{"_facts":{"companion":"3.8","deep":"","dossier":"","gaia_eb":"","impression":"","period":"","planet":"Already known to NASA: TOI 946.01 (FP)","rare":"Exocomet-shaped dip; Transit duration (TDV); Changing transit depth","toi":"TOI 946.01 (FP)"},"amplitude":"0.4%","bp_rp":"1.13","cover":"TIC219205407_s0028.png","data_used":"TESS sector 28 (QLP)","date":"2026-10-12","dec":"-51.4667","depth":"3.0%","distance_pc":"167 (~544 light years)","found_by":"hunt.py (automatic)","gaia_dr3":"5549740136101187840","gaia_gmag":"11.46","gaia_lum":"0.60 x the Sun","gaia_mass":"0.84 x the Sun","gaia_radius":"1.09 x the Sun","gaia_teff":"4,884 K","history":[{"date":"2026-10-12","text":"Found by the automatic search in TESS sector 28"},{"date":"2026-10-12","text":"Planet check: Already known to NASA: TOI 946.01 (FP)"},{"date":"2026-10-12","text":"Found on NASA's list of TESS planet candidates: TