Our Mission

IAWN was established (2013) as a result of the UN-endorsed recommendations for an international response to a potential NEO impact threat, to create an international group of organizations involved in detecting, tracking, and characterizing NEOs. The IAWN is tasked with developing a strategy using well-defined communication plans and protocols to assist Governments in the analysis of asteroid impact consequences and in the planning of mitigation responses.

Currently, IAWN includes members from Europe, Asia, South and North America.

About IAWN

Observers Twitter feed

Tweets from some of our observing signatories and other active asteroid observers.

Signatories Twitter feed

Tweets from some of our institutional signatories (may have non-asteroid news as well).

NEO News

Timing Campaign -- 2019 XS

(04 Oct 2021) This will be a short campaign to observe 2019 XS at its close approach in early November. Registered observers will have their MPC submissions reviewed for any timing issues.
Read More: 2019 XS Timing Campaign


Latest from IAWN

Illustration of linear least squares.
Courtesy: Oleg Alexandrov, Wikimedia Commons

Understanding Orbital Uncertainties in the Context of Impact Predictions

(Aug 2021) II: Orbit Fitting-Least Squares Technique for Orbit Estimation
Second in a series of articles detailing the concept of orbital uncertainties as it relates to impact predictions. Celestial mechanics can be a complicated subject, but here we'll try to distill some of these difficulties and render the subject a bit more transparent.
Read More: Least Squares Technique for Orbit Estimation

Close Approaches

Asteriod designation: 2021 UL
Discovery station: Catalina Sky Survey
Close approach date (UTC): 2021 10 16.51
Close approach distance (× lunar distance): 0.09
Discovery announcement
Latest orbit & observations

Close Approach List

Multi-Opp. CAs