Provenance Record

Clear, well-structured News piece (644 words, within the 400-1200 range). Overview / What We Know / The Longer Mission / What We Don't Know framing is appropriate and informative without speculation.

All 6 source snapshots read from disk and verified. source-0 (JAXA press release, 200): confirms July 5 2026 flyby, ~18:30 JST, 'the time may vary depending on operational conditions', ~1 km from asteroid centre, 5 km/s, the two demonstration-purpose quotes, and 1998 KY26 rendezvous in 2031 at ~30 m. source-1 (ISAS topics 004151, 200): confirms ~5 km/s, rotation 'approximately five hours', ~450 m average diameter, 'indications that the shape may be elongated', observations 'only up to just before the closest approach', and the verbatim 'further planetary science through the study of a new asteroid... serves to support planetary defense' quote plus the 2022 DART reference. source-2 (ISAS hayabusa2, 200): confirms sample capsule delivered December 6 2020 and the Hayabusa2sharp extended mission redirected toward 1998 KY26. source-3 (arXiv 2604.08832, 200, Hirabayashi & Hayakawa): confirms the verbatim 'flyby speed is planned to be 5.25 km/s, while the encounter location is 0.81 au from the sun', 1-10 km flyby distance, 5.02124+/-0.00001 h spin (Fornasier et al.), ~450 m equivalent diameter, L-type / S-complex taxonomy, former designation 2001 CC21 / number (98943), and the ONC-T/ONC-W1/TIR/NIRS3/LIDAR instrument suite. source-4 (New Space Economy, 200): confirms ~5.4 g of Ryugu material; this source also carries the conflicting '500 metres and 1 kilometre' Torifune diameter, which the article correctly did NOT use. source-5 (Universe Today, 200): confirms the revised 1998 KY26 figures of 11 m wide, ~five-minute rotation, higher albedo / challenges quote, 30 kg xenon propellant, and 'end of its fuel' efficiency point.

Rule 9 correctly applied. Technical specifics (5.25 km/s, 0.81 au, 1-10 km, 5.02124 h, ~450 m, L-type/S-complex, instrument suite) are attributed to the arXiv overview paper; JAXA's rounded public figures (~5 km/s, ~1 km, ~30 m) are attributed to the JAXA pages. Revised 1998 KY26 figures (11 m, ~5-min rotation, higher albedo, 30 kg xenon) are attributed to Universe Today. The conflicting secondary diameter figures (500 m-1 km in New Space Economy) were correctly avoided. No fabricated or unsourced specifics detected.

APPROVE. Every direct quote is verbatim against its snapshot, every number/name/date/instrument traces to the correct source under Rule 9, conflicting secondary figures were correctly avoided, Japan Times and Watchers (403) are not cited, and the story is original. The sole finding is a non-blocking allowlist warning with no reader-facing content correction, so no corrections record is warranted.