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Potentially Halcyon Object: 2023 YO1

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Taking a look at the boards- we have an object of some interest in Earth’s vicinity for the next few weeks.

2023 YO1, an Apollo-type NEO, was discovered at the tail end of 2023 (as its designation suggests). It just passed Earth Closest Approach (Jan. 10) of ~2,600,000 km (nothing unusual), and will be in our immediate vicinity til ~Jan 21. This fairly long pass (~Earth month) is no fluke: 2023 YO1 has a slow (Earth-relative) velocity, due to its Earthlike orbit. In turn, this close orbit (including relatively low inclination, 4.4 deg.) makes it an accessible object. The mission ∆v is, for the flight trajectories put out so far, ~4.12 km/s. This is not only quite low- among the handful of lowest asteroid flights on our tables.  But, like many NEO trips being put on the tables- it’s less energetic than a lander to Earth’s moon. Certainly a soft (powered, necessarily) lander, and lower in ∆v than a hard lander.Read More »Potentially Halcyon Object: 2023 YO1

Note, Paper: Pre-Flee ’23

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Some significant works before we close out “…Asteroid Autumn” and 2023. Via the generosity of Planetary Science Journal:

Marchi, S. Nesvorny, D. Vokrouhlicky, D. et al.  A Crater Chronology for the Jupiter’s Trojan Asteroids
Beniyama, J. Ohsawa, R. Avdellidou, C. et al.  Multicolor Photometry of Tiny Near-Earth Asteroid 2015…
Klimczak, H. Wilawer, E Kwiatkowski, T. et al.  Optimization of Future Multifilter Surveys Toward…
Li, J. Kim, Y. Jewitt, D. The Wagging Plasma Tail of Comet C2020S3 (Erasmus)

And from our western friends, Publications of the Astronomical Society of the Pacific:
Ofek, E. O. Shvartzveld, Y. Sharon, A. et al. The Large Array Survey Telescope – Pipeline. I. Basic…

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Read More »Note, Paper: Pre-Flee ’23