šØNASA Quietly Activates Planetary Defense Network for 3I/ATLAS Without Saying a Word
Buried in tonightās official MPEC (2025-U142) the Minor Planet Centerās internal bulletin is an editorial notice that says it all:
āAnnouncement of IAWN Comet Astrometry Campaign Nov. 27, 2025 ā Jan. 27, 2026.ā
āThe campaign will target comet 3I/ATLAS (C/2025 N1).ā
Be clear that this is not a Reddit rumor, 4chan leak, this is straight from the IAU, hosted on Harvardās Minor Planet Center, issued on behalf of NASAās International Asteroid Warning Network, the same group that coordinates global tracking in planetary-defense scenarios.
So this is whats happening, for the first time in history, an interstellar object namely 3I/ATLAS has been formally enrolled in a planetary defenseālevel observation campaign.
Theyāre calling it āa test of improved astrometry methods.ā
In other words the object isnāt behaving like it should.
The bulletin admits it:
āCometary bodies are extended⦠features that can systematically pull their centroid measurements off their central brightness peak.ā
Meaning that the light and the mass donāt line up.
Exactly the issue astronomers have been speaking about for months. 3I/ATLASās photometric center is offset from its orbital predictions.
Hereās the timeline they quietly outlined:
Workshop Nov 10
Kickoff meeting ā Nov 25
Global observing window ā Nov 27 to Jan 27
Close out telecon : Feb 3
That window covers perihelion through Earthās near pass when 3I/ATLAS will be closest, brightest, and most unstable.
So, after months of near total silence, NASA, ESA, and the IAU just activated the planetary defense network, but they did it under the cover of an āastrometry exercise.ā
No headlines or press kit. Just a quiet admission that the worldās largest observatories will now point at one object... 3I/ATLAS.
Letās be clear about this right now, this isnāt normal.
The IAWN doesnāt organize global campaigns for routine comets.
They test coordination on bodies that matter, potential hazards, anomalies, or high-interest targets.
And you donāt need to āimprove astrometryā unless your target refuses to follow standard math.
So yes they finally broke silence, but instead of a briefing, we got a bulletin, and instead of transparency, we got a PDF at 21:08 UT.
They can call it a ātraining exerciseā all they want but when every telescope from Mauna Kea to Chile is being synced on one object, thatās not a drill.
Source:
https://www.minorplanetcenter.net/mpec/K25/K25UE2.html