{"_facts":{"companion":"3.1","deep":"","dossier":"","gaia_eb":"","impression":"","period":"","planet":"Probably noise or an instrument effect","rare":"Transit timing (TTV); Transits of a giant star","toi":""},"amplitude":"1.5%","bp_rp":"1.53","cover":"TIC421379346_s0016.png","data_used":"TESS sector 16 (QLP)","date":"2026-10-11","dec":"55.1701","depth":"1.1%","distance_pc":"1,295 (~4,223 light years)","found_by":"hunt.py (automatic)","gaia_dr3":"2183743342462933504","gaia_gmag":"12.31","gaia_lum":"31.07 x the Sun","gaia_mass":"2.70 x the Sun","gaia_radius":"8.64 x the Sun","gaia_teff":"4,633 K","history":[{"date":"2026-10-11","text":"Found by the automatic search in TESS sector 16"},{"date":"2026-10-11","text":"Gaia hints at a hidden companion star (RUWE 3.1)"},{"date":"2026-10-11","text":"Rare-find check: Transit timing (TTV); Transits of a giant star"},{"date":"2026-10-11","text":"Planet check: Probably noise or an instrument effect"}],"hr":[1.531,1.744],"last_update":"2026-10-11","nearest_variable":"WISE J204518.8+551044 (EA, P = 2.1 d), 38\" away (same period!)","nearest_variable_id":"WISE J204518.8+551044","notes":"Probably noise or an instrument effect.\nRare, already known: Transit timing (TTV); Transits of a giant star (the catalogued variable WISE J204518.8+551044 (EA, 38\" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable WISE J204518.8+551044).\n\nWARNING: same period as the known variable WISE J204518.8+551044 38\" away; the signal is probably its light leaking in.\nFound automatically by hunt.py in TESS sector 16 (flagged in 2 sector(s)). Detection score 178.6.\nNot in VSX, ASAS-SN or ZTF variable catalogues at the time of the search; not in Gaia DR3's variable lists.\nUnchecked by hand yet: verify the period, nearby stars and a wider catalogue search.\n\nUpdates:\n2026-10-11  Planet check: Probably noise or an instrument effect\n2026-10-11  Rare-find check: Transit timing (TTV); Transits of a giant star\n2026-10-11  Gaia hints at a hidden companion star (RUWE 3.1)\n2026-10-11  Found by the automatic search in TESS sector 16","period_days":"1.05063","period_source":"hunt.py on TESS QLP sector 16","planet_check":"Probably noise or an instrument effect","planet_size":"~89.5 Earth radii (~7.99 Jupiter) - too big for a planet","planet_verdict":"fa","ra":"311.338","rare":"Transit timing (TTV); Transits of a giant star","rare_checked":"2026-10-11 16:40","rare_clear":["Microlensing (rogue planet?)","Exocomet-shaped dip","Habitable zone & size","Transit duration (TDV)","Changing transit depth","Lopsided transit"],"rare_device":"GPU: NVIDIA GeForce RTX 4070 (CUDA, CuPy)","rare_flags":[{"id":"ttv","level":"candidate","name":"Transit timing (TTV)","text":"The transits arrive early or late by 15.7 min (typical error 3.7 min) repeating every ~2.0 orbits: something is tugging on the planet - another planet, or a moon."},{"id":"giant_host","level":"notable","name":"Transits of a giant star","text":"Gaia places this star among the giants: planets transiting giants are rare, and a big star makes even a large planet's dip tiny."}],"rare_known":true,"rare_known_why":["the catalogued variable WISE J204518.8+551044 (EA, 38\" away) has the same period - its light leaks into TESS's big pixels","same period as the known variable WISE J204518.8+551044"],"rare_level":"candidate","rare_n":10,"ruwe":"3.13 - hints at a hidden companion star","score":"178.6","sector":16,"simbad_name":"not in SIMBAD","status":"Rare, already known","tic":"421379346","title":"TIC 421379346","tmag":"11.53","type":"Transit candidate"}