Key Facts

  • Classified as a Aten-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 26,739,082 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

396593 (2001 HC) is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2001 HC as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of collision.

2001 HC orbits the sun every 299 days (0.82 years), coming as close as 0.44 AU and reaching as far as 1.31 AU from the sun. Based on its brightness and the way it reflects light, 2001 HC is probably between 0.42 to 0.94 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to the Golden Gate Bridge.

Close Approaches

2001 HC's orbit is 0.10 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.

2001 HC has 93 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 16, 2019 26,739,082 14.738
July 2, 2020 61,865,141 17.585
April 19, 2023 50,777,521 25.687
May 21, 2024 58,584,130 14.136
Sept. 14, 2024 72,421,697 20.879
April 16, 2028 28,197,837 14.643
July 2, 2029 62,520,547 18.094
April 17, 2032 48,529,213 25.216
May 23, 2033 58,956,891 14.117
Sept. 12, 2033 72,048,665 20.458
April 18, 2037 29,789,199 14.572
July 2, 2038 63,350,126 18.640
April 17, 2041 45,838,942 24.633
May 25, 2042 59,384,943 14.071
Sept. 10, 2042 71,624,093 19.947
April 19, 2046 31,701,184 14.471
July 1, 2047 64,456,551 19.277
April 17, 2050 42,921,474 24.022
May 27, 2051 59,785,552 14.005
Sept. 8, 2051 71,113,023 19.391
April 20, 2055 33,416,143 14.423
June 30, 2056 65,557,599 19.869
April 16, 2059 40,509,326 23.532
May 28, 2060 60,085,784 13.978
Sept. 5, 2060 70,690,225 18.929
April 21, 2064 35,001,788 14.387
June 30, 2065 66,762,033 20.470
April 15, 2068 37,707,938 22.925
May 30, 2069 60,349,576 13.895
Sept. 2, 2069 70,134,421 18.293
April 22, 2073 37,051,359 14.329
June 29, 2074 68,451,837 21.221
April 15, 2077 34,264,593 22.186
June 2, 2078 60,615,861 13.824
Aug. 30, 2078 69,479,651 17.517
April 24, 2082 39,186,104 14.322
June 28, 2083 70,363,517 22.021
April 14, 2086 30,983,584 21.500
June 4, 2087 60,780,092 13.739
Aug. 27, 2087 68,761,309 16.694
April 26, 2091 41,047,664 14.302
June 27, 2092 72,249,987 22.771
April 14, 2095 28,232,739 20.900
June 6, 2096 60,886,620 13.648
Aug. 23, 2096 68,137,709 15.993
April 28, 2100 42,493,197 14.290
June 27, 2101 73,768,587 23.334
April 14, 2104 26,167,979 20.429
June 9, 2105 60,925,452 13.604
Aug. 21, 2105 67,601,294 15.398
April 29, 2109 43,678,702 14.306
April 14, 2113 24,278,386 20.022
June 11, 2114 60,959,925 13.524
Aug. 19, 2114 67,078,835 14.788
April 30, 2118 44,714,092 14.294
April 14, 2122 23,042,636 19.748
June 12, 2123 60,982,607 13.480
Aug. 17, 2123 66,722,138 14.360
May 1, 2127 45,130,526 14.289
April 14, 2131 22,749,619 19.673
June 12, 2132 61,021,958 13.484
Aug. 16, 2132 66,652,954 14.336
April 30, 2136 45,194,190 14.305
April 13, 2140 22,629,111 19.652
June 12, 2141 61,025,439 13.460
Aug. 16, 2141 66,590,784 14.281
May 1, 2145 45,338,311 14.291
April 14, 2149 22,349,904 19.607
June 13, 2150 61,041,283 13.451
Aug. 16, 2150 66,520,798 14.184
May 1, 2154 45,464,819 14.287
April 14, 2158 22,358,468 19.593
June 13, 2159 61,048,295 13.466
Aug. 16, 2159 66,526,628 14.210
May 1, 2163 45,289,237 14.301
April 14, 2167 22,837,088 19.718
June 12, 2168 61,092,410 13.467
Aug. 17, 2168 66,703,949 14.497
April 30, 2172 44,736,407 14.293
April 14, 2176 24,155,225 20.043
June 11, 2177 61,149,727 13.510
Aug. 20, 2177 67,149,539 15.019
April 29, 2181 43,664,882 14.276
June 28, 2182 74,601,523 23.640
April 15, 2185 26,162,237 20.492
June 9, 2186 61,185,707 13.587
Aug. 23, 2186 67,702,729 15.735
April 28, 2190 42,289,867 14.292
June 29, 2191 72,937,160 23.018
April 15, 2194 28,503,277 21.014
June 7, 2195 61,175,655 13.668
Aug. 27, 2195 68,279,312 16.402
April 27, 2199 40,765,470 14.301

Images and Observations

2001 HC's orbit is determined by observations dating back to April 16, 2001. It was last officially observed on June 24, 2014. The IAU Minor Planet Center records 183 observations used to determine its orbit.

Accessibility and Exploration

This asteroid is not considered a viable target for human exploration by the NHATS study.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2001 HC:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 0.874558157136 AU
  • Eccentricity: 0.499428053792
  • Inclination: 23.7411113918°
  • Longitude of Ascending Node: 32.6097549337°
  • Argument of Periapsis: 28.1732034993°
  • Mean Anomaly: 120.879614524°

Physical Characteristics

  • Diameter: ~0.54 km
  • Magnitude: 19.0

Derived Characteristics

  • Orbit Period: 299 days (0.82 years)
  • Avg. Orbit Speed: 31.85 km/s
  • Aphelion Distance: 1.31 AU
  • Perihelion Distance: 0.44 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 396593 (2001 HC) is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.