🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.54 AU - 0.72 AU

Year: 190 Days

Day: 23.1 Hours

Environment

Temp: 174 °C

Axial Tilt: 16.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.72

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.59 AU - 0.83 AU

Year: 228 Days

Day: 39.7 Hours

Environment

Temp: 146 °C

Axial Tilt: 33.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.91 AU - 1.13 AU

Year: 392 Days

Day: 32 Hours

Environment

Temp: 6 °C

Axial Tilt: 26 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.45 AU - 2.41 AU

Year: 1021 Days

Day: 32.5 Hours

Environment

Temp: -69 °C

Axial Tilt: 12.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.47 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 108.2

Radius: 9.1

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 4.55 AU - 5.46 AU

Year: 4257 Days

Day: 7.9 Hours

Environment

Temp: -150 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 82,710,593 km

• M1: 145,409 km (0.115 R)
• M2: 208,390 km (0.061 R)
• M3: 285,732 km (0.043 R)
• M4: 480,209 km (0.083 R)
• M5: 615,296 km (0.051 R)
• M6: 673,190 km (0.071 R)
• M7: 740,809 km (0.079 R)
• M8: 851,062 km (0.11 R)
• M9: 958,474 km (0.056 R)
• M10: 1,070,672 km (0.085 R)
• M11: 1,280,408 km (0.109 R)
• M12: 1,553,574 km (0.083 R)
• M13: 2,042,161 km (0.03 R)
• M14: 2,131,919 km (0.083 R)
• M15: 2,504,119 km (0.089 R)
• M16: 2,697,848 km (0.079 R)
• M17: 2,871,531 km (0.069 R)
• M18: 2,959,794 km (0.083 R)
• M19: 3,074,535 km (0.096 R)
• M20: 3,282,327 km (0.067 R)
• M21: 3,374,629 km (0.029 R)
• M22: 3,508,220 km (0.108 R)
• M23: 3,919,165 km (0.077 R)
• M24: 4,059,637 km (0.098 R)
• M25: 4,187,394 km (0.096 R)
• M26: 4,578,892 km (0.064 R)
• M27: 5,073,462 km (0.082 R)
• M28: 5,334,959 km (0.077 R)
• M29: 6,064,398 km (0.116 R)
• M30: 6,557,024 km (0.094 R)
• M31: 6,791,295 km (0.056 R)
• M32: 7,130,882 km (0.104 R)
• M33: 8,003,785 km (0.101 R)
• M34: 8,110,897 km (0.054 R)
• M35: 8,708,092 km (0.1 R)
• M36: 8,818,196 km (0.056 R)
• M37: 9,300,649 km (0.113 R)
• M38: 9,526,243 km (0.09 R)
• M39: 9,849,075 km (0.103 R)
• M40: 10,349,480 km (0.106 R)
• M41: 11,016,537 km (0.066 R)
• M42: 11,115,870 km (0.026 R)
• M43: 11,920,706 km (0.069 R)
• M44: 12,723,598 km (0.107 R)
• M45: 13,099,986 km (0.059 R)
• M46: 13,458,872 km (0.103 R)
• M47: 13,671,450 km (0.1 R)
• M48: 13,799,506 km (0.113 R)
• M49: 14,186,216 km (0.06 R)
• M50: 14,598,359 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.7

Radius: 11.1

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 5.24 AU - 8.1 AU

Year: 6560 Days

Day: 12.9 Hours

Environment

Temp: -169 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 82,710,593 km

• M1: 206,894 km (0.088 R)
• M2: 341,981 km (0.074 R)
• M3: 484,847 km (0.051 R)
• M4: 768,335 km (0.074 R)
• M5: 966,552 km (0.108 R)
• M6: 1,552,676 km (0.047 R)
• M7: 1,660,088 km (0.07 R)
• M8: 1,770,192 km (0.061 R)
• M9: 1,882,689 km (0.055 R)
• M10: 2,115,164 km (0.114 R)
• M11: 2,316,074 km (0.09 R)
• M12: 2,544,510 km (0.062 R)
• M13: 2,629,482 km (0.096 R)
• M14: 2,890,081 km (0.103 R)
• M15: 2,978,793 km (0.109 R)
• M16: 3,227,724 km (0.071 R)
• M17: 3,554,445 km (0.119 R)
• M18: 3,916,472 km (0.106 R)
• M19: 4,417,625 km (0.112 R)
• M20: 4,806,879 km (0.071 R)
• M21: 5,099,492 km (0.111 R)
• M22: 5,563,096 km (0.106 R)
• M23: 6,068,886 km (0.06 R)
• M24: 6,356,264 km (0.093 R)
• M25: 6,855,173 km (0.094 R)
• M26: 6,974,402 km (0.113 R)
• M27: 7,427,684 km (0.107 R)
• M28: 7,673,473 km (0.096 R)
• M29: 7,953,072 km (0.104 R)
• M30: 8,426,698 km (0.091 R)
• M31: 8,876,988 km (0.105 R)
• M32: 9,072,363 km (0.111 R)
• M33: 9,434,240 km (0.116 R)
• M34: 9,633,804 km (0.102 R)
• M35: 10,036,820 km (0.099 R)
• M36: 10,755,489 km (0.112 R)
• M37: 10,998,884 km (0.092 R)
• M38: 11,103,603 km (0.066 R)
• M39: 11,208,770 km (0.059 R)
• M40: 11,314,237 km (0.044 R)
• M41: 11,632,730 km (0.098 R)
• M42: 12,788,972 km (0.092 R)
• M43: 13,231,932 km (0.102 R)
• M44: 13,455,281 km (0.057 R)
• M45: 13,530,080 km (0.086 R)
• M46: 13,642,428 km (0.113 R)
• M47: 14,133,109 km (0.1 R)
• M48: 14,209,105 km (0.063 R)
• M49: 14,285,101 km (0.11 R)
• M50: 14,706,368 km (0.088 R)
• M51: 14,860,454 km (0.061 R)
• M52: 16,272,060 km (0.105 R)
• M53: 16,591,451 km (0.095 R)
• M54: 17,034,111 km (0.097 R)
• M55: 17,115,044 km (0.093 R)
• M56: 18,969,160 km (0.094 R)
• M57: 19,094,971 km (0.073 R)
• M58: 19,432,015 km (0.078 R)
• M59: 19,601,211 km (0.089 R)
• M60: 19,898,611 km (0.114 R)
• M61: 20,497,751 km (0.054 R)
• M62: 22,242,361 km (0.113 R)
• M63: 22,596,908 km (0.082 R)
• M64: 22,953,400 km (0.116 R)
• M65: 23,222,077 km (0.054 R)
• M66: 24,170,378 km (0.049 R)
• M67: 24,261,334 km (0.111 R)
• M68: 24,901,314 km (0.114 R)
• M69: 27,374,166 km (0.063 R)
• M70: 28,712,020 km (0.118 R)
• M71: 28,953,172 km (0.116 R)
• M72: 29,340,331 km (0.049 R)
• M73: 29,437,420 km (0.098 R)
• M74: 29,583,278 km (0.028 R)
• M75: 30,709,002 km (0.054 R)
• M76: 32,298,629 km (0.07 R)
• M77: 32,599,770 km (0.067 R)
• M78: 33,356,436 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 900.4

Radius: 10.2

Gravity: 8.65 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 8.06 AU - 11.56 AU

Year: 11700 Days

Day: 5.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 93.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 82,710,593 km

• M1: 279,150 km (0.047 R)
• M2: 540,946 km (0.114 R)
• M3: 682,166 km (0.069 R)
• M4: 796,908 km (0.103 R)
• M5: 877,242 km (0.063 R)
• M6: 960,568 km (0.047 R)
• M7: 2,134,462 km (0.11 R)
• M8: 2,220,332 km (0.062 R)
• M9: 3,012,452 km (0.101 R)
• M10: 3,305,814 km (0.044 R)
• M11: 3,439,105 km (0.086 R)
• M12: 3,815,194 km (0.062 R)
• M13: 4,495,715 km (0.068 R)
• M14: 4,793,565 km (0.078 R)
• M15: 5,252,381 km (0.051 R)
• M16: 5,447,756 km (0.101 R)
• M17: 5,966,861 km (0.083 R)
• M18: 6,839,016 km (0.111 R)
• M19: 6,966,773 km (0.111 R)
• M20: 9,974,139 km (0.086 R)
• M21: 10,509,849 km (0.092 R)
• M22: 10,955,202 km (0.086 R)
• M23: 11,054,983 km (0.114 R)
• M24: 11,305,859 km (0.111 R)
• M25: 13,113,749 km (0.094 R)
• M26: 14,078,207 km (0.093 R)
• M27: 14,404,779 km (0.061 R)
• M28: 14,623,790 km (0.114 R)
• M29: 15,455,255 km (0.087 R)
• M30: 15,792,150 km (0.089 R)
• M31: 15,905,096 km (0.11 R)
• M32: 16,074,740 km (0.119 R)
• M33: 16,473,269 km (0.119 R)
• M34: 18,158,489 km (0.066 R)
• M35: 19,352,280 km (0.064 R)
• M36: 20,633,137 km (0.107 R)
• M37: 21,439,619 km (0.119 R)
• M38: 21,752,578 km (0.105 R)
• M39: 21,878,240 km (0.045 R)
• M40: 22,573,421 km (0.082 R)
• M41: 22,700,579 km (0.088 R)
• M42: 23,211,606 km (0.07 R)
• M43: 25,293,709 km (0.104 R)
• M44: 25,359,831 km (0.106 R)
• M45: 26,558,110 km (0.092 R)
• M46: 27,029,044 km (0.101 R)
• M47: 27,638,655 km (0.1 R)
• M48: 29,009,570 km (0.105 R)
• M49: 29,563,980 km (0.055 R)
• M50: 30,052,118 km (0.066 R)
• M51: 30,262,153 km (0.106 R)
• M52: 32,676,065 km (0.061 R)
• M53: 34,124,770 km (0.093 R)
• M54: 34,930,355 km (0.031 R)
• M55: 35,077,559 km (0.051 R)
• M56: 36,411,224 km (0.066 R)
• M57: 36,709,821 km (0.113 R)
• M58: 38,291,071 km (0.088 R)
• M59: 38,823,041 km (0.099 R)
• M60: 39,587,337 km (0.105 R)
• M61: 40,975,306 km (0.092 R)
• M62: 41,831,454 km (0.094 R)
• M63: 42,772,126 km (0.104 R)
• M64: 42,850,964 km (0.114 R)
• M65: 43,324,142 km (0.119 R)
• M66: 43,640,541 km (0.087 R)
• M67: 44,834,183 km (0.11 R)
• M68: 46,199,862 km (0.078 R)
• M69: 46,523,143 km (0.101 R)
• M70: 47,742,216 km (0.104 R)
• M71: 48,232,897 km (0.105 R)
• M72: 49,384,052 km (0.093 R)
• M73: 49,631,936 km (0.115 R)
• M74: 50,211,927 km (0.069 R)
• M75: 50,544,333 km (0.099 R)
• M76: 50,627,659 km (0.111 R)
• M77: 51,295,015 km (0.052 R)
• M78: 52,638,554 km (0.112 R)
• M79: 53,908,640 km (0.104 R)
• M80: 54,419,517 km (0.084 R)
• M81: 54,590,058 km (0.112 R)
• M82: 54,931,889 km (0.072 R)
• M83: 55,703,665 km (0.099 R)
• M84: 57,084,303 km (0.108 R)
• M85: 57,779,036 km (0.097 R)
• M86: 57,953,018 km (0.037 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 355

Radius: 7.3

Gravity: 6.66 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 13.37 AU - 13.39 AU

Year: 18637 Days

Day: 20.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 82,710,593 km

• M1: 320,887 km (0.096 R)
• M2: 505,192 km (0.107 R)
• M3: 781,050 km (0.118 R)
• M4: 1,310,477 km (0.114 R)
• M5: 1,432,848 km (0.106 R)
• M6: 1,715,289 km (0.074 R)
• M7: 2,214,796 km (0.094 R)
• M8: 2,302,162 km (0.11 R)
• M9: 2,510,851 km (0.112 R)
• M10: 2,882,751 km (0.05 R)
• M11: 3,206,032 km (0.086 R)
• M12: 3,405,446 km (0.077 R)
• M13: 3,472,915 km (0.045 R)
• M14: 3,677,864 km (0.11 R)
• M15: 3,922,007 km (0.118 R)
• M16: 4,573,805 km (0.077 R)
• M17: 4,685,705 km (0.058 R)
• M18: 4,836,350 km (0.076 R)
• M19: 5,026,937 km (0.117 R)
• M20: 5,415,593 km (0.118 R)
• M21: 5,733,338 km (0.027 R)
• M22: 6,304,204 km (0.117 R)
• M23: 7,021,526 km (0.092 R)
• M24: 7,107,544 km (0.114 R)
• M25: 8,809,071 km (0.113 R)
• M26: 8,901,971 km (0.074 R)
• M27: 9,182,616 km (0.059 R)
• M28: 9,276,863 km (0.069 R)
• M29: 9,324,136 km (0.055 R)
• M30: 9,513,826 km (0.041 R)
• M31: 9,704,863 km (0.028 R)
• M32: 9,752,734 km (0.057 R)
• M33: 9,993,736 km (0.118 R)
• M34: 10,090,676 km (0.101 R)
• M35: 10,383,289 km (0.099 R)
• M36: 10,678,745 km (0.085 R)
• M37: 11,734,607 km (0.107 R)
• M38: 11,785,769 km (0.111 R)
• M39: 12,665,853 km (0.103 R)
• M40: 12,718,213 km (0.112 R)
• M41: 13,890,013 km (0.088 R)
• M42: 13,944,018 km (0.056 R)
• M43: 14,052,476 km (0.066 R)
• M44: 14,161,084 km (0.12 R)
• M45: 16,107,203 km (0.078 R)
• M46: 16,563,775 km (0.069 R)
• M47: 17,024,537 km (0.091 R)
• M48: 17,899,834 km (0.11 R)
• M49: 18,789,642 km (0.086 R)
• M50: 19,572,488 km (0.109 R)
• M51: 19,633,075 km (0.108 R)
• M52: 19,937,357 km (0.115 R)
• M53: 21,169,894 km (0.043 R)
• M54: 22,426,815 km (0.095 R)
• M55: 22,553,973 km (0.117 R)
• M56: 23,643,345 km (0.115 R)
• M57: 24,357,376 km (0.109 R)
• M58: 26,273,425 km (0.075 R)
• M59: 26,541,505 km (0.06 R)
• M60: 26,675,844 km (0.112 R)
• M61: 27,622,948 km (0.099 R)
• M62: 28,374,677 km (0.066 R)
• M63: 28,787,567 km (0.118 R)
• M64: 29,271,815 km (0.074 R)
• M65: 29,828,469 km (0.079 R)
• M66: 30,670,107 km (0.106 R)
• M67: 32,233,255 km (0.111 R)
• M68: 32,520,184 km (0.11 R)
• M69: 33,604,020 km (0.091 R)
• M70: 33,822,134 km (0.1 R)
• M71: 33,894,988 km (0.07 R)
• M72: 35,658,448 km (0.065 R)
• M73: 35,955,250 km (0.11 R)
• M74: 38,663,121 km (0.071 R)
• M75: 38,891,856 km (0.059 R)
• M76: 39,887,729 km (0.097 R)
• M77: 41,670,038 km (0.094 R)
• M78: 41,982,698 km (0.071 R)
• M79: 43,636,652 km (0.078 R)
• M80: 46,440,415 km (0.082 R)
• M81: 47,252,133 km (0.11 R)
• M82: 47,659,787 km (0.073 R)
• M83: 50,129,798 km (0.063 R)
• M84: 50,545,530 km (0.108 R)
• M85: 50,878,984 km (0.069 R)
• M86: 52,135,756 km (0.06 R)
• M87: 53,148,384 km (0.117 R)
• M88: 53,572,344 km (0.031 R)
• M89: 54,167,743 km (0.108 R)
• M90: 54,338,135 km (0.098 R)
• M91: 56,225,462 km (0.112 R)
• M92: 56,398,098 km (0.067 R)
• M93: 56,484,416 km (0.099 R)
• M94: 57,437,504 km (0.103 R)
• M95: 57,524,420 km (0.064 R)
• M96: 57,959,750 km (0.111 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 555.3

Radius: 7.5

Gravity: 9.87 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 15.65 AU - 17.05 AU

Year: 25175 Days

Day: 18.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 82,710,593 km

• M1: 114,143 km (0.051 R)
• M2: 276,457 km (0.072 R)
• M3: 381,475 km (0.077 R)
• M4: 439,668 km (0.091 R)
• M5: 1,130,062 km (0.067 R)
• M6: 2,104,692 km (0.045 R)
• M7: 2,286,903 km (0.078 R)
• M8: 2,705,926 km (0.113 R)
• M9: 3,613,836 km (0.105 R)
• M10: 4,055,449 km (0.063 R)
• M11: 4,749,583 km (0.119 R)
• M12: 4,940,918 km (0.107 R)
• M13: 5,183,716 km (0.101 R)
• M14: 6,614,021 km (0.108 R)
• M15: 7,043,816 km (0.059 R)
• M16: 8,329,460 km (0.105 R)
• M17: 8,793,512 km (0.103 R)
• M18: 9,028,531 km (0.119 R)
• M19: 9,385,172 km (0.103 R)
• M20: 11,555,538 km (0.118 R)
• M21: 12,007,623 km (0.056 R)
• M22: 12,399,719 km (0.12 R)
• M23: 13,398,135 km (0.103 R)
• M24: 14,146,573 km (0.11 R)
• M25: 14,422,132 km (0.071 R)
• M26: 14,560,510 km (0.116 R)
• M27: 15,542,022 km (0.028 R)
• M28: 16,184,096 km (0.112 R)
• M29: 16,834,996 km (0.063 R)
• M30: 17,420,672 km (0.072 R)
• M31: 17,938,580 km (0.118 R)
• M32: 18,311,677 km (0.089 R)
• M33: 18,461,574 km (0.092 R)
• M34: 18,838,261 km (0.111 R)
• M35: 21,941,520 km (0.08 R)
• M36: 25,199,313 km (0.065 R)
• M37: 25,784,839 km (0.115 R)
• M38: 26,121,434 km (0.118 R)
• M39: 26,205,807 km (0.069 R)
• M40: 27,568,045 km (0.07 R)
• M41: 27,998,438 km (0.118 R)
• M42: 28,691,675 km (0.117 R)
• M43: 29,830,264 km (0.104 R)
• M44: 30,360,738 km (0.056 R)
• M45: 31,072,824 km (0.041 R)
• M46: 31,880,653 km (0.078 R)
• M47: 34,068,222 km (0.095 R)
• M48: 34,252,676 km (0.094 R)
• M49: 34,530,031 km (0.112 R)
• M50: 36,492,157 km (0.057 R)
• M51: 36,775,495 km (0.074 R)
• M52: 36,870,041 km (0.092 R)
• M53: 36,964,736 km (0.088 R)
• M54: 37,629,699 km (0.041 R)
• M55: 38,298,551 km (0.094 R)
• M56: 41,799,889 km (0.079 R)
• M57: 43,488,550 km (0.106 R)
• M58: 46,318,194 km (0.096 R)
• M59: 47,652,008 km (0.049 R)
• M60: 49,624,157 km (0.04 R)
• M61: 49,833,295 km (0.07 R)
• M62: 52,472,052 km (0.084 R)
• M63: 53,540,330 km (0.11 R)
• M64: 53,754,853 km (0.119 R)
• M65: 55,372,605 km (0.064 R)
• M66: 56,133,160 km (0.082 R)
• M67: 56,242,067 km (0.061 R)
• M68: 56,569,238 km (0.084 R)
• M69: 57,006,513 km (0.087 R)
• M70: 57,335,179 km (0.103 R)
• M71: 57,444,834 km (0.038 R)
• M72: 58,987,936 km (0.111 R)
• M73: 65,753,500 km (0.061 R)
• M74: 66,558,636 km (0.11 R)
• M75: 67,367,063 km (0.067 R)
• M76: 68,062,543 km (0.092 R)
• M77: 69,694,806 km (0.072 R)
• M78: 70,515,649 km (0.08 R)
• M79: 70,868,401 km (0.1 R)
• M80: 71,221,751 km (0.08 R)
• M81: 72,285,542 km (0.102 R)
• M82: 75,748,433 km (0.075 R)
• M83: 76,351,013 km (0.055 R)
• M84: 77,803,459 km (0.103 R)
• M85: 77,924,932 km (0.096 R)
• M86: 78,533,197 km (0.078 R)
• M87: 78,654,970 km (0.098 R)
• M88: 79,265,030 km (0.085 R)
• M89: 79,999,257 km (0.093 R)
• M90: 80,489,938 km (0.112 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 161 - 15,512 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit