{"_facts":{"companion":"","deep":"","dossier":"","gaia_eb":"","impression":"","period":"","planet":"Probably noise or an instrument effect","rare":"Microlensing (rogue planet?)","toi":""},"amplitude":"0.4%","bp_rp":"0.84","cover":"TIC137881251_s0021.png","data_used":"TESS sector 21 (QLP)","date":"2026-10-11","dec":"55.7833","depth":"2.8%","distance_pc":"445 (~1,452 light years)","found_by":"hunt.py (automatic)","gaia_dr3":"1044974961980864128","gaia_gmag":"12.52","gaia_lum":"1.45 x the Sun","gaia_mass":"0.94 x the Sun","gaia_radius":"1.26 x the Sun","gaia_rv":"speed changes by 61 km/s - likely an orbiting pair","gaia_teff":"5,647 K","history":[{"date":"2026-10-11","text":"Found by the automatic search in TESS sector 21"},{"date":"2026-10-11","text":"Rare-find check: Microlensing (rogue planet?)"},{"date":"2026-10-11","text":"Planet check: Probably noise or an instrument effect"}],"hr":[0.841,4.276],"last_update":"2026-10-11","nearest_variable":"Gaia DR3 1044973862469242496 (DSCT|GDOR|SXPHE), 226\" away","nearest_variable_id":"Gaia DR3 1044973862469242496","notes":"Probably noise or an instrument effect.\nRare, already known: Microlensing (rogue planet?) (in SIMBAD as ATO J150.5647+55.7832 (*); catalogued variable star nearby: Gaia DR3 1044973862469242496 (DSCT|GDOR|SXPHE), 226\" away).\n\nFound automatically by hunt.py in TESS sector 21 (flagged in 1 sector(s)). Detection score 133.7.\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: Microlensing (rogue planet?)\n2026-10-11  Found by the automatic search in TESS sector 21","period_days":"5.43738","period_source":"hunt.py on TESS QLP sector 21","planet_check":"Probably noise or an instrument effect","planet_size":"~21.6 Earth radii (~1.92 Jupiter)","planet_verdict":"fa","ra":"150.565","rare":"Microlensing (rogue planet?)","rare_checked":"2026-10-11 16:47","rare_clear":["Exocomet-shaped dip","Habitable zone & size","Transit timing (TTV)","Transit duration (TDV)","Changing transit depth","Lopsided transit","Dimming beside the transit","Trojan companions (L4/L5)","Type of star"],"rare_device":"GPU: NVIDIA GeForce RTX 4070 (CUDA, CuPy)","rare_flags":[{"id":"microlensing","level":"candidate","name":"Microlensing (rogue planet?)","text":"A one-off, symmetric brightening at BTJD 2627.46 that fits the gravitational-lens shape better than a flare (Einstein time 0.7 h). Events this short can be made by a free-floating (rogue) planet passing in front of the star. Very rare in TESS data; scattered light and asteroids can mimic it."}],"rare_known":true,"rare_known_why":["in SIMBAD as ATO J150.5647+55.7832 (*)","catalogued variable star nearby: Gaia DR3 1044973862469242496 (DSCT|GDOR|SXPHE), 226\" away","in the ATLAS variable-star catalogue (Heinze et al. 2018) as J150.5647+55.7832","SIMBAD lists ATO J150.5647+55.7832 also as ATO J150.5647+55.7832"],"rare_level":"candidate","rare_n":12,"ruwe":"0.98 - fits a single star","score":"133.7","sector":21,"simbad_id":"ATO J150.5647+55.7832","simbad_name":"ATO J150.5647+55.7832 [*]","status":"Rare, already known","tic":"137881251","title":"TIC 137881251","tmag":"12.08","type":"Transit candidate"}