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Designation: 2008 KV2 · NASA id: 3412755
· Potentially Hazardous
Estimated diameter: 149 – 333 meters
These describe where an object sits in a catalogue, not how dangerous it is. The full ranked list is on the impact risk page.
40.0 megatonnes – 1,489 megatonnes of TNT
This is not a forecast. Nothing here says this object will arrive, and almost nothing ever does — what is actually assessed, by people with far better data than this page has, is on the impact risk page. This is simply the kinetic energy such a body would carry, worked out from its size and its usual encounter speed.
The range spans a factor of 37, and it cannot be narrowed. Nobody has weighed this object. Its diameter is inferred from how bright it is under an assumed reflectivity, which carries a fixed factor of 2.24 — and because mass goes as the cube of diameter, that alone becomes a factor of 11. Density is then assumed somewhere between 1,500 and 5,000 kg/m³, from a loose rubble pile to dense rock. Quoting a tighter figure would be invented precision.
Megatonnes do not mean what the word suggests here. Most of this energy is spent high in the atmosphere, not on the ground, and the comparison with weapons misleads badly. The Chelyabinsk body released around 440 kilotonnes in 2013 — this same calculation gives it 166 to 904 — and the damage was broken windows across a city, from the shock wave of an airburst some thirty kilometres up. No crater, and nothing that reached the ground intact.
Because the flag has nothing to do with how close it came on the day. NASA marks an object a Potentially Hazardous Asteroid only if both of these are true of its orbit and its size:
The two terms:
AU — astronomical unit, the average Earth–Sun distance, 149,597,871 km. 0.05 AU is about 7.5 million km.
MOID — minimum orbit intersection distance, the closest the two orbits ever come, whatever the timing.
See the glossary for NEO, PHA and H.
So a large rock passing at 39 million km today can be flagged, because on some future orbit it could come far nearer — while a pebble skimming past at 4 million km is not, because it would never reach the ground.
Three objects that all passed Earth on 30 August 2026 make the point better than any definition:
| Object | Size | Orbit’s closest to Earth’s | Missed by, that day | Flagged |
|---|---|---|---|---|
| 2013 JR28 | 122–272 m | 5.3 M km (0.035 AU) | 39.2 M km | Yes — both tests pass |
| 2012 LE11 | 629–1,406 m | 23.3 M km (0.156 AU) | 26.1 M km | No — orbit never gets near enough |
| 2007 EK | 3.7–8.2 m | 198,000 km (0.0013 AU) | 4.2 M km | No — far too small |
The middle one is five times larger than the flagged one and passed closer on the day, but its path can never come within 23 million km of ours. The last one’s orbit crosses inside the Moon’s distance — nearer than any other object here — and it is still not hazardous, because at a few metres across it would burn up long before it landed.
“Potentially hazardous” is a watchlist criterion, not a prediction. None of these is on a collision course; the label means an object is worth keeping precise track of over the coming centuries.
Orbit class: ATE — Near-Earth asteroid orbits similar to that of 2062 Aten
a (semi-major axis) < 1.0 AU; q (perihelion) > 0.983 AU
| Orbital period | 286.3 days (0.78 years) |
| Eccentricity | .4120237696366494 (0 = circular, closer to 1 = more elongated) |
| Semi-major axis | .8501134267780471 AU |
| Inclination | 5.040013205883716° (tilt of its orbit vs. Earth's) |
| Perihelion distance | .4998464880582264 AU (closest approach to the Sun) |
| Aphelion distance | 1.200380365497868 AU (farthest from the Sun) |
| Minimum Orbit Intersection Distance | 0.04380 AU = 6,552,252 km (closest its orbit path ever comes to Earth's, regardless of timing) |
| Ascending node longitude | 66.77318612410654° |
| Argument of perihelion | 347.8642006744518° |
| Mean anomaly / motion | 322.3332925454433° / 1.257444311731029°/day |
| Jupiter Tisserand invariant | 6.855 (helps distinguish asteroids from comets) |
| Reference epoch / equinox | JD 2461000.5 / J2000 |
| Orbit determined | 2026-04-21 06:18:11 |
| Observed | 2008-05-28 to 2026-04-21 (6537 day arc, 230 observations used) |
| Orbit uncertainty | 0 (0 = best known, 9 = least certain) |
Every close approach NASA has on record for this object — 128 total.
It orbits the Sun. Not Earth, and not Venus. The column above does not say what the asteroid goes around — it says which planet a given close approach was to. 74 of them were approaches to Earth and 54 of them were approaches to Venus.
This one’s path runs from 0.500 AU at its closest to the Sun out to 1.200 AU at its farthest. For scale, Venus orbits at about 0.72 AU and Earth at 1.00 AU — so an orbit spanning that range crosses the path of every planet in between, once on the way out and once on the way back.
Crossing a planet’s path is not the same as meeting the planet. Almost every time the asteroid crosses, that planet is somewhere else along its own orbit. A close approach is logged only on the rare occasions when both happen to arrive at the crossing point at roughly the same time — which is why the dates below are scattered rather than regular. This object takes 286.3 days to go round, against Earth’s 365.25, so the two drift in and out of step over years rather than repeating on a neat cycle.
The Minimum Orbit Intersection Distance in the table above (0.0438 AU) is the closest the two paths ever come. The miss distances below are how far apart the two bodies actually were on the day, which is almost always very much larger.
next approach: 2027-08-21
| Date | Passed near | Velocity (km/h) | Miss distance |
|---|---|---|---|
| 2199-11-22 | Venus | 63787.04 | 10,311,364 km 26.8 LD |
| 2199-04-27 | Earth | 31194.11 | 25,094,191 km 65.3 LD |
| 2193-06-09 | Venus | 32812.23 | 17,802,026 km 46.3 LD |
| 2192-06-02 | Earth | 31301.80 | 25,482,112 km 66.3 LD |
| 2191-04-14 | Venus | 71800.61 | 16,910,709 km 44.0 LD |
| 2188-04-02 | Earth | 45549.00 | 13,727,023 km 35.7 LD |
| 2185-06-28 | Earth | 38133.83 | 7,223,661 km 18.8 LD |
| 2181-04-17 | Earth | 30860.06 | 21,286,241 km 55.4 LD |
| 2174-05-21 | Earth | 31786.17 | 27,922,781 km 72.6 LD |
| 2173-02-04 | Venus | 71152.92 | 16,600,122 km 43.2 LD |
| 2170-12-11 | Venus | 32625.77 | 17,620,383 km 45.8 LD |
| 2170-04-04 | Earth | 54961.46 | 23,909,233 km 62.2 LD |
| 2167-06-23 | Earth | 32401.80 | 14,114,675 km 36.7 LD |
| 2164-06-29 | Venus | 59201.51 | 6,837,238 km 17.8 LD |
| 2163-04-08 | Earth | 32447.83 | 15,369,805 km 40.0 LD |
| 2162-05-07 | Venus | 43097.83 | 8,502,475 km 22.1 LD |
| 2160-06-26 | Earth | 55030.60 | 22,278,297 km 58.0 LD |
| 2156-05-16 | Earth | 31931.61 | 28,303,318 km 73.6 LD |
| 2155-11-18 | Venus | 57118.61 | 5,341,426 km 13.9 LD |
| 2153-09-25 | Venus | 41320.93 | 9,914,504 km 25.8 LD |
| 2152-04-03 | Earth | 52967.80 | 21,487,978 km 55.9 LD |
| 2149-06-27 | Earth | 35481.26 | 9,403,800 km 24.5 LD |
| 2147-04-06 | Venus | 65583.75 | 11,930,371 km 31.0 LD |
| 2145-04-20 | Earth | 30948.66 | 23,136,472 km 60.2 LD |
| 2145-02-08 | Venus | 32857.85 | 17,397,642 km 45.3 LD |
| 2138-08-23 | Venus | 77371.85 | 21,844,938 km 56.8 LD |
| 2138-06-07 | Earth | 31158.28 | 23,907,657 km 62.2 LD |
| 2134-04-03 | Earth | 36463.91 | 11,327,154 km 29.5 LD |
| 2131-06-28 | Earth | 51439.27 | 17,729,681 km 46.1 LD |
| 2127-05-17 | Earth | 31953.59 | 28,506,858 km 74.2 LD |
| 2124-07-17 | Venus | 32226.72 | 19,359,814 km 50.4 LD |
| 2123-04-03 | Earth | 51045.31 | 19,295,455 km 50.2 LD |
| 2122-05-18 | Venus | 67747.39 | 13,535,720 km 35.2 LD |
| 2120-06-27 | Earth | 36915.26 | 7,928,362 km 20.6 LD |
| 2116-04-22 | Earth | 30991.92 | 24,128,551 km 62.8 LD |
| 2115-11-29 | Venus | 38932.19 | 12,074,377 km 31.4 LD |
| 2113-10-05 | Venus | 60688.20 | 7,829,441 km 20.4 LD |
| 2109-06-03 | Earth | 31272.59 | 25,045,509 km 65.2 LD |
| 2107-04-18 | Venus | 39847.09 | 11,324,209 km 29.5 LD |
| 2105-04-02 | Earth | 42148.80 | 11,516,033 km 30.0 LD |
| 2105-02-23 | Venus | 62139.63 | 8,952,941 km 23.3 LD |
| 2102-06-28 | Earth | 41330.48 | 7,217,650 km 18.8 LD |
| 2098-09-11 | Venus | 32851.28 | 17,750,754 km 46.2 LD |
| 2098-04-24 | Earth | 31096.49 | 24,840,031 km 64.6 LD |
| 2096-07-16 | Venus | 71394.70 | 16,560,552 km 43.1 LD |
| 2091-05-30 | Earth | 31400.09 | 26,157,648 km 68.0 LD |
| 2087-04-01 | Earth | 47168.12 | 15,473,635 km 40.3 LD |
| 2084-06-26 | Earth | 36791.32 | 7,882,117 km 20.5 LD |
| 2080-04-13 | Earth | 30883.31 | 20,160,050 km 52.4 LD |
| 2078-05-09 | Venus | 73258.10 | 18,346,798 km 47.7 LD |
| 2077-06-24 | Earth | 58975.23 | 27,333,301 km 71.1 LD |
| 2076-03-12 | Venus | 31994.68 | 19,056,549 km 49.6 LD |
| 2073-05-17 | Earth | 31839.36 | 28,164,897 km 73.3 LD |
| 2069-09-30 | Venus | 61721.36 | 8,790,342 km 22.9 LD |
| 2069-04-03 | Earth | 56473.28 | 25,755,970 km 67.0 LD |
| 2067-08-09 | Venus | 40548.82 | 10,585,068 km 27.5 LD |
| 2066-06-21 | Earth | 32234.55 | 14,693,122 km 38.2 LD |
| 2062-04-07 | Earth | 32116.15 | 16,138,316 km 42.0 LD |
| 2061-02-20 | Venus | 55055.50 | 4,109,653 km 10.7 LD |
| 2059-06-25 | Earth | 55987.07 | 23,405,491 km 60.9 LD |
| 2058-12-29 | Venus | 44587.32 | 7,391,390 km 19.2 LD |
| 2055-05-20 | Earth | 31901.94 | 28,212,115 km 73.4 LD |
| 2052-07-09 | Venus | 62428.91 | 9,345,674 km 24.3 LD |
| 2051-04-01 | Earth | 49313.40 | 17,667,735 km 46.0 LD |
| 2050-05-15 | Venus | 34859.82 | 15,398,673 km 40.1 LD |
| 2048-06-26 | Earth | 38539.02 | 6,813,829 km 17.7 LD |
| 2044-04-26 | Earth | 31317.62 | 25,844,360 km 67.2 LD |
| 2043-11-26 | Venus | 74703.26 | 19,571,486 km 50.9 LD |
| 2037-06-14 | Earth | 31074.24 | 19,885,351 km 51.7 LD |
| 2033-04-05 | Earth | 32606.33 | 15,473,136 km 40.3 LD |
| 2030-06-25 | Earth | 57541.76 | 25,255,152 km 65.7 LD |
| 2029-10-24 | Venus | 33161.59 | 21,460,100 km 55.8 LD |
| 2027-08-21 next | Venus | 70181.88 | 15,554,102 km 40.5 LD |
| 2026-05-23 | Earth | 31779.34 | 27,744,387 km 72.2 LD |
| 2022-04-01 | Earth | 45867.33 | 14,339,199 km 37.3 LD |
| 2021-03-01 | Venus | 39690.72 | 11,467,703 km 29.8 LD |
| 2019-06-27 | Earth | 40934.12 | 6,803,218 km 17.7 LD |
| 2019-01-07 | Venus | 59319.16 | 6,819,987 km 17.7 LD |
| 2015-04-27 | Earth | 31302.07 | 26,076,813 km 67.8 LD |
| 2012-07-19 | Venus | 44500.82 | 7,589,178 km 19.7 LD |
| 2010-05-27 | Venus | 56203.41 | 4,694,544 km 12.2 LD |
| 2008-06-06 | Earth | 31081.37 | 23,352,853 km 60.8 LD |
| 2004-03-31 | Earth | 40939.47 | 11,352,168 km 29.5 LD |
| 2003-12-11 | Venus | 37746.60 | 13,091,428 km 34.1 LD |
| 2001-10-18 | Venus | 66979.50 | 12,894,498 km 33.5 LD |
| 2001-06-27 | Earth | 42194.35 | 7,469,568 km 19.4 LD |
| 1997-04-23 | Earth | 31004.01 | 24,794,459 km 64.5 LD |
| 1990-05-27 | Earth | 31552.58 | 26,565,056 km 69.1 LD |
| 1986-04-01 | Earth | 48809.53 | 17,418,521 km 45.3 LD |
| 1983-08-11 | Venus | 77910.04 | 22,289,086 km 58.0 LD |
| 1983-06-25 | Earth | 35352.63 | 9,093,412 km 23.7 LD |
| 1981-06-09 | Venus | 33329.08 | 21,533,784 km 56.0 LD |
| 1979-04-10 | Earth | 31127.68 | 18,718,511 km 48.7 LD |
| 1976-06-24 | Earth | 56828.32 | 24,431,895 km 63.6 LD |
| 1975-01-03 | Venus | 61760.41 | 8,838,276 km 23.0 LD |
| 1972-11-11 | Venus | 40941.69 | 10,277,379 km 26.7 LD |
| 1972-05-14 | Earth | 31933.35 | 28,345,702 km 73.7 LD |
| 1968-04-02 | Earth | 57301.70 | 26,880,753 km 69.9 LD |
| 1966-05-26 | Venus | 54876.31 | 4,057,835 km 10.6 LD |
| 1965-06-20 | Earth | 32063.08 | 15,033,046 km 39.1 LD |
| 1964-04-03 | Venus | 45847.02 | 6,489,644 km 16.9 LD |
| 1961-04-08 | Earth | 31464.17 | 17,804,392 km 46.3 LD |
| 1958-06-24 | Earth | 58660.54 | 26,765,209 km 69.6 LD |
| 1957-10-14 | Venus | 57836.66 | 5,844,020 km 15.2 LD |
| 1955-08-20 | Venus | 39072.10 | 11,804,623 km 30.7 LD |
| 1954-05-24 | Earth | 31741.21 | 27,591,947 km 71.8 LD |
| 1950-03-31 | Earth | 44157.09 | 13,229,557 km 34.4 LD |
| 1949-02-28 | Venus | 72564.41 | 17,753,962 km 46.2 LD |
| 1947-06-27 | Earth | 43299.11 | 8,161,216 km 21.2 LD |
| 1943-05-06 | Earth | 31840.32 | 28,208,882 km 73.4 LD |
| 1939-04-03 | Earth | 57160.43 | 26,714,434 km 69.5 LD |
| 1936-06-23 | Earth | 33918.07 | 11,273,448 km 29.3 LD |
| 1935-01-19 | Venus | 33410.30 | 17,095,127 km 44.5 LD |
| 1932-11-22 | Venus | 64444.99 | 10,851,656 km 28.2 LD |
| 1932-04-17 | Earth | 30823.48 | 22,929,886 km 59.7 LD |
| 1926-06-03 | Venus | 45147.96 | 7,086,886 km 18.4 LD |
| 1925-06-03 | Earth | 31155.40 | 24,524,777 km 63.8 LD |
| 1924-04-09 | Venus | 53935.80 | 3,628,846 km 9.44 LD |
| 1921-03-31 | Earth | 40153.56 | 11,449,191 km 29.8 LD |
| 1918-06-27 | Earth | 44828.53 | 9,570,917 km 24.9 LD |
| 1917-10-21 | Venus | 46122.31 | 6,362,676 km 16.6 LD |
| 1915-08-30 | Venus | 55121.64 | 4,124,710 km 10.7 LD |
| 1914-04-30 | Earth | 31447.71 | 26,788,095 km 69.7 LD |
| 1909-03-14 | Venus | 38424.63 | 12,498,343 km 32.5 LD |
| 1907-06-04 | Earth | 31156.13 | 24,244,642 km 63.1 LD |
| 1907-01-21 | Venus | 65907.35 | 12,046,246 km 31.3 LD |
| 1903-03-31 | Earth | 44386.75 | 13,610,677 km 35.4 LD |
| 1900-06-25 | Earth | 38507.47 | 6,229,389 km 16.2 LD |
Looked up from NASA's NeoWs API and cached — last refreshed 2026-09-04T21:00:16.524387+00:00.