Overview
- NASA shared composite views and time‑series from Hubble, Psyche and Lucy during a Nov. 19 briefing that included public Q&A via #AskNASA.
- Radio astronomers reported hydroxyl emissions on Nov. 18, a water‑activity marker that reinforces the comet classification.
- Scientists note rapid brightening and a modest non‑gravitational acceleration consistent with gas‑jet outgassing rather than propulsion.
- Spectral observations indicate abundant carbon dioxide and reports of nickel and unusual dust signatures that remain under analysis.
- The object poses no threat to Earth and is expected to pass at about 1.8 AU (roughly 270–275 million km) on Dec. 19 before departing the Solar System.