🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.4

Radius: 12.7

Gravity: 5.61 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.72 AU - 0.96 AU

Year: 497 Days

Day: 10.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (48)

Outer Limit: 26,173,040 km

• M1: 161,117 km (0.08 R)
• M2: 295,007 km (0.116 R)
• M3: 443,258 km (0.085 R)
• M4: 529,876 km (0.065 R)
• M5: 666,758 km (0.094 R)
• M6: 765,792 km (0.079 R)
• M7: 846,126 km (0.069 R)
• M8: 954,883 km (0.102 R)
• M9: 1,305,840 km (0.067 R)
• M10: 1,386,922 km (0.038 R)
• M11: 1,786,199 km (0.091 R)
• M12: 2,036,476 km (0.081 R)
• M13: 2,159,146 km (0.036 R)
• M14: 2,249,354 km (0.1 R)
• M15: 2,390,574 km (0.088 R)
• M16: 2,520,275 km (0.054 R)
• M17: 2,608,239 km (0.039 R)
• M18: 2,704,580 km (0.034 R)
• M19: 2,870,484 km (0.029 R)
• M20: 2,962,337 km (0.076 R)
• M21: 3,117,919 km (0.053 R)
• M22: 3,300,129 km (0.079 R)
• M23: 3,420,855 km (0.101 R)
• M24: 3,551,453 km (0.079 R)
• M25: 3,666,943 km (0.074 R)
• M26: 3,792,306 km (0.101 R)
• M27: 3,927,542 km (0.058 R)
• M28: 4,030,017 km (0.098 R)
• M29: 4,142,066 km (0.066 R)
• M30: 4,263,839 km (0.117 R)
• M31: 4,386,958 km (0.085 R)
• M32: 4,502,298 km (0.093 R)
• M33: 4,582,781 km (0.051 R)
• M34: 4,681,815 km (0.083 R)
• M35: 4,827,224 km (0.094 R)
• M36: 5,001,805 km (0.11 R)
• M37: 5,094,555 km (0.114 R)
• M38: 5,197,180 km (0.084 R)
• M39: 5,281,702 km (0.057 R)
• M40: 5,395,098 km (0.11 R)
• M41: 5,663,027 km (0.078 R)
• M42: 5,837,608 km (0.066 R)
• M43: 6,053,328 km (0.101 R)
• M44: 6,162,235 km (0.099 R)
• M45: 6,241,971 km (0.068 R)
• M46: 6,462,628 km (0.108 R)
• M47: 6,726,818 km (0.111 R)
• M48: 6,860,409 km (0.101 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.7

Radius: 14.3

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.91 AU - 1.05 AU

Year: 626 Days

Day: 13.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 26,173,040 km

• M1: 180,565 km (0.109 R)
• M2: 364,121 km (0.068 R)
• M3: 568,023 km (0.083 R)
• M4: 829,071 km (0.093 R)
• M5: 944,561 km (0.112 R)
• M6: 1,089,222 km (0.116 R)
• M7: 1,193,342 km (0.094 R)
• M8: 1,321,248 km (0.1 R)
• M9: 1,433,297 km (0.111 R)
• M10: 1,580,950 km (0.117 R)
• M11: 1,706,164 km (0.028 R)
• M12: 1,857,856 km (0.087 R)
• M13: 2,055,325 km (0.107 R)
• M14: 2,144,785 km (0.118 R)
• M15: 2,253,842 km (0.085 R)
• M16: 2,346,293 km (0.087 R)
• M17: 2,573,682 km (0.073 R)
• M18: 2,755,593 km (0.042 R)
• M19: 2,908,183 km (0.106 R)
• M20: 3,016,192 km (0.097 R)
• M21: 3,222,338 km (0.096 R)
• M22: 3,419,059 km (0.114 R)
• M23: 3,590,798 km (0.094 R)
• M24: 3,707,035 km (0.114 R)
• M25: 3,831,800 km (0.098 R)
• M26: 3,928,290 km (0.084 R)
• M27: 4,033,159 km (0.12 R)
• M28: 4,123,665 km (0.091 R)
• M29: 4,222,549 km (0.062 R)
• M30: 4,353,148 km (0.088 R)
• M31: 4,477,315 km (0.072 R)
• M32: 4,594,899 km (0.115 R)
• M33: 4,817,051 km (0.106 R)
• M34: 4,961,713 km (0.115 R)
• M35: 5,148,860 km (0.07 R)
• M36: 5,255,523 km (0.08 R)
• M37: 5,429,655 km (0.105 R)
• M38: 5,521,657 km (0.118 R)
• M39: 5,775,076 km (0.101 R)
• M40: 5,869,024 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.5

Radius: 11.5

Gravity: 1.94 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.35 AU - 1.47 AU

Year: 1081 Days

Day: 14.2 Hours

Environment

Temp: -171 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 26,173,040 km

• M1: 143,764 km (0.118 R)
• M2: 231,727 km (0.09 R)
• M3: 317,147 km (0.117 R)
• M4: 390,151 km (0.096 R)
• M5: 467,045 km (0.05 R)
• M6: 563,685 km (0.117 R)
• M7: 711,338 km (0.093 R)
• M8: 790,625 km (0.114 R)
• M9: 959,072 km (0.101 R)
• M10: 1,140,085 km (0.077 R)
• M11: 1,234,930 km (0.088 R)
• M12: 1,314,068 km (0.107 R)
• M13: 1,407,866 km (0.071 R)
• M14: 1,523,355 km (0.049 R)
• M15: 1,729,950 km (0.047 R)
• M16: 1,896,452 km (0.093 R)
• M17: 1,988,904 km (0.086 R)
• M18: 2,090,331 km (0.032 R)
• M19: 2,253,094 km (0.066 R)
• M20: 2,397,156 km (0.097 R)
• M21: 2,489,907 km (0.107 R)
• M22: 2,623,199 km (0.098 R)
• M23: 2,710,713 km (0.102 R)
• M24: 2,848,044 km (0.11 R)
• M25: 3,004,374 km (0.098 R)
• M26: 3,104,605 km (0.064 R)
• M27: 3,231,464 km (0.115 R)
• M28: 3,377,322 km (0.067 R)
• M29: 3,578,231 km (0.093 R)
• M30: 3,765,229 km (0.053 R)
• M31: 4,084,022 km (0.101 R)
• M32: 4,158,073 km (0.057 R)
• M33: 4,270,122 km (0.082 R)
• M34: 4,392,642 km (0.103 R)
• M35: 4,487,787 km (0.055 R)
• M36: 5,013,025 km (0.092 R)
• M37: 5,132,553 km (0.101 R)
• M38: 5,263,003 km (0.059 R)
• M39: 5,568,332 km (0.105 R)
• M40: 5,702,372 km (0.046 R)
• M41: 5,848,080 km (0.098 R)
• M42: 5,973,892 km (0.117 R)
• M43: 6,153,708 km (0.099 R)
• M44: 6,292,535 km (0.114 R)
• M45: 6,583,952 km (0.109 R)
• M46: 6,704,079 km (0.089 R)
• M47: 6,813,884 km (0.077 R)
• M48: 7,012,999 km (0.113 R)
• M49: 7,135,669 km (0.089 R)
• M50: 7,225,278 km (0.116 R)
• M51: 7,473,760 km (0.107 R)
• M52: 7,633,381 km (0.102 R)
• M53: 7,805,568 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 310.3

Radius: 11.6

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 1.84 AU - 2.18 AU

Year: 1840 Days

Day: 14.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 26,173,040 km

• M1: 147,204 km (0.081 R)
• M2: 283,787 km (0.107 R)
• M3: 527,482 km (0.113 R)
• M4: 721,361 km (0.056 R)
• M5: 918,531 km (0.057 R)
• M6: 998,117 km (0.104 R)
• M7: 1,110,914 km (0.074 R)
• M8: 1,228,199 km (0.103 R)
• M9: 1,333,515 km (0.069 R)
• M10: 1,416,692 km (0.113 R)
• M11: 1,570,927 km (0.117 R)
• M12: 1,740,122 km (0.075 R)
• M13: 1,859,352 km (0.085 R)
• M14: 1,934,151 km (0.102 R)
• M15: 2,243,968 km (0.088 R)
• M16: 2,344,199 km (0.099 R)
• M17: 2,590,736 km (0.095 R)
• M18: 2,696,053 km (0.097 R)
• M19: 2,835,029 km (0.081 R)
• M20: 2,987,619 km (0.108 R)
• M21: 3,142,902 km (0.065 R)
• M22: 3,743,088 km (0.118 R)
• M23: 3,971,375 km (0.098 R)
• M24: 4,056,645 km (0.079 R)
• M25: 4,228,982 km (0.112 R)
• M26: 4,316,198 km (0.077 R)
• M27: 4,429,144 km (0.025 R)
• M28: 4,568,420 km (0.032 R)
• M29: 4,683,610 km (0.056 R)
• M30: 4,812,713 km (0.118 R)
• M31: 5,193,739 km (0.098 R)
• M32: 5,381,185 km (0.096 R)
• M33: 5,707,907 km (0.089 R)
• M34: 6,139,497 km (0.087 R)
• M35: 6,323,652 km (0.098 R)
• M36: 6,452,306 km (0.053 R)
• M37: 6,784,862 km (0.053 R)
• M38: 7,019,581 km (0.099 R)
• M39: 7,436,809 km (0.058 R)
• M40: 7,724,486 km (0.12 R)
• M41: 7,800,931 km (0.083 R)
• M42: 8,031,461 km (0.08 R)
• M43: 8,720,658 km (0.049 R)
• M44: 8,895,987 km (0.109 R)
• M45: 9,120,683 km (0.089 R)
• M46: 9,396,242 km (0.112 R)
• M47: 9,872,711 km (0.09 R)
• M48: 10,155,601 km (0.04 R)
• M49: 10,272,886 km (0.118 R)
• M50: 10,424,279 km (0.098 R)
• M51: 10,661,391 km (0.101 R)
• M52: 10,780,621 km (0.116 R)
• M53: 10,900,299 km (0.078 R)
• M54: 11,020,426 km (0.111 R)
• M55: 11,175,559 km (0.061 R)
• M56: 11,331,291 km (0.104 R)
• M57: 11,557,632 km (0.077 R)
• M58: 11,680,153 km (0.118 R)
• M59: 11,767,967 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683.8

Radius: 13.5

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 2.86 AU - 4.34 AU

Year: 4410 Days

Day: 7.5 Hours

Environment

Temp: -201 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 26,173,040 km

• M1: 180,714 km (0.109 R)
• M2: 476,320 km (0.112 R)
• M3: 734,526 km (0.034 R)
• M4: 1,202,019 km (0.029 R)
• M5: 1,314,666 km (0.105 R)
• M6: 1,475,933 km (0.081 R)
• M7: 1,644,081 km (0.11 R)
• M8: 1,867,729 km (0.041 R)
• M9: 2,452,657 km (0.087 R)
• M10: 2,654,016 km (0.098 R)
• M11: 2,975,950 km (0.112 R)
• M12: 3,131,981 km (0.109 R)
• M13: 3,330,797 km (0.073 R)
• M14: 4,124,712 km (0.094 R)
• M15: 4,476,267 km (0.103 R)
• M16: 4,678,524 km (0.105 R)
• M17: 4,814,957 km (0.111 R)
• M18: 5,138,537 km (0.026 R)
• M19: 5,326,582 km (0.107 R)
• M20: 5,517,169 km (0.099 R)
• M21: 5,904,927 km (0.086 R)
• M22: 6,052,580 km (0.082 R)
• M23: 7,121,008 km (0.052 R)
• M24: 7,304,864 km (0.082 R)
• M25: 7,730,919 km (0.102 R)
• M26: 7,946,938 km (0.073 R)
• M27: 8,495,962 km (0.112 R)
• M28: 9,142,524 km (0.06 R)
• M29: 9,313,814 km (0.069 R)
• M30: 9,486,151 km (0.105 R)
• M31: 9,659,684 km (0.11 R)
• M32: 10,812,635 km (0.118 R)
• M33: 10,963,729 km (0.113 R)
• M34: 11,328,897 km (0.055 R)
• M35: 12,102,767 km (0.106 R)
• M36: 12,511,917 km (0.075 R)
• M37: 12,670,491 km (0.116 R)
• M38: 12,797,948 km (0.071 R)
• M39: 13,150,401 km (0.119 R)
• M40: 13,473,532 km (0.096 R)
• M41: 13,603,533 km (0.114 R)
• M42: 13,701,370 km (0.088 R)
• M43: 13,963,316 km (0.077 R)
• M44: 14,226,907 km (0.11 R)
• M45: 14,792,537 km (0.032 R)
• M46: 14,893,216 km (0.099 R)
• M47: 15,808,755 km (0.115 R)
• M48: 16,707,689 km (0.094 R)
• M49: 16,952,431 km (0.117 R)
• M50: 17,057,748 km (0.101 R)
• M51: 17,233,824 km (0.05 R)
• M52: 17,375,045 km (0.081 R)
• M53: 17,765,346 km (0.075 R)
• M54: 18,015,324 km (0.076 R)
• M55: 18,194,542 km (0.092 R)
• M56: 18,302,402 km (0.098 R)
• M57: 18,590,976 km (0.11 R)
• M58: 18,953,901 km (0.113 R)
• M59: 19,355,870 km (0.116 R)
• M60: 19,576,228 km (0.115 R)
• M61: 19,834,434 km (0.089 R)
• M62: 20,354,286 km (0.087 R)
• M63: 20,765,830 km (0.106 R)
• M64: 21,864,028 km (0.105 R)
• M65: 23,097,762 km (0.08 R)
• M66: 24,354,085 km (0.114 R)
• M67: 24,791,060 km (0.105 R)
• M68: 25,190,486 km (0.095 R)
• M69: 25,672,790 km (0.038 R)
• M70: 26,077,003 km (0.094 R)
• M71: 26,605,533 km (0.04 R)
• M72: 26,809,883 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 929.3

Radius: 12.9

Gravity: 5.58 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 3.12 AU - 4.68 AU

Year: 4973 Days

Day: 10.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 26,173,040 km

• M1: 204,051 km (0.119 R)
• M2: 291,417 km (0.104 R)
• M3: 553,512 km (0.036 R)
• M4: 635,492 km (0.105 R)
• M5: 1,010,982 km (0.114 R)
• M6: 1,115,701 km (0.105 R)
• M7: 1,208,601 km (0.098 R)
• M8: 1,572,872 km (0.061 R)
• M9: 1,804,599 km (0.084 R)
• M10: 1,990,549 km (0.081 R)
• M11: 2,422,438 km (0.115 R)
• M12: 2,607,790 km (0.071 R)
• M13: 3,534,250 km (0.089 R)
• M14: 3,792,755 km (0.052 R)
• M15: 3,984,689 km (0.102 R)
• M16: 4,155,380 km (0.107 R)
• M17: 4,529,375 km (0.081 R)
• M18: 4,759,157 km (0.097 R)
• M19: 4,888,410 km (0.053 R)
• M20: 5,716,135 km (0.111 R)
• M21: 6,644,988 km (0.044 R)
• M22: 6,760,777 km (0.092 R)
• M23: 7,023,770 km (0.066 R)
• M24: 7,141,802 km (0.063 R)
• M25: 7,439,652 km (0.081 R)
• M26: 7,590,147 km (0.106 R)
• M27: 7,772,058 km (0.069 R)
• M28: 7,863,612 km (0.039 R)
• M29: 8,233,268 km (0.114 R)
• M30: 8,451,681 km (0.096 R)
• M31: 8,703,604 km (0.11 R)
• M32: 9,604,632 km (0.098 R)
• M33: 9,801,652 km (0.113 R)
• M34: 10,199,583 km (0.113 R)
• M35: 10,366,983 km (0.105 R)
• M36: 10,467,961 km (0.049 R)
• M37: 10,636,708 km (0.071 R)
• M38: 10,874,718 km (0.115 R)
• M39: 11,494,801 km (0.044 R)
• M40: 12,769,225 km (0.061 R)
• M41: 13,276,811 km (0.068 R)
• M42: 13,496,570 km (0.035 R)
• M43: 14,088,080 km (0.115 R)
• M44: 14,237,229 km (0.061 R)
• M45: 15,029,350 km (0.104 R)
• M46: 15,220,087 km (0.109 R)
• M47: 15,565,359 km (0.098 R)
• M48: 15,680,998 km (0.108 R)
• M49: 15,990,965 km (0.077 R)
• M50: 16,302,877 km (0.073 R)
• M51: 17,210,936 km (0.12 R)
• M52: 17,731,387 km (0.092 R)
• M53: 17,932,895 km (0.08 R)
• M54: 18,054,219 km (0.092 R)
• M55: 18,542,207 km (0.118 R)
• M56: 19,117,112 km (0.083 R)
• M57: 19,697,851 km (0.118 R)
• M58: 19,823,064 km (0.111 R)
• M59: 20,495,207 km (0.094 R)
• M60: 20,579,730 km (0.074 R)
• M61: 20,749,225 km (0.086 R)
• M62: 21,345,971 km (0.071 R)
• M63: 21,560,494 km (0.101 R)
• M64: 22,469,151 km (0.107 R)
• M65: 22,643,732 km (0.078 R)
• M66: 23,346,244 km (0.085 R)
• M67: 23,700,192 km (0.083 R)
• M68: 23,877,915 km (0.096 R)
• M69: 24,100,516 km (0.107 R)
• M70: 26,503,357 km (0.091 R)
• M71: 27,011,541 km (0.08 R)
• M72: 27,569,691 km (0.119 R)
• M73: 28,225,528 km (0.113 R)
• M74: 28,319,775 km (0.073 R)
• M75: 29,409,745 km (0.076 R)
• M76: 29,839,988 km (0.111 R)
• M77: 29,935,880 km (0.079 R)
• M78: 30,368,667 km (0.092 R)
• M79: 30,609,968 km (0.052 R)
• M80: 31,094,516 km (0.069 R)
• M81: 31,386,531 km (0.116 R)
• M82: 31,728,362 km (0.09 R)
• M83: 32,267,962 km (0.12 R)
• M84: 32,810,703 km (0.042 R)
• M85: 33,107,954 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 150.7

Radius: 11.2

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 5.03 AU - 6.21 AU

Year: 8602 Days

Day: 14.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 26,173,040 km

• M1: 173,534 km (0.047 R)
• M2: 261,198 km (0.112 R)
• M3: 355,445 km (0.038 R)
• M4: 842,236 km (0.096 R)
• M5: 1,154,596 km (0.115 R)
• M6: 1,345,483 km (0.066 R)
• M7: 2,077,914 km (0.093 R)
• M8: 2,244,566 km (0.117 R)
• M9: 2,450,413 km (0.084 R)
• M10: 2,573,383 km (0.063 R)
• M11: 2,662,543 km (0.042 R)
• M12: 2,844,005 km (0.038 R)
• M13: 3,181,049 km (0.079 R)
• M14: 3,751,167 km (0.102 R)
• M15: 3,955,218 km (0.099 R)
• M16: 4,037,946 km (0.074 R)
• M17: 4,121,122 km (0.067 R)
• M18: 4,247,084 km (0.03 R)
• M19: 4,632,747 km (0.095 R)
• M20: 4,896,189 km (0.061 R)
• M21: 5,096,949 km (0.057 R)
• M22: 5,927,367 km (0.095 R)
• M23: 6,045,998 km (0.1 R)
• M24: 6,725,322 km (0.057 R)
• M25: 7,074,184 km (0.056 R)
• M26: 7,174,863 km (0.094 R)
• M27: 7,505,624 km (0.113 R)
• M28: 7,582,667 km (0.103 R)
• M29: 7,919,562 km (0.096 R)
• M30: 8,076,789 km (0.116 R)
• M31: 8,208,585 km (0.095 R)
• M32: 8,447,642 km (0.108 R)
• M33: 8,851,108 km (0.098 R)
• M34: 9,205,954 km (0.112 R)
• M35: 9,509,787 km (0.062 R)
• M36: 10,527,352 km (0.086 R)
• M37: 11,313,189 km (0.094 R)
• M38: 11,668,484 km (0.109 R)
• M39: 11,847,553 km (0.086 R)
• M40: 12,117,876 km (0.1 R)
• M41: 12,208,383 km (0.064 R)
• M42: 12,359,926 km (0.11 R)
• M43: 13,157,432 km (0.061 R)
• M44: 13,281,598 km (0.07 R)
• M45: 13,750,737 km (0.063 R)
• M46: 14,416,747 km (0.105 R)
• M47: 14,512,639 km (0.113 R)
• M48: 14,737,485 km (0.079 R)
• M49: 15,945,039 km (0.091 R)
• M50: 17,014,963 km (0.072 R)
• M51: 17,150,199 km (0.113 R)
• M52: 17,456,127 km (0.092 R)
• M53: 17,695,334 km (0.047 R)
• M54: 18,977,537 km (0.083 R)
• M55: 19,117,860 km (0.082 R)
• M56: 19,753,950 km (0.083 R)
• M57: 21,338,042 km (0.064 R)
• M58: 22,664,377 km (0.094 R)
• M59: 23,299,868 km (0.118 R)
• M60: 23,563,310 km (0.061 R)
• M61: 24,017,041 km (0.086 R)
• M62: 24,435,615 km (0.081 R)
• M63: 24,512,060 km (0.09 R)
• M64: 25,280,095 km (0.117 R)
• M65: 25,473,376 km (0.067 R)
• M66: 25,550,718 km (0.073 R)
• M67: 26,094,955 km (0.026 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 258 - 15,190 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit