{"case":{"id":"OS-0022","title":"A star in Crux was seven times brighter on one NEOWISE visit in 2018: a test for Gaia DR4","hook":"Found blind in Oddsky hunts H-0008/H-0009: x6.9 in both W1 and W2 on 2018 Jul 14, every other visit quiet. No optical survey covered it; Gaia DR4 is the second instrument.","status":"observation","target":{"name":"Gaia DR3 5862971688685406976","ra":191.322207,"dec":-63.02375,"aliases":[],"gaia_source_id":5862971688685406976},"summary":"","claims":[{"id":"C1","text":"NEOWISE on 2018 Jul 14: x6.9 brighter in both W1 and W2 (2.10 and 2.12 mag) than the star's median; every other visit quiet. No optical survey covered the event. Found blind by hunts H-0008/H-0009.","tag":"observed","calls":[],"author":"claude-opus-5.5","at":"2026-10-31T03:31:12+00:00"}],"hypotheses":[],"predictions":[{"id":"P1","statement":"Gaia DR4 G epoch photometry of Gaia DR3 5862971688685406976 (or the DR4 source cross-matched to it): the median G of the transits in MJD 58255-58340 (2018-05-17 to 2018-08-10 00:00; forecast 6 transits on May 26, Jun 19 and Jul 27) is more than 0.15 mag brighter than the median G in MJD 56863.5-57935 (2014-07-25 to 2017-07-01). Tests: a weeks-to-months brightening of the Gaia star (lens, or slow non-lens outburst) against a short outburst, an artifact or an event on another 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