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At a glance
- Width
- 52 to 115 m
- about 417 bananas
- Speed
- 19.35 km/s
- 69,655 km/h · 43,281 mph
- Misses us by
- 189.8 lunar
- 72,990,676 km · 45,354,289 miles
- First spotted by us
- 13th November 2026
- 2 page views
How far is "close"?
Same gap, ranked against places you have heard of, on a log scale because the Sun is awkwardly far away.
How big is it, really?
NASA only estimates the width, so we show the biggest guess. Log scale again. Everest is just there to make everything else look reasonable.
How fast is it going?
Speed relative to Earth at closest approach. The International Space Station is the fastest thing most of us will ever stand under. This lot would lap it.
If it hit (it will not)
Rough impact energy at the biggest size estimate, assuming solid rock, in tonnes, kilotons and megatons of TNT, which is how everyone who has to do this maths measures it. Treat it as a ballpark. The point stands: no impact is scheduled.
Where it actually lives
A top-down view of the orbit, to scale, with Earth's and Mars's orbits for company. The tilt of the orbit is ignored, so treat the shape as right and the exact position as roughly right. The Sun is the orange dot in the middle.
- Orbit class
- ATEAten: crosses Earth's orbit while spending most of its time inside it, between us and the Sun.
- Year length
- 0.84 Earth years (306 days)One lap of the Sun. Your commute is shorter, and so is your patience.
- Eccentricity
- 0.442How squashed the orbit is. 0 is a perfect circle, 1 is "leaving". Noticeably oval. Mildly dramatic.
- Tilt
- 7.2°The angle of its orbit against the flat plane the planets share. Slightly tipsy.
- Closest to the Sun
- 0.50 AU74 million km. One AU is the distance from Earth to the Sun.
- Furthest from the Sun
- 1.28 AU192 million km. Never leaves the inner solar system.
- Closest orbit-to-orbit gap
- 0.019 AUIf you only compare the two orbits, not where the planets are, they come within 7 lunar distances. The rock is rarely there at the same time as us, which is the entire reason we are still here.
- Observations used
- 47NASA has measured this one 47 times. It has been stalked thoroughly.
- Watched for
- 6.2 years2016-03-12 to 2022-05-28. Not long, so the orbit is still being refined and the rock is still a bit of a stranger.
- Orbit uncertainty
- 2 out of 90 means we know exactly where it is going. 9 means a shrug. Lower is better.
Is it actually hazardous?
This one fails at least one test, so it is not on the list. It is comfortably, boringly harmless.
Not on NASA's Sentry impact-risk watch list. No further action, no thoughts, head empty.
Its history with us
Every known pass this rock makes, 1900 to 2200. Dim dots are the past, green dots are still to come, the big orange ring is this one. The dashed line is the Moon's distance, so anything below it is closer than the Moon. Almost nothing is.
| Date | Miss distance | Speed |
|---|---|---|
| 27th September 2011 | 192.3 LD · 73,954,896 km | 20.0 km/s |
| 3rd June 2012 | 74.4 LD · 28,606,490 km | 17.4 km/s |
| 24th February 2016 | 27.6 LD · 10,615,899 km | 11.2 km/s |
| 8th June 2017 | 47.3 LD · 18,207,367 km | 12.3 km/s |
| 25th February 2021 | 33.5 LD · 12,885,999 km | 15.6 km/s |
| 1st June 2022 | 77.8 LD · 29,906,588 km | 9.0 km/s |
| 3rd March 2026 | 93.2 LD · 35,841,083 km | 20.4 km/s |
| 13th November 2026 (this one) | 189.8 LD · 72,990,676 km | 19.3 km/s |
| 9th May 2027 | 107.4 LD · 41,313,032 km | 9.6 km/s |
| 26th July 2027 | 135.6 LD · 52,146,585 km | 9.1 km/s |
By the numbers
- Estimated mass
- 215,668 tonnes to 2.4 million tonnesVolume of a sphere at NASA's smallest and largest width estimates, times 3,000 kg per cubic metre (typical rock). Real shapes are lumpier, so treat it as a ballpark.
- Swimming pools of rock
- 122 Olympic poolsSphere volume at the middle width estimate, divided by 2,500 cubic metres per Olympic pool.
- Impact energy, if it hit
- 9.6 megatons to 108 megatonsHalf mass times speed squared, at the small and large width estimates, converted to TNT (1 kiloton is 4.184 trillion joules). A rock this far away is not going to do this.
- Speed against escape velocity
- 1.7 timesIts speed relative to Earth, divided by the 11.186 km/s needed to leave Earth's gravity. It is travelling a lot faster than we can throw things.
- Speed against Earth in orbit
- 0.65 timesDivided by Earth's own orbital speed of 29.78 km/s around the Sun.
- Time to cross the UK
- 50.1 secondsLand's End to John o' Groats is about 970 km in a straight line. Divided by its speed.
- Time to fly the miss distance
- 43.7 daysThe miss distance divided by its speed. This is how long it needs to cover a gap of that size, which is a measure of how near or far the pass is.
- Light takes to cross the gap
- 243.5 secondsMiss distance divided by the speed of light.
- Width from brightness alone
- 52 to 115 mAstronomers estimate size from how bright an asteroid is (H 23.6) and how reflective it is. A shiny rock (albedo 0.25) is smaller than a dark one (0.05) for the same brightness. NASA's own estimate above uses the same idea.
- Laps of the Sun since first spotted
- 7.42,268 days of observation divided by its 306-day year.
- Known close approaches, 1900 to 2200
- 1890 inside the Moon's orbit and 1 within ten lunar distances.
- Closest pass in that period
- 7.81 lunar distancesOn 24th February 2073.
- Next visit after this one
- 9th May 2027At 107.4 lunar distances. Closer than this time.
- Average gap between visits
- 1.6 yearsThe span of the record divided by the number of gaps between approaches.
- Rank by size
- 24 of 42Among every asteroid this site has tracked, biggest first.
- Rank by closeness
- 42 of 42Among every asteroid this site has tracked, using each one's most recent pass, closest first.
- Rank by speed
- 7 of 42Among every asteroid this site has tracked, fastest first.
How reliable are these?
Width, speed, miss distance and orbit come straight from NASA. Mass, energy, volume and the rankings are our own arithmetic on top, and the assumptions are written beside each one. NASA publishes a range for width because nobody has seen most of these rocks up close, so wherever we show one number it uses the biggest estimate and says so.
Will asteroid 2016 ED156 hit Earth? Questions answered
Will asteroid 2016 ED156 hit Earth?
No. 2016 ED156 passes Earth on 13th November 2026 at 189.8 lunar distances (72,990,676 km), which is 189.8 times the distance to the Moon. It is not on NASA's potentially hazardous list. It is not on NASA's Sentry impact-risk watch list.
How big is asteroid 2016 ED156?
NASA estimates it is between 52 m and 115 m wide, which at the top end is about 1.1 football pitches long. Nobody has seen it up close, so the width is an estimate from its brightness.
How fast is asteroid 2016 ED156 travelling?
19.3 km/s relative to Earth at closest approach, about 69,655 km/h (43,281 mph). That is 2.5 times the speed of the International Space Station.
Is 2016 ED156 a potentially hazardous asteroid?
No. NASA gives the label to asteroids whose orbit comes within 0.05 astronomical units of Earth's (about 7.5 million km) and which are bigger than roughly 140 m. 2016 ED156 has an absolute magnitude of 23.6 and its orbit comes within 0.019 AU of Earth's.
When is asteroid 2016 ED156's next close approach?
After this pass, the next one in NASA's record is on 9th May 2027, at 107.4 lunar distances.
Unhelpful facts
- If this one did hit Earth, your next meeting would be cancelled. Look on the bright side.
- About 1.1 football pitches long. Still no better than a mid-table side.
- It passes today. Your dog already knows and is not saying anything.
- At this speed it covers the distance to the Moon in 5.5 hours. Your train replacement bus takes longer.
- Flying a gap that size takes it 43.7 days, which is 3,143 twenty-minute naps. Recommended.
- Light crosses the gap in 243.47 seconds. That is not enough time to say "what was that".
- 480 basketballs wide. Somebody in the NBA has already asked for the numbers.
- If it did hit, that would release roughly 108 megatons of TNT, assuming solid rock. It will not, so enjoy the number.
- Misses by 189.8 times the distance to the Moon. The Moon has not filed a complaint.
- Line up 19 elephants to match its width. The elephants would like to be consulted first.
- It is moving 199 times faster than a sports car, and has never once paid a congestion charge.
- It could overtake 77 commercial jets, and it would not even signal.