🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 2.11 AU - 3.03 AU

Year: 1552 Days

Day: 14.1 Hours

Environment

Temp: -96 °C

Axial Tilt: 35.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 91,923,523 km

• M1: 466,895 km (0.064 R)

Planet 2 - Terrestrial

Semi-Major Axis: 4.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.35 AU - 4.73 AU

Year: 3059 Days

Day: 27.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 7.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 5.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 599.3

Radius: 8.5

Gravity: 8.29 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 4.05 AU - 6.73 AU

Year: 4714 Days

Day: 8.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (83)

Outer Limit: 91,923,523 km

• M1: 118,631 km (0.12 R)
• M2: 208,539 km (0.104 R)
• M3: 360,980 km (0.086 R)
• M4: 452,833 km (0.04 R)
• M5: 651,349 km (0.109 R)
• M6: 827,875 km (0.103 R)
• M7: 928,554 km (0.091 R)
• M8: 1,060,350 km (0.105 R)
• M9: 1,128,716 km (0.067 R)
• M10: 1,554,771 km (0.04 R)
• M11: 1,680,732 km (0.084 R)
• M12: 1,810,134 km (0.11 R)
• M13: 1,876,107 km (0.071 R)
• M14: 1,993,541 km (0.116 R)
• M15: 2,078,962 km (0.087 R)
• M16: 2,148,225 km (0.093 R)
• M17: 2,414,809 km (0.077 R)
• M18: 2,543,014 km (0.051 R)
• M19: 2,654,614 km (0.085 R)
• M20: 2,921,347 km (0.052 R)
• M21: 3,317,632 km (0.045 R)
• M22: 3,501,488 km (0.041 R)
• M23: 3,794,251 km (0.069 R)
• M24: 4,493,022 km (0.117 R)
• M25: 4,996,419 km (0.11 R)
• M26: 6,180,786 km (0.09 R)
• M27: 6,509,153 km (0.102 R)
• M28: 6,585,747 km (0.09 R)
• M29: 7,235,600 km (0.086 R)
• M30: 7,315,037 km (0.106 R)
• M31: 7,987,629 km (0.092 R)
• M32: 8,124,511 km (0.114 R)
• M33: 9,133,249 km (0.05 R)
• M34: 9,247,692 km (0.049 R)
• M35: 9,305,137 km (0.025 R)
• M36: 9,420,477 km (0.109 R)
• M37: 9,478,222 km (0.09 R)
• M38: 9,594,160 km (0.059 R)
• M39: 10,270,043 km (0.026 R)
• M40: 10,568,641 km (0.045 R)
• M41: 10,749,205 km (0.038 R)
• M42: 12,324,920 km (0.12 R)
• M43: 12,515,059 km (0.107 R)
• M44: 12,674,231 km (0.055 R)
• M45: 12,834,001 km (0.106 R)
• M46: 13,155,637 km (0.082 R)
• M47: 13,220,413 km (0.108 R)
• M48: 14,468,807 km (0.043 R)
• M49: 14,736,437 km (0.079 R)
• M50: 14,837,266 km (0.043 R)
• M51: 15,073,332 km (0.04 R)
• M52: 15,583,461 km (0.095 R)
• M53: 16,133,682 km (0.06 R)
• M54: 16,237,502 km (0.119 R)
• M55: 16,550,611 km (0.108 R)
• M56: 16,970,981 km (0.061 R)
• M57: 17,466,000 km (0.073 R)
• M58: 17,572,663 km (0.047 R)
• M59: 18,253,483 km (0.11 R)
• M60: 18,906,328 km (0.074 R)
• M61: 18,979,332 km (0.07 R)
• M62: 19,714,606 km (0.081 R)
• M63: 21,174,980 km (0.117 R)
• M64: 21,516,961 km (0.079 R)
• M65: 21,975,778 km (0.105 R)
• M66: 22,129,415 km (0.097 R)
• M67: 22,283,500 km (0.077 R)
• M68: 22,747,703 km (0.117 R)
• M69: 23,136,956 km (0.096 R)
• M70: 23,922,046 km (0.069 R)
• M71: 24,596,134 km (0.089 R)
• M72: 24,835,640 km (0.118 R)
• M73: 25,075,894 km (0.098 R)
• M74: 25,196,321 km (0.056 R)
• M75: 25,760,753 km (0.116 R)
• M76: 26,003,850 km (0.097 R)
• M77: 26,125,772 km (0.064 R)
• M78: 26,492,586 km (0.107 R)
• M79: 26,574,267 km (0.099 R)
• M80: 26,778,916 km (0.092 R)
• M81: 27,190,011 km (0.119 R)
• M82: 27,354,868 km (0.115 R)
• M83: 27,561,613 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.1

Radius: 14.4

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 5.62 AU - 6.96 AU

Year: 5943 Days

Day: 8 Hours

Environment

Temp: -157 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 91,923,523 km

• M1: 233,373 km (0.119 R)
• M2: 588,069 km (0.043 R)
• M3: 785,389 km (0.11 R)
• M4: 885,919 km (0.095 R)
• M5: 1,022,501 km (0.11 R)
• M6: 1,166,863 km (0.1 R)
• M7: 1,495,680 km (0.045 R)
• M8: 1,854,415 km (0.091 R)
• M9: 2,788,804 km (0.104 R)
• M10: 2,926,583 km (0.085 R)
• M11: 3,649,590 km (0.083 R)
• M12: 3,800,833 km (0.057 R)
• M13: 4,031,812 km (0.113 R)
• M14: 4,267,279 km (0.056 R)
• M15: 4,670,146 km (0.107 R)
• M16: 4,862,380 km (0.086 R)
• M17: 5,001,356 km (0.067 R)
• M18: 5,368,918 km (0.099 R)
• M19: 6,402,190 km (0.104 R)
• M20: 6,493,744 km (0.113 R)
• M21: 7,496,200 km (0.103 R)
• M22: 8,081,427 km (0.12 R)
• M23: 9,123,825 km (0.081 R)
• M24: 9,399,683 km (0.089 R)
• M25: 9,748,545 km (0.113 R)
• M26: 10,066,142 km (0.097 R)
• M27: 10,244,013 km (0.104 R)
• M28: 10,747,859 km (0.049 R)
• M29: 11,222,982 km (0.099 R)
• M30: 11,854,734 km (0.073 R)
• M31: 12,307,566 km (0.048 R)
• M32: 12,459,857 km (0.114 R)
• M33: 12,689,340 km (0.11 R)
• M34: 13,464,706 km (0.066 R)
• M35: 13,937,286 km (0.039 R)
• M36: 14,777,427 km (0.088 R)
• M37: 15,101,755 km (0.054 R)
• M38: 15,634,025 km (0.072 R)
• M39: 15,964,486 km (0.066 R)
• M40: 16,380,967 km (0.105 R)
• M41: 16,548,666 km (0.102 R)
• M42: 16,970,233 km (0.115 R)
• M43: 17,737,820 km (0.098 R)
• M44: 19,042,463 km (0.095 R)
• M45: 19,351,382 km (0.11 R)
• M46: 19,929,428 km (0.103 R)
• M47: 20,422,952 km (0.084 R)
• M48: 20,513,159 km (0.104 R)
• M49: 21,239,307 km (0.036 R)
• M50: 21,376,339 km (0.101 R)
• M51: 21,835,455 km (0.115 R)
• M52: 22,344,387 km (0.055 R)
• M53: 22,576,862 km (0.053 R)
• M54: 23,232,400 km (0.104 R)
• M55: 23,989,365 km (0.11 R)
• M56: 24,084,509 km (0.08 R)
• M57: 24,322,968 km (0.093 R)
• M58: 24,562,325 km (0.077 R)
• M59: 24,898,621 km (0.103 R)
• M60: 25,043,132 km (0.094 R)
• M61: 25,381,672 km (0.103 R)
• M62: 25,673,089 km (0.083 R)
• M63: 28,093,732 km (0.09 R)
• M64: 28,546,266 km (0.111 R)
• M65: 29,255,060 km (0.084 R)
• M66: 29,713,727 km (0.115 R)
• M67: 29,969,540 km (0.117 R)
• M68: 30,329,024 km (0.116 R)
• M69: 30,586,631 km (0.091 R)
• M70: 31,572,182 km (0.093 R)
• M71: 32,357,720 km (0.085 R)
• M72: 33,202,649 km (0.109 R)
• M73: 33,787,726 km (0.065 R)
• M74: 34,054,758 km (0.082 R)
• M75: 34,376,244 km (0.095 R)
• M76: 34,698,628 km (0.107 R)
• M77: 34,860,343 km (0.039 R)
• M78: 34,968,203 km (0.119 R)
• M79: 35,238,377 km (0.088 R)
• M80: 35,454,995 km (0.034 R)

Planet 5 - Gas Giant

Semi-Major Axis: 10.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.4

Radius: 11.9

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 10.02 AU - 10.22 AU

Year: 12128 Days

Day: 7.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 91,923,523 km

• M1: 198,367 km (0.08 R)
• M2: 282,441 km (0.106 R)
• M3: 672,891 km (0.085 R)
• M4: 1,081,443 km (0.086 R)
• M5: 1,223,262 km (0.106 R)
• M6: 1,371,513 km (0.113 R)
• M7: 1,614,759 km (0.101 R)
• M8: 1,741,768 km (0.088 R)
• M9: 2,324,003 km (0.088 R)
• M10: 2,701,438 km (0.098 R)
• M11: 3,752,663 km (0.108 R)
• M12: 4,046,174 km (0.108 R)
• M13: 4,246,036 km (0.114 R)
• M14: 4,423,609 km (0.093 R)
• M15: 5,903,431 km (0.1 R)
• M16: 6,045,100 km (0.048 R)
• M17: 7,614,980 km (0.093 R)
• M18: 7,987,330 km (0.092 R)
• M19: 8,685,353 km (0.076 R)
• M20: 9,502,158 km (0.071 R)
• M21: 9,601,939 km (0.108 R)
• M22: 9,768,741 km (0.094 R)
• M23: 10,755,937 km (0.086 R)
• M24: 11,490,612 km (0.075 R)
• M25: 12,205,391 km (0.108 R)
• M26: 12,641,170 km (0.095 R)
• M27: 13,156,086 km (0.108 R)
• M28: 13,752,831 km (0.095 R)
• M29: 13,903,477 km (0.081 R)
• M30: 14,626,333 km (0.1 R)
• M31: 15,166,831 km (0.067 R)
• M32: 15,322,562 km (0.073 R)
• M33: 15,556,982 km (0.113 R)
• M34: 15,713,910 km (0.079 R)
• M35: 15,910,930 km (0.119 R)
• M36: 16,908,000 km (0.106 R)
• M37: 17,271,822 km (0.066 R)
• M38: 17,434,435 km (0.115 R)
• M39: 17,556,657 km (0.083 R)
• M40: 18,048,534 km (0.107 R)
• M41: 18,586,638 km (0.086 R)
• M42: 18,920,391 km (0.115 R)
• M43: 19,551,395 km (0.031 R)
• M44: 19,805,860 km (0.098 R)
• M45: 20,489,523 km (0.03 R)
• M46: 20,661,710 km (0.064 R)
• M47: 20,920,813 km (0.096 R)
• M48: 21,529,527 km (0.115 R)
• M49: 22,542,454 km (0.093 R)
• M50: 22,764,607 km (0.054 R)
• M51: 23,211,306 km (0.117 R)
• M52: 24,340,621 km (0.081 R)
• M53: 24,477,353 km (0.091 R)
• M54: 24,568,608 km (0.113 R)
• M55: 24,980,900 km (0.118 R)
• M56: 25,256,908 km (0.084 R)
• M57: 26,277,913 km (0.106 R)
• M58: 27,076,167 km (0.106 R)
• M59: 28,168,681 km (0.062 R)
• M60: 28,937,315 km (0.079 R)
• M61: 29,421,114 km (0.025 R)
• M62: 29,566,822 km (0.111 R)
• M63: 29,956,375 km (0.111 R)
• M64: 30,151,900 km (0.092 R)
• M65: 30,790,084 km (0.092 R)
• M66: 33,742,099 km (0.108 R)

Planet 6 - Ice Giant

Semi-Major Axis: 15.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 198.8

Radius: 3.3

Gravity: 18.26 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 14.11 AU - 16.59 AU

Year: 22656 Days

Day: 18.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 91,923,523 km

• M1: 66,421 km (0.113 R)
• M2: 162,314 km (0.115 R)
• M3: 297,401 km (0.045 R)
• M4: 339,587 km (0.113 R)
• M5: 968,497 km (0.117 R)
• M6: 1,054,216 km (0.034 R)
• M7: 1,120,039 km (0.037 R)
• M8: 1,232,686 km (0.097 R)
• M9: 1,517,970 km (0.067 R)
• M10: 1,642,734 km (0.09 R)
• M11: 2,400,747 km (0.08 R)
• M12: 2,664,488 km (0.079 R)
• M13: 2,754,396 km (0.107 R)
• M14: 3,124,052 km (0.107 R)
• M15: 3,411,579 km (0.059 R)
• M16: 3,476,505 km (0.098 R)
• M17: 4,535,807 km (0.069 R)
• M18: 4,715,325 km (0.114 R)
• M19: 5,192,841 km (0.097 R)
• M20: 5,456,433 km (0.109 R)
• M21: 5,762,959 km (0.091 R)
• M22: 6,114,364 km (0.119 R)
• M23: 6,312,581 km (0.088 R)
• M24: 6,919,949 km (0.095 R)
• M25: 7,545,717 km (0.108 R)
• M26: 7,588,053 km (0.074 R)
• M27: 8,059,286 km (0.112 R)
• M28: 8,407,849 km (0.075 R)
• M29: 10,036,222 km (0.061 R)
• M30: 10,223,070 km (0.052 R)
• M31: 10,742,773 km (0.079 R)
• M32: 11,465,181 km (0.08 R)
• M33: 13,007,086 km (0.092 R)
• M34: 13,672,797 km (0.091 R)
• M35: 14,035,871 km (0.115 R)
• M36: 14,192,350 km (0.104 R)
• M37: 14,244,709 km (0.119 R)
• M38: 14,612,720 km (0.039 R)
• M39: 14,824,401 km (0.044 R)
• M40: 15,304,461 km (0.03 R)
• M41: 15,519,433 km (0.116 R)
• M42: 17,330,614 km (0.074 R)
• M43: 17,554,712 km (0.093 R)
• M44: 18,919,044 km (0.083 R)
• M45: 20,968,834 km (0.071 R)
• M46: 21,387,260 km (0.078 R)
• M47: 21,507,237 km (0.095 R)
• M48: 21,567,375 km (0.073 R)
• M49: 21,748,090 km (0.106 R)
• M50: 22,050,277 km (0.082 R)
• M51: 22,110,864 km (0.12 R)
• M52: 22,414,698 km (0.109 R)
• M53: 22,658,692 km (0.117 R)
• M54: 23,088,038 km (0.078 R)
• M55: 25,147,402 km (0.082 R)
• M56: 25,210,832 km (0.112 R)
• M57: 26,295,267 km (0.106 R)
• M58: 26,423,921 km (0.113 R)
• M59: 27,264,810 km (0.11 R)
• M60: 27,460,185 km (0.083 R)
• M61: 28,114,526 km (0.1 R)
• M62: 28,246,023 km (0.097 R)
• M63: 28,707,831 km (0.114 R)
• M64: 29,105,612 km (0.084 R)
• M65: 30,647,517 km (0.113 R)
• M66: 30,850,671 km (0.092 R)
• M67: 32,353,382 km (0.044 R)
• M68: 32,422,197 km (0.116 R)
• M69: 33,044,225 km (0.114 R)
• M70: 33,183,052 km (0.11 R)
• M71: 33,740,005 km (0.084 R)
• M72: 34,229,938 km (0.076 R)
• M73: 35,004,555 km (0.12 R)
• M74: 35,358,504 km (0.085 R)
• M75: 35,429,413 km (0.103 R)
• M76: 35,856,066 km (0.085 R)
• M77: 35,998,783 km (0.112 R)
• M78: 38,524,444 km (0.116 R)
• M79: 40,363,301 km (0.082 R)
• M80: 40,883,153 km (0.098 R)
• M81: 41,779,693 km (0.117 R)
• M82: 42,155,184 km (0.084 R)
• M83: 43,364,084 km (0.116 R)
• M84: 46,902,822 km (0.117 R)
• M85: 47,762,711 km (0.074 R)
• M86: 48,233,794 km (0.078 R)
• M87: 49,339,323 km (0.079 R)
• M88: 50,453,079 km (0.025 R)
• M89: 50,932,839 km (0.056 R)
• M90: 51,093,208 km (0.051 R)
• M91: 51,414,245 km (0.093 R)
• M92: 52,705,275 km (0.087 R)
• M93: 53,029,752 km (0.117 R)
• M94: 53,354,829 km (0.079 R)
• M95: 53,843,714 km (0.118 R)
• M96: 54,333,947 km (0.059 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 655.2

Radius: 5.6

Gravity: 20.89 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 17.29 AU - 17.35 AU

Year: 27155 Days

Day: 19.8 Hours

Environment

Temp: -203 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 91,923,523 km

• M1: 77,791 km (0.116 R)
• M2: 291,417 km (0.086 R)
• M3: 523,293 km (0.111 R)
• M4: 750,084 km (0.093 R)
• M5: 1,770,790 km (0.058 R)
• M6: 2,887,688 km (0.062 R)
• M7: 2,930,921 km (0.099 R)
• M8: 4,374,990 km (0.052 R)
• M9: 4,881,229 km (0.114 R)
• M10: 6,058,863 km (0.062 R)
• M11: 8,101,173 km (0.088 R)
• M12: 8,285,328 km (0.096 R)
• M13: 8,657,827 km (0.071 R)
• M14: 9,547,934 km (0.092 R)
• M15: 10,267,650 km (0.083 R)
• M16: 10,533,635 km (0.094 R)
• M17: 11,276,987 km (0.119 R)
• M18: 11,345,353 km (0.065 R)
• M19: 11,897,519 km (0.032 R)
• M20: 12,671,089 km (0.118 R)
• M21: 13,028,030 km (0.104 R)
• M22: 13,099,837 km (0.058 R)
• M23: 13,388,261 km (0.076 R)
• M24: 15,923,646 km (0.082 R)
• M25: 16,386,203 km (0.061 R)
• M26: 16,619,127 km (0.057 R)
• M27: 19,007,756 km (0.117 R)
• M28: 19,580,267 km (0.03 R)
• M29: 19,910,130 km (0.084 R)
• M30: 21,586,225 km (0.06 R)
• M31: 22,097,849 km (0.118 R)
• M32: 22,441,177 km (0.11 R)
• M33: 23,831,838 km (0.116 R)
• M34: 24,715,064 km (0.104 R)
• M35: 25,429,544 km (0.06 R)
• M36: 25,609,061 km (0.119 R)
• M37: 26,878,399 km (0.078 R)
• M38: 27,520,623 km (0.073 R)
• M39: 28,353,883 km (0.069 R)
• M40: 29,950,242 km (0.066 R)
• M41: 30,234,926 km (0.03 R)
• M42: 30,902,881 km (0.066 R)
• M43: 31,094,516 km (0.107 R)
• M44: 32,447,479 km (0.025 R)
• M45: 32,739,943 km (0.06 R)
• M46: 33,131,141 km (0.107 R)
• M47: 34,910,907 km (0.116 R)
• M48: 35,511,094 km (0.063 R)
• M49: 36,316,529 km (0.102 R)
• M50: 36,417,657 km (0.117 R)
• M51: 38,253,522 km (0.1 R)
• M52: 38,459,369 km (0.113 R)
• M53: 38,665,664 km (0.108 R)
• M54: 40,223,875 km (0.076 R)
• M55: 40,642,899 km (0.113 R)
• M56: 43,294,222 km (0.075 R)
• M57: 43,723,568 km (0.091 R)
• M58: 44,262,270 km (0.118 R)
• M59: 45,673,277 km (0.09 R)
• M60: 46,000,896 km (0.102 R)
• M61: 50,218,659 km (0.094 R)
• M62: 50,556,900 km (0.063 R)
• M63: 52,031,187 km (0.083 R)
• M64: 52,259,174 km (0.118 R)
• M65: 53,060,121 km (0.082 R)
• M66: 53,749,767 km (0.116 R)
• M67: 54,211,127 km (0.065 R)
• M68: 58,067,760 km (0.097 R)
• M69: 58,659,868 km (0.117 R)
• M70: 59,372,852 km (0.105 R)
• M71: 59,611,161 km (0.116 R)
• M72: 61,047,899 km (0.086 R)
• M73: 61,288,303 km (0.047 R)
• M74: 61,891,182 km (0.091 R)
• M75: 63,955,034 km (0.099 R)
• M76: 64,934,153 km (0.094 R)
• M77: 65,179,792 km (0.112 R)
• M78: 66,288,462 km (0.095 R)
• M79: 70,154,969 km (0.086 R)
• M80: 70,785,374 km (0.113 R)
• M81: 71,291,164 km (0.07 R)
• M82: 73,709,564 km (0.099 R)
• M83: 73,837,619 km (0.102 R)
• M84: 74,222,236 km (0.117 R)
• M85: 76,154,890 km (0.113 R)
• M86: 78,495,798 km (0.064 R)
• M87: 79,938,071 km (0.117 R)
• M88: 80,728,397 km (0.091 R)
• M89: 80,992,437 km (0.053 R)
• M90: 81,256,776 km (0.075 R)
• M91: 82,051,440 km (0.112 R)
• M92: 84,450,691 km (0.105 R)
• M93: 87,008,366 km (0.112 R)
• M94: 88,772,872 km (0.103 R)
• M95: 90,138,252 km (0.119 R)
• M96: 91,785,774 km (0.107 R)
• M97: 91,923,553 km (0.061 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: 359 - 10,641 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit