🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.32

Radius: 0.63

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.58 AU - 0.94 AU

Year: 236 Days

Day: 43.1 Hours

Environment

Temp: 127 °C

Axial Tilt: 28.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 90,694,609 km

• M1: 122,371 km (0.091 R)
• M2: 223,948 km (0.105 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.97

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.86 AU - 1.1 AU

Year: 346 Days

Day: 40.2 Hours

Environment

Temp: 85 °C

Axial Tilt: 3.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 4.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.88

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 3.91 AU - 5.95 AU

Year: 3902 Days

Day: 19.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 21.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 90,694,609 km

• M1: 810,222 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 921.2

Radius: 14.5

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 5.9 AU - 7.02 AU

Year: 5853 Days

Day: 14.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 90,694,609 km

• M1: 201,957 km (0.055 R)
• M2: 362,176 km (0.12 R)
• M3: 567,724 km (0.09 R)
• M4: 862,581 km (0.083 R)
• M5: 1,045,390 km (0.032 R)
• M6: 1,310,477 km (0.085 R)
• M7: 1,433,746 km (0.038 R)
• M8: 1,561,054 km (0.056 R)
• M9: 1,827,936 km (0.113 R)
• M10: 1,947,016 km (0.113 R)
• M11: 2,172,311 km (0.106 R)
• M12: 2,785,213 km (0.112 R)
• M13: 3,064,213 km (0.089 R)
• M14: 3,624,607 km (0.063 R)
• M15: 3,725,436 km (0.118 R)
• M16: 4,033,607 km (0.097 R)
• M17: 4,138,176 km (0.04 R)
• M18: 4,403,713 km (0.105 R)
• M19: 5,064,187 km (0.089 R)
• M20: 6,477,139 km (0.106 R)
• M21: 6,786,358 km (0.101 R)
• M22: 7,100,364 km (0.087 R)
• M23: 7,483,484 km (0.103 R)
• M24: 7,742,887 km (0.088 R)
• M25: 8,071,104 km (0.056 R)
• M26: 8,170,587 km (0.089 R)
• M27: 8,605,917 km (0.035 R)
• M28: 9,049,026 km (0.049 R)
• M29: 9,152,398 km (0.059 R)
• M30: 9,395,045 km (0.091 R)
• M31: 9,499,764 km (0.119 R)
• M32: 9,816,014 km (0.1 R)
• M33: 10,422,932 km (0.107 R)
• M34: 11,374,824 km (0.099 R)
• M35: 11,673,271 km (0.092 R)
• M36: 11,861,166 km (0.12 R)
• M37: 12,354,540 km (0.05 R)
• M38: 12,738,558 km (0.09 R)
• M39: 13,321,990 km (0.112 R)
• M40: 14,033,627 km (0.069 R)
• M41: 14,273,582 km (0.118 R)
• M42: 14,394,158 km (0.072 R)
• M43: 14,595,815 km (0.103 R)
• M44: 14,798,371 km (0.064 R)
• M45: 15,124,345 km (0.043 R)
• M46: 15,659,307 km (0.083 R)
• M47: 15,783,623 km (0.117 R)
• M48: 16,075,039 km (0.097 R)
• M49: 16,368,101 km (0.117 R)
• M50: 16,705,445 km (0.108 R)
• M51: 16,832,453 km (0.055 R)
• M52: 17,472,583 km (0.102 R)
• M53: 17,601,536 km (0.113 R)
• M54: 18,120,790 km (0.048 R)
• M55: 19,619,013 km (0.047 R)
• M56: 20,067,208 km (0.12 R)
• M57: 20,791,411 km (0.061 R)
• M58: 21,202,656 km (0.089 R)
• M59: 22,639,244 km (0.083 R)
• M60: 22,968,060 km (0.081 R)
• M61: 24,107,398 km (0.094 R)
• M62: 24,925,399 km (0.108 R)
• M63: 25,459,762 km (0.056 R)
• M64: 26,096,002 km (0.1 R)
• M65: 26,243,506 km (0.113 R)
• M66: 26,687,961 km (0.09 R)
• M67: 27,935,458 km (0.091 R)
• M68: 29,559,791 km (0.062 R)
• M69: 29,765,040 km (0.096 R)
• M70: 30,073,810 km (0.059 R)
• M71: 30,331,866 km (0.109 R)
• M72: 31,110,523 km (0.084 R)
• M73: 31,423,781 km (0.118 R)
• M74: 31,790,595 km (0.075 R)
• M75: 32,581,519 km (0.071 R)
• M76: 33,005,928 km (0.118 R)
• M77: 33,112,441 km (0.102 R)
• M78: 35,318,711 km (0.097 R)
• M79: 35,427,618 km (0.104 R)
• M80: 35,864,145 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.8

Radius: 14.8

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 5.89 AU - 7.37 AU

Year: 6085 Days

Day: 8.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 90,694,609 km

• M1: 198,666 km (0.101 R)
• M2: 591,510 km (0.106 R)
• M3: 707,598 km (0.118 R)
• M4: 872,156 km (0.111 R)
• M5: 1,168,060 km (0.044 R)
• M6: 1,513,631 km (0.069 R)
• M7: 1,785,899 km (0.063 R)
• M8: 1,946,268 km (0.118 R)
• M9: 2,056,073 km (0.048 R)
• M10: 2,359,308 km (0.117 R)
• M11: 2,738,539 km (0.045 R)
• M12: 2,862,406 km (0.104 R)
• M13: 3,051,946 km (0.079 R)
• M14: 3,713,917 km (0.073 R)
• M15: 3,851,846 km (0.071 R)
• M16: 4,347,763 km (0.088 R)
• M17: 4,493,322 km (0.112 R)
• M18: 4,665,210 km (0.108 R)
• M19: 5,426,663 km (0.09 R)
• M20: 5,557,411 km (0.099 R)
• M21: 6,308,991 km (0.048 R)
• M22: 6,640,949 km (0.106 R)
• M23: 6,752,997 km (0.089 R)
• M24: 7,207,177 km (0.109 R)
• M25: 7,438,156 km (0.099 R)
• M26: 8,085,765 km (0.096 R)
• M27: 8,235,512 km (0.074 R)
• M28: 8,386,157 km (0.117 R)
• M29: 8,843,777 km (0.106 R)
• M30: 9,029,129 km (0.111 R)
• M31: 9,246,944 km (0.108 R)
• M32: 9,687,958 km (0.101 R)
• M33: 10,071,527 km (0.031 R)
• M34: 10,492,645 km (0.031 R)
• M35: 11,587,701 km (0.064 R)
• M36: 12,063,273 km (0.114 R)
• M37: 12,614,691 km (0.055 R)
• M38: 12,719,110 km (0.056 R)
• M39: 12,893,541 km (0.067 R)
• M40: 12,998,559 km (0.09 R)
• M41: 13,174,336 km (0.097 R)
• M42: 13,386,466 km (0.042 R)
• M43: 13,777,964 km (0.091 R)
• M44: 14,029,139 km (0.08 R)
• M45: 14,281,959 km (0.114 R)
• M46: 15,344,852 km (0.073 R)
• M47: 17,663,320 km (0.114 R)
• M48: 17,819,201 km (0.037 R)
• M49: 17,975,381 km (0.039 R)
• M50: 18,328,731 km (0.099 R)
• M51: 18,763,762 km (0.07 R)
• M52: 19,082,256 km (0.085 R)
• M53: 19,202,233 km (0.05 R)
• M54: 19,603,604 km (0.056 R)
• M55: 20,455,863 km (0.114 R)
• M56: 21,113,346 km (0.097 R)
• M57: 21,237,363 km (0.115 R)
• M58: 22,112,510 km (0.06 R)
• M59: 22,787,196 km (0.116 R)
• M60: 24,286,616 km (0.114 R)
• M61: 24,503,383 km (0.097 R)
• M62: 24,764,432 km (0.116 R)
• M63: 25,906,312 km (0.084 R)
• M64: 26,483,610 km (0.027 R)
• M65: 26,751,540 km (0.104 R)
• M66: 27,470,358 km (0.096 R)
• M67: 27,877,414 km (0.103 R)
• M68: 28,286,564 km (0.099 R)
• M69: 28,789,362 km (0.093 R)
• M70: 29,664,809 km (0.084 R)
• M71: 29,896,686 km (0.083 R)
• M72: 29,989,586 km (0.112 R)
• M73: 30,129,011 km (0.072 R)
• M74: 31,536,278 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.6

Radius: 11.5

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 6.68 AU - 9.22 AU

Year: 7990 Days

Day: 9.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 90,694,609 km

• M1: 640,877 km (0.035 R)
• M2: 826,528 km (0.1 R)
• M3: 1,310,029 km (0.055 R)
• M4: 1,428,660 km (0.09 R)
• M5: 1,509,891 km (0.088 R)
• M6: 1,592,619 km (0.052 R)
• M7: 2,076,119 km (0.104 R)
• M8: 2,215,844 km (0.115 R)
• M9: 2,382,944 km (0.106 R)
• M10: 3,172,672 km (0.096 R)
• M11: 3,893,584 km (0.091 R)
• M12: 4,272,814 km (0.089 R)
• M13: 4,973,082 km (0.096 R)
• M14: 5,130,010 km (0.087 R)
• M15: 6,858,314 km (0.059 R)
• M16: 7,280,779 km (0.078 R)
• M17: 7,423,645 km (0.092 R)
• M18: 7,675,717 km (0.062 R)
• M19: 8,299,690 km (0.111 R)
• M20: 8,448,839 km (0.088 R)
• M21: 8,901,821 km (0.115 R)
• M22: 9,285,390 km (0.119 R)
• M23: 9,440,374 km (0.076 R)
• M24: 9,949,904 km (0.096 R)
• M25: 10,347,984 km (0.114 R)
• M26: 10,791,841 km (0.107 R)
• M27: 10,914,062 km (0.077 R)
• M28: 11,118,712 km (0.085 R)
• M29: 11,490,313 km (0.085 R)
• M30: 11,573,490 km (0.117 R)
• M31: 12,034,251 km (0.108 R)
• M32: 12,245,633 km (0.104 R)
• M33: 12,458,361 km (0.075 R)
• M34: 13,277,858 km (0.083 R)
• M35: 13,628,067 km (0.098 R)
• M36: 13,936,986 km (0.067 R)
• M37: 14,337,759 km (0.037 R)
• M38: 14,472,098 km (0.025 R)
• M39: 14,968,464 km (0.037 R)
• M40: 15,931,724 km (0.089 R)
• M41: 16,538,045 km (0.109 R)
• M42: 17,104,422 km (0.105 R)
• M43: 17,965,956 km (0.047 R)
• M44: 19,284,662 km (0.108 R)
• M45: 20,382,111 km (0.074 R)
• M46: 20,684,898 km (0.084 R)
• M47: 21,397,432 km (0.096 R)
• M48: 21,602,381 km (0.085 R)
• M49: 21,705,155 km (0.099 R)
• M50: 22,950,857 km (0.113 R)
• M51: 23,371,376 km (0.098 R)
• M52: 23,741,332 km (0.076 R)
• M53: 24,006,718 km (0.065 R)
• M54: 24,166,489 km (0.083 R)
• M55: 24,379,965 km (0.066 R)
• M56: 24,970,577 km (0.106 R)
• M57: 25,078,437 km (0.087 R)
• M58: 25,186,447 km (0.12 R)
• M59: 25,619,982 km (0.041 R)
• M60: 25,728,889 km (0.071 R)
• M61: 26,110,812 km (0.111 R)
• M62: 26,604,785 km (0.072 R)
• M63: 27,101,749 km (0.107 R)
• M64: 28,611,191 km (0.097 R)
• M65: 29,063,725 km (0.115 R)
• M66: 29,177,120 km (0.072 R)
• M67: 29,861,231 km (0.112 R)
• M68: 31,186,967 km (0.102 R)
• M69: 32,237,892 km (0.095 R)
• M70: 32,473,060 km (0.067 R)
• M71: 33,538,197 km (0.089 R)
• M72: 34,134,943 km (0.109 R)
• M73: 34,795,268 km (0.12 R)
• M74: 36,250,855 km (0.117 R)
• M75: 36,556,633 km (0.117 R)
• M76: 37,047,464 km (0.095 R)
• M77: 37,293,852 km (0.107 R)
• M78: 37,850,056 km (0.076 R)
• M79: 38,658,184 km (0.105 R)
• M80: 39,095,758 km (0.12 R)
• M81: 39,534,977 km (0.103 R)
• M82: 39,660,789 km (0.063 R)
• M83: 39,912,712 km (0.038 R)
• M84: 40,925,938 km (0.115 R)
• M85: 42,783,944 km (0.079 R)
• M86: 43,236,477 km (0.065 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.2

Radius: 12.3

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 8.18 AU - 13.3 AU

Year: 12546 Days

Day: 14.9 Hours

Environment

Temp: -179 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 90,694,609 km

• M1: 156,629 km (0.074 R)
• M2: 236,215 km (0.114 R)
• M3: 669,151 km (0.062 R)
• M4: 834,756 km (0.111 R)
• M5: 964,308 km (0.095 R)
• M6: 1,136,645 km (0.03 R)
• M7: 1,226,852 km (0.055 R)
• M8: 1,319,752 km (0.107 R)
• M9: 1,453,942 km (0.107 R)
• M10: 1,532,630 km (0.081 R)
• M11: 1,653,804 km (0.113 R)
• M12: 1,736,382 km (0.087 R)
• M13: 2,712,060 km (0.072 R)
• M14: 3,138,863 km (0.089 R)
• M15: 4,225,541 km (0.067 R)
• M16: 4,661,170 km (0.073 R)
• M17: 5,481,416 km (0.108 R)
• M18: 6,544,308 km (0.105 R)
• M19: 6,777,980 km (0.119 R)
• M20: 7,048,304 km (0.12 R)
• M21: 7,184,887 km (0.069 R)
• M22: 8,022,485 km (0.057 R)
• M23: 8,308,666 km (0.112 R)
• M24: 9,675,541 km (0.109 R)
• M25: 9,941,975 km (0.066 R)
• M26: 10,638,353 km (0.065 R)
• M27: 11,874,331 km (0.111 R)
• M28: 13,029,376 km (0.068 R)
• M29: 13,281,598 km (0.076 R)
• M30: 13,492,980 km (0.083 R)
• M31: 13,577,952 km (0.054 R)
• M32: 13,919,184 km (0.051 R)
• M33: 14,741,225 km (0.118 R)
• M34: 15,312,688 km (0.086 R)
• M35: 15,401,250 km (0.055 R)
• M36: 15,578,823 km (0.061 R)
• M37: 15,757,144 km (0.112 R)
• M38: 15,846,603 km (0.115 R)
• M39: 16,704,547 km (0.073 R)
• M40: 17,670,351 km (0.071 R)
• M41: 17,763,251 km (0.117 R)
• M42: 18,277,269 km (0.058 R)
• M43: 18,418,340 km (0.108 R)
• M44: 18,606,983 km (0.106 R)
• M45: 20,139,015 km (0.114 R)
• M46: 20,675,024 km (0.115 R)
• M47: 21,265,038 km (0.043 R)
• M48: 21,413,439 km (0.064 R)
• M49: 21,611,806 km (0.116 R)
• M50: 21,960,519 km (0.066 R)
• M51: 22,110,565 km (0.063 R)
• M52: 22,815,022 km (0.11 R)
• M53: 23,170,017 km (0.093 R)
• M54: 23,322,757 km (0.12 R)
• M55: 23,577,971 km (0.119 R)
• M56: 24,401,058 km (0.087 R)
• M57: 24,660,311 km (0.112 R)
• M58: 25,600,684 km (0.101 R)
• M59: 26,446,660 km (0.115 R)
• M60: 27,194,350 km (0.119 R)
• M61: 27,948,921 km (0.111 R)
• M62: 28,383,204 km (0.099 R)
• M63: 28,601,168 km (0.102 R)
• M64: 30,198,275 km (0.11 R)
• M65: 30,588,127 km (0.048 R)
• M66: 32,334,533 km (0.085 R)
• M67: 33,248,426 km (0.096 R)
• M68: 33,708,739 km (0.052 R)
• M69: 33,997,313 km (0.109 R)
• M70: 34,228,890 km (0.062 R)
• M71: 35,043,451 km (0.069 R)
• M72: 35,570,484 km (0.094 R)
• M73: 35,805,502 km (0.097 R)
• M74: 36,632,330 km (0.091 R)
• M75: 38,304,834 km (0.093 R)
• M76: 38,787,287 km (0.074 R)
• M77: 38,908,162 km (0.062 R)
• M78: 39,211,098 km (0.112 R)
• M79: 40,002,171 km (0.119 R)
• M80: 40,798,481 km (0.045 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 605.8

Radius: 7.1

Gravity: 12.02 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 14.58 AU - 21.82 AU

Year: 27676 Days

Day: 20.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 90,694,609 km

• M1: 96,341 km (0.117 R)
• M2: 681,568 km (0.084 R)
• M3: 1,193,791 km (0.099 R)
• M4: 1,487,003 km (0.083 R)
• M5: 1,659,639 km (0.089 R)
• M6: 1,802,505 km (0.036 R)
• M7: 2,024,209 km (0.107 R)
• M8: 2,953,511 km (0.092 R)
• M9: 3,083,362 km (0.068 R)
• M10: 3,304,168 km (0.12 R)
• M11: 3,530,061 km (0.092 R)
• M12: 4,140,719 km (0.075 R)
• M13: 4,237,509 km (0.088 R)
• M14: 4,335,197 km (0.106 R)
• M15: 5,194,936 km (0.082 R)
• M16: 5,404,821 km (0.062 R)
• M17: 7,007,613 km (0.115 R)
• M18: 7,651,482 km (0.106 R)
• M19: 7,770,712 km (0.118 R)
• M20: 8,010,667 km (0.064 R)
• M21: 8,683,408 km (0.096 R)
• M22: 9,694,092 km (0.106 R)
• M23: 9,952,447 km (0.103 R)
• M24: 10,344,394 km (0.107 R)
• M25: 11,755,550 km (0.085 R)
• M26: 12,378,625 km (0.11 R)
• M27: 13,584,683 km (0.097 R)
• M28: 13,873,856 km (0.093 R)
• M29: 14,976,392 km (0.04 R)
• M30: 15,200,340 km (0.095 R)
• M31: 15,802,771 km (0.059 R)
• M32: 16,412,981 km (0.032 R)
• M33: 16,798,345 km (0.12 R)
• M34: 17,656,438 km (0.088 R)
• M35: 18,688,963 km (0.105 R)
• M36: 19,091,231 km (0.099 R)
• M37: 19,659,255 km (0.056 R)
• M38: 20,232,813 km (0.076 R)
• M39: 21,061,735 km (0.076 R)
• M40: 21,312,610 km (0.117 R)
• M41: 21,564,383 km (0.056 R)
• M42: 22,071,071 km (0.071 R)
• M43: 23,614,473 km (0.107 R)
• M44: 24,223,934 km (0.101 R)
• M45: 28,448,578 km (0.092 R)
• M46: 28,818,384 km (0.107 R)
• M47: 29,563,082 km (0.099 R)
• M48: 30,031,623 km (0.116 R)
• M49: 32,122,403 km (0.12 R)
• M50: 34,554,864 km (0.077 R)
• M51: 35,048,388 km (0.078 R)
• M52: 35,942,684 km (0.088 R)
• M53: 37,146,647 km (0.035 R)
• M54: 38,160,023 km (0.118 R)
• M55: 39,079,901 km (0.088 R)
• M56: 40,733,107 km (0.072 R)
• M57: 42,198,268 km (0.076 R)
• M58: 44,642,697 km (0.101 R)
• M59: 45,503,633 km (0.1 R)
• M60: 45,719,652 km (0.096 R)
• M61: 46,696,377 km (0.108 R)
• M62: 49,001,830 km (0.088 R)
• M63: 49,112,532 km (0.068 R)
• M64: 50,447,394 km (0.105 R)
• M65: 51,344,084 km (0.105 R)
• M66: 52,019,967 km (0.062 R)
• M67: 52,358,956 km (0.035 R)
• M68: 52,925,782 km (0.05 R)
• M69: 53,722,540 km (0.056 R)
• M70: 54,294,154 km (0.109 R)
• M71: 54,752,821 km (0.12 R)
• M72: 56,600,504 km (0.089 R)
• M73: 57,648,886 km (0.119 R)
• M74: 58,468,682 km (0.086 R)
• M75: 61,905,693 km (0.119 R)
• M76: 62,504,982 km (0.043 R)
• M77: 67,736,869 km (0.045 R)
• M78: 68,849,428 km (0.102 R)
• M79: 69,345,943 km (0.118 R)
• M80: 70,342,415 km (0.087 R)
• M81: 70,842,520 km (0.094 R)
• M82: 74,884,954 km (0.045 R)
• M83: 80,564,288 km (0.107 R)
• M84: 82,400,153 km (0.082 R)
• M85: 87,721,050 km (0.071 R)
• M86: 88,124,665 km (0.114 R)
• M87: 90,422,937 km (0.049 R)

Kuiper Belt

Range: 30.8 - 50.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 198 - 10,707 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit