🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.24

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.52 AU - 0.76 AU

Year: 222 Days

Day: 47.3 Hours

Environment

Temp: -6 °C

Axial Tilt: 14.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.89

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.63 AU - 0.79 AU

Year: 259 Days

Day: 23.7 Hours

Environment

Temp: -10 °C

Axial Tilt: 35.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.88

Radius: 1.29

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1 AU - 1.32 AU

Year: 542 Days

Day: 35.1 Hours

Environment

Temp: -78 °C

Axial Tilt: 47.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.93

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.89 AU - 2.67 AU

Year: 1492 Days

Day: 32.2 Hours

Environment

Temp: -128 °C

Axial Tilt: 16.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 1.98 AU - 3 AU

Year: 1703 Days

Day: 13.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 2.89 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 900.6

Radius: 14.8

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.64 AU - 3.92 AU

Year: 2575 Days

Day: 8.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 58,185,713 km

• M1: 202,107 km (0.043 R)
• M2: 327,919 km (0.084 R)
• M3: 549,473 km (0.038 R)
• M4: 706,252 km (0.115 R)
• M5: 1,059,901 km (0.051 R)
• M6: 1,217,577 km (0.073 R)
• M7: 1,323,343 km (0.04 R)
• M8: 1,420,282 km (0.067 R)
• M9: 1,726,509 km (0.071 R)
• M10: 1,970,503 km (0.096 R)
• M11: 2,211,655 km (0.115 R)
• M12: 2,447,720 km (0.087 R)
• M13: 2,833,533 km (0.105 R)
• M14: 3,239,093 km (0.071 R)
• M15: 3,406,643 km (0.091 R)
• M16: 3,542,777 km (0.118 R)
• M17: 3,733,065 km (0.086 R)
• M18: 4,087,762 km (0.102 R)
• M19: 4,196,370 km (0.03 R)
• M20: 4,305,876 km (0.117 R)
• M21: 4,602,977 km (0.117 R)
• M22: 5,022,449 km (0.036 R)
• M23: 5,178,031 km (0.036 R)
• M24: 5,654,800 km (0.113 R)
• M25: 5,755,928 km (0.115 R)
• M26: 6,480,729 km (0.091 R)
• M27: 6,778,878 km (0.074 R)
• M28: 6,886,439 km (0.117 R)
• M29: 7,300,526 km (0.105 R)
• M30: 7,543,921 km (0.089 R)
• M31: 8,175,972 km (0.115 R)
• M32: 8,382,717 km (0.091 R)
• M33: 8,544,731 km (0.106 R)
• M34: 9,155,838 km (0.057 R)
• M35: 9,346,725 km (0.108 R)
• M36: 9,902,781 km (0.097 R)
• M37: 10,569,538 km (0.048 R)
• M38: 11,455,457 km (0.035 R)
• M39: 11,635,573 km (0.07 R)
• M40: 11,868,497 km (0.081 R)
• M41: 11,972,467 km (0.056 R)
• M42: 12,155,276 km (0.088 R)
• M43: 12,842,229 km (0.084 R)
• M44: 13,109,860 km (0.084 R)
• M45: 13,271,276 km (0.09 R)
• M46: 13,568,976 km (0.051 R)
• M47: 13,896,445 km (0.083 R)
• M48: 14,116,055 km (0.034 R)
• M49: 14,420,038 km (0.117 R)
• M50: 15,034,436 km (0.117 R)
• M51: 15,260,030 km (0.099 R)
• M52: 15,429,973 km (0.11 R)
• M53: 15,600,515 km (0.09 R)
• M54: 16,029,711 km (0.071 R)
• M55: 16,144,752 km (0.093 R)
• M56: 16,782,787 km (0.079 R)
• M57: 17,606,772 km (0.115 R)
• M58: 17,934,092 km (0.115 R)
• M59: 18,203,368 km (0.058 R)
• M60: 18,473,991 km (0.047 R)
• M61: 18,897,801 km (0.102 R)
• M62: 19,019,424 km (0.087 R)
• M63: 19,355,272 km (0.063 R)
• M64: 19,785,665 km (0.097 R)
• M65: 20,032,950 km (0.056 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882

Radius: 12.7

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 3.05 AU - 5.08 AU

Year: 3546 Days

Day: 6.7 Hours

Environment

Temp: -167 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 58,185,713 km

• M1: 200,910 km (0.045 R)
• M2: 430,991 km (0.076 R)
• M3: 558,748 km (0.088 R)
• M4: 638,933 km (0.088 R)
• M5: 906,264 km (0.116 R)
• M6: 1,003,802 km (0.036 R)
• M7: 1,118,244 km (0.104 R)
• M8: 1,223,860 km (0.119 R)
• M9: 1,319,304 km (0.113 R)
• M10: 1,651,411 km (0.103 R)
• M11: 1,851,124 km (0.118 R)
• M12: 1,945,969 km (0.067 R)
• M13: 2,075,222 km (0.054 R)
• M14: 2,674,810 km (0.087 R)
• M15: 2,892,475 km (0.067 R)
• M16: 3,097,274 km (0.082 R)
• M17: 3,345,607 km (0.111 R)
• M18: 3,700,303 km (0.087 R)
• M19: 4,025,978 km (0.064 R)
• M20: 4,318,591 km (0.087 R)
• M21: 4,531,918 km (0.069 R)
• M22: 4,748,835 km (0.112 R)
• M23: 5,351,565 km (0.091 R)
• M24: 5,465,857 km (0.03 R)
• M25: 5,650,461 km (0.06 R)
• M26: 5,907,620 km (0.109 R)
• M27: 6,097,160 km (0.04 R)
• M28: 6,240,774 km (0.028 R)
• M29: 6,336,966 km (0.063 R)
• M30: 6,702,583 km (0.119 R)
• M31: 7,685,142 km (0.109 R)
• M32: 8,444,949 km (0.11 R)
• M33: 9,366,323 km (0.096 R)
• M34: 9,867,027 km (0.115 R)
• M35: 11,010,852 km (0.075 R)
• M36: 11,156,710 km (0.1 R)
• M37: 11,303,316 km (0.099 R)
• M38: 11,539,232 km (0.062 R)
• M39: 11,628,093 km (0.087 R)
• M40: 11,776,644 km (0.084 R)
• M41: 12,256,554 km (0.082 R)
• M42: 12,651,342 km (0.066 R)
• M43: 12,834,899 km (0.092 R)
• M44: 13,050,170 km (0.115 R)
• M45: 13,390,954 km (0.05 R)
• M46: 13,546,835 km (0.077 R)
• M47: 14,049,634 km (0.108 R)
• M48: 14,176,343 km (0.117 R)
• M49: 14,558,566 km (0.087 R)
• M50: 15,268,258 km (0.104 R)
• M51: 15,529,157 km (0.107 R)
• M52: 15,627,442 km (0.104 R)
• M53: 16,055,442 km (0.094 R)
• M54: 16,287,468 km (0.096 R)
• M55: 16,387,400 km (0.04 R)
• M56: 16,822,131 km (0.12 R)
• M57: 17,362,628 km (0.118 R)
• M58: 17,532,721 km (0.108 R)
• M59: 17,635,046 km (0.073 R)
• M60: 18,773,486 km (0.032 R)
• M61: 18,983,072 km (0.101 R)
• M62: 19,651,775 km (0.066 R)
• M63: 19,900,107 km (0.11 R)
• M64: 20,078,129 km (0.119 R)
• M65: 20,651,238 km (0.06 R)
• M66: 21,594,303 km (0.063 R)
• M67: 22,107,873 km (0.111 R)
• M68: 22,625,481 km (0.088 R)
• M69: 22,774,032 km (0.074 R)
• M70: 22,885,781 km (0.095 R)
• M71: 23,974,704 km (0.084 R)
• M72: 24,126,247 km (0.111 R)
• M73: 24,620,967 km (0.114 R)
• M74: 24,888,747 km (0.038 R)
• M75: 25,311,511 km (0.096 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.8

Radius: 8.4

Gravity: 9.9 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.48 AU - 5.92 AU

Year: 5140 Days

Day: 14.8 Hours

Environment

Temp: -181 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 58,185,713 km

• M1: 112,198 km (0.105 R)
• M2: 212,130 km (0.096 R)
• M3: 429,047 km (0.108 R)
• M4: 923,767 km (0.078 R)
• M5: 1,139,337 km (0.095 R)
• M6: 1,339,350 km (0.117 R)
• M7: 1,419,385 km (0.071 R)
• M8: 1,484,609 km (0.093 R)
• M9: 1,635,105 km (0.111 R)
• M10: 1,825,842 km (0.085 R)
• M11: 2,060,860 km (0.076 R)
• M12: 2,153,910 km (0.05 R)
• M13: 2,382,944 km (0.069 R)
• M14: 2,761,577 km (0.099 R)
• M15: 2,843,856 km (0.077 R)
• M16: 3,095,330 km (0.099 R)
• M17: 3,552,650 km (0.119 R)
• M18: 4,171,836 km (0.102 R)
• M19: 4,627,511 km (0.068 R)
• M20: 4,824,083 km (0.118 R)
• M21: 4,923,565 km (0.112 R)
• M22: 5,073,761 km (0.119 R)
• M23: 5,200,321 km (0.114 R)
• M24: 5,276,616 km (0.078 R)
• M25: 5,508,044 km (0.046 R)
• M26: 5,690,254 km (0.038 R)
• M27: 5,848,080 km (0.118 R)
• M28: 6,060,808 km (0.09 R)
• M29: 6,195,147 km (0.106 R)
• M30: 6,330,383 km (0.05 R)
• M31: 6,797,578 km (0.111 R)
• M32: 8,146,352 km (0.055 R)
• M33: 8,443,753 km (0.096 R)
• M34: 9,857,452 km (0.051 R)
• M35: 9,983,863 km (0.068 R)
• M36: 10,047,292 km (0.104 R)
• M37: 10,174,450 km (0.114 R)
• M38: 10,398,398 km (0.07 R)
• M39: 10,559,366 km (0.043 R)
• M40: 11,014,293 km (0.088 R)
• M41: 12,044,573 km (0.118 R)
• M42: 12,179,660 km (0.075 R)
• M43: 12,553,954 km (0.116 R)
• M44: 12,759,801 km (0.065 R)
• M45: 13,070,516 km (0.089 R)
• M46: 13,139,929 km (0.119 R)
• M47: 14,697,542 km (0.048 R)
• M48: 15,059,569 km (0.067 R)
• M49: 16,089,101 km (0.12 R)
• M50: 16,275,351 km (0.079 R)
• M51: 16,800,589 km (0.031 R)
• M52: 16,989,531 km (0.085 R)
• M53: 17,484,102 km (0.118 R)
• M54: 17,867,670 km (0.067 R)
• M55: 19,074,626 km (0.098 R)
• M56: 19,429,921 km (0.12 R)
• M57: 19,509,208 km (0.044 R)
• M58: 20,388,095 km (0.086 R)
• M59: 20,468,729 km (0.044 R)
• M60: 20,832,401 km (0.094 R)
• M61: 21,116,787 km (0.07 R)
• M62: 21,443,508 km (0.103 R)
• M63: 22,184,467 km (0.053 R)
• M64: 22,850,177 km (0.116 R)
• M65: 22,933,802 km (0.094 R)
• M66: 23,776,188 km (0.08 R)
• M67: 24,500,092 km (0.099 R)
• M68: 24,628,597 km (0.063 R)
• M69: 24,714,466 km (0.107 R)
• M70: 24,800,335 km (0.076 R)
• M71: 25,101,775 km (0.115 R)
• M72: 25,317,794 km (0.072 R)
• M73: 25,926,059 km (0.112 R)
• M74: 26,144,472 km (0.072 R)
• M75: 26,671,056 km (0.075 R)
• M76: 27,512,096 km (0.058 R)
• M77: 27,690,267 km (0.107 R)
• M78: 28,182,144 km (0.086 R)
• M79: 28,316,932 km (0.107 R)
• M80: 29,084,070 km (0.076 R)
• M81: 29,720,908 km (0.049 R)
• M82: 29,903,717 km (0.09 R)
• M83: 30,270,531 km (0.086 R)
• M84: 30,730,993 km (0.069 R)
• M85: 30,823,444 km (0.088 R)
• M86: 30,962,122 km (0.074 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.6

Radius: 9.2

Gravity: 4.63 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 7.36 AU - 9.12 AU

Year: 10253 Days

Day: 9.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 58,185,713 km

• M1: 133,142 km (0.117 R)
• M2: 293,361 km (0.081 R)
• M3: 437,125 km (0.055 R)
• M4: 512,373 km (0.105 R)
• M5: 606,619 km (0.092 R)
• M6: 737,069 km (0.025 R)
• M7: 910,004 km (0.102 R)
• M8: 1,027,139 km (0.093 R)
• M9: 1,203,515 km (0.059 R)
• M10: 1,389,914 km (0.073 R)
• M11: 1,506,451 km (0.103 R)
• M12: 2,204,773 km (0.102 R)
• M13: 2,364,544 km (0.069 R)
• M14: 2,434,257 km (0.099 R)
• M15: 3,143,500 km (0.103 R)
• M16: 3,246,274 km (0.101 R)
• M17: 3,534,399 km (0.105 R)
• M18: 3,968,383 km (0.091 R)
• M19: 4,361,975 km (0.043 R)
• M20: 4,534,611 km (0.088 R)
• M21: 4,738,812 km (0.091 R)
• M22: 5,338,998 km (0.036 R)
• M23: 6,610,132 km (0.088 R)
• M24: 7,279,432 km (0.102 R)
• M25: 7,450,124 km (0.11 R)
• M26: 8,005,431 km (0.045 R)
• M27: 8,502,245 km (0.106 R)
• M28: 8,574,052 km (0.08 R)
• M29: 8,790,670 km (0.05 R)
• M30: 9,451,294 km (0.08 R)
• M31: 9,862,838 km (0.102 R)
• M32: 10,318,663 km (0.106 R)
• M33: 10,936,951 km (0.111 R)
• M34: 11,093,430 km (0.065 R)
• M35: 11,448,127 km (0.056 R)
• M36: 11,646,942 km (0.089 R)
• M37: 11,967,231 km (0.055 R)
• M38: 12,047,715 km (0.059 R)
• M39: 12,290,512 km (0.081 R)
• M40: 12,412,435 km (0.117 R)
• M41: 12,616,636 km (0.041 R)
• M42: 12,739,605 km (0.107 R)
• M43: 13,111,206 km (0.104 R)
• M44: 13,444,361 km (0.114 R)
• M45: 13,822,694 km (0.025 R)
• M46: 15,108,637 km (0.119 R)
• M47: 15,545,762 km (0.051 R)
• M48: 15,854,233 km (0.028 R)
• M49: 16,298,389 km (0.107 R)
• M50: 16,656,825 km (0.081 R)
• M51: 16,972,477 km (0.098 R)
• M52: 17,108,312 km (0.101 R)
• M53: 17,472,433 km (0.065 R)
• M54: 18,347,580 km (0.075 R)
• M55: 18,767,053 km (0.118 R)
• M56: 18,907,525 km (0.025 R)
• M57: 21,889,460 km (0.116 R)
• M58: 23,383,942 km (0.113 R)
• M59: 24,398,515 km (0.079 R)
• M60: 25,168,944 km (0.07 R)
• M61: 26,628,122 km (0.117 R)
• M62: 28,114,676 km (0.088 R)
• M63: 29,955,777 km (0.12 R)
• M64: 30,669,957 km (0.119 R)
• M65: 31,001,466 km (0.068 R)
• M66: 33,241,844 km (0.089 R)
• M67: 33,355,239 km (0.066 R)
• M68: 34,553,518 km (0.085 R)
• M69: 34,840,895 km (0.099 R)
• M70: 34,956,086 km (0.085 R)
• M71: 35,302,405 km (0.098 R)
• M72: 35,360,299 km (0.093 R)
• M73: 35,418,044 km (0.065 R)
• M74: 35,765,859 km (0.12 R)
• M75: 36,056,677 km (0.049 R)
• M76: 36,640,408 km (0.079 R)
• M77: 36,757,543 km (0.116 R)
• M78: 37,286,222 km (0.079 R)
• M79: 38,054,258 km (0.104 R)
• M80: 39,365,932 km (0.112 R)

Planet 10 - Ice Giant

Semi-Major Axis: 12.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 317.6

Radius: 7.3

Gravity: 5.96 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 10.28 AU - 15.14 AU

Year: 19642 Days

Day: 20.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (81)

Outer Limit: 58,185,713 km

• M1: 197,469 km (0.084 R)
• M2: 306,825 km (0.102 R)
• M3: 521,199 km (0.108 R)
• M4: 1,098,348 km (0.034 R)
• M5: 1,380,788 km (0.117 R)
• M6: 1,900,491 km (0.086 R)
• M7: 2,239,181 km (0.118 R)
• M8: 3,984,539 km (0.031 R)
• M9: 4,198,763 km (0.081 R)
• M10: 4,564,381 km (0.041 R)
• M11: 5,286,938 km (0.119 R)
• M12: 6,085,492 km (0.103 R)
• M13: 6,208,611 km (0.119 R)
• M14: 6,332,478 km (0.061 R)
• M15: 6,964,080 km (0.108 R)
• M16: 7,703,991 km (0.105 R)
• M17: 7,926,443 km (0.083 R)
• M18: 8,015,903 km (0.114 R)
• M19: 9,022,996 km (0.113 R)
• M20: 9,446,507 km (0.036 R)
• M21: 9,732,389 km (0.107 R)
• M22: 9,924,622 km (0.095 R)
• M23: 10,263,910 km (0.064 R)
• M24: 10,656,455 km (0.081 R)
• M25: 10,954,005 km (0.059 R)
• M26: 12,378,775 km (0.117 R)
• M27: 12,691,584 km (0.067 R)
• M28: 12,848,961 km (0.056 R)
• M29: 13,431,645 km (0.088 R)
• M30: 13,914,846 km (0.098 R)
• M31: 15,286,509 km (0.09 R)
• M32: 15,903,750 km (0.055 R)
• M33: 17,278,255 km (0.095 R)
• M34: 17,394,492 km (0.091 R)
• M35: 17,452,836 km (0.046 R)
• M36: 17,803,493 km (0.115 R)
• M37: 17,862,135 km (0.079 R)
• M38: 19,109,333 km (0.109 R)
• M39: 19,169,471 km (0.069 R)
• M40: 19,289,897 km (0.106 R)
• M41: 19,713,110 km (0.084 R)
• M42: 21,561,691 km (0.094 R)
• M43: 22,253,132 km (0.101 R)
• M44: 22,379,692 km (0.067 R)
• M45: 27,090,828 km (0.095 R)
• M46: 27,361,301 km (0.102 R)
• M47: 27,496,837 km (0.053 R)
• M48: 28,314,987 km (0.098 R)
• M49: 28,520,684 km (0.054 R)
• M50: 28,795,795 km (0.085 R)
• M51: 30,044,788 km (0.112 R)
• M52: 31,169,764 km (0.084 R)
• M53: 31,595,220 km (0.094 R)
• M54: 33,678,221 km (0.107 R)
• M55: 34,626,372 km (0.031 R)
• M56: 35,583,350 km (0.087 R)
• M57: 36,474,354 km (0.117 R)
• M58: 36,623,504 km (0.116 R)
• M59: 36,772,952 km (0.117 R)
• M60: 36,847,751 km (0.093 R)
• M61: 37,447,788 km (0.104 R)
• M62: 40,883,153 km (0.118 R)
• M63: 41,504,284 km (0.101 R)
• M64: 41,972,226 km (0.109 R)
• M65: 46,828,023 km (0.05 R)
• M66: 47,396,495 km (0.106 R)
• M67: 48,294,381 km (0.068 R)
• M68: 48,540,171 km (0.09 R)
• M69: 49,197,953 km (0.077 R)
• M70: 50,107,059 km (0.093 R)
• M71: 50,272,963 km (0.109 R)
• M72: 50,439,016 km (0.093 R)
• M73: 51,355,603 km (0.057 R)
• M74: 51,522,853 km (0.103 R)
• M75: 51,606,628 km (0.047 R)
• M76: 51,690,403 km (0.069 R)
• M77: 52,614,469 km (0.077 R)
• M78: 53,713,714 km (0.111 R)
• M79: 53,968,479 km (0.093 R)
• M80: 54,649,748 km (0.12 R)
• M81: 57,490,013 km (0.114 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 257 - 11,678 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit