🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.73

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.75 AU - 3.85 AU

Year: 2308 Days

Day: 16.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 23.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.3

Radius: 12.3

Gravity: 5.83 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 4.14 AU - 5.5 AU

Year: 4074 Days

Day: 10.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 74,402,469 km

• M1: 160,219 km (0.086 R)
• M2: 339,587 km (0.117 R)
• M3: 481,256 km (0.069 R)
• M4: 582,534 km (0.116 R)
• M5: 1,367,773 km (0.115 R)
• M6: 1,473,838 km (0.073 R)
• M7: 1,809,237 km (0.098 R)
• M8: 1,994,588 km (0.098 R)
• M9: 2,384,740 km (0.064 R)
• M10: 2,818,424 km (0.076 R)
• M11: 2,896,514 km (0.081 R)
• M12: 3,175,364 km (0.069 R)
• M13: 3,421,453 km (0.105 R)
• M14: 3,525,872 km (0.117 R)
• M15: 3,631,339 km (0.114 R)
• M16: 4,130,397 km (0.074 R)
• M17: 4,241,848 km (0.039 R)
• M18: 4,467,740 km (0.096 R)
• M19: 5,026,040 km (0.089 R)
• M20: 5,169,205 km (0.092 R)
• M21: 5,337,802 km (0.059 R)
• M22: 6,132,166 km (0.078 R)
• M23: 6,234,042 km (0.069 R)
• M24: 6,310,786 km (0.087 R)
• M25: 7,528,064 km (0.087 R)
• M26: 7,637,270 km (0.071 R)
• M27: 7,719,549 km (0.119 R)
• M28: 7,996,006 km (0.113 R)
• M29: 8,079,631 km (0.097 R)
• M30: 8,473,672 km (0.038 R)
• M31: 8,730,233 km (0.092 R)
• M32: 9,076,402 km (0.083 R)
• M33: 9,811,975 km (0.04 R)
• M34: 10,658,549 km (0.114 R)
• M35: 10,781,519 km (0.076 R)
• M36: 11,497,195 km (0.044 R)
• M37: 11,654,721 km (0.095 R)
• M38: 12,615,588 km (0.091 R)
• M39: 12,843,576 km (0.078 R)
• M40: 12,941,562 km (0.076 R)
• M41: 13,204,406 km (0.062 R)
• M42: 13,468,895 km (0.099 R)
• M43: 13,936,089 km (0.103 R)
• M44: 14,104,237 km (0.095 R)
• M45: 15,717,799 km (0.05 R)
• M46: 15,927,835 km (0.106 R)
• M47: 16,174,223 km (0.072 R)
• M48: 16,351,047 km (0.118 R)
• M49: 17,533,768 km (0.109 R)
• M50: 17,679,028 km (0.103 R)
• M51: 17,861,238 km (0.105 R)
• M52: 18,264,105 km (0.084 R)
• M53: 18,855,465 km (0.1 R)
• M54: 19,791,948 km (0.062 R)
• M55: 20,399,315 km (0.037 R)
• M56: 20,858,880 km (0.109 R)
• M57: 21,944,512 km (0.096 R)
• M58: 22,061,796 km (0.081 R)
• M59: 22,218,725 km (0.062 R)
• M60: 22,415,296 km (0.092 R)
• M61: 22,494,134 km (0.097 R)
• M62: 22,651,960 km (0.065 R)
• M63: 22,968,958 km (0.114 R)
• M64: 23,088,187 km (0.092 R)
• M65: 23,167,773 km (0.047 R)
• M66: 24,860,174 km (0.106 R)
• M67: 25,269,025 km (0.112 R)
• M68: 25,721,259 km (0.045 R)
• M69: 25,803,838 km (0.105 R)
• M70: 26,550,480 km (0.094 R)
• M71: 26,717,432 km (0.107 R)
• M72: 26,884,682 km (0.119 R)
• M73: 27,136,156 km (0.118 R)
• M74: 28,490,765 km (0.097 R)

Planet 3 - Gas Giant

Semi-Major Axis: 9.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.1

Radius: 8.5

Gravity: 8.96 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 7.14 AU - 11.7 AU

Year: 11131 Days

Day: 14.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 74,402,469 km

• M1: 281,543 km (0.086 R)
• M2: 407,953 km (0.106 R)
• M3: 493,972 km (0.119 R)
• M4: 586,872 km (0.114 R)
• M5: 686,355 km (0.112 R)
• M6: 791,672 km (0.039 R)
• M7: 883,974 km (0.094 R)
• M8: 1,225,057 km (0.109 R)
• M9: 1,311,076 km (0.076 R)
• M10: 1,377,048 km (0.065 R)
• M11: 1,747,902 km (0.08 R)
• M12: 2,020,618 km (0.094 R)
• M13: 2,253,842 km (0.074 R)
• M14: 3,034,294 km (0.101 R)
• M15: 3,241,636 km (0.084 R)
• M16: 3,796,046 km (0.112 R)
• M17: 3,859,475 km (0.108 R)
• M18: 4,116,933 km (0.048 R)
• M19: 4,313,655 km (0.074 R)
• M20: 4,547,027 km (0.062 R)
• M21: 4,750,480 km (0.073 R)
• M22: 5,236,673 km (0.115 R)
• M23: 5,378,492 km (0.112 R)
• M24: 5,557,710 km (0.107 R)
• M25: 6,406,978 km (0.078 R)
• M26: 6,788,751 km (0.09 R)
• M27: 7,099,616 km (0.106 R)
• M28: 7,574,589 km (0.053 R)
• M29: 8,018,895 km (0.034 R)
• M30: 8,513,465 km (0.073 R)
• M31: 8,722,453 km (0.096 R)
• M32: 9,661,928 km (0.069 R)
• M33: 9,879,892 km (0.088 R)
• M34: 10,948,919 km (0.074 R)
• M35: 12,007,473 km (0.103 R)
• M36: 12,572,654 km (0.089 R)
• M37: 12,858,535 km (0.054 R)
• M38: 14,418,991 km (0.101 R)
• M39: 14,718,187 km (0.119 R)
• M40: 15,120,455 km (0.117 R)
• M41: 15,730,366 km (0.101 R)
• M42: 16,764,985 km (0.078 R)
• M43: 17,502,203 km (0.092 R)
• M44: 17,768,038 km (0.104 R)
• M45: 19,887,242 km (0.092 R)
• M46: 20,331,847 km (0.029 R)
• M47: 20,387,647 km (0.075 R)
• M48: 20,723,494 km (0.117 R)
• M49: 21,117,684 km (0.045 R)
• M50: 23,300,168 km (0.11 R)
• M51: 23,533,989 km (0.092 R)
• M52: 23,945,234 km (0.112 R)
• M53: 24,240,390 km (0.12 R)
• M54: 25,013,512 km (0.07 R)
• M55: 26,097,199 km (0.1 R)
• M56: 26,279,260 km (0.053 R)
• M57: 27,627,585 km (0.106 R)
• M58: 28,310,200 km (0.09 R)
• M59: 28,935,669 km (0.096 R)
• M60: 29,439,215 km (0.085 R)
• M61: 29,755,316 km (0.117 R)
• M62: 29,882,175 km (0.034 R)
• M63: 30,072,762 km (0.076 R)
• M64: 30,136,341 km (0.071 R)
• M65: 30,582,742 km (0.046 R)
• M66: 31,353,320 km (0.11 R)
• M67: 32,130,032 km (0.115 R)
• M68: 32,455,707 km (0.119 R)
• M69: 33,110,048 km (0.044 R)
• M70: 33,438,864 km (0.029 R)
• M71: 35,300,310 km (0.114 R)
• M72: 35,838,264 km (0.104 R)
• M73: 36,108,288 km (0.071 R)
• M74: 36,786,416 km (0.068 R)
• M75: 37,536,948 km (0.092 R)
• M76: 37,605,464 km (0.085 R)
• M77: 37,811,311 km (0.057 R)
• M78: 39,819,213 km (0.111 R)
• M79: 41,224,087 km (0.096 R)
• M80: 43,577,411 km (0.109 R)
• M81: 43,721,474 km (0.108 R)
• M82: 44,443,882 km (0.086 R)
• M83: 44,661,397 km (0.074 R)
• M84: 44,879,361 km (0.114 R)
• M85: 45,170,329 km (0.114 R)
• M86: 45,535,049 km (0.081 R)
• M87: 45,754,359 km (0.095 R)
• M88: 46,194,027 km (0.103 R)
• M89: 48,861,058 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 829.6

Radius: 14.9

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 8.36 AU - 13.02 AU

Year: 13457 Days

Day: 10.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (84)

Outer Limit: 74,402,469 km

• M1: 207,193 km (0.086 R)
• M2: 627,264 km (0.116 R)
• M3: 818,001 km (0.077 R)
• M4: 1,030,281 km (0.072 R)
• M5: 1,143,825 km (0.118 R)
• M6: 1,460,674 km (0.074 R)
• M7: 3,062,119 km (0.068 R)
• M8: 3,299,381 km (0.111 R)
• M9: 3,684,745 km (0.072 R)
• M10: 4,614,346 km (0.051 R)
• M11: 4,730,733 km (0.111 R)
• M12: 5,490,840 km (0.08 R)
• M13: 6,418,347 km (0.027 R)
• M14: 6,548,647 km (0.096 R)
• M15: 6,900,501 km (0.102 R)
• M16: 7,258,638 km (0.105 R)
• M17: 7,394,473 km (0.082 R)
• M18: 7,531,206 km (0.075 R)
• M19: 7,993,164 km (0.087 R)
• M20: 8,274,857 km (0.084 R)
• M21: 9,434,091 km (0.094 R)
• M22: 9,582,492 km (0.086 R)
• M23: 9,831,722 km (0.03 R)
• M24: 9,932,102 km (0.1 R)
• M25: 10,235,038 km (0.079 R)
• M26: 10,336,764 km (0.027 R)
• M27: 10,798,573 km (0.105 R)
• M28: 10,954,005 km (0.117 R)
• M29: 11,477,597 km (0.078 R)
• M30: 12,440,559 km (0.114 R)
• M31: 12,658,074 km (0.12 R)
• M32: 13,318,399 km (0.108 R)
• M33: 13,764,799 km (0.097 R)
• M34: 14,102,890 km (0.058 R)
• M35: 14,216,136 km (0.114 R)
• M36: 15,133,470 km (0.119 R)
• M37: 16,188,434 km (0.064 R)
• M38: 19,493,500 km (0.117 R)
• M39: 19,936,908 km (0.05 R)
• M40: 20,064,216 km (0.101 R)
• M41: 20,191,673 km (0.083 R)
• M42: 21,874,500 km (0.099 R)
• M43: 22,137,493 km (0.074 R)
• M44: 23,266,508 km (0.088 R)
• M45: 23,871,781 km (0.101 R)
• M46: 24,892,188 km (0.09 R)
• M47: 25,235,515 km (0.08 R)
• M48: 28,395,321 km (0.109 R)
• M49: 28,970,076 km (0.033 R)
• M50: 29,476,166 km (0.058 R)
• M51: 29,621,276 km (0.118 R)
• M52: 30,058,102 km (0.096 R)
• M53: 30,423,719 km (0.102 R)
• M54: 30,790,832 km (0.057 R)
• M55: 31,455,346 km (0.039 R)
• M56: 31,752,148 km (0.118 R)
• M57: 32,723,487 km (0.08 R)
• M58: 33,552,858 km (0.078 R)
• M59: 33,856,242 km (0.085 R)
• M60: 34,236,669 km (0.106 R)
• M61: 34,541,999 km (0.067 R)
• M62: 35,309,436 km (0.113 R)
• M63: 36,861,215 km (0.1 R)
• M64: 37,017,694 km (0.095 R)
• M65: 37,252,712 km (0.099 R)
• M66: 39,070,925 km (0.097 R)
• M67: 39,310,281 km (0.06 R)
• M68: 39,790,341 km (0.03 R)
• M69: 39,950,710 km (0.094 R)
• M70: 40,191,862 km (0.065 R)
• M71: 40,675,362 km (0.043 R)
• M72: 41,648,496 km (0.101 R)
• M73: 41,892,939 km (0.097 R)
• M74: 44,446,874 km (0.094 R)
• M75: 44,946,979 km (0.034 R)
• M76: 46,712,085 km (0.099 R)
• M77: 46,966,102 km (0.112 R)
• M78: 48,072,229 km (0.113 R)
• M79: 54,797,102 km (0.08 R)
• M80: 55,602,237 km (0.104 R)
• M81: 56,321,055 km (0.092 R)
• M82: 57,586,653 km (0.099 R)
• M83: 58,131,788 km (0.04 R)
• M84: 61,346,347 km (0.044 R)

Planet 5 - Ice Giant

Semi-Major Axis: 11.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 966.6

Radius: 6.6

Gravity: 22.19 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 10.26 AU - 13.08 AU

Year: 15349 Days

Day: 19.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (96)

Outer Limit: 74,402,469 km

• M1: 176,077 km (0.102 R)
• M2: 315,203 km (0.075 R)
• M3: 741,557 km (0.1 R)
• M4: 1,433,896 km (0.036 R)
• M5: 2,240,827 km (0.111 R)
• M6: 2,548,101 km (0.095 R)
• M7: 2,760,380 km (0.118 R)
• M8: 2,941,693 km (0.113 R)
• M9: 4,068,314 km (0.078 R)
• M10: 4,400,421 km (0.054 R)
• M11: 4,442,608 km (0.098 R)
• M12: 4,698,121 km (0.096 R)
• M13: 4,827,822 km (0.03 R)
• M14: 4,871,206 km (0.042 R)
• M15: 5,090,666 km (0.087 R)
• M16: 6,665,932 km (0.031 R)
• M17: 7,007,763 km (0.049 R)
• M18: 7,708,329 km (0.03 R)
• M19: 9,337,450 km (0.083 R)
• M20: 9,446,208 km (0.072 R)
• M21: 10,669,171 km (0.068 R)
• M22: 10,954,005 km (0.086 R)
• M23: 11,068,597 km (0.092 R)
• M24: 11,126,042 km (0.038 R)
• M25: 11,531,153 km (0.114 R)
• M26: 11,706,183 km (0.053 R)
• M27: 11,999,993 km (0.11 R)
• M28: 12,059,084 km (0.033 R)
• M29: 12,118,176 km (0.071 R)
• M30: 13,138,433 km (0.093 R)
• M31: 14,061,302 km (0.032 R)
• M32: 14,248,300 km (0.03 R)
• M33: 14,373,513 km (0.119 R)
• M34: 15,968,825 km (0.107 R)
• M35: 16,754,363 km (0.115 R)
• M36: 17,284,987 km (0.069 R)
• M37: 18,159,087 km (0.108 R)
• M38: 18,294,922 km (0.113 R)
• M39: 18,567,340 km (0.112 R)
• M40: 19,740,486 km (0.049 R)
• M41: 20,441,651 km (0.103 R)
• M42: 20,937,419 km (0.101 R)
• M43: 21,796,260 km (0.069 R)
• M44: 23,032,836 km (0.109 R)
• M45: 24,666,445 km (0.094 R)
• M46: 25,269,773 km (0.1 R)
• M47: 25,877,888 km (0.07 R)
• M48: 26,567,834 km (0.08 R)
• M49: 28,044,066 km (0.069 R)
• M50: 29,069,409 km (0.116 R)
• M51: 30,348,172 km (0.1 R)
• M52: 30,589,922 km (0.117 R)
• M53: 31,075,517 km (0.08 R)
• M54: 31,237,831 km (0.114 R)
• M55: 31,319,212 km (0.119 R)
• M56: 31,726,866 km (0.076 R)
• M57: 32,629,689 km (0.112 R)
• M58: 32,794,845 km (0.119 R)
• M59: 33,374,836 km (0.074 R)
• M60: 33,791,167 km (0.102 R)
• M61: 34,292,918 km (0.056 R)
• M62: 36,753,205 km (0.065 R)
• M63: 37,355,486 km (0.027 R)
• M64: 38,047,974 km (0.09 R)
• M65: 38,308,574 km (0.114 R)
• M66: 38,744,502 km (0.101 R)
• M67: 39,797,372 km (0.098 R)
• M68: 40,238,686 km (0.046 R)
• M69: 41,662,259 km (0.044 R)
• M70: 42,921,275 km (0.1 R)
• M71: 44,101,602 km (0.084 R)
• M72: 44,192,857 km (0.061 R)
• M73: 46,772,672 km (0.112 R)
• M74: 47,518,716 km (0.07 R)
• M75: 47,612,215 km (0.114 R)
• M76: 50,828,719 km (0.088 R)
• M77: 51,595,558 km (0.113 R)
• M78: 51,787,940 km (0.093 R)
• M79: 52,076,814 km (0.079 R)
• M80: 53,335,231 km (0.109 R)
• M81: 54,603,522 km (0.093 R)
• M82: 55,980,421 km (0.05 R)
• M83: 57,767,517 km (0.082 R)
• M84: 61,397,360 km (0.095 R)
• M85: 61,805,163 km (0.102 R)
• M86: 62,009,514 km (0.05 R)
• M87: 62,521,139 km (0.108 R)
• M88: 62,828,862 km (0.108 R)
• M89: 64,478,178 km (0.079 R)
• M90: 64,892,714 km (0.106 R)
• M91: 68,452,096 km (0.07 R)
• M92: 68,769,244 km (0.074 R)
• M93: 69,617,164 km (0.09 R)
• M94: 69,829,743 km (0.096 R)
• M95: 70,362,012 km (0.041 R)
• M96: 71,323,627 km (0.088 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 603.6

Radius: 4.1

Gravity: 35.91 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 12.37 AU - 16.03 AU

Year: 20602 Days

Day: 20.1 Hours

Environment

Temp: -191 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 74,402,469 km

• M1: 104,120 km (0.116 R)
• M2: 161,267 km (0.087 R)
• M3: 293,661 km (0.089 R)
• M4: 437,275 km (0.104 R)
• M5: 476,619 km (0.079 R)
• M6: 558,898 km (0.119 R)
• M7: 907,311 km (0.097 R)
• M8: 1,670,709 km (0.051 R)
• M9: 1,828,834 km (0.07 R)
• M10: 2,228,111 km (0.075 R)
• M11: 2,262,518 km (0.058 R)
• M12: 2,616,916 km (0.092 R)
• M13: 3,180,451 km (0.066 R)
• M14: 3,336,930 km (0.051 R)
• M15: 4,544,335 km (0.088 R)
• M16: 5,125,223 km (0.097 R)
• M17: 5,447,457 km (0.044 R)
• M18: 6,208,760 km (0.093 R)
• M19: 6,601,754 km (0.1 R)
• M20: 6,651,421 km (0.082 R)
• M21: 6,801,168 km (0.117 R)
• M22: 7,308,604 km (0.097 R)
• M23: 8,738,311 km (0.084 R)
• M24: 9,456,680 km (0.116 R)
• M25: 10,773,291 km (0.12 R)
• M26: 12,822,033 km (0.086 R)
• M27: 13,321,242 km (0.084 R)
• M28: 13,447,053 km (0.099 R)
• M29: 14,274,180 km (0.107 R)
• M30: 14,726,414 km (0.12 R)
• M31: 15,183,286 km (0.112 R)
• M32: 15,512,402 km (0.074 R)
• M33: 15,910,631 km (0.071 R)
• M34: 16,177,813 km (0.083 R)
• M35: 16,379,321 km (0.1 R)
• M36: 18,508,997 km (0.106 R)
• M37: 19,356,468 km (0.04 R)
• M38: 19,928,531 km (0.107 R)
• M39: 21,309,020 km (0.111 R)
• M40: 21,677,479 km (0.107 R)
• M41: 22,048,033 km (0.06 R)
• M42: 25,944,908 km (0.088 R)
• M43: 26,812,726 km (0.093 R)
• M44: 27,051,185 km (0.112 R)
• M45: 28,415,068 km (0.102 R)
• M46: 29,064,622 km (0.063 R)
• M47: 29,473,024 km (0.08 R)
• M48: 33,148,345 km (0.094 R)
• M49: 34,261,503 km (0.064 R)
• M50: 34,606,475 km (0.066 R)
• M51: 34,952,495 km (0.096 R)
• M52: 35,039,262 km (0.116 R)
• M53: 35,212,945 km (0.083 R)
• M54: 35,473,844 km (0.036 R)
• M55: 35,822,856 km (0.096 R)
• M56: 35,910,370 km (0.114 R)
• M57: 36,348,543 km (0.027 R)
• M58: 38,118,884 km (0.101 R)
• M59: 38,208,194 km (0.091 R)
• M60: 39,104,584 km (0.098 R)
• M61: 39,284,700 km (0.059 R)
• M62: 39,555,323 km (0.076 R)
• M63: 40,007,856 km (0.064 R)
• M64: 40,371,080 km (0.069 R)
• M65: 40,644,245 km (0.111 R)
• M66: 40,826,755 km (0.068 R)
• M67: 41,375,629 km (0.115 R)
• M68: 42,758,811 km (0.094 R)
• M69: 43,037,213 km (0.115 R)
• M70: 44,814,436 km (0.026 R)
• M71: 45,191,722 km (0.06 R)
• M72: 48,537,029 km (0.076 R)
• M73: 49,410,082 km (0.06 R)
• M74: 49,799,635 km (0.114 R)
• M75: 52,754,642 km (0.111 R)
• M76: 56,476,338 km (0.046 R)
• M77: 56,985,718 km (0.077 R)
• M78: 58,317,439 km (0.115 R)
• M79: 60,698,289 km (0.112 R)
• M80: 63,005,088 km (0.066 R)
• M81: 64,169,259 km (0.114 R)
• M82: 64,807,294 km (0.053 R)
• M83: 65,233,797 km (0.116 R)
• M84: 65,875,273 km (0.113 R)
• M85: 68,353,661 km (0.108 R)
• M86: 69,005,159 km (0.08 R)
• M87: 69,113,917 km (0.109 R)
• M88: 69,877,016 km (0.028 R)
• M89: 71,301,636 km (0.109 R)
• M90: 71,521,695 km (0.074 R)
• M91: 72,293,620 km (0.109 R)
• M92: 72,957,386 km (0.101 R)
• M93: 73,179,090 km (0.099 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 295 - 16,978 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit