🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.1

Radius: 14.7

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.53 AU - 0.69 AU

Year: 329 Days

Day: 7.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,557,639 km

• M1: 182,809 km (0.119 R)
• M2: 278,102 km (0.036 R)
• M3: 378,483 km (0.119 R)
• M4: 479,910 km (0.099 R)
• M5: 604,675 km (0.115 R)
• M6: 750,233 km (0.064 R)
• M7: 847,921 km (0.095 R)
• M8: 950,844 km (0.085 R)
• M9: 1,092,663 km (0.093 R)
• M10: 1,194,389 km (0.119 R)
• M11: 1,296,116 km (0.049 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328

Radius: 14

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.55 AU - 0.75 AU

Year: 362 Days

Day: 8.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 67,557,639 km

• M1: 176,974 km (0.064 R)
• M2: 303,983 km (0.062 R)
• M3: 411,394 km (0.041 R)
• M4: 520,152 km (0.106 R)
• M5: 624,422 km (0.059 R)
• M6: 722,109 km (0.104 R)
• M7: 809,773 km (0.109 R)
• M8: 980,315 km (0.034 R)
• M9: 1,105,079 km (0.112 R)
• M10: 1,343,838 km (0.1 R)
• M11: 1,468,004 km (0.118 R)
• M12: 1,571,077 km (0.08 R)
• M13: 1,693,747 km (0.049 R)
• M14: 1,815,520 km (0.103 R)
• M15: 1,922,333 km (0.113 R)
• M16: 2,082,103 km (0.077 R)
• M17: 2,175,602 km (0.109 R)
• M18: 2,284,808 km (0.117 R)
• M19: 2,415,407 km (0.117 R)
• M20: 2,573,532 km (0.102 R)
• M21: 2,669,125 km (0.073 R)
• M22: 2,776,237 km (0.105 R)
• M23: 2,895,317 km (0.115 R)
• M24: 3,026,664 km (0.087 R)
• M25: 3,143,949 km (0.098 R)
• M26: 3,268,265 km (0.103 R)
• M27: 3,355,630 km (0.119 R)
• M28: 3,747,726 km (0.033 R)
• M29: 3,879,821 km (0.086 R)
• M30: 4,060,385 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 401.5

Radius: 12.8

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1.19 AU - 1.65 AU

Year: 1168 Days

Day: 11 Hours

Environment

Temp: -199 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (55)

Outer Limit: 67,557,639 km

• M1: 194,178 km (0.087 R)
• M2: 280,795 km (0.048 R)
• M3: 470,784 km (0.114 R)
• M4: 570,716 km (0.108 R)
• M5: 668,852 km (0.119 R)
• M6: 773,720 km (0.111 R)
• M7: 879,037 km (0.062 R)
• M8: 1,008,589 km (0.105 R)
• M9: 1,151,754 km (0.039 R)
• M10: 1,274,424 km (0.072 R)
• M11: 1,474,287 km (0.055 R)
• M12: 1,570,778 km (0.053 R)
• M13: 1,970,503 km (0.057 R)
• M14: 2,085,843 km (0.07 R)
• M15: 2,724,776 km (0.102 R)
• M16: 2,826,203 km (0.115 R)
• M17: 2,966,675 km (0.067 R)
• M18: 3,196,308 km (0.116 R)
• M19: 3,531,856 km (0.097 R)
• M20: 3,612,489 km (0.118 R)
• M21: 3,744,734 km (0.113 R)
• M22: 3,837,335 km (0.085 R)
• M23: 3,972,422 km (0.118 R)
• M24: 4,141,019 km (0.109 R)
• M25: 4,226,140 km (0.114 R)
• M26: 4,312,009 km (0.054 R)
• M27: 4,430,939 km (0.092 R)
• M28: 4,583,828 km (0.071 R)
• M29: 4,738,513 km (0.106 R)
• M30: 5,007,938 km (0.118 R)
• M31: 5,133,002 km (0.072 R)
• M32: 5,247,744 km (0.031 R)
• M33: 5,573,418 km (0.116 R)
• M34: 5,679,483 km (0.031 R)
• M35: 5,798,264 km (0.041 R)
• M36: 6,002,016 km (0.053 R)
• M37: 6,123,041 km (0.096 R)
• M38: 6,269,198 km (0.099 R)
• M39: 6,355,067 km (0.11 R)
• M40: 6,466,069 km (0.078 R)
• M41: 6,602,502 km (0.096 R)
• M42: 6,916,358 km (0.108 R)
• M43: 7,107,096 km (0.065 R)
• M44: 7,260,882 km (0.091 R)
• M45: 7,571,896 km (0.042 R)
• M46: 7,808,111 km (0.118 R)
• M47: 7,966,835 km (0.083 R)
• M48: 8,140,219 km (0.091 R)
• M49: 8,314,650 km (0.088 R)
• M50: 8,409,196 km (0.114 R)
• M51: 8,735,917 km (0.118 R)
• M52: 8,818,196 km (0.046 R)
• M53: 8,969,888 km (0.06 R)
• M54: 9,359,740 km (0.045 R)
• M55: 9,486,300 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 586.6

Radius: 10.5

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.27 AU - 1.83 AU

Year: 1332 Days

Day: 14.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (57)

Outer Limit: 67,557,639 km

• M1: 132,544 km (0.119 R)
• M2: 214,075 km (0.119 R)
• M3: 416,480 km (0.118 R)
• M4: 588,518 km (0.08 R)
• M5: 765,492 km (0.098 R)
• M6: 882,029 km (0.064 R)
• M7: 1,110,615 km (0.114 R)
• M8: 1,268,590 km (0.045 R)
• M9: 1,350,420 km (0.07 R)
• M10: 1,468,154 km (0.111 R)
• M11: 1,598,304 km (0.104 R)
• M12: 1,696,141 km (0.073 R)
• M13: 2,040,665 km (0.099 R)
• M14: 2,137,604 km (0.098 R)
• M15: 2,275,982 km (0.063 R)
• M16: 2,407,179 km (0.102 R)
• M17: 2,520,275 km (0.086 R)
• M18: 2,902,647 km (0.066 R)
• M19: 2,979,242 km (0.118 R)
• M20: 3,123,304 km (0.113 R)
• M21: 3,395,273 km (0.083 R)
• M22: 3,545,769 km (0.086 R)
• M23: 3,627,748 km (0.109 R)
• M24: 3,817,588 km (0.059 R)
• M25: 3,901,812 km (0.102 R)
• M26: 3,974,367 km (0.091 R)
• M27: 4,319,190 km (0.078 R)
• M28: 4,622,574 km (0.057 R)
• M29: 4,802,690 km (0.041 R)
• M30: 4,919,825 km (0.088 R)
• M31: 5,064,187 km (0.113 R)
• M32: 5,210,045 km (0.106 R)
• M33: 5,316,858 km (0.059 R)
• M34: 5,573,867 km (0.086 R)
• M35: 5,655,847 km (0.096 R)
• M36: 5,793,327 km (0.056 R)
• M37: 5,946,067 km (0.11 R)
• M38: 6,170,314 km (0.107 R)
• M39: 6,241,074 km (0.044 R)
• M40: 6,340,556 km (0.087 R)
• M41: 6,411,914 km (0.089 R)
• M42: 6,483,422 km (0.077 R)
• M43: 6,613,123 km (0.078 R)
• M44: 6,933,562 km (0.081 R)
• M45: 7,036,635 km (0.076 R)
• M46: 8,172,382 km (0.116 R)
• M47: 8,500,600 km (0.095 R)
• M48: 8,674,283 km (0.093 R)
• M49: 8,801,292 km (0.078 R)
• M50: 9,057,253 km (0.111 R)
• M51: 9,592,814 km (0.109 R)
• M52: 9,658,487 km (0.032 R)
• M53: 10,407,225 km (0.105 R)
• M54: 10,780,023 km (0.081 R)
• M55: 10,933,809 km (0.065 R)
• M56: 11,312,890 km (0.118 R)
• M57: 11,591,292 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 81.7

Radius: 9.4

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.89 AU - 2.09 AU

Year: 1938 Days

Day: 6.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 67,557,639 km

• M1: 128,505 km (0.101 R)
• M2: 193,729 km (0.072 R)
• M3: 267,331 km (0.116 R)
• M4: 477,516 km (0.103 R)
• M5: 564,582 km (0.091 R)
• M6: 624,422 km (0.088 R)
• M7: 716,275 km (0.118 R)
• M8: 981,063 km (0.027 R)
• M9: 1,055,114 km (0.1 R)
• M10: 1,190,799 km (0.049 R)
• M11: 1,251,685 km (0.099 R)
• M12: 1,415,196 km (0.063 R)
• M13: 1,714,840 km (0.116 R)
• M14: 1,890,169 km (0.115 R)
• M15: 2,078,662 km (0.08 R)
• M16: 2,265,959 km (0.041 R)
• M17: 2,844,155 km (0.074 R)
• M18: 2,910,277 km (0.084 R)
• M19: 2,976,998 km (0.109 R)
• M20: 3,069,449 km (0.074 R)
• M21: 3,162,948 km (0.106 R)
• M22: 3,440,153 km (0.064 R)
• M23: 3,501,937 km (0.102 R)
• M24: 3,644,503 km (0.111 R)
• M25: 3,907,796 km (0.032 R)
• M26: 4,009,223 km (0.073 R)
• M27: 4,111,548 km (0.118 R)
• M28: 4,233,769 km (0.099 R)
• M29: 4,338,039 km (0.103 R)
• M30: 4,424,058 km (0.098 R)
• M31: 4,832,759 km (0.107 R)
• M32: 5,172,646 km (0.101 R)
• M33: 5,263,900 km (0.08 R)
• M34: 5,355,753 km (0.085 R)
• M35: 5,520,311 km (0.101 R)
• M36: 5,655,248 km (0.09 R)
• M37: 6,024,157 km (0.113 R)
• M38: 6,433,456 km (0.056 R)
• M39: 6,608,486 km (0.107 R)
• M40: 6,862,802 km (0.077 R)
• M41: 6,974,402 km (0.081 R)
• M42: 7,176,958 km (0.084 R)
• M43: 7,335,681 km (0.066 R)
• M44: 7,610,792 km (0.069 R)
• M45: 7,854,187 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.9

Radius: 12.8

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.54 AU - 2.5 AU

Year: 1982 Days

Day: 11.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 67,557,639 km

• M1: 218,562 km (0.118 R)
• M2: 331,509 km (0.044 R)
• M3: 445,652 km (0.113 R)
• M4: 590,014 km (0.062 R)
• M5: 787,334 km (0.093 R)
• M6: 939,475 km (0.12 R)
• M7: 1,134,251 km (0.105 R)
• M8: 1,232,836 km (0.105 R)
• M9: 1,574,218 km (0.068 R)
• M10: 1,751,641 km (0.116 R)
• M11: 1,945,670 km (0.107 R)
• M12: 2,096,016 km (0.083 R)
• M13: 2,188,168 km (0.103 R)
• M14: 2,440,689 km (0.119 R)
• M15: 2,769,954 km (0.101 R)
• M16: 3,207,827 km (0.082 R)
• M17: 3,447,184 km (0.089 R)
• M18: 3,618,324 km (0.081 R)
• M19: 3,779,740 km (0.104 R)
• M20: 3,918,267 km (0.059 R)
• M21: 4,226,439 km (0.117 R)
• M22: 4,717,120 km (0.043 R)
• M23: 4,811,965 km (0.031 R)
• M24: 4,976,224 km (0.048 R)
• M25: 5,072,864 km (0.104 R)
• M26: 5,170,252 km (0.071 R)
• M27: 5,282,151 km (0.032 R)
• M28: 5,380,886 km (0.095 R)
• M29: 5,551,427 km (0.094 R)
• M30: 5,666,169 km (0.045 R)
• M31: 5,752,637 km (0.112 R)
• M32: 5,941,728 km (0.046 R)
• M33: 6,296,425 km (0.119 R)
• M34: 6,688,371 km (0.07 R)
• M35: 6,871,928 km (0.11 R)
• M36: 7,799,135 km (0.084 R)
• M37: 7,895,626 km (0.085 R)
• M38: 8,815,503 km (0.082 R)
• M39: 8,916,183 km (0.075 R)
• M40: 9,118,439 km (0.102 R)
• M41: 9,271,178 km (0.101 R)
• M42: 9,527,739 km (0.083 R)
• M43: 9,613,758 km (0.106 R)
• M44: 9,700,076 km (0.086 R)
• M45: 10,012,885 km (0.109 R)
• M46: 10,417,397 km (0.097 R)
• M47: 10,594,970 km (0.112 R)
• M48: 10,755,638 km (0.069 R)
• M49: 11,206,227 km (0.029 R)
• M50: 11,406,538 km (0.102 R)
• M51: 12,500,847 km (0.114 R)
• M52: 12,595,094 km (0.083 R)
• M53: 12,784,335 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.5

Radius: 8.8

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.69 AU - 3.77 AU

Year: 4972 Days

Day: 6.6 Hours

Environment

Temp: -226 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 67,557,639 km

• M1: 205,248 km (0.092 R)
• M2: 260,450 km (0.066 R)
• M3: 367,412 km (0.104 R)
• M4: 427,551 km (0.067 R)
• M5: 607,068 km (0.116 R)
• M6: 784,940 km (0.065 R)
• M7: 866,471 km (0.073 R)
• M8: 1,038,508 km (0.051 R)
• M9: 1,494,483 km (0.091 R)
• M10: 1,562,849 km (0.082 R)
• M11: 1,620,594 km (0.091 R)
• M12: 1,690,755 km (0.083 R)
• M13: 1,786,199 km (0.054 R)
• M14: 2,007,304 km (0.12 R)
• M15: 2,316,224 km (0.09 R)
• M16: 2,598,814 km (0.118 R)
• M17: 2,779,379 km (0.074 R)
• M18: 3,152,925 km (0.104 R)
• M19: 3,271,107 km (0.117 R)
• M20: 3,466,332 km (0.079 R)
• M21: 3,588,404 km (0.101 R)
• M22: 3,789,912 km (0.038 R)
• M23: 4,074,896 km (0.097 R)
• M24: 4,532,217 km (0.062 R)
• M25: 4,665,958 km (0.107 R)
• M26: 4,920,124 km (0.072 R)
• M27: 5,144,072 km (0.058 R)
• M28: 5,318,653 km (0.047 R)
• M29: 5,637,895 km (0.12 R)
• M30: 5,709,702 km (0.107 R)
• M31: 5,836,112 km (0.045 R)
• M32: 6,054,974 km (0.106 R)
• M33: 6,295,078 km (0.12 R)
• M34: 6,351,028 km (0.056 R)
• M35: 6,976,497 km (0.072 R)
• M36: 7,034,241 km (0.064 R)
• M37: 8,265,133 km (0.071 R)
• M38: 8,428,793 km (0.085 R)
• M39: 8,552,211 km (0.09 R)
• M40: 8,614,294 km (0.056 R)
• M41: 9,010,130 km (0.098 R)
• M42: 9,136,391 km (0.075 R)
• M43: 9,561,398 km (0.096 R)
• M44: 10,254,934 km (0.094 R)
• M45: 10,519,273 km (0.08 R)
• M46: 10,652,266 km (0.097 R)
• M47: 10,897,457 km (0.073 R)
• M48: 11,099,564 km (0.042 R)
• M49: 11,302,867 km (0.088 R)
• M50: 11,484,629 km (0.106 R)
• M51: 11,828,105 km (0.093 R)
• M52: 12,174,873 km (0.04 R)
• M53: 12,267,923 km (0.117 R)
• M54: 12,337,785 km (0.068 R)
• M55: 12,478,108 km (0.053 R)
• M56: 12,783,886 km (0.076 R)
• M57: 13,187,501 km (0.037 R)
• M58: 13,716,030 km (0.046 R)
• M59: 13,909,909 km (0.079 R)
• M60: 13,982,913 km (0.07 R)
• M61: 14,129,220 km (0.068 R)
• M62: 14,645,183 km (0.11 R)
• M63: 15,192,412 km (0.069 R)
• M64: 15,342,907 km (0.049 R)
• M65: 15,822,518 km (0.03 R)
• M66: 15,949,527 km (0.053 R)
• M67: 16,025,821 km (0.098 R)
• M68: 16,563,925 km (0.108 R)
• M69: 16,718,759 km (0.111 R)
• M70: 17,447,600 km (0.119 R)
• M71: 17,631,455 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 977.4

Radius: 7.9

Gravity: 15.66 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 6.91 AU - 7.97 AU

Year: 14008 Days

Day: 24 Hours

Environment

Temp: -231 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 67,557,639 km

• M1: 129,552 km (0.118 R)
• M2: 234,719 km (0.097 R)
• M3: 578,345 km (0.083 R)
• M4: 829,969 km (0.076 R)
• M5: 898,186 km (0.109 R)
• M6: 1,242,111 km (0.077 R)
• M7: 1,347,578 km (0.084 R)
• M8: 1,428,809 km (0.093 R)
• M9: 1,889,421 km (0.109 R)
• M10: 2,393,416 km (0.07 R)
• M11: 2,763,372 km (0.117 R)
• M12: 3,079,622 km (0.108 R)
• M13: 3,260,186 km (0.108 R)
• M14: 3,707,933 km (0.098 R)
• M15: 3,900,316 km (0.081 R)
• M16: 4,095,990 km (0.06 R)
• M17: 4,456,221 km (0.093 R)
• M18: 5,036,811 km (0.043 R)
• M19: 5,249,988 km (0.076 R)
• M20: 5,907,171 km (0.107 R)
• M21: 6,451,558 km (0.038 R)
• M22: 6,683,135 km (0.071 R)
• M23: 8,079,482 km (0.118 R)
• M24: 9,562,595 km (0.06 R)
• M25: 9,667,912 km (0.098 R)
• M26: 9,932,999 km (0.101 R)
• M27: 10,093,219 km (0.093 R)
• M28: 12,366,957 km (0.095 R)
• M29: 12,424,402 km (0.095 R)
• M30: 13,178,376 km (0.059 R)
• M31: 14,669,418 km (0.059 R)
• M32: 14,912,963 km (0.076 R)
• M33: 16,465,190 km (0.052 R)
• M34: 19,519,231 km (0.118 R)
• M35: 21,282,092 km (0.068 R)
• M36: 22,322,097 km (0.119 R)
• M37: 22,532,132 km (0.105 R)
• M38: 23,095,368 km (0.039 R)
• M39: 25,906,462 km (0.115 R)
• M40: 27,764,617 km (0.102 R)
• M41: 28,292,398 km (0.109 R)
• M42: 28,671,629 km (0.093 R)
• M43: 28,976,060 km (0.115 R)
• M44: 29,358,283 km (0.068 R)
• M45: 30,437,183 km (0.09 R)
• M46: 30,747,748 km (0.053 R)
• M47: 30,825,539 km (0.076 R)
• M48: 30,981,420 km (0.095 R)
• M49: 31,215,690 km (0.059 R)
• M50: 31,528,948 km (0.118 R)
• M51: 31,843,253 km (0.119 R)
• M52: 32,395,868 km (0.075 R)
• M53: 32,951,474 km (0.101 R)
• M54: 33,350,302 km (0.094 R)
• M55: 33,911,444 km (0.074 R)
• M56: 34,556,510 km (0.048 R)
• M57: 34,880,539 km (0.099 R)
• M58: 36,515,943 km (0.068 R)
• M59: 36,763,378 km (0.12 R)
• M60: 37,426,096 km (0.118 R)
• M61: 42,087,117 km (0.1 R)
• M62: 42,606,521 km (0.064 R)
• M63: 42,866,971 km (0.113 R)
• M64: 43,040,953 km (0.116 R)
• M65: 43,651,761 km (0.035 R)
• M66: 43,914,455 km (0.068 R)
• M67: 44,177,598 km (0.113 R)
• M68: 44,529,302 km (0.11 R)
• M69: 46,034,257 km (0.03 R)
• M70: 47,017,115 km (0.05 R)
• M71: 47,376,150 km (0.095 R)
• M72: 48,277,776 km (0.079 R)
• M73: 50,006,529 km (0.103 R)
• M74: 50,924,462 km (0.116 R)
• M75: 51,293,220 km (0.109 R)
• M76: 52,870,281 km (0.065 R)
• M77: 53,337,176 km (0.028 R)
• M78: 56,929,769 km (0.103 R)
• M79: 57,025,362 km (0.08 R)
• M80: 57,504,225 km (0.094 R)
• M81: 59,432,691 km (0.065 R)
• M82: 60,502,316 km (0.08 R)
• M83: 61,382,250 km (0.078 R)
• M84: 61,480,237 km (0.057 R)
• M85: 61,971,068 km (0.099 R)
• M86: 64,644,531 km (0.1 R)
• M87: 64,844,095 km (0.106 R)
• M88: 65,343,752 km (0.068 R)
• M89: 65,644,144 km (0.047 R)
• M90: 66,850,501 km (0.071 R)
• M91: 66,951,480 km (0.105 R)
• M92: 67,254,266 km (0.109 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 210 - 17,367 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit