🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 626.7

Radius: 9.5

Gravity: 6.94 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 2.42 AU - 2.42 AU

Year: 2431 Days

Day: 10.4 Hours

Environment

Temp: -204 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (71)

Outer Limit: 81,600,369 km

• M1: 133,591 km (0.077 R)
• M2: 202,556 km (0.089 R)
• M3: 540,946 km (0.059 R)
• M4: 628,760 km (0.093 R)
• M5: 722,109 km (0.083 R)
• M6: 904,319 km (0.096 R)
• M7: 1,206,357 km (0.055 R)
• M8: 1,302,997 km (0.095 R)
• M9: 1,425,069 km (0.041 R)
• M10: 1,527,693 km (0.056 R)
• M11: 1,633,010 km (0.069 R)
• M12: 1,692,550 km (0.118 R)
• M13: 1,789,340 km (0.099 R)
• M14: 2,052,632 km (0.1 R)
• M15: 2,315,027 km (0.12 R)
• M16: 2,395,959 km (0.118 R)
• M17: 2,644,292 km (0.039 R)
• M18: 2,728,964 km (0.054 R)
• M19: 3,091,590 km (0.077 R)
• M20: 3,438,806 km (0.091 R)
• M21: 3,782,732 km (0.114 R)
• M22: 3,878,474 km (0.082 R)
• M23: 3,958,808 km (0.027 R)
• M24: 4,741,804 km (0.077 R)
• M25: 5,054,164 km (0.104 R)
• M26: 5,266,144 km (0.113 R)
• M27: 6,350,878 km (0.058 R)
• M28: 6,714,700 km (0.12 R)
• M29: 6,869,833 km (0.086 R)
• M30: 7,085,254 km (0.091 R)
• M31: 7,282,873 km (0.113 R)
• M32: 7,422,448 km (0.114 R)
• M33: 7,482,586 km (0.11 R)
• M34: 7,765,027 km (0.092 R)
• M35: 7,989,424 km (0.079 R)
• M36: 8,050,909 km (0.085 R)
• M37: 8,319,586 km (0.101 R)
• M38: 8,507,332 km (0.037 R)
• M39: 8,675,330 km (0.1 R)
• M40: 8,738,760 km (0.114 R)
• M41: 8,802,189 km (0.11 R)
• M42: 8,929,497 km (0.065 R)
• M43: 9,186,207 km (0.077 R)
• M44: 9,293,917 km (0.105 R)
• M45: 9,619,293 km (0.077 R)
• M46: 9,904,426 km (0.069 R)
• M47: 10,192,402 km (0.11 R)
• M48: 10,259,272 km (0.101 R)
• M49: 10,348,582 km (0.071 R)
• M50: 10,505,510 km (0.086 R)
• M51: 10,776,582 km (0.076 R)
• M52: 12,000,741 km (0.107 R)
• M53: 12,094,988 km (0.088 R)
• M54: 12,284,080 km (0.106 R)
• M55: 12,378,925 km (0.119 R)
• M56: 12,953,680 km (0.075 R)
• M57: 13,195,729 km (0.044 R)
• M58: 13,390,356 km (0.107 R)
• M59: 13,463,659 km (0.056 R)
• M60: 13,586,030 km (0.086 R)
• M61: 13,807,285 km (0.1 R)
• M62: 13,955,387 km (0.118 R)
• M63: 14,603,595 km (0.096 R)
• M64: 15,389,283 km (0.073 R)
• M65: 15,517,189 km (0.083 R)
• M66: 15,697,005 km (0.074 R)
• M67: 15,851,690 km (0.101 R)
• M68: 16,188,584 km (0.094 R)
• M69: 16,266,674 km (0.109 R)
• M70: 16,764,087 km (0.118 R)
• M71: 17,693,389 km (0.092 R)

Planet 2 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.9

Radius: 11.5

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 2.29 AU - 3.07 AU

Year: 2833 Days

Day: 9.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (66)

Outer Limit: 81,600,369 km

• M1: 163,810 km (0.098 R)
• M2: 237,711 km (0.074 R)
• M3: 314,305 km (0.109 R)
• M4: 527,632 km (0.07 R)
• M5: 665,262 km (0.063 R)
• M6: 791,522 km (0.097 R)
• M7: 866,471 km (0.047 R)
• M8: 944,112 km (0.098 R)
• M9: 1,144,573 km (0.116 R)
• M10: 1,420,432 km (0.115 R)
• M11: 1,773,034 km (0.082 R)
• M12: 1,885,382 km (0.076 R)
• M13: 2,237,236 km (0.065 R)
• M14: 2,445,925 km (0.081 R)
• M15: 2,661,197 km (0.053 R)
• M16: 2,816,928 km (0.099 R)
• M17: 3,316,286 km (0.12 R)
• M18: 3,427,886 km (0.066 R)
• M19: 3,583,617 km (0.088 R)
• M20: 3,828,808 km (0.041 R)
• M21: 4,005,184 km (0.101 R)
• M22: 4,290,018 km (0.041 R)
• M23: 4,442,758 km (0.105 R)
• M24: 4,895,590 km (0.094 R)
• M25: 5,249,240 km (0.046 R)
• M26: 5,379,839 km (0.057 R)
• M27: 5,561,301 km (0.112 R)
• M28: 5,644,477 km (0.112 R)
• M29: 5,795,122 km (0.089 R)
• M30: 5,964,168 km (0.11 R)
• M31: 6,255,285 km (0.097 R)
• M32: 6,533,687 km (0.117 R)
• M33: 6,621,501 km (0.052 R)
• M34: 6,887,336 km (0.098 R)
• M35: 7,084,506 km (0.067 R)
• M36: 7,539,733 km (0.051 R)
• M37: 7,613,484 km (0.11 R)
• M38: 7,705,936 km (0.115 R)
• M39: 7,892,036 km (0.105 R)
• M40: 8,306,871 km (0.08 R)
• M41: 8,670,842 km (0.111 R)
• M42: 8,748,035 km (0.11 R)
• M43: 9,098,692 km (0.104 R)
• M44: 9,374,700 km (0.048 R)
• M45: 9,493,780 km (0.08 R)
• M46: 9,713,539 km (0.09 R)
• M47: 10,137,649 km (0.118 R)
• M48: 10,609,182 km (0.101 R)
• M49: 10,962,233 km (0.119 R)
• M50: 11,171,819 km (0.059 R)
• M51: 11,573,490 km (0.118 R)
• M52: 12,023,181 km (0.097 R)
• M53: 12,304,425 km (0.088 R)
• M54: 12,478,557 km (0.116 R)
• M55: 12,609,754 km (0.095 R)
• M56: 12,785,232 km (0.1 R)
• M57: 13,094,601 km (0.104 R)
• M58: 13,361,633 km (0.06 R)
• M59: 13,969,000 km (0.065 R)
• M60: 14,082,545 km (0.106 R)
• M61: 14,310,383 km (0.08 R)
• M62: 14,631,420 km (0.059 R)
• M63: 14,885,437 km (0.072 R)
• M64: 14,978,188 km (0.118 R)
• M65: 15,304,161 km (0.111 R)
• M66: 15,562,068 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538

