Nice article about #TeamRadar by Nola Taylor Tillman in Space.com today:
#TeamRadar
#TeamRadar presentations at #PDC2025, continued:
Pupillo et al., "Radar Observation of Asteroids 2005 LW3 and 2006 WB with European Radio Telescopes" - https://iaa.4hdt.ro/event/1/contributions/111/ .
Venditti et al., "The potentially hazardous binary asteroid (285263) 1998 QE2" - https://iaa.4hdt.ro/event/1/contributions/150/
#TeamRadar presentations at #PDC2025 :
Benner et al., "Status of Near-Earth Asteroid Radar Observations at Goldstone" https://iaa.4hdt.ro/event/1/contributions/140/
Brozovic et al., "3D shape model and spin state of 99942 Apophis estimated from 2013 radar and lightcurve data" https://iaa.4hdt.ro/event/1/contributions/9/
Calves et al., "Radar and optical tracking of Near-Earth Objects at the University of Tasmania" https://iaa.4hdt.ro/event/1/contributions/105/
Horiuchi et al., "Southern Hemisphere Asteroid Radar Program (SHARP)" https://iaa.4hdt.ro/event/1/contributions/17/
#WithoutNSF we would not have had the Arecibo Observatory until 2020; and we would not have the Green Bank Telescope, the Very Large Array, or the Very Long Baseline Array - all of which #TeamRadar has used to make sure that asteroids are not going to fall from the sky.
Today in the Planetary Science Journal:
Zambrano-Marin et al. 2025, "2020 BX12—The Last Binary Asteroid Discovered at Arecibo"
For comparison: Operating costs for #TeamRadar are about $1 per second of observing time.
QT David Shiffman, Ph.D.
@whysharksmatter.bsky.social
2025 April 15
In the wake of the ongoing disasters with funding streams, I'm seeing lots of folks suggest that scientists turn to social media crowdfunding to fund their research.
For about a decade I held the record for the social media crowdfunded project that got the most funding. I received about $9,000.
https://bsky.app/profile/whysharksmatter.bsky.social/post/3lmrm6phwjc2s
#TeamRadar #Apophis planning page, with the hope that we can do all of this 4 years from now: https://echo.jpl.nasa.gov/asteroids/apophis.2029.goldstone.planning.html
#TeamRadar presentations at #Apophis T-4:
Benner et al., "Goldstone Radar Observations of 99942 Apophis in 2029: Detailed Plans" - https://www.hou.usra.edu/meetings/apophis2025/pdf/2058.pdf
Horiuchi et al., "Southern Hemisphere Asteroid Radar Program (SHARP) and the Apophis Encounter in 2029" - https://www.hou.usra.edu/meetings/apophis2025/pdf/2037.pdf
It has also been nearly 20 years now since I got to help observe #Apophis with the Arecibo Observatory as a #TeamRadar summer student.
Woah.
For the record:
Detectability per unit time of Cebreros transmitting 20 kW at X-band with a 35 m dish is about ~1 billion times less than detectability per unit time for #TeamRadar transmitting CW from Goldstone and ~10 billion times less than for Arecibo.
Assuming a real-time waltz.
Today on the #arXiv:
Tortora et al. 2025, "Radio Science Investigations for the Heavy Metal Mission to Asteroid (216) Kleopatra" - https://arxiv.org/abs/2503.15217
The Heavy Metal mission proposal would visit Kleopatra, understood as the barely-not-disrupted core of a protoplanet.
#TeamRadar approves.
And I recommend these two #TeamRadar presentations:
Benner et al. 2025, "Status of Near-Earth Asteroid Radar Observations at Goldstone" - https://www.hou.usra.edu/meetings/lpsc2025/pdf/1803.pdf
Fernandez et al. 2025, "Rotationally-Resolved Radar Scattering Properties of (433) Eros" - https://www.hou.usra.edu/meetings/lpsc2025/pdf/2421.pdf
Today on the #arXiv:
Cannon et al. 2025, "Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations" - https://arxiv.org/abs/2503.01499
Richard Cannon did good work on this latest from #TeamRadar.
#TeamRadar is obvious from a long way away.
QT Phil Plait @badastro
2025 February 28
So let's say you're an alien and you point your telescope at Earth.
What do you see?
[written by me, for SciAm]
https://www.scientificamerican.com/article/do-aliens-know-were-here/
@michael_w_busch Yikes! #TeamRadar have more disturbing observing stories than most.
For planetary scientists & astronomers:
#TeamRadar is holding a workshop on asteroid radar shape modeling this year, if you know any interested students or post-docs - https://sites.google.com/view/armw25.
The workshop is being done primarily virtually; with in-person sessions in Spain and Finland.
Thanks go to the organizing committee!
Today in the Planetary Science Journal:
Selmi et al. 2025, "Cross Validation of Albedo Determination for 1627 Ivar from Three Different Techniques" - https://iopscience.iop.org/article/10.3847/PSJ/ada563
Ivar was a particularly early target for #TeamRadar , so I am pleased to see Steve Ostro referenced in this paper.
Today on the #arXiv:
White et al. 2025, "Development of Radar and Optical Tracking of Near-Earth Asteroids at the University of Tasmania" - https://arxiv.org/abs/2502.02890
Describing CW transmit from Tidbinbilla and receiving at Hobart, Katherine, and Ceduna. #TeamRadar
It's great to see this published!
Sofia Sheikh and company have confirmed that the most detectable evidence of technology on Earth is leakage from the Arecibo Radar followed by the Goldstone Solar System Radar. #TeamRadar
Followed by atmospheric emissions like NOx.
Today on the arXiv:
Virkki & Yurkin 2025, "Microwave scattering by rough polyhedral particles on a surface" - https://arxiv.org/abs/2501.10019
Further exploring some aspects of how radar properties are determined by particle size, shape, and composition.
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