2024 YR4
(c) ESO/O. Hainaut et al., CC BY 4.0
2024 YR4 • Solen • Merkur • Venus • Jorden • Mars
2024 YR4 er en asteroide på mellem 40 og 90 meter i diameter, klassificeret som en Apollo-asteroide (Jordkrydsende) nærjordsasteroide.[3]
2024 YR4 blev opdaget af den chilenske station af Asteroid Terrestrial-impact Last Alert System (ATLAS) den 27. december 2024.[4][5] Pr. 26. februar 2025 blev 2024 YR4 vurderet til 0 på Torino-skalaen med en 1 ud af 91.000 (0,0011%) chance for at påvirke Jorden den 22. december 2032.[6] NASA giver en Palermo Technical Impact Hazard Scale-vurdering på -3,61 for 2024 YR4, hvilket svarer til en påvirkningsfare på 0,02% af baggrundsfareniveauet.[6]
Opdagelsen har udløst det første skridt i planetariske forsvarsreaktioner, hvor alle tilgængelige teleskoper bliver bedt om at indsamle data om objektet.[7][8]
Pr. 24. februar 2025 blev det oplyst af NASA, at der er 1,7% chance for at 2024 YR4 påvirker Månen.[9]
Referencer
- ^ Chandler, David L. (28. januar 2025). "Newly Discovered Asteroid Has Slight Chance of Earth Impact in 2032". skyandtelescope.org. Hentet 28. januar 2025.
- ^ "International Asteroid Warning Network (IAWN) Potential Asteroid Impact Notification" (PDF). International Asteroid Warning Network. 29. januar 2025. Hentet 29. januar 2025.
- ^ "Asteroid 2024 YR4 reaches level 3 on the Torino Scale". NASA. Hentet 11. februar 2025.
- ^ Minor Planet Center Staff (27. december 2024). "MPEC 2024-Y140 : 2024 YR4". Minor Planet Electronic Circular. Minor Planet Center. Bibcode:2024MPEC....Y..140W. doi:10.48377/MPEC/2024-Y140. Hentet 27. januar 2025.
- ^ "2024 YR4". Minor Planet Center. Hentet 27. januar 2025.
- ^ a b "(2024 YR4) – Earth Impact Risk Summary". Center for Near-Earth Object Studies. NASA. 12 februar 2025. Arkiveret fra originalen 28 januar 2025. Hentet 12 februar 2025.
{{cite web}}: CS1-vedligeholdelse: Dato automatisk oversat (link) - ^ Sample, Ian (30. januar 2025). "Asteroid triggers global defence plan amid chance of collision with Earth in 2032". The Guardian. Hentet 30. januar 2025.
- ^ Andrews, Robin George (29. januar 2025). "Astronomers Are Keeping an Eye on This Asteroid's Odds of Hitting Earth". The New York Times. Hentet 30. januar 2025.
- ^ Wasser, Molly L (19. februar 2025). "Dark Skies Bring New Observations of Asteroid 2024 YR4, Lower Impact Probability". NASA. Arkiveret fra originalen 20. februar 2025. Hentet 19. februar 2025.
| Solen og planeterne | |
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| Andre objektklassificeringer i solsystemet: | |
| Andre objekter med bane i og uden for solsystemet: | |
Eksterne henvisninger
- at NeoDyS-2, Near Earth Objects—Dynamic Site
- at ESA–space situational awareness
- at the JPL Small-Body Database
- Close approach fact sheet for asteroid 2024 YR4, ESA's NEO Coordination Centre
- Images of 2024 YR4, taken by ATLAS in January 2025, at b612.ai
- Light curve of 2024 YR4 by Petr Pravec, Ondrejov Asteroid Photometry Project
Medier brugt på denne side
Animation of 2024 YR4 around Sun - 2032 close approach.gif
Forfatter/Opretter: Phoenix7777, Licens: CC BY-SA 4.0
Animation of 2024 YR4 around Sun - 2032 close approach
▇ 2024 YR4 · ▇ Sun · ▇ Mercury · ▇ Venus · ▇ Earth · ▇ Mars
Forfatter/Opretter: Phoenix7777, Licens: CC BY-SA 4.0
Animation of 2024 YR4 around Sun - 2032 close approach
▇ 2024 YR4 · ▇ Sun · ▇ Mercury · ▇ Venus · ▇ Earth · ▇ Mars
2024 YR4 size comparison.png
Forfatter/Opretter: Sinucep, Licens: CC0
Comparison of the dimensions of 2024YR 4 and other bodies. The dark inner circle indicates the minimum diameter, the light outer circle indicates the maximum diameter.
Forfatter/Opretter: Sinucep, Licens: CC0
Comparison of the dimensions of 2024YR 4 and other bodies. The dark inner circle indicates the minimum diameter, the light outer circle indicates the maximum diameter.
2024 YR4 ESO-VLT.gif
(c) ESO/O. Hainaut et al., CC BY 4.0
This is a sequence of observations of the Near Earth Asteroid 2024 YR4 carried out with ESO’s Very Large Telescope in January 2025, shortly after it was discovered in December 2024. The images have been aligned so that the asteroid remains fixed at the centre of the frame, while the stars appear to move in the background. Follow-up observations such as this one have found that, as of 29 January 2025, it has an almost 99% chance of safely passing Earth on 22 Dec 2032, but a possible impact cannot yet be entirely ruled out.
(c) ESO/O. Hainaut et al., CC BY 4.0
This is a sequence of observations of the Near Earth Asteroid 2024 YR4 carried out with ESO’s Very Large Telescope in January 2025, shortly after it was discovered in December 2024. The images have been aligned so that the asteroid remains fixed at the centre of the frame, while the stars appear to move in the background. Follow-up observations such as this one have found that, as of 29 January 2025, it has an almost 99% chance of safely passing Earth on 22 Dec 2032, but a possible impact cannot yet be entirely ruled out.
2024 YR4 risk corridor.png
Forfatter/Opretter: Daniel Bamberger (Renerpho), Licens: CC BY-SA 4.0
Impact risk corridor for Near Earth asteroid 2024 YR4, for the possible impact on 22 December 2032. Created with the free SOLEX/EXORB software package.
Forfatter/Opretter: Daniel Bamberger (Renerpho), Licens: CC BY-SA 4.0
Impact risk corridor for Near Earth asteroid 2024 YR4, for the possible impact on 22 December 2032. Created with the free SOLEX/EXORB software package.