Radius: 12.7

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 2.94 AU - 4.74 AU

Year: 4859 Days

Day: 15 Hours

Environment

Temp: -220 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 81,600,369 km

• M1: 359,184 km (0.092 R)
• M2: 682,914 km (0.102 R)
• M3: 784,342 km (0.093 R)
• M4: 891,603 km (0.089 R)
• M5: 1,190,201 km (0.106 R)
• M6: 1,273,527 km (0.096 R)
• M7: 1,416,991 km (0.105 R)
• M8: 2,062,655 km (0.084 R)
• M9: 2,198,640 km (0.092 R)
• M10: 2,606,743 km (0.108 R)
• M11: 2,810,495 km (0.063 R)
• M12: 3,058,080 km (0.073 R)
• M13: 3,194,513 km (0.115 R)
• M14: 3,636,575 km (0.073 R)
• M15: 3,781,385 km (0.092 R)
• M16: 4,184,103 km (0.095 R)
• M17: 4,270,720 km (0.054 R)
• M18: 4,534,162 km (0.079 R)
• M19: 4,690,192 km (0.039 R)
• M20: 5,030,976 km (0.108 R)
• M21: 5,881,440 km (0.032 R)
• M22: 6,801,766 km (0.113 R)
• M23: 7,265,819 km (0.049 R)
• M24: 7,766,822 km (0.087 R)
• M25: 8,008,124 km (0.059 R)
• M26: 8,306,272 km (0.103 R)
• M27: 8,415,778 km (0.107 R)
• M28: 8,580,635 km (0.05 R)
• M29: 8,663,512 km (0.056 R)
• M30: 8,969,739 km (0.068 R)
• M31: 9,650,409 km (0.1 R)
• M32: 9,736,577 km (0.068 R)
• M33: 10,435,947 km (0.076 R)
• M34: 11,151,474 km (0.095 R)
• M35: 11,515,146 km (0.073 R)
• M36: 11,729,221 km (0.118 R)
• M37: 12,316,692 km (0.084 R)
• M38: 12,787,327 km (0.116 R)
• M39: 13,168,053 km (0.12 R)
• M40: 13,424,015 km (0.092 R)
• M41: 14,267,149 km (0.116 R)
• M42: 14,596,115 km (0.095 R)
• M43: 14,794,631 km (0.095 R)
• M44: 15,160,996 km (0.056 R)
• M45: 16,038,687 km (0.092 R)
• M46: 16,621,520 km (0.118 R)
• M47: 17,351,109 km (0.058 R)
• M48: 17,596,599 km (0.116 R)
• M49: 18,091,170 km (0.062 R)
• M50: 18,447,213 km (0.118 R)
• M51: 18,554,474 km (0.111 R)
• M52: 19,093,924 km (0.106 R)
• M53: 19,383,845 km (0.104 R)
• M54: 19,565,756 km (0.116 R)
• M55: 20,114,780 km (0.114 R)
• M56: 20,335,886 km (0.061 R)
• M57: 21,265,637 km (0.048 R)
• M58: 21,566,029 km (0.046 R)
• M59: 21,679,125 km (0.097 R)
• M60: 21,905,766 km (0.041 R)
• M61: 22,095,306 km (0.057 R)
• M62: 22,247,298 km (0.092 R)
• M63: 22,361,441 km (0.094 R)
• M64: 22,590,475 km (0.118 R)
• M65: 22,781,961 km (0.093 R)
• M66: 23,630,779 km (0.101 R)
• M67: 24,020,033 km (0.033 R)
• M68: 24,254,602 km (0.096 R)
• M69: 24,686,641 km (0.112 R)
• M70: 24,844,466 km (0.093 R)
• M71: 25,081,729 km (0.114 R)
• M72: 25,240,302 km (0.103 R)
• M73: 25,558,497 km (0.12 R)
• M74: 25,877,888 km (0.107 R)
• M75: 25,998,016 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 17.1

Radius: 13.7

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 5.16 AU - 5.28 AU

Year: 7701 Days

Day: 7.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 81,600,369 km

• M1: 178,620 km (0.096 R)
• M2: 315,951 km (0.08 R)
• M3: 447,746 km (0.096 R)
• M4: 784,491 km (0.086 R)
• M5: 905,815 km (0.102 R)
• M6: 1,138,589 km (0.085 R)
• M7: 1,270,684 km (0.053 R)
• M8: 2,162,736 km (0.062 R)
• M9: 2,260,125 km (0.108 R)
• M10: 2,409,274 km (0.081 R)
• M11: 2,887,389 km (0.074 R)
• M12: 3,006,169 km (0.095 R)
• M13: 3,159,806 km (0.116 R)
• M14: 3,316,286 km (0.105 R)
• M15: 3,800,833 km (0.091 R)
• M16: 4,345,220 km (0.059 R)
• M17: 5,400,184 km (0.117 R)
• M18: 5,507,296 km (0.103 R)
• M19: 5,860,197 km (0.094 R)
• M20: 6,095,066 km (0.061 R)
• M21: 6,206,666 km (0.118 R)
• M22: 6,417,898 km (0.083 R)
• M23: 6,545,655 km (0.062 R)
• M24: 6,688,670 km (0.109 R)
• M25: 6,803,861 km (0.08 R)
• M26: 6,905,288 km (0.112 R)
• M27: 7,992,117 km (0.071 R)
• M28: 8,175,972 km (0.057 R)
• M29: 8,314,799 km (0.027 R)
• M30: 8,578,989 km (0.112 R)
• M31: 8,798,748 km (0.096 R)
• M32: 10,422,334 km (0.111 R)
• M33: 10,995,144 km (0.119 R)
• M34: 11,114,523 km (0.109 R)
• M35: 11,717,104 km (0.086 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 881.8

Radius: 6.9

Gravity: 18.52 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 7.11 AU - 11.17 AU

Year: 17842 Days

Day: 21.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 81,600,369 km

• M1: 140,622 km (0.099 R)
• M2: 841,787 km (0.071 R)
• M3: 1,384,977 km (0.061 R)
• M4: 1,504,805 km (0.081 R)
• M5: 1,984,565 km (0.052 R)
• M6: 2,581,760 km (0.11 R)
• M7: 3,112,832 km (0.046 R)
• M8: 3,471,867 km (0.101 R)
• M9: 4,316,198 km (0.08 R)
• M10: 4,360,030 km (0.086 R)
• M11: 4,671,044 km (0.104 R)
• M12: 4,852,057 km (0.119 R)
• M13: 5,174,441 km (0.117 R)
• M14: 6,381,247 km (0.067 R)
• M15: 7,564,716 km (0.104 R)
• M16: 7,938,112 km (0.042 R)
• M17: 8,372,245 km (0.108 R)
• M18: 9,377,243 km (0.102 R)
• M19: 9,548,383 km (0.083 R)
• M20: 10,184,773 km (0.092 R)
• M21: 10,243,415 km (0.099 R)
• M22: 10,360,849 km (0.102 R)
• M23: 11,437,655 km (0.073 R)
• M24: 13,182,415 km (0.029 R)
• M25: 13,502,554 km (0.086 R)
• M26: 13,955,088 km (0.076 R)
• M27: 14,085,388 km (0.099 R)
• M28: 14,742,571 km (0.046 R)
• M29: 17,259,705 km (0.099 R)
• M30: 18,175,244 km (0.105 R)
• M31: 18,603,094 km (0.081 R)
• M32: 19,906,540 km (0.117 R)
• M33: 20,273,803 km (0.071 R)
• M34: 20,717,510 km (0.086 R)
• M35: 20,866,061 km (0.109 R)
• M36: 22,676,793 km (0.067 R)
• M37: 24,852,096 km (0.107 R)
• M38: 25,485,792 km (0.068 R)
• M39: 27,011,990 km (0.053 R)
• M40: 27,255,685 km (0.036 R)
• M41: 27,581,659 km (0.076 R)
• M42: 29,564,878 km (0.112 R)
• M43: 29,732,278 km (0.099 R)
• M44: 31,337,612 km (0.095 R)
• M45: 32,107,742 km (0.102 R)
• M46: 33,231,222 km (0.1 R)
• M47: 33,929,096 km (0.079 R)
• M48: 35,516,629 km (0.045 R)
• M49: 36,409,130 km (0.081 R)
• M50: 37,580,332 km (0.097 R)
• M51: 37,670,988 km (0.027 R)
• M52: 39,038,612 km (0.114 R)
• M53: 39,498,176 km (0.115 R)
• M54: 42,387,061 km (0.043 R)
• M55: 43,523,406 km (0.097 R)
• M56: 43,618,550 km (0.118 R)
• M57: 44,095,468 km (0.117 R)
• M58: 44,765,816 km (0.027 R)
• M59: 44,958,050 km (0.112 R)
• M60: 47,089,969 km (0.052 R)
• M61: 47,579,004 km (0.064 R)
• M62: 49,751,165 km (0.07 R)
• M63: 51,250,435 km (0.11 R)
• M64: 51,552,174 km (0.111 R)
• M65: 52,764,665 km (0.115 R)
• M66: 53,680,204 km (0.104 R)
• M67: 55,217,771 km (0.108 R)
• M68: 55,733,584 km (0.059 R)
• M69: 56,873,670 km (0.117 R)
• M70: 57,290,300 km (0.064 R)
• M71: 57,603,408 km (0.073 R)
• M72: 57,916,965 km (0.091 R)
• M73: 58,335,989 km (0.037 R)
• M74: 59,071,861 km (0.079 R)
• M75: 59,282,644 km (0.068 R)
• M76: 60,446,366 km (0.095 R)
• M77: 61,084,401 km (0.049 R)
• M78: 63,550,671 km (0.096 R)
• M79: 63,874,700 km (0.059 R)
• M80: 64,850,228 km (0.047 R)
• M81: 65,394,316 km (0.067 R)
• M82: 66,815,944 km (0.078 R)
• M83: 67,255,463 km (0.094 R)
• M84: 67,696,028 km (0.099 R)
• M85: 68,026,939 km (0.107 R)
• M86: 70,247,121 km (0.081 R)
• M87: 72,378,292 km (0.064 R)
• M88: 72,716,683 km (0.114 R)
• M89: 73,055,671 km (0.04 R)
• M90: 73,508,355 km (0.104 R)
• M91: 74,303,018 km (0.056 R)
• M92: 75,557,247 km (0.045 R)
• M93: 75,900,574 km (0.11 R)
• M94: 76,359,241 km (0.102 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 671.1

Radius: 4.5

Gravity: 33.14 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 10.61 AU - 10.69 AU

Year: 22441 Days

Day: 18.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (94)

Outer Limit: 81,600,369 km

• M1: 84,822 km (0.061 R)
• M2: 191,036 km (0.108 R)
• M3: 304,132 km (0.107 R)
• M4: 438,023 km (0.062 R)
• M5: 479,611 km (0.043 R)
• M6: 834,307 km (0.081 R)
• M7: 1,107,772 km (0.027 R)
• M8: 1,136,645 km (0.113 R)
• M9: 1,501,963 km (0.09 R)
• M10: 1,832,275 km (0.115 R)
• M11: 2,148,525 km (0.063 R)
• M12: 2,331,483 km (0.092 R)
• M13: 2,751,554 km (0.113 R)
• M14: 2,830,392 km (0.119 R)
• M15: 3,319,427 km (0.073 R)
• M16: 3,488,174 km (0.061 R)
• M17: 3,530,809 km (0.062 R)
• M18: 4,145,806 km (0.034 R)
• M19: 4,236,313 km (0.073 R)
• M20: 5,571,174 km (0.11 R)
• M21: 5,671,106 km (0.069 R)
• M22: 6,387,380 km (0.097 R)
• M23: 6,703,032 km (0.102 R)
• M24: 6,969,914 km (0.083 R)
• M25: 7,131,779 km (0.118 R)
• M26: 8,643,167 km (0.093 R)
• M27: 8,758,955 km (0.093 R)
• M28: 9,944,818 km (0.09 R)
• M29: 10,005,405 km (0.093 R)
• M30: 10,433,105 km (0.073 R)
• M31: 10,742,174 km (0.106 R)
• M32: 11,623,605 km (0.053 R)
• M33: 11,687,483 km (0.11 R)
• M34: 11,751,511 km (0.095 R)
• M35: 12,462,849 km (0.09 R)
• M36: 12,790,768 km (0.112 R)
• M37: 12,988,835 km (0.113 R)
• M38: 13,121,528 km (0.118 R)
• M39: 13,656,490 km (0.12 R)
• M40: 14,472,397 km (0.109 R)
• M41: 18,259,916 km (0.069 R)
• M42: 18,557,466 km (0.115 R)
• M43: 19,687,828 km (0.049 R)
• M44: 22,808,888 km (0.037 R)
• M45: 23,451,261 km (0.079 R)
• M46: 23,612,827 km (0.09 R)
• M47: 24,507,722 km (0.109 R)
• M48: 26,247,096 km (0.057 R)
• M49: 26,751,241 km (0.071 R)
• M50: 27,258,677 km (0.047 R)
• M51: 27,428,470 km (0.067 R)
• M52: 28,799,834 km (0.057 R)
• M53: 29,059,386 km (0.12 R)
• M54: 30,017,860 km (0.07 R)
• M55: 30,105,524 km (0.079 R)
• M56: 30,545,043 km (0.067 R)
• M57: 31,341,651 km (0.103 R)
• M58: 31,430,513 km (0.044 R)
• M59: 32,324,360 km (0.026 R)
• M60: 34,045,483 km (0.112 R)
• M61: 34,228,442 km (0.099 R)
• M62: 35,982,177 km (0.066 R)
• M63: 36,823,067 km (0.086 R)
• M64: 39,672,607 km (0.102 R)
• M65: 40,250,803 km (0.093 R)
• M66: 40,347,593 km (0.083 R)
• M67: 41,220,945 km (0.06 R)
• M68: 42,887,765 km (0.114 R)
• M69: 43,085,234 km (0.101 R)
• M70: 43,283,002 km (0.103 R)
• M71: 43,481,220 km (0.061 R)
• M72: 45,177,510 km (0.04 R)
• M73: 45,278,040 km (0.053 R)
• M74: 46,185,351 km (0.09 R)
• M75: 48,223,322 km (0.097 R)
• M76: 49,356,676 km (0.086 R)
• M77: 52,175,399 km (0.098 R)
• M78: 55,260,556 km (0.098 R)
• M79: 55,475,528 km (0.087 R)
• M80: 55,798,510 km (0.037 R)
• M81: 57,422,544 km (0.09 R)
• M82: 59,722,163 km (0.088 R)
• M83: 61,828,501 km (0.085 R)
• M84: 65,771,901 km (0.066 R)
• M85: 68,522,557 km (0.111 R)
• M86: 68,869,175 km (0.096 R)
• M87: 69,332,031 km (0.114 R)
• M88: 72,836,211 km (0.111 R)
• M89: 76,517,366 km (0.091 R)
• M90: 76,637,194 km (0.1 R)
• M91: 77,236,782 km (0.117 R)
• M92: 79,287,470 km (0.045 R)
• M93: 81,111,666 km (0.089 R)
• M94: 81,233,738 km (0.09 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 288 - 17,793 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit