🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.55

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.76 AU - 1.16 AU

Year: 335 Days

Day: 36.4 Hours

Environment

Temp: 139 °C

Axial Tilt: 6.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.79 AU - 1.27 AU

Year: 373 Days

Day: 32.9 Hours

Environment

Temp: 103 °C

Axial Tilt: 44.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 42,056,963 km

• M1: 95,144 km (0.072 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.21 AU - 1.25 AU

Year: 486 Days

Day: 33.2 Hours

Environment

Temp: 21 °C

Axial Tilt: 14.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 42,056,963 km

• M1: 78,838 km (0.096 R)
• M2: 99,782 km (0.115 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.74

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.18 AU - 1.3 AU

Year: 492 Days

Day: 18 Hours

Environment

Temp: 23 °C

Axial Tilt: 5.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.3 AU - 1.7 AU

Year: 655 Days

Day: 41.9 Hours

Environment

Temp: -5 °C

Axial Tilt: 20.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Asteroid Belt

Center: 5.58 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 9.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 826.9

Radius: 8.8

Gravity: 10.68 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 7.69 AU - 11.61 AU

Year: 10685 Days

Day: 9.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 42,056,963 km

• M1: 114,143 km (0.038 R)
• M2: 332,556 km (0.112 R)
• M3: 443,109 km (0.081 R)
• M4: 503,696 km (0.059 R)
• M5: 833,859 km (0.075 R)
• M6: 1,012,030 km (0.066 R)
• M7: 1,202,767 km (0.098 R)
• M8: 1,619,247 km (0.115 R)
• M9: 1,920,687 km (0.068 R)
• M10: 1,998,777 km (0.097 R)
• M11: 2,078,064 km (0.063 R)
• M12: 2,691,415 km (0.084 R)
• M13: 2,749,908 km (0.102 R)
• M14: 3,264,076 km (0.094 R)
• M15: 3,389,439 km (0.077 R)
• M16: 3,644,952 km (0.096 R)
• M17: 3,742,340 km (0.116 R)
• M18: 5,014,371 km (0.103 R)
• M19: 5,122,979 km (0.04 R)
• M20: 5,195,833 km (0.086 R)
• M21: 5,866,780 km (0.071 R)
• M22: 6,446,771 km (0.088 R)
• M23: 6,604,596 km (0.115 R)
• M24: 7,166,935 km (0.102 R)
• M25: 7,536,442 km (0.114 R)
• M26: 7,661,057 km (0.11 R)
• M27: 7,912,231 km (0.077 R)
• M28: 7,996,605 km (0.11 R)
• M29: 8,466,043 km (0.087 R)
• M30: 8,944,307 km (0.103 R)
• M31: 9,927,016 km (0.111 R)
• M32: 10,756,386 km (0.08 R)
• M33: 11,226,722 km (0.11 R)
• M34: 11,369,139 km (0.077 R)
• M35: 11,751,960 km (0.103 R)
• M36: 11,993,261 km (0.094 R)
• M37: 12,090,350 km (0.064 R)
• M38: 14,392,662 km (0.044 R)
• M39: 14,962,929 km (0.089 R)
• M40: 15,119,707 km (0.105 R)
• M41: 15,487,718 km (0.039 R)
• M42: 15,699,399 km (0.113 R)
• M43: 16,609,403 km (0.117 R)
• M44: 18,986,962 km (0.108 R)
• M45: 19,100,058 km (0.1 R)
• M46: 19,270,151 km (0.079 R)
• M47: 19,955,758 km (0.099 R)
• M48: 22,358,150 km (0.067 R)
• M49: 24,172,922 km (0.104 R)
• M50: 24,850,301 km (0.087 R)
• M51: 25,909,154 km (0.112 R)
• M52: 27,046,248 km (0.076 R)
• M53: 27,109,977 km (0.094 R)
• M54: 27,429,069 km (0.11 R)
• M55: 27,492,947 km (0.078 R)
• M56: 28,135,171 km (0.049 R)
• M57: 28,652,630 km (0.085 R)
• M58: 29,828,170 km (0.118 R)
• M59: 30,223,557 km (0.057 R)
• M60: 30,488,196 km (0.03 R)
• M61: 30,620,739 km (0.094 R)
• M62: 31,755,290 km (0.109 R)
• M63: 32,226,373 km (0.117 R)
• M64: 32,496,697 km (0.119 R)
• M65: 32,564,315 km (0.118 R)
• M66: 33,585,171 km (0.073 R)
• M67: 34,134,045 km (0.078 R)
• M68: 34,409,455 km (0.083 R)
• M69: 34,547,534 km (0.111 R)
• M70: 37,063,321 km (0.054 R)
• M71: 37,914,982 km (0.104 R)
• M72: 38,200,415 km (0.051 R)
• M73: 38,916,839 km (0.091 R)
• M74: 40,727,272 km (0.119 R)
• M75: 43,979,680 km (0.065 R)
• M76: 45,485,382 km (0.055 R)
• M77: 45,636,925 km (0.035 R)
• M78: 46,168,596 km (0.048 R)
• M79: 46,397,032 km (0.117 R)
• M80: 49,245,375 km (0.106 R)
• M81: 49,790,659 km (0.119 R)
• M82: 50,494,517 km (0.075 R)
• M83: 50,651,445 km (0.075 R)
• M84: 50,965,751 km (0.097 R)
• M85: 51,438,330 km (0.068 R)
• M86: 51,517,168 km (0.107 R)
• M87: 52,070,680 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54.2

Radius: 9.6

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 10.88 AU - 11.42 AU

Year: 13271 Days

Day: 10.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 42,056,963 km

• M1: 121,623 km (0.059 R)
• M2: 302,636 km (0.046 R)
• M3: 558,000 km (0.112 R)
• M4: 1,046,437 km (0.072 R)
• M5: 2,023,760 km (0.1 R)
• M6: 2,216,292 km (0.106 R)
• M7: 2,364,694 km (0.108 R)
• M8: 2,584,902 km (0.102 R)
• M9: 3,192,269 km (0.118 R)
• M10: 3,531,407 km (0.082 R)
• M11: 3,842,721 km (0.104 R)
• M12: 4,122,319 km (0.112 R)
• M13: 4,183,205 km (0.077 R)
• M14: 5,595,559 km (0.119 R)
• M15: 6,493,744 km (0.108 R)
• M16: 7,044,265 km (0.079 R)
• M17: 8,472,775 km (0.082 R)
• M18: 8,810,866 km (0.118 R)
• M19: 9,179,924 km (0.113 R)
• M20: 10,097,258 km (0.058 R)
• M21: 10,262,264 km (0.1 R)
• M22: 10,790,345 km (0.073 R)
• M23: 11,213,557 km (0.106 R)
• M24: 11,757,495 km (0.094 R)
• M25: 12,486,336 km (0.083 R)
• M26: 12,692,931 km (0.061 R)
• M27: 13,229,688 km (0.081 R)
• M28: 13,440,471 km (0.088 R)
• M29: 14,541,661 km (0.081 R)
• M30: 15,103,102 km (0.097 R)
• M31: 15,894,624 km (0.1 R)
• M32: 16,311,703 km (0.118 R)
• M33: 16,764,685 km (0.109 R)
• M34: 16,927,448 km (0.056 R)
• M35: 17,189,095 km (0.117 R)
• M36: 18,685,522 km (0.111 R)
• M37: 18,989,804 km (0.095 R)
• M38: 19,706,079 km (0.092 R)
• M39: 20,605,162 km (0.03 R)
• M40: 20,674,875 km (0.093 R)
• M41: 21,659,229 km (0.107 R)
• M42: 22,838,808 km (0.104 R)
• M43: 24,591,646 km (0.053 R)
• M44: 24,702,648 km (0.034 R)

Planet 8 - Gas Giant

Semi-Major Axis: 12.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 611.1

Radius: 10.3

Gravity: 5.76 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 10.31 AU - 14.71 AU

Year: 15772 Days

Day: 13.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (92)

Outer Limit: 42,056,963 km

• M1: 210,185 km (0.096 R)
• M2: 317,895 km (0.082 R)
• M3: 646,113 km (0.093 R)
• M4: 743,651 km (0.077 R)
• M5: 867,967 km (0.112 R)
• M6: 1,091,316 km (0.043 R)
• M7: 1,513,482 km (0.109 R)
• M8: 1,593,217 km (0.089 R)
• M9: 2,689,321 km (0.057 R)
• M10: 2,786,859 km (0.068 R)
• M11: 3,086,354 km (0.062 R)
• M12: 3,825,517 km (0.03 R)
• M13: 4,734,922 km (0.027 R)
• M14: 6,391,569 km (0.08 R)
• M15: 6,965,426 km (0.099 R)
• M16: 7,418,259 km (0.098 R)
• M17: 8,495,513 km (0.098 R)
• M18: 9,871,963 km (0.114 R)
• M19: 11,106,296 km (0.118 R)
• M20: 11,956,011 km (0.098 R)
• M21: 12,225,886 km (0.11 R)
• M22: 13,436,881 km (0.119 R)
• M23: 13,999,967 km (0.073 R)
• M24: 15,676,361 km (0.089 R)
• M25: 15,912,426 km (0.03 R)
• M26: 16,508,125 km (0.036 R)
• M27: 16,688,241 km (0.067 R)
• M28: 16,989,830 km (0.096 R)
• M29: 19,277,481 km (0.077 R)
• M30: 19,594,030 km (0.096 R)
• M31: 20,039,981 km (0.113 R)
• M32: 20,425,046 km (0.068 R)
• M33: 20,618,327 km (0.066 R)
• M34: 21,006,982 km (0.05 R)
• M35: 21,660,126 km (0.071 R)
• M36: 21,791,623 km (0.109 R)
• M37: 22,320,002 km (0.105 R)
• M38: 22,585,688 km (0.107 R)
• M39: 22,718,980 km (0.119 R)
• M40: 23,456,647 km (0.03 R)
• M41: 24,680,806 km (0.088 R)
• M42: 24,955,618 km (0.108 R)
• M43: 26,485,405 km (0.03 R)
• M44: 26,766,799 km (0.04 R)
• M45: 27,119,850 km (0.063 R)
• M46: 27,616,814 km (0.065 R)
• M47: 28,260,235 km (0.054 R)
• M48: 28,836,336 km (0.112 R)
• M49: 29,053,402 km (0.105 R)
• M50: 29,634,740 km (0.055 R)
• M51: 31,105,137 km (0.073 R)
• M52: 31,253,389 km (0.116 R)
• M53: 31,625,289 km (0.066 R)
• M54: 31,998,536 km (0.053 R)
• M55: 32,523,774 km (0.1 R)
• M56: 32,599,022 km (0.054 R)
• M57: 32,674,269 km (0.12 R)
• M58: 34,192,688 km (0.119 R)
• M59: 34,652,552 km (0.117 R)
• M60: 36,200,590 km (0.108 R)
• M61: 38,326,077 km (0.112 R)
• M62: 38,405,513 km (0.092 R)
• M63: 38,963,663 km (0.101 R)
• M64: 39,203,618 km (0.084 R)
• M65: 39,283,653 km (0.115 R)
• M66: 39,765,358 km (0.102 R)
• M67: 39,926,475 km (0.094 R)
• M68: 40,006,959 km (0.112 R)
• M69: 42,614,449 km (0.041 R)
• M70: 44,105,043 km (0.064 R)
• M71: 44,689,372 km (0.064 R)
• M72: 46,712,234 km (0.059 R)
• M73: 46,967,149 km (0.091 R)
• M74: 47,734,736 km (0.11 R)
• M75: 48,077,165 km (0.089 R)
• M76: 48,163,034 km (0.054 R)
• M77: 48,506,511 km (0.087 R)
• M78: 48,678,549 km (0.079 R)
• M79: 49,023,222 km (0.077 R)
• M80: 51,021,251 km (0.106 R)
• M81: 51,898,194 km (0.074 R)
• M82: 52,514,986 km (0.081 R)
• M83: 52,780,074 km (0.035 R)
• M84: 53,489,167 km (0.117 R)
• M85: 55,365,574 km (0.119 R)
• M86: 55,905,622 km (0.101 R)
• M87: 56,266,751 km (0.093 R)
• M88: 56,537,972 km (0.088 R)
• M89: 57,081,760 km (0.085 R)
• M90: 58,723,747 km (0.106 R)
• M91: 61,494,748 km (0.092 R)
• M92: 62,053,945 km (0.032 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 293.4

Radius: 3.4

Gravity: 25.38 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 15.29 AU - 18.27 AU

Year: 24501 Days

Day: 15.2 Hours

Environment

Temp: -201 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (99)

Outer Limit: 42,056,963 km

• M1: 80,783 km (0.084 R)
• M2: 128,505 km (0.054 R)
• M3: 689,796 km (0.088 R)
• M4: 1,079,947 km (0.116 R)
• M5: 1,527,245 km (0.09 R)
• M6: 1,726,359 km (0.118 R)
• M7: 2,668,527 km (0.118 R)
• M8: 2,942,441 km (0.08 R)
• M9: 3,118,218 km (0.057 R)
• M10: 3,740,994 km (0.12 R)
• M11: 3,892,836 km (0.088 R)
• M12: 4,046,922 km (0.115 R)
• M13: 4,163,758 km (0.087 R)
• M14: 4,642,022 km (0.06 R)
• M15: 5,306,536 km (0.108 R)
• M16: 6,312,581 km (0.114 R)
• M17: 6,402,789 km (0.114 R)
• M18: 6,538,923 km (0.113 R)
• M19: 7,092,884 km (0.087 R)
• M20: 7,854,786 km (0.041 R)
• M21: 8,692,235 km (0.063 R)
• M22: 9,147,012 km (0.108 R)
• M23: 11,041,819 km (0.065 R)
• M24: 11,921,604 km (0.119 R)
• M25: 12,144,954 km (0.084 R)
• M26: 12,595,991 km (0.086 R)
• M27: 13,340,540 km (0.113 R)
• M28: 13,747,296 km (0.046 R)
• M29: 14,335,515 km (0.112 R)
• M30: 14,692,306 km (0.054 R)
• M31: 15,232,953 km (0.1 R)
• M32: 15,780,182 km (0.088 R)
• M33: 16,644,109 km (0.043 R)
• M34: 17,968,499 km (0.085 R)
• M35: 18,740,424 km (0.056 R)
• M36: 19,326,399 km (0.092 R)
• M37: 20,449,580 km (0.103 R)
• M38: 20,850,951 km (0.109 R)
• M39: 21,255,015 km (0.074 R)
• M40: 21,729,689 km (0.107 R)
• M41: 21,865,973 km (0.088 R)
• M42: 21,934,189 km (0.068 R)
• M43: 22,002,556 km (0.105 R)
• M44: 22,413,800 km (0.103 R)
• M45: 22,758,474 km (0.097 R)
• M46: 24,649,989 km (0.104 R)
• M47: 25,148,599 km (0.101 R)
• M48: 25,578,543 km (0.075 R)
• M49: 25,650,350 km (0.092 R)
• M50: 26,228,097 km (0.078 R)
• M51: 26,591,171 km (0.111 R)
• M52: 26,664,025 km (0.098 R)
• M53: 27,396,008 km (0.094 R)
• M54: 28,208,922 km (0.094 R)
• M55: 29,330,009 km (0.109 R)
• M56: 29,480,504 km (0.034 R)
• M57: 29,782,542 km (0.078 R)
• M58: 30,237,320 km (0.073 R)
• M59: 30,618,047 km (0.046 R)
• M60: 30,770,786 km (0.074 R)
• M61: 31,384,287 km (0.082 R)
• M62: 31,538,373 km (0.101 R)
• M63: 32,079,468 km (0.114 R)
• M64: 32,467,675 km (0.116 R)
• M65: 33,642,018 km (0.086 R)
• M66: 34,909,860 km (0.103 R)
• M67: 36,516,541 km (0.058 R)
• M68: 37,737,260 km (0.12 R)
• M69: 38,065,029 km (0.113 R)
• M70: 39,718,085 km (0.104 R)
• M71: 41,647,748 km (0.111 R)
• M72: 41,732,420 km (0.116 R)
• M73: 42,326,025 km (0.115 R)
• M74: 42,581,388 km (0.084 R)
• M75: 43,350,471 km (0.089 R)
• M76: 46,384,316 km (0.092 R)
• M77: 46,472,130 km (0.079 R)
• M78: 46,823,386 km (0.079 R)
• M79: 47,175,539 km (0.052 R)
• M80: 47,705,415 km (0.111 R)
• M81: 48,059,812 km (0.057 R)
• M82: 48,503,968 km (0.065 R)
• M83: 48,592,979 km (0.112 R)
• M84: 48,860,310 km (0.07 R)
• M85: 49,934,572 km (0.11 R)
• M86: 50,926,107 km (0.04 R)
• M87: 51,288,284 km (0.065 R)
• M88: 54,123,911 km (0.108 R)
• M89: 54,400,966 km (0.071 R)
• M90: 54,771,221 km (0.089 R)
• M91: 54,956,573 km (0.04 R)
• M92: 57,951,522 km (0.109 R)
• M93: 58,045,919 km (0.109 R)
• M94: 60,807,047 km (0.03 R)
• M95: 62,348,503 km (0.025 R)
• M96: 62,735,961 km (0.089 R)
• M97: 62,832,901 km (0.114 R)
• M98: 63,707,899 km (0.086 R)
• M99: 64,195,737 km (0.095 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 50.5

Radius: 3.1

Gravity: 5.25 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 18.06 AU - 20.58 AU

Year: 30270 Days

Day: 16.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 42,056,963 km

• M1: 100,829 km (0.094 R)
• M2: 194,776 km (0.055 R)
• M3: 387,309 km (0.114 R)
• M4: 580,589 km (0.112 R)
• M5: 687,253 km (0.056 R)
• M6: 767,287 km (0.107 R)
• M7: 850,314 km (0.115 R)
• M8: 1,098,198 km (0.12 R)
• M9: 1,135,448 km (0.047 R)
• M10: 1,468,154 km (0.105 R)
• M11: 1,592,469 km (0.088 R)
• M12: 1,807,142 km (0.041 R)
• M13: 2,099,606 km (0.058 R)
• M14: 2,239,630 km (0.036 R)
• M15: 2,382,645 km (0.092 R)
• M16: 3,167,436 km (0.107 R)
• M17: 3,220,693 km (0.103 R)
• M18: 4,227,486 km (0.118 R)
• M19: 4,855,947 km (0.11 R)
• M20: 6,064,997 km (0.068 R)
• M21: 6,600,557 km (0.096 R)
• M22: 7,290,951 km (0.085 R)
• M23: 7,608,996 km (0.072 R)
• M24: 10,588,836 km (0.102 R)
• M25: 10,628,630 km (0.078 R)
• M26: 11,190,818 km (0.102 R)
• M27: 11,721,592 km (0.073 R)
• M28: 12,010,615 km (0.1 R)
• M29: 12,638,178 km (0.039 R)
• M30: 13,620,737 km (0.083 R)
• M31: 13,881,186 km (0.059 R)
• M32: 14,671,961 km (0.085 R)
• M33: 14,716,391 km (0.118 R)
• M34: 14,938,843 km (0.098 R)
• M35: 15,703,737 km (0.096 R)
• M36: 15,794,543 km (0.097 R)
• M37: 16,251,116 km (0.086 R)
• M38: 16,342,969 km (0.096 R)
• M39: 17,411,696 km (0.082 R)
• M40: 19,664,640 km (0.061 R)
• M41: 20,204,988 km (0.093 R)
• M42: 21,099,732 km (0.113 R)
• M43: 21,602,381 km (0.102 R)
• M44: 23,133,815 km (0.094 R)
• M45: 25,869,960 km (0.109 R)
• M46: 27,713,305 km (0.108 R)
• M47: 28,373,929 km (0.067 R)
• M48: 28,761,687 km (0.084 R)
• M49: 30,217,274 km (0.104 R)
• M50: 30,783,502 km (0.114 R)
• M51: 31,582,055 km (0.047 R)
• M52: 32,329,596 km (0.1 R)
• M53: 33,199,507 km (0.117 R)
• M54: 33,842,180 km (0.119 R)
• M55: 34,666,165 km (0.103 R)
• M56: 34,902,829 km (0.073 R)
• M57: 35,914,559 km (0.119 R)
• M58: 36,694,563 km (0.086 R)
• M59: 36,754,850 km (0.106 R)
• M60: 36,875,426 km (0.109 R)
• M61: 40,553,440 km (0.091 R)
• M62: 40,927,584 km (0.089 R)

Kuiper Belt

Range: 30.8 - 46.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 344 - 19,250 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit