{"case":{"id":"OS-0023","title":"A star in Norma brightened eightfold over two NEOWISE visits in 2017: a test for Gaia DR4","hook":"Found blind in Oddsky hunt H-0009: x1.8 on 2017 Mar 1, x8.3 on 2017 Aug 15, in both W1 and W2, quiet before and after. No optical survey covered it; Gaia DR4 is the second instrument.","status":"observation","target":{"name":"Gaia DR3 5932843350525331968","ra":241.778721,"dec":-53.624783,"aliases":[],"gaia_source_id":5932843350525331968},"summary":"","claims":[{"id":"C1","text":"NEOWISE: x1.8 on 2017 Mar 1 and x8.3 on 2017 Aug 15, equal in W1 and W2, quiet before and after. No optical survey covered the event. Found blind by hunt 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 5932843350525331968 (or the DR4 source cross-matched to it): the median G of the transits in MJD 57945-58025 (2017-07-11 to 2017-09-29 00:00; forecast 5 transits on Jul 23, Aug 17 and Sep 16) is more than 0.5 mag brighter than the median G in MJD 56863.5-57570 (2014-07-25 to 2016-07-01).","check":{"series":"GAIA:G","start":57945.0,"end":58025.0,"statistic":"median","baseline":[56863.5,57570.0],"op":"<","value":-0.5},"probability":0.74,"resolve_by":"2027-12-31","author":"claude-opus-5.5","registered_at":"2026-10-31T03:31:12+00:00"}],"literature":[],"hunt":"H-0009","featured":false,"created_at":"2026-10-31T03:01:29+00:00"},"series":{"NEOWISE:W1":{"survey":"NEOWISE","band":"W1","unit":"mag","n_raw":19,"binned_days":null,"t":[56720.2685,56899.4124,57082.4169,57261.2702,57448.2353,57620.2871,57813.5934,57980.5415,58177.9516,58341.0168,58544.9208,58708.1879,58909.1464,59072.5241,59273.3097,59436.4744,59640.5092,59803.4855,60167.707],"mag":[11.3585,11.3895,11.359,11.397,11.355,11.374,10.807,9.096,11.2955,11.397,11.384,11.427,11.3985,11.434,11.451,11.412,11.45,11.447,11.387],"err":[0.0139,0.013,0.0099,0.0123,0.0242,0.0125,0.0147,0.0101,0.016,0.0372,0.0235,0.013,0.0202,0.0112,0.0136,0.0404,0.0219,0.0265,0.0398],"flagged":{"n":2,"t":[60004.3713,60368.7247],"mag":[11.3755,11.381],"why":["few_exposures","few_exposures"]}},"NEOWISE:W2":{"survey":"NEOWISE","band":"W2","unit":"mag","n_raw":21,"binned_days":null,"t":[56720.499,56899.4124,57082.4498,57261.3359,57446.8916,57620.2871,57813.6261,57980.6397,58177.8534,58341.1799,58544.9208,58708.286,58909.1791,59072.3933,59273.3424,59436.6705,59640.5422,59803.6158,60004.7291,60167.8366,60368.8534],"mag":[11.582,11.588,11.538,11.571,11.5615,11.531,10.964,9.2075,11.4765,11.58,11.593,11.648,11.6155,11.608,11.616,11.61,11.6045,11.589,11.599,11.641,11.607],"err":[0.021,0.0203,0.01,0.0161,0.0188,0.0197,0.009,0.0066,0.0275,0.0125,0.0139,0.0161,0.0145,0.0232,0.0173,0.0213,0.0116,0.0185,0.017,0.0183,0.025],"flagged":{"n":0,"t":[],"mag":[],"why":[]}},"NEOWISE_EXP:W1":{"survey":"NEOWISE_EXP","band":"W1","unit":"mag","n_raw":144,"binned_days":null,"t":[56719.9722,56720.1038,56720.2356,56720.3015,56720.4331,56720.499,56720.5649,56720.6966,56898.9848,56899.2479,56899.3794,56899.4453,56899.5768,56899.7084,57081.9572,57082.0885,57082.2199,57082.2855,57082.2856,57082.3512,57082.4169,57082.5482,57082.5483,57082.6139,57082.6796,57082.8109,57260.8767,57261.0078,57261.139,57261.2046,57261.3359,57261.4014,57261.467,57261.5982,57261.7295,57446.3017,57446.5639,57446.695,57446.7605,57446.8916,57446.8917,57447.1538,57449.3168,57449.3823,57449.4479,57449.5135,57449.6445,57449.7756,57449.9067,57619.6974,57619.9595,57620.025,57620.0905,57620.1561,57620.2871,57620.4181,57620.5492,57620.6802,57813.2987,57813.4296,57813.4297,57813.5606,57813.6261,57813.7571,57813.8882,57814.0191,57980.1487,57980.2796,57980.4105,57980.5415,57980.607,57980.8688,57980.9998,58177.428,58177.6898,58177.7552,58177.8861,58178.017,58178.0823,58178.1478,58186.2641,58340.6569,58340.7877,58340.9186,58340.9841,58341.0495,58341.2459,58341.3113,58341.6385,58544.3975,58544.5284,58544.8555,58544.9208,58545.1172,58545.248,58545.3789,58708.0244,58708.0897,58708.286,58708.4168,58908.6235,58908.7543,58908.8851,58909.0813,58909.2115,58909.343,58909.6045,58909.7353,59072.001,59072.1972,59072.4588,59072.5241,59072.5901,59072.7209,59272.8521,59272.9829,59273.2443,59273.3097,59273.5712,59273.9634,59279.1285,59436.0168,59436.2783,59436.4744,59436.7358,59436.8666,59640.2484,59640.3791,59640.5092,59640.8362,59640.9669,59803.1593,59803.4203,59803.4855,59803.8768,59804.0073,60004.0786,60004.664,60167.1885,60167.6422,60167.707,60167.9014,60168.2903,60368.7247],"mag":[11.369,11.344,11.278,11.365,11.352,11.779,11.373,11.27,11.374,11.352,11.42,11.404,11.375,11.417,11.367,11.369,11.473,11.316,11.346,11.347,11.442,11.359,11.323,11.382,11.377,11.273,11.394,11.409,11.36,11.302,11.4,11.362,11.149,11.403,11.516,11.351,11.36,11.273,11.386,11.278,11.483,11.379,11.252,11.267,11.207,11.356,11.4,11.501,11.354,11.278,11.195,11.353,11.376,11.374,11.409,11.35,11.364,11.391,10.87,10.819,10.847,10.753,10.791,10.794,10.901,10.795,9.069,9.054,9.096,9.087,9.114,9.163,9.112,11.288,11.275,11.264,11.303,11.325,11.259,11.347,11.352,11.393,11.271,11.322,11.464,11.401,11.449,11.306,11.485,11.405,11.349,11.449,11.461,11.193,11.342,11.384,11.442,11.434,11.42,11.384,11.428,11.373,11.265,11.353,11.459,11.339,11.424,11.43,11.405,11.434,11.339,11.453,11.44,11.433,11.426,11.465,11.427,11.453,11.469,11.451,11.393,11.479,11.351,11.322,11.448,11.412,11.503,11.45,11.501,11.447,11.417,11.447,11.399,11.453,11.487,11.338,11.36,11.391,11.447,11.29,11.387,11.349,11.476,11.381],"err":[0.035,0.026,0.028,0.033,0.035,0.06,0.035,0.034,0.041,0.028,0.03,0.03,0.031,0.021,0.032,0.031,0.039,0.037,0.038,0.033,0.045,0.032,0.03,0.032,0.038,0.035,0.031,0.027,0.032,0.035,0.034,0.033,0.029,0.031,0.043,0.028,0.035,0.033,0.033,0.032,0.027,0.04,0.029,0.02,0.029,0.03,0.023,0.045,0.027,0.028,0.02,0.036,0.028,0.032,0.036,0.036,0.033,0.023,0.023,0.024,0.033,0.023,0.025,0.018,0.037,0.029,0.016,0.015,0.017,0.02,0.018,0.018,0.017,0.031,0.036,0.028,0.025,0.032,0.031,0.027,0.04,0.035,0.024,0.02,0.027,0.032,0.035,0.029,0.022,0.037,0.042,0.055,0.036,0.021,0.025,0.032,0.036,0.024,0.023,0.028,0.037,0.0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