 47,742,772 km

• M1: 167,101 km (0.111 R)
• M2: 276,606 km (0.101 R)
• M3: 377,435 km (0.097 R)
• M4: 496,366 km (0.076 R)
• M5: 643,570 km (0.1 R)
• M6: 748,887 km (0.106 R)
• M7: 832,063 km (0.05 R)
• M8: 952,340 km (0.09 R)
• M9: 1,055,413 km (0.118 R)
• M10: 1,158,636 km (0.068 R)
• M11: 1,265,299 km (0.104 R)
• M12: 1,358,498 km (0.093 R)
• M13: 1,471,744 km (0.108 R)
• M14: 1,588,281 km (0.118 R)
• M15: 1,759,720 km (0.08 R)
• M16: 1,952,103 km (0.084 R)
• M17: 2,046,050 km (0.051 R)
• M18: 2,151,816 km (0.095 R)
• M19: 2,285,107 km (0.1 R)
• M20: 2,363,497 km (0.11 R)
• M21: 2,453,255 km (0.082 R)
• M22: 2,587,594 km (0.08 R)
• M23: 2,680,195 km (0.113 R)
• M24: 2,801,968 km (0.099 R)
• M25: 2,886,042 km (0.086 R)
• M26: 3,022,326 km (0.088 R)
• M27: 3,207,528 km (0.073 R)
• M28: 3,432,374 km (0.027 R)
• M29: 3,656,322 km (0.104 R)
• M30: 3,736,207 km (0.114 R)
• M31: 3,904,056 km (0.074 R)
• M32: 3,998,302 km (0.071 R)
• M33: 4,182,756 km (0.057 R)
• M34: 4,285,829 km (0.058 R)
• M35: 4,402,815 km (0.074 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.7

Radius: 10.2

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.88 AU - 1.04 AU

Year: 607 Days

Day: 6.9 Hours

Environment

Temp: -162 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 47,742,772 km

• M1: 127,009 km (0.064 R)
• M2: 331,359 km (0.086 R)
• M3: 430,094 km (0.074 R)
• M4: 495,169 km (0.073 R)
• M5: 596,297 km (0.117 R)
• M6: 683,812 km (0.11 R)
• M7: 835,654 km (0.115 R)
• M8: 964,607 km (0.102 R)
• M9: 1,059,602 km (0.099 R)
• M10: 1,142,180 km (0.101 R)
• M11: 1,248,693 km (0.109 R)
• M12: 1,397,843 km (0.069 R)
• M13: 1,466,209 km (0.063 R)
• M14: 1,558,959 km (0.073 R)
• M15: 1,630,018 km (0.097 R)
• M16: 1,732,643 km (0.102 R)
• M17: 1,856,061 km (0.045 R)
• M18: 1,976,188 km (0.114 R)
• M19: 2,040,515 km (0.049 R)
• M20: 2,125,038 km (0.086 R)
• M21: 2,224,221 km (0.079 R)
• M22: 2,531,346 km (0.072 R)
• M23: 2,636,662 km (0.08 R)
• M24: 2,700,690 km (0.109 R)
• M25: 2,924,938 km (0.031 R)
• M26: 3,125,399 km (0.109 R)
• M27: 3,231,164 km (0.111 R)
• M28: 3,454,065 km (0.073 R)
• M29: 3,571,350 km (0.105 R)
• M30: 3,769,717 km (0.109 R)
• M31: 3,858,279 km (0.117 R)
• M32: 3,923,055 km (0.081 R)
• M33: 4,070,259 km (0.099 R)
• M34: 4,210,881 km (0.031 R)
• M35: 4,285,979 km (0.074 R)
• M36: 4,353,148 km (0.094 R)
• M37: 4,659,974 km (0.12 R)
• M38: 4,781,148 km (0.113 R)
• M39: 4,894,543 km (0.111 R)
• M40: 4,964,854 km (0.12 R)
• M41: 5,115,350 km (0.109 R)
• M42: 5,276,317 km (0.099 R)
• M43: 5,375,650 km (0.091 R)
• M44: 5,695,490 km (0.072 R)
• M45: 5,843,742 km (0.119 R)
• M46: 5,974,640 km (0.058 R)
• M47: 6,287,000 km (0.094 R)
• M48: 6,546,552 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.6

Radius: 13.3

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.32 AU - 1.54 AU

Year: 1104 Days

Day: 9.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 47,742,772 km

• M1: 194,477 km (0.067 R)
• M2: 333,603 km (0.092 R)
• M3: 489,634 km (0.063 R)
• M4: 586,872 km (0.066 R)
• M5: 692,040 km (0.069 R)
• M6: 788,381 km (0.031 R)
• M7: 907,311 km (0.119 R)
• M8: 1,008,589 km (0.106 R)
• M9: 1,133,054 km (0.117 R)
• M10: 1,263,055 km (0.105 R)
• M11: 1,503,459 km (0.047 R)
• M12: 1,596,658 km (0.118 R)
• M13: 1,706,912 km (0.08 R)
• M14: 1,896,452 km (0.045 R)
• M15: 2,069,238 km (0.08 R)
• M16: 2,165,728 km (0.078 R)
• M17: 2,272,092 km (0.069 R)
• M18: 2,371,874 km (0.102 R)
• M19: 2,768,309 km (0.105 R)
• M20: 2,857,319 km (0.102 R)
• M21: 3,223,236 km (0.06 R)
• M22: 3,307,759 km (0.104 R)
• M23: 3,546,367 km (0.063 R)
• M24: 3,692,225 km (0.051 R)
• M25: 3,800,684 km (0.067 R)
• M26: 3,930,086 km (0.097 R)
• M27: 4,060,984 km (0.112 R)
• M28: 4,254,863 km (0.094 R)
• M29: 4,431,089 km (0.111 R)
• M30: 4,546,429 km (0.05 R)
• M31: 4,758,708 km (0.072 R)
• M32: 4,876,891 km (0.061 R)
• M33: 5,061,494 km (0.103 R)
• M34: 5,171,299 km (0.083 R)
• M35: 5,550,231 km (0.101 R)
• M36: 5,731,693 km (0.068 R)
• M37: 6,089,082 km (0.042 R)
• M38: 6,288,047 km (0.071 R)
• M39: 6,536,978 km (0.07 R)
• M40: 6,680,742 km (0.109 R)
• M41: 6,825,552 km (0.059 R)
• M42: 6,947,026 km (0.111 R)
• M43: 7,130,583 km (0.089 R)
• M44: 7,340,618 km (0.073 R)
• M45: 7,627,995 km (0.074 R)
• M46: 7,716,109 km (0.103 R)
• M47: 7,842,818 km (0.064 R)
• M48: 8,021,288 km (0.105 R)
• M49: 8,774,813 km (0.075 R)
• M50: 8,973,479 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.3

Radius: 12.7

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.43 AU - 1.51 AU

Year: 1151 Days

Day: 8.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 47,742,772 km

• M1: 160,967 km (0.066 R)
• M2: 276,906 km (0.06 R)
• M3: 374,593 km (0.074 R)
• M4: 472,580 km (0.066 R)
• M5: 665,860 km (0.043 R)
• M6: 893,548 km (0.082 R)
• M7: 1,066,334 km (0.102 R)
• M8: 1,173,147 km (0.062 R)
• M9: 1,323,792 km (0.11 R)
• M10: 1,439,580 km (0.111 R)
• M11: 1,558,959 km (0.052 R)
• M12: 1,703,770 km (0.046 R)
• M13: 1,914,404 km (0.09 R)
• M14: 2,015,233 km (0.09 R)
• M15: 2,149,871 km (0.092 R)
• M16: 2,279,273 km (0.09 R)
• M17: 2,369,929 km (0.087 R)
• M18: 2,554,982 km (0.102 R)
• M19: 2,649,229 km (0.097 R)
• M20: 2,771,001 km (0.074 R)
• M21: 2,975,352 km (0.1 R)
• M22: 3,212,315 km (0.118 R)
• M23: 3,763,434 km (0.103 R)
• M24: 4,252,170 km (0.117 R)
• M25: 4,385,312 km (0.114 R)
• M26: 4,499,006 km (0.069 R)
• M27: 4,697,822 km (0.109 R)
• M28: 4,814,209 km (0.117 R)
• M29: 5,028,433 km (0.087 R)
• M30: 5,433,245 km (0.096 R)
• M31: 5,871,268 km (0.104 R)
• M32: 5,962,522 km (0.099 R)
• M33: 6,508,555 km (0.06 R)
• M34: 6,591,282 km (0.119 R)
• M35: 6,745,817 km (0.117 R)
• M36: 6,998,039 km (0.031 R)
• M37: 7,253,253 km (0.108 R)
• M38: 7,673,324 km (0.099 R)
• M39: 7,760,689 km (0.081 R)
• M40: 7,999,896 km (0.069 R)
• M41: 8,113,889 km (0.09 R)
• M42: 8,279,793 km (0.113 R)
• M43: 8,511,221 km (0.058 R)
• M44: 8,653,638 km (0.071 R)
• M45: 8,836,148 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.8

Radius: 13.6

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 2.81 AU - 4.05 AU

Year: 4102 Days

Day: 12.4 Hours

Environment

Temp: -204 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 47,742,772 km

• M1: 311,164 km (0.117 R)
• M2: 470,186 km (0.098 R)
• M3: 648,507 km (0.077 R)
• M4: 747,391 km (0.115 R)
• M5: 879,635 km (0.108 R)
• M6: 1,020,407 km (0.105 R)
• M7: 1,108,969 km (0.065 R)
• M8: 1,662,631 km (0.089 R)
• M9: 1,756,877 km (0.063 R)
• M10: 2,089,134 km (0.089 R)
• M11: 2,204,325 km (0.115 R)
• M12: 2,321,909 km (0.107 R)
• M13: 2,549,746 km (0.043 R)
• M14: 2,659,701 km (0.088 R)
• M15: 2,771,151 km (0.084 R)
• M16: 2,898,608 km (0.086 R)
• M17: 3,013,500 km (0.116 R)
• M18: 3,188,828 km (0.076 R)
• M19: 3,704,043 km (0.077 R)
• M20: 3,876,530 km (0.08 R)
• M21: 4,492,723 km (0.095 R)
• M22: 4,643,219 km (0.099 R)
• M23: 4,829,468 km (0.111 R)
• M24: 5,070,321 km (0.118 R)
• M25: 5,209,596 km (0.1 R)
• M26: 5,492,187 km (0.118 R)
• M27: 5,834,467 km (0.068 R)
• M28: 5,943,972 km (0.111 R)
• M29: 6,183,628 km (0.104 R)
• M30: 6,389,026 km (0.045 R)
• M31: 6,672,663 km (0.049 R)
• M32: 6,787,405 km (0.077 R)
• M33: 6,902,745 km (0.069 R)
• M34: 7,370,537 km (0.113 R)
• M35: 7,548,709 km (0.094 R)
• M36: 7,728,226 km (0.045 R)
• M37: 8,071,404 km (0.072 R)
• M38: 8,460,807 km (0.12 R)
• M39: 8,814,456 km (0.101 R)
• M40: 8,961,511 km (0.11 R)
• M41: 10,189,410 km (0.084 R)
• M42: 10,343,795 km (0.086 R)
• M43: 10,454,647 km (0.06 R)
• M44: 10,588,088 km (0.067 R)
• M45: 10,767,008 km (0.066 R)
• M46: 11,332,338 km (0.104 R)
• M47: 11,676,263 km (0.108 R)
• M48: 12,023,779 km (0.098 R)
• M49: 12,116,979 km (0.088 R)
• M50: 12,280,639 km (0.096 R)
• M51: 12,515,807 km (0.094 R)
• M52: 12,847,615 km (0.03 R)
• M53: 13,399,032 km (0.073 R)
• M54: 13,641,082 km (0.099 R)
• M55: 13,958,080 km (0.064 R)
• M56: 14,674,055 km (0.089 R)
• M57: 15,174,759 km (0.039 R)
• M58: 15,528,558 km (0.117 R)
• M59: 16,038,837 km (0.117 R)
• M60: 16,347,607 km (0.09 R)
• M61: 16,736,411 km (0.107 R)
• M62: 16,892,741 km (0.1 R)
• M63: 17,075,849 km (0.054 R)
• M64: 17,629,062 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544

Radius: 8.6

Gravity: 7.36 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 4.9 AU - 6.98 AU

Year: 9347 Days

Day: 9.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 137.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 47,742,772 km

• M1: 121,922 km (0.094 R)
• M2: 235,766 km (0.081 R)
• M3: 305,329 km (0.067 R)
• M4: 638,185 km (0.069 R)
• M5: 744,698 km (0.092 R)
• M6: 1,230,891 km (0.087 R)
• M7: 1,526,646 km (0.032 R)
• M8: 1,866,533 km (0.05 R)
• M9: 2,160,044 km (0.094 R)
• M10: 2,765,317 km (0.093 R)
• M11: 2,995,697 km (0.11 R)
• M12: 3,126,446 km (0.107 R)
• M13: 3,232,361 km (0.111 R)
• M14: 3,312,546 km (0.044 R)
• M15: 3,751,915 km (0.063 R)
• M16: 4,007,129 km (0.119 R)
• M17: 4,564,530 km (0.091 R)
• M18: 5,083,784 km (0.112 R)
• M19: 5,589,724 km (0.043 R)
• M20: 5,979,726 km (0.067 R)
• M21: 6,479,533 km (0.115 R)
• M22: 6,581,110 km (0.119 R)
• M23: 6,889,132 km (0.115 R)
• M24: 7,166,935 km (0.091 R)
• M25: 7,519,238 km (0.1 R)
• M26: 7,626,051 km (0.113 R)
• M27: 9,022,397 km (0.036 R)
• M28: 9,135,942 km (0.07 R)
• M29: 9,402,825 km (0.034 R)
• M30: 11,016,836 km (0.099 R)
• M31: 11,138,309 km (0.08 R)
• M32: 11,382,453 km (0.091 R)
• M33: 12,587,763 km (0.03 R)
• M34: 13,659,034 km (0.086 R)
• M35: 14,315,768 km (0.079 R)
• M36: 14,404,031 km (0.099 R)
• M37: 14,492,593 km (0.066 R)
• M38: 14,581,304 km (0.058 R)
• M39: 15,842,115 km (0.038 R)
• M40: 16,254,856 km (0.119 R)
• M41: 16,347,008 km (0.079 R)
• M42: 16,671,037 km (0.05 R)
• M43: 17,561,144 km (0.073 R)
• M44: 17,893,102 km (0.041 R)
• M45: 18,370,768 km (0.067 R)
• M46: 18,659,342 km (0.065 R)
• M47: 18,755,983 km (0.118 R)
• M48: 19,241,129 km (0.06 R)
• M49: 19,436,354 km (0.086 R)
• M50: 21,072,057 km (0.102 R)
• M51: 22,238,172 km (0.116 R)
• M52: 22,391,660 km (0.114 R)
• M53: 23,165,230 km (0.084 R)
• M54: 23,320,962 km (0.103 R)
• M55: 23,633,472 km (0.092 R)
• M56: 23,790,250 km (0.061 R)
• M57: 24,104,855 km (0.086 R)
• M58: 24,262,680 km (0.027 R)
• M59: 24,420,805 km (0.071 R)
• M60: 24,632,187 km (0.086 R)
• M61: 25,216,815 km (0.118 R)
• M62: 25,644,815 km (0.076 R)
• M63: 26,183,218 km (0.06 R)
• M64: 27,600,358 km (0.117 R)
• M65: 28,373,779 km (0.112 R)
• M66: 29,210,331 km (0.086 R)
• M67: 29,490,976 km (0.074 R)
• M68: 30,168,206 km (0.096 R)
• M69: 30,224,903 km (0.039 R)
• M70: 30,394,996 km (0.065 R)
• M71: 31,079,107 km (0.113 R)
• M72: 32,288,307 km (0.026 R)
• M73: 32,404,245 km (0.118 R)
• M74: 32,694,764 km (0.075 R)
• M75: 33,044,524 km (0.094 R)
• M76: 33,336,988 km (0.075 R)
• M77: 33,454,273 km (0.097 R)
• M78: 33,512,915 km (0.094 R)
• M79: 34,456,130 km (0.109 R)
• M80: 34,871,413 km (0.082 R)
• M81: 36,489,165 km (0.106 R)
• M82: 38,253,821 km (0.099 R)
• M83: 38,437,976 km (0.098 R)
• M84: 39,921,688 km (0.109 R)
• M85: 40,607,893 km (0.071 R)
• M86: 40,921,151 km (0.041 R)
• M87: 42,118,832 km (0.108 R)
• M88: 42,372,400 km (0.113 R)
• M89: 42,435,830 km (0.083 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 583.1

Radius: 3.3

Gravity: 53.54 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 6.31 AU - 6.75 AU

Year: 10774 Days

Day: 15.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 47,742,772 km

• M1: 120,127 km (0.083 R)
• M2: 196,721 km (0.109 R)
• M3: 353,350 km (0.069 R)
• M4: 466,446 km (0.1 R)
• M5: 623,075 km (0.053 R)
• M6: 656,286 km (0.026 R)
• M7: 742,155 km (0.086 R)
• M8: 1,223,112 km (0.071 R)
• M9: 1,415,794 km (0.093 R)
• M10: 1,734,139 km (0.101 R)
• M11: 1,999,226 km (0.115 R)
• M12: 2,149,123 km (0.082 R)
• M13: 2,407,179 km (0.069 R)
• M14: 2,433,509 km (0.117 R)
• M15: 2,729,563 km (0.052 R)
• M16: 3,151,429 km (0.091 R)
• M17: 3,355,181 km (0.108 R)
• M18: 3,683,848 km (0.103 R)
• M19: 4,598,788 km (0.062 R)
• M20: 4,829,767 km (0.116 R)
• M21: 5,614,558 km (0.094 R)
• M22: 6,255,884 km (0.103 R)
• M23: 6,585,298 km (0.109 R)
• M24: 6,659,200 km (0.09 R)
• M25: 7,800,931 km (0.047 R)
• M26: 7,997,053 km (0.071 R)
• M27: 8,234,615 km (0.117 R)
• M28: 9,042,742 km (0.117 R)
• M29: 9,083,882 km (0.045 R)
• M30: 9,497,969 km (0.097 R)
• M31: 10,559,964 km (0.104 R)
• M32: 10,776,881 km (0.117 R)
• M33: 11,347,597 km (0.082 R)
• M34: 11,928,186 km (0.097 R)
• M35: 12,154,079 km (0.025 R)
• M36: 12,793,909 km (0.082 R)
• M37: 13,491,484 km (0.106 R)
• M38: 13,963,465 km (0.03 R)
• M39: 14,296,919 km (0.042 R)
• M40: 15,607,995 km (0.112 R)
• M41: 16,103,164 km (0.114 R)
• M42: 18,238,524 km (0.088 R)
• M43: 18,498,674 km (0.112 R)
• M44: 19,022,566 km (0.083 R)
• M45: 19,180,691 km (0.072 R)
• M46: 19,604,352 km (0.094 R)
• M47: 20,031,155 km (0.049 R)
• M48: 20,731,273 km (0.116 R)
• M49: 20,839,731 km (0.097 R)
• M50: 20,894,035 km (0.068 R)
• M51: 21,220,608 km (0.053 R)
• M52: 21,823,936 km (0.114 R)
• M53: 21,879,137 km (0.062 R)
• M54: 23,047,347 km (0.097 R)
• M55: 25,096,688 km (0.12 R)
• M56: 25,385,861 km (0.076 R)
• M57: 25,501,949 km (0.118 R)
• M58: 26,318,753 km (0.043 R)
• M59: 26,436,188 km (0.115 R)
• M60: 26,494,980 km (0.09 R)
• M61: 26,730,447 km (0.113 R)
• M62: 27,679,346 km (0.08 R)
• M63: 27,798,725 km (0.087 R)
• M64: 27,918,254 km (0.033 R)
• M65: 28,157,910 km (0.064 R)
• M66: 28,458,452 km (0.086 R)
• M67: 30,038,056 km (0.095 R)
• M68: 30,345,030 km (0.052 R)
• M69: 31,024,205 km (0.086 R)
• M70: 32,586,156 km (0.119 R)
• M71: 34,429,950 km (0.098 R)
• M72: 35,786,055 km (0.096 R)
• M73: 36,765,322 km (0.108 R)
• M74: 36,896,520 km (0.107 R)
• M75: 37,753,416 km (0.098 R)
• M76: 38,283,890 km (0.068 R)
• M77: 39,151,259 km (0.118 R)
• M78: 39,218,279 km (0.077 R)
• M79: 39,285,298 km (0.114 R)
• M80: 40,295,234 km (0.072 R)
• M81: 40,769,459 km (0.098 R)
• M82: 40,837,376 km (0.061 R)
• M83: 40,905,294 km (0.073 R)
• M84: 41,177,412 km (0.113 R)
• M85: 41,450,129 km (0.085 R)
• M86: 42,478,315 km (0.099 R)
• M87: 44,140,497 km (0.087 R)
• M88: 44,489,509 km (0.118 R)
• M89: 45,119,915 km (0.107 R)
• M90: 45,471,470 km (0.094 R)
• M91: 46,673,488 km (0.065 R)
• M92: 47,242,708 km (0.117 R)
• M93: 47,314,067 km (0.095 R)
• M94: 47,528,291 km (0.084 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: 393 - 15,644 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit