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During the last observing run with the ESA 1-m telesope on Tenerife (the OGS = Optical Ground Station) the SSA-NEO programme successfully recovered three 'lost' NEOs. In addition, one new NEO was...
A little-known asteroid will skim past Earth on 15 February, passing just 28 000 km from our planet. The 50 m-diameter chunk of space rock was discovered last year by ESA-sponsored amateur...
While the sky becomes more and more continuously scanned by ground and space-based NEO surveys, discovering objects in unusual orbital configurations represents the new frontier. Their dynamics...
Last month, ESA's near-Earth asteroid coordination centre triggered a series of European observations that confirmed an unknown object was, in fact, of human origin. The confirmation was the...
Soon after having been spotted in the sky on 8 October 2013 from the Crimean Astrophysical Observatory (Ukraine), asteroid 2013TV135 topped the Risk Page. Being a relatively large object (500 m in...
On 8 November 2013 asteroid 2013 TV135 has been removed from the Risk Page. The non-zero impact probability spotted by monitoring systems just after its discovery (on 8 October 2013) dropped...
If an asteroid is discovered which could come very close to Earth, it is important to coordinate observational activities quickly to better know its precise flyby distance.This is illustrated by...
The first recovery campaign carried out by the ESA NEO Coordination Centre in coordination with ESO, using the Very Large Telescope (VLT) (VLT telescopes on the Paranal mountain in Chile (credit:...
A team of European astronomers has found a previously unknown comet, detected as a tiny blob of light orbiting our Sun deep in the Solar System.
After discussing what to do to ensure that an important NEO is adequately monitored (see "news archive"), we will now present a possible strategy to improve the orbit of old objects, that have not...
The observational component of NEO science is an extremely important part of the impact mitigation effort, since observations are the input data for all the computational models used to predict...
The ESA Optical Ground Station has quickly become a major asset for the NEO Coordination Centre, thanks to the many nights devoted to observing asteroids. It is located at an altitude of 2400 m on...
Spotting Earth-threatening asteroids is tough partly because the sky is so big. But insects offer an answer, since they figured out long ago how to look in many directions at once.
Each year, astronomers worldwide discover over 1000 new asteroids or other space rocks that could strike our planet. And if one is spotted heading towards Earth, experts working in ESA and national...
One of the major goals of the ESA NEO Coordination Centre is to focus observations on objects with non-zero impact probabilities. When an asteroid quickly becomes very faint just after discovery...
An object discovered on 3 October 2015, temporarily designated WT1190F by the observers, will enter the Earth's atmosphere on 13 November. It was discovered by the Catalina Sky Survey...
The impact of WT1190F in the Indian Ocean on 13 November (see our news item on 22 October) provided an excellent opportunity to simulate the observational sequence that needs to be triggered...
Asteroid 2016 RB1 has hit the news because of a peculiar close passage on 7 September 2016 at 19:20 CEST. About the size of a cottage, the asteroid flew past our planet at an altitude of 34000 km,...
The number of known near-Earth asteroids (NEAs) has just surpassed the threshold of 15000. That is a 50% increase over the number known in 2013, when we posted a similar news item on our portal for...
The word "precovery" has entered the astronomical jargon rather recently but it quickly grew in popularity among asteroid hunters. It refers to the finding of an archival observation of an object...
NELIOTA is an activity initiated by the European Space Agency (ESA), which was recently launched at the National Observatory of Athens. The project aims to count and characterise the number and...
An international campaign has revealed that an asteroid will come within 44 000 km of our planet in October, providing a rare opportunity for intensive studies. Astronomers recently spotted...
As part of an international observing campaign, the OSIRIS-REx spacecraft has been imaged during our normal monthly observing run on 16 September with the OGS telescope in Tenerife. In the attached...
A few weeks ago the Pan-STARRS survey discovered a new NEO, temporarily identified as P10G8tt and then formally designated 2018 AM12. Follow-up observations over the next few days allowed the...
During the first month of 2018 two objects reached a Torino Scale level of 1, and attracted the attention of observers with the goal of collecting additional observations necessary to remove the...
At approximately 09:30 UT on 14 April 2018 the Catalina Sky Survey, in Arizona, discovered a bright magnitude 15 object moving at a sky speed of 10" per minute, in the constellation Libra. ...
Every few hours observing the Moon, ESA’s ‘NELIOTA’ project discovers a brilliant flash of light across its surface – the result of an object hurtling through space and striking our unprotected...
New observations of asteroid Apophis rule out any chance of impact for at least a century
ESA’s Planetary Defence Office has just released a new NEOCC web portal
Additional information
Detecting an asteroid beyond telescope normal operation
First light of ESA's Test-Bed Telescope in Chile
NEOCC observations help in nailing down the orbit of 2021 PH27
On 19 October the Pan-STARRS telescope, one of the NASA-funded surveys dedicated to discovering new NEOs, found an object that proved to be extremely unique: for the first time, an asteroid...
ESA has inaugurated the new building for the NEOCC at ESRIN
NEOCC portal provides automated access to most of its data
The importance of accurate star catalogues and image archives for Planetary Defence
NEO Chronology Last update: 2021-11-01 06:00 UTC The updating of the NEO Chronology is currently on hold. Courtesy of Karel A. van der Hucht Last version 121.0 Download:.PDF For an explanation...
Typical behaviour of a non-impacting object in the risk list
Large NEA steadily going out of the long-term risk list
Riskiest asteroid in the last months removed from the risk list
The image archive with capabilities to search and download selected image data
2021 PDC Impact Excercise
Last update: 2021-04-28 14:30 UTC This webpage does not describe a real potential asteroid impact. The information on this page is fictional and provided only to support an emergency response...
Last update: 2021-04-28 14:30 UTC Latest: 2021 PDC Impact Excercise This webpage does not describe a real potential asteroid impact. The information on this page is fictional and provided only...
This new astronomical tool gives the user the possibility to visualise NEO orbits and asteroids collections in full detail within a highly configurable 3D environment
Event to be held at ESOC (Germany) on 12-14 December 2022
October marks the first decade of the NEOCC portal
The object produced a bright fireball over the Great Lakes area
Aegis, a more performant and precise OD/IM software
Registration is open for the ESA NEO and Debris Detection Conference - Exploiting Synergies, which will be held at ESA/ESOC, Darmstadt, Germany, 22 - 24 January 2019. The deadline for the...
NEO Information Centres NEODyS - The Near-Earth Object Dynamic Site https://newton.spacedys.com/neodys/ AstDyS - The Asteroids Dynamic Site https://newton.spacedys.com/astdys/ The Minor Planet...
ESA's Optical Ground Station (OGS) is a facility built by ESA to support tests of optical communication between Earth and orbiting satellites. The instrument is routinely used by ESA's Space Safety...
An interesting connection between Earth Observation and NEO monitoring activities has been unveiled through the NEO Coordination Centre participation at the "Big Data From Space" meeting, held at...
ESA and national disaster response offices recently rehearsed how to react if a threatening space rock is ever discovered to be on a collision course with Earth. Last month, experts from ESA's...
ESA’s expanding observational network forms the first pillar of its programme for planetary defence. Thanks to a number of telescopes either directly owned, funded or in scientific agreement with...
Directly the PDO manager Richard Moissl Head of the Planetary Defence Office Space Safety Programme ESA/ESRIN, Frascati, Italy richard.moissl[@]esa.int
The Image Archive search form allows to explore and find images collected during dedicated observation campaigns. The search filter is based on: Observatory. IAU code and name of the...
The table in this page contains information about objects that were in the Risk List and were subsequently removed, because no virtual impactors within the next 100 years were found after a given...
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