Overview

• JWST and SPHEREx observations report a strongly CO2-dominated coma, with CO2 to H2O near 8:1 and extended emission mapped in early August, based on preprint data.
• TESS image stacks reveal pre-discovery activity at roughly 6 AU, pointing to hypervolatile-driven sublimation far from the Sun.
• Hubble measurements place the nucleus radius near 2.8 kilometers, and SPHEREx saw no jets or tails during its August campaign.
• A Gaia-based arXiv study identifies 25 past stellar encounters but rejects any as a plausible source due to >20 km/s encounter speeds, favoring a thin-disk origin.
• Near-discovery SOAR photometry finds stable long-term brightness and attributes apparent ~0.8 magnitude spikes to seeing and field-star contamination, with all major results pending peer review.