Daniel Fischer @[email protected]
@cosmos4u
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All things astronomy and space - in tiny bits and pieces but mostly with links to more ... :-) Also on https://t.co/lye0UYWnL4 and https://t.co/PboT4txmBw
Bochum, Germany
Joined October 2008
@StevearenoBR Can I identify the actual telescopes used for this astrometry? With the brightness now down to ~23.5 mag. it would be interesting to know who's still able to contribute. (Just listened to a very detailled talk by an ESA Planetary Defense man, so I'm eager for hard numbers. :-)
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RT @tony873004: Here are 70 clones of #asteroid 2024 YR4 that do hit Earth, highlighting the impact risk corridor. There are some big citie…
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@YR4tracker @NASA @NASAJPL @SpaceX @blueorigin One should always cite the current results from all three (leading) systems:
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RT @NASAAmes: CAPSTONE’s mission has been extended through Dec. 2025! 🌕 CAPSTONE will continue to test and refine navigation software on i…
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A Candidate High-velocity Exoplanet System in the Galactic Bulge: -> NASA Scientists Spot Candidate for Speediest #https://www.nasa.gov/universe/nasa-scientists-spot-candidate-for-speediest-exoplanet-system/Exoplanet System
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Tracing the Propagation of Shocks in the Equatorial Ring of SN 1987A over Decades with the Hubble Space Telescope: -> Evolution of a #Supernova Ring:
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Euclid - a complete Einstein ring in NGC 6505: -> Euclid discovers a stunning Einstein ring / Euclid finds complete #EinsteinRing in NGC galaxy / Euclid Discovers Einstein Ring: / /
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@WIONews @susanmtehrani Interesting that you don't mention that Mumbai is smack in the risk corridor (which has been known for weeks): - and India is actually the only spacefaring nation in it. Talk to someone at ISRO about the implications!
@b612foundation has taken the orbit and uncertainty of asteroid 2024YR4, sampled 10K trajectories from the current uncertainty, and propagated them forward. 2.3% of those hit the Earth on Dec.22, 2032. Here is where they hit.
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@Astro_Jonny Given the risk corridor cutting only through the Global South with countries w/o space programs of their own (except India; no small bodies experience, though) do you really think NASA - if it still exists - and ESA and, gasp, Roskosmos would mount a billion dollar mission?
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RT @Rainmaker1973: Breaking Bad + Squid Games = the craziest 3 minutes you'll watch today. [🎞️ Alternative Cuts]
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@ptastro1 @YR4tracker @gblasco78 @AstroKirsten @mEitHan Strange, and use the very same data arc but get impact probabilities of 1.6 and 2.0 percent, respectively.
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@YR4tracker @gblasco78 @AstroKirsten @mEitHan With no new astrometry - and no old one found - why would p(impact) change? Trying to find out what it would take to at least initiate development of a deflector s/c. Lots of factors in play I reckon ...
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RT @planet4589: As noted by others, the Falcon 9 second stage from the Starlink 11-4 launch failed to make its deorbit burn, and was left…
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@YR4tracker @gblasco78 @AstroKirsten @mEitHan The shrinking of the uncertainty has slowed down so much that clarity about the outcome is unlikely to come before the asteroid is lost for good in spring -> I guess it'll remain a solid Torino 3 then, a maximally confusing situation for the following 3 years of invisibility.
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RT @gblasco78: @cosmos4u @AstroKirsten An updated plot of the evolution of nominal distance and uncertainty for 2024 YR4 with the JPL data…
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RT @deepbluedot: On 12 March the #HeraMission will perform a Mars gravity assist flying at about 5000km altitude and 300km from Deimos. The…
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@scute1133 @DJSnM Wonder whether they'll run with the hypothetical case at PDC'25 or replace it with real-life YR4 ... the conference comes at a time when presumably even Webb will just have lost sight of it.
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What an essay about the present state of the United States, no-holds-barred: - if you don't read German, cram it into an online translator!
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