Illustration of Earth with several asteroids passing at different distances, one flagged as potentially hazardous

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(2008 KV2)

Designation: 2008 KV2 · NASA id: 3412755 · Potentially Hazardous

Estimated diameter: 149 – 333 meters

≈ the Great Pyramid
That comparison is of size only — what an impact would do depends on speed, angle, composition and where it arrives, none of which follows from width.
(absolute magnitude H = 21.26) · JPL Small-Body Database →

Earth impact concern
No identified impact threat
Why?
  • Its closest recorded pass was 9.4 lunar distances.
  • It is not on NASA/JPL’s Sentry list, which holds every object with a computed chance of impact above zero. Most objects are not on it.
What the four levels mean
  • No identified impact threat — not on any risk list. 98.8% of the objects here.
  • On a monitored risk list — a computed chance above zero, however small. 1.2% of the objects here.
  • Among the highest-ranked — Palermo at or above −2. Two objects worldwide qualify, both studied for decades and both centuries away.
  • Exceptional — Torino 1 or more, or Palermo at or above zero. No object anywhere currently qualifies.

These describe where an object sits in a catalogue, not how dangerous it is. The full ranked list is on the impact risk page.

Energy of motion, if it ever entered the atmosphere

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.

Why is one asteroid “hazardous” when closer ones are not?

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:

  • Its orbit can bring it within 0.05 AU of Earth’s — about 7.5 million km. This is the Minimum Orbit Intersection Distance, the closest the two paths ever come, not the distance on any given pass.
  • It is big enough to matter — absolute magnitude 22.0 or brighter, which is roughly 140 metres across and up. That threshold is a planning convention, not a physical boundary: it is about the size at which an impact could do regional damage. Smaller objects are not harmless, they are simply outside this definition — the Chelyabinsk object of 2013 was around 20 metres and injured about 1,500 people with the shock wave from its airburst, without ever reaching the ground intact.

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.

Orbital Data

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 period286.3 days (0.78 years)
Eccentricity.4120237696366494 (0 = circular, closer to 1 = more elongated)
Semi-major axis.8501134267780471 AU
Inclination5.040013205883716° (tilt of its orbit vs. Earth's)
Perihelion distance.4998464880582264 AU (closest approach to the Sun)
Aphelion distance1.200380365497868 AU (farthest from the Sun)
Minimum Orbit Intersection Distance0.04380 AU = 6,552,252 km
(closest its orbit path ever comes to Earth's, regardless of timing)
Ascending node longitude66.77318612410654°
Argument of perihelion347.8642006744518°
Mean anomaly / motion322.3332925454433° / 1.257444311731029°/day
Jupiter Tisserand invariant6.855 (helps distinguish asteroids from comets)
Reference epoch / equinoxJD 2461000.5 / J2000
Orbit determined2026-04-21 06:18:11
Observed2008-05-28 to 2026-04-21 (6537 day arc, 230 observations used)
Orbit uncertainty0 (0 = best known, 9 = least certain)

Close Approach History

Every close approach NASA has on record for this object — 128 total.

Why does it pass Earth and Venus? Doesn’t it orbit just one?

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.