🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 1.07 AU - 1.73 AU

Year: 627 Days

Day: 27.7 Hours

Environment

Temp: -44 °C

Axial Tilt: 14.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.98

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.77 AU - 2.89 AU

Year: 1347 Days

Day: 14.8 Hours

Environment

Temp: -99 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.07

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 2.38 AU - 3.2 AU

Year: 1765 Days

Day: 19.6 Hours

Environment

Temp: -98 °C

Axial Tilt: 4.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.95

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 2.57 AU - 3.45 AU

Year: 1978 Days

Day: 24.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 33.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.77

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 3.25 AU - 3.69 AU

Year: 2448 Days

Day: 13.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 0.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 5.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 730.8

Radius: 13.1

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 5.25 AU - 6.11 AU

Year: 5127 Days

Day: 11.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 92,955,442 km

• M1: 173,982 km (0.083 R)
• M2: 279,000 km (0.11 R)
• M3: 422,016 km (0.11 R)
• M4: 511,924 km (0.065 R)
• M5: 621,579 km (0.085 R)
• M6: 963,859 km (0.109 R)
• M7: 1,091,316 km (0.109 R)
• M8: 1,380,190 km (0.069 R)
• M9: 1,476,681 km (0.107 R)
• M10: 1,592,320 km (0.095 R)
• M11: 1,711,100 km (0.03 R)
• M12: 1,815,520 km (0.111 R)
• M13: 1,994,289 km (0.03 R)
• M14: 3,145,146 km (0.106 R)
• M15: 3,383,605 km (0.07 R)
• M16: 3,494,008 km (0.062 R)
• M17: 3,809,809 km (0.118 R)
• M18: 4,324,725 km (0.068 R)
• M19: 4,420,767 km (0.103 R)
• M20: 4,639,479 km (0.119 R)
• M21: 4,787,431 km (0.115 R)
• M22: 5,062,542 km (0.11 R)
• M23: 5,189,401 km (0.107 R)
• M24: 5,420,380 km (0.116 R)
• M25: 6,026,101 km (0.059 R)
• M26: 6,214,744 km (0.103 R)
• M27: 6,323,502 km (0.079 R)
• M28: 6,904,690 km (0.109 R)
• M29: 7,017,337 km (0.042 R)
• M30: 8,029,367 km (0.113 R)
• M31: 8,177,768 km (0.082 R)
• M32: 9,025,240 km (0.093 R)
• M33: 9,397,140 km (0.111 R)
• M34: 9,616,301 km (0.099 R)
• M35: 9,742,412 km (0.092 R)
• M36: 9,837,257 km (0.081 R)
• M37: 10,542,611 km (0.1 R)
• M38: 10,770,448 km (0.045 R)
• M39: 11,032,993 km (0.105 R)
• M40: 11,164,938 km (0.087 R)
• M41: 11,264,271 km (0.077 R)
• M42: 11,597,725 km (0.078 R)
• M43: 12,240,098 km (0.11 R)
• M44: 12,755,462 km (0.094 R)
• M45: 13,137,835 km (0.055 R)
• M46: 13,524,096 km (0.042 R)
• M47: 13,736,376 km (0.104 R)
• M48: 14,632,766 km (0.057 R)
• M49: 15,548,006 km (0.036 R)
• M50: 15,956,558 km (0.117 R)
• M51: 16,106,006 km (0.032 R)
• M52: 16,936,424 km (0.068 R)
• M53: 17,203,606 km (0.118 R)
• M54: 17,896,992 km (0.107 R)
• M55: 18,130,215 km (0.085 R)
• M56: 18,875,212 km (0.104 R)
• M57: 19,033,337 km (0.085 R)
• M58: 20,031,604 km (0.055 R)
• M59: 20,761,043 km (0.119 R)
• M60: 21,540,298 km (0.096 R)
• M61: 22,916,449 km (0.094 R)
• M62: 23,085,345 km (0.101 R)
• M63: 23,849,790 km (0.096 R)
• M64: 24,321,023 km (0.085 R)
• M65: 24,493,211 km (0.109 R)
• M66: 24,752,164 km (0.091 R)
• M67: 25,012,166 km (0.049 R)
• M68: 25,229,382 km (0.051 R)
• M69: 25,797,255 km (0.103 R)
• M70: 26,060,697 km (0.114 R)
• M71: 27,570,888 km (0.12 R)
• M72: 27,660,646 km (0.065 R)
• M73: 29,429,492 km (0.058 R)
• M74: 29,658,825 km (0.043 R)
• M75: 29,981,059 km (0.03 R)
• M76: 31,328,188 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368.6

Radius: 13.6

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 5.86 AU - 8.48 AU

Year: 7272 Days

Day: 6.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 138.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 92,955,442 km

• M1: 300,542 km (0.062 R)
• M2: 488,587 km (0.116 R)
• M3: 749,934 km (0.106 R)
• M4: 865,424 km (0.101 R)
• M5: 1,087,277 km (0.12 R)
• M6: 1,251,237 km (0.114 R)
• M7: 1,882,689 km (0.116 R)
• M8: 2,848,493 km (0.106 R)
• M9: 3,016,043 km (0.062 R)
• M10: 3,338,875 km (0.094 R)
• M11: 3,605,458 km (0.087 R)
• M12: 4,183,205 km (0.075 R)
• M13: 4,568,420 km (0.105 R)
• M14: 4,790,273 km (0.069 R)
• M15: 4,990,435 km (0.067 R)
• M16: 5,142,427 km (0.079 R)
• M17: 5,555,167 km (0.12 R)
• M18: 5,845,387 km (0.113 R)
• M19: 6,032,684 km (0.07 R)
• M20: 6,249,152 km (0.056 R)
• M21: 6,440,637 km (0.106 R)
• M22: 6,578,716 km (0.067 R)
• M23: 6,829,741 km (0.041 R)
• M24: 7,226,475 km (0.073 R)
• M25: 8,012,911 km (0.079 R)
• M26: 8,101,921 km (0.09 R)
• M27: 8,461,555 km (0.053 R)
• M28: 8,734,720 km (0.117 R)
• M29: 9,134,596 km (0.113 R)
• M30: 9,666,416 km (0.053 R)
• M31: 9,920,284 km (0.086 R)
• M32: 10,176,395 km (0.088 R)
• M33: 10,369,825 km (0.072 R)
• M34: 11,388,886 km (0.112 R)
• M35: 11,893,480 km (0.072 R)
• M36: 12,508,626 km (0.043 R)
• M37: 13,029,227 km (0.106 R)
• M38: 13,450,943 km (0.113 R)
• M39: 14,779,073 km (0.098 R)
• M40: 14,998,383 km (0.102 R)
• M41: 15,145,288 km (0.109 R)
• M42: 15,477,396 km (0.044 R)
• M43: 16,224,039 km (0.065 R)
• M44: 16,412,532 km (0.094 R)
• M45: 16,753,615 km (0.072 R)
• M46: 17,327,473 km (0.106 R)
• M47: 17,674,988 km (0.09 R)
• M48: 17,868,867 km (0.06 R)
• M49: 18,180,779 km (0.09 R)
• M50: 18,337,408 km (0.1 R)
• M51: 18,809,987 km (0.092 R)
• M52: 19,047,848 km (0.118 R)
• M53: 19,446,377 km (0.096 R)
• M54: 20,049,406 km (0.064 R)
• M55: 20,211,271 km (0.089 R)
• M56: 20,373,435 km (0.06 R)
• M57: 20,577,038 km (0.092 R)
• M58: 20,781,089 km (0.094 R)
• M59: 21,232,575 km (0.106 R)
• M60: 21,356,293 km (0.047 R)
• M61: 22,943,975 km (0.048 R)
• M62: 23,113,170 km (0.11 R)
• M63: 23,240,478 km (0.079 R)
• M64: 23,325,450 km (0.115 R)
• M65: 23,538,327 km (0.077 R)
• M66: 23,751,953 km (0.112 R)
• M67: 24,224,084 km (0.028 R)
• M68: 24,916,273 km (0.063 R)
• M69: 25,834,655 km (0.115 R)
• M70: 25,922,618 km (0.073 R)
• M71: 26,675,096 km (0.067 R)
• M72: 26,808,686 km (0.091 R)
• M73: 27,524,512 km (0.107 R)
• M74: 27,749,507 km (0.052 R)
• M75: 28,020,429 km (0.053 R)
• M76: 28,337,577 km (0.086 R)
• M77: 29,525,683 km (0.049 R)
• M78: 30,311,371 km (0.089 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.1

Radius: 13.4

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 6.68 AU - 9.32 AU

Year: 8570 Days

Day: 7 Hours

Environment

Temp: -181 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (76)

Outer Limit: 92,955,442 km

• M1: 170,242 km (0.098 R)
• M2: 256,710 km (0.066 R)
• M3: 346,917 km (0.065 R)
• M4: 620,981 km (0.112 R)
• M5: 719,566 km (0.116 R)
• M6: 919,129 km (0.104 R)
• M7: 1,227,301 km (0.061 R)
• M8: 1,375,253 km (0.076 R)
• M9: 1,470,846 km (0.061 R)
• M10: 1,689,558 km (0.066 R)
• M11: 1,983,967 km (0.119 R)
• M12: 2,204,474 km (0.058 R)
• M13: 2,527,157 km (0.09 R)
• M14: 2,646,087 km (0.061 R)
• M15: 2,816,030 km (0.06 R)
• M16: 3,090,393 km (0.063 R)
• M17: 3,347,402 km (0.057 R)
• M18: 3,692,375 km (0.092 R)
• M19: 3,800,833 km (0.087 R)
• M20: 4,132,791 km (0.037 R)
• M21: 4,273,862 km (0.088 R)
• M22: 4,474,173 km (0.106 R)
• M23: 4,795,360 km (0.096 R)
• M24: 5,245,649 km (0.108 R)
• M25: 6,943,436 km (0.101 R)
• M26: 7,247,718 km (0.097 R)
• M27: 7,350,043 km (0.07 R)
• M28: 8,009,620 km (0.085 R)
• M29: 8,906,459 km (0.098 R)
• M30: 9,646,968 km (0.092 R)
• M31: 10,176,994 km (0.117 R)
• M32: 10,561,610 km (0.075 R)
• M33: 10,794,534 km (0.081 R)
• M34: 10,990,058 km (0.119 R)
• M35: 11,186,630 km (0.098 R)
• M36: 11,305,261 km (0.098 R)
• M37: 11,703,490 km (0.047 R)
• M38: 11,985,033 km (0.117 R)
• M39: 13,133,646 km (0.065 R)
• M40: 14,231,395 km (0.067 R)
• M41: 15,095,921 km (0.116 R)
• M42: 15,402,597 km (0.109 R)
• M43: 17,193,882 km (0.104 R)
• M44: 18,861,898 km (0.089 R)
• M45: 21,214,175 km (0.106 R)
• M46: 21,459,515 km (0.119 R)
• M47: 22,399,888 km (0.07 R)
• M48: 24,526,122 km (0.095 R)
• M49: 24,680,358 km (0.03 R)
• M50: 25,041,786 km (0.103 R)
• M51: 25,145,308 km (0.097 R)
• M52: 25,665,310 km (0.092 R)
• M53: 26,031,525 km (0.063 R)
• M54: 26,663,128 km (0.065 R)
• M55: 28,318,428 km (0.108 R)
• M56: 28,426,288 km (0.112 R)
• M57: 28,750,916 km (0.063 R)
• M58: 29,240,101 km (0.094 R)
• M59: 30,392,453 km (0.092 R)
• M60: 31,447,716 km (0.118 R)
• M61: 31,839,513 km (0.112 R)
• M62: 32,176,707 km (0.062 R)
• M63: 32,514,948 km (0.078 R)
• M64: 34,281,848 km (0.039 R)
• M65: 34,454,484 km (0.114 R)
• M66: 34,685,164 km (0.118 R)
• M67: 35,380,046 km (0.108 R)
• M68: 37,196,763 km (0.113 R)
• M69: 37,789,170 km (0.075 R)
• M70: 37,908,100 km (0.045 R)
• M71: 38,146,111 km (0.079 R)
• M72: 38,384,719 km (0.034 R)
• M73: 38,803,593 km (0.084 R)
• M74: 39,163,675 km (0.102 R)
• M75: 39,283,952 km (0.11 R)
• M76: 40,615,373 km (0.064 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 59.4

Radius: 5.6

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 11.11 AU - 16.67 AU

Year: 19607 Days

Day: 24.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 92,955,442 km

• M1: 130,599 km (0.056 R)
• M2: 429,346 km (0.052 R)
• M3: 657,782 km (0.112 R)
• M4: 778,208 km (0.118 R)
• M5: 1,329,476 km (0.03 R)
• M6: 1,482,964 km (0.048 R)
• M7: 1,624,184 km (0.102 R)
• M8: 1,696,440 km (0.092 R)
• M9: 1,844,392 km (0.102 R)
• M10: 2,054,428 km (0.092 R)
• M11: 2,456,098 km (0.112 R)
• M12: 2,903,545 km (0.086 R)
• M13: 2,969,518 km (0.113 R)
• M14: 3,944,746 km (0.041 R)
• M15: 4,265,185 km (0.082 R)
• M16: 4,878,686 km (0.034 R)
• M17: 5,062,691 km (0.1 R)
• M18: 5,222,312 km (0.049 R)
• M19: 5,410,656 km (0.063 R)
• M20: 5,628,620 km (0.088 R)
• M21: 5,683,672 km (0.104 R)
• M22: 6,615,816 km (0.108 R)
• M23: 6,995,944 km (0.115 R)
• M24: 7,055,036 km (0.103 R)
• M25: 7,594,635 km (0.092 R)
• M26: 8,459,909 km (0.053 R)
• M27: 8,554,605 km (0.104 R)
• M28: 9,815,565 km (0.103 R)
• M29: 9,881,837 km (0.098 R)
• M30: 9,981,469 km (0.065 R)
• M31: 10,892,819 km (0.029 R)
• M32: 11,550,152 km (0.098 R)
• M33: 11,585,009 km (0.103 R)
• M34: 12,007,174 km (0.109 R)
• M35: 12,398,522 km (0.106 R)
• M36: 13,120,780 km (0.039 R)
• M37: 13,487,146 km (0.099 R)
• M38: 13,931,003 km (0.106 R)
• M39: 13,968,252 km (0.09 R)
• M40: 14,342,247 km (0.11 R)
• M41: 14,492,743 km (0.081 R)
• M42: 15,291,446 km (0.115 R)
• M43: 15,522,275 km (0.105 R)
• M44: 15,715,406 km (0.083 R)
• M45: 15,948,330 km (0.03 R)
• M46: 16,143,405 km (0.088 R)
• M47: 16,456,963 km (0.112 R)
• M48: 17,490,085 km (0.09 R)
• M49: 18,339,801 km (0.12 R)
• M50: 18,544,152 km (0.099 R)
• M51: 18,831,380 km (0.086 R)
• M52: 19,037,526 km (0.1 R)
• M53: 20,121,213 km (0.09 R)
• M54: 20,585,714 km (0.077 R)
• M55: 21,310,516 km (0.1 R)
• M56: 23,357,464 km (0.07 R)
• M57: 24,381,910 km (0.089 R)
• M58: 26,751,390 km (0.111 R)
• M59: 28,292,697 km (0.109 R)
• M60: 28,528,763 km (0.119 R)
• M61: 31,803,161 km (0.096 R)
• M62: 31,901,297 km (0.08 R)
• M63: 32,739,045 km (0.08 R)
• M64: 32,788,562 km (0.11 R)
• M65: 32,887,745 km (0.116 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 523.3

Radius: 4.5

Gravity: 25.84 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 17.79 AU - 19.83 AU

Year: 30898 Days

Day: 20.2 Hours

Environment

Temp: -193 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (95)

Outer Limit: 92,955,442 km

• M1: 243,994 km (0.106 R)
• M2: 338,690 km (0.04 R)
• M3: 744,100 km (0.038 R)
• M4: 799,152 km (0.087 R)
• M5: 1,032,973 km (0.071 R)
• M6: 1,353,562 km (0.099 R)
• M7: 1,888,224 km (0.108 R)
• M8: 2,317,720 km (0.112 R)
• M9: 2,606,145 km (0.05 R)
• M10: 3,082,315 km (0.088 R)
• M11: 3,917,669 km (0.111 R)
• M12: 4,664,013 km (0.04 R)
• M13: 7,209,720 km (0.115 R)
• M14: 7,628,594 km (0.064 R)
• M15: 7,810,654 km (0.117 R)
• M16: 7,871,541 km (0.117 R)
• M17: 8,678,621 km (0.118 R)
• M18: 8,741,901 km (0.091 R)
• M19: 8,996,068 km (0.104 R)
• M20: 9,446,806 km (0.106 R)
• M21: 9,642,181 km (0.119 R)
• M22: 9,707,555 km (0.114 R)
• M23: 10,036,970 km (0.107 R)
• M24: 10,169,813 km (0.06 R)
• M25: 10,370,124 km (0.072 R)
• M26: 10,910,472 km (0.058 R)
• M27: 11,047,055 km (0.069 R)
• M28: 11,668,335 km (0.093 R)
• M29: 12,585,818 km (0.115 R)
• M30: 13,599,494 km (0.102 R)
• M31: 14,190,405 km (0.057 R)
• M32: 14,564,101 km (0.091 R)
• M33: 15,704,186 km (0.106 R)
• M34: 18,473,542 km (0.12 R)
• M35: 19,127,285 km (0.095 R)
• M36: 20,122,260 km (0.11 R)
• M37: 21,133,841 km (0.074 R)
• M38: 22,421,579 km (0.085 R)
• M39: 22,595,113 km (0.104 R)
• M40: 23,381,848 km (0.097 R)
• M41: 23,646,038 km (0.115 R)
• M42: 23,911,275 km (0.025 R)
• M43: 28,662,204 km (0.095 R)
• M44: 30,180,922 km (0.052 R)
• M45: 30,660,832 km (0.112 R)
• M46: 33,593,099 km (0.073 R)
• M47: 33,990,731 km (0.025 R)
• M48: 34,090,363 km (0.103 R)
• M49: 35,495,835 km (0.101 R)
• M50: 36,613,331 km (0.069 R)
• M51: 37,125,105 km (0.063 R)
• M52: 37,227,729 km (0.101 R)
• M53: 37,330,503 km (0.115 R)
• M54: 37,639,273 km (0.112 R)
• M55: 39,614,264 km (0.105 R)
• M56: 40,878,965 km (0.051 R)
• M57: 41,942,905 km (0.114 R)
• M58: 44,642,548 km (0.11 R)
• M59: 45,298,684 km (0.074 R)
• M60: 46,068,365 km (0.077 R)
• M61: 46,731,383 km (0.109 R)
• M62: 47,175,240 km (0.113 R)
• M63: 47,732,043 km (0.114 R)
• M64: 48,402,989 km (0.095 R)
• M65: 48,964,430 km (0.074 R)
• M66: 52,378,553 km (0.118 R)
• M67: 52,955,103 km (0.098 R)
• M68: 54,463,648 km (0.076 R)
• M69: 55,164,664 km (0.068 R)
• M70: 55,633,653 km (0.074 R)
• M71: 56,930,218 km (0.096 R)
• M72: 57,522,924 km (0.101 R)
• M73: 59,793,521 km (0.093 R)
• M74: 60,034,224 km (0.052 R)
• M75: 61,971,516 km (0.11 R)
• M76: 63,070,313 km (0.115 R)
• M77: 63,806,334 km (0.032 R)
• M78: 64,915,752 km (0.049 R)
• M79: 65,410,771 km (0.087 R)
• M80: 65,782,971 km (0.069 R)
• M81: 65,907,137 km (0.118 R)
• M82: 68,659,439 km (0.068 R)
• M83: 73,243,417 km (0.087 R)
• M84: 75,052,653 km (0.071 R)
• M85: 75,312,206 km (0.078 R)
• M86: 76,745,652 km (0.119 R)
• M87: 77,269,245 km (0.104 R)
• M88: 79,904,262 km (0.065 R)
• M89: 82,033,488 km (0.084 R)
• M90: 82,434,859 km (0.102 R)
• M91: 82,836,829 km (0.116 R)
• M92: 87,028,262 km (0.108 R)
• M93: 87,710,728 km (0.116 R)
• M94: 90,873,077 km (0.068 R)
• M95: 92,676,928 km (0.12 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 299 - 14,225 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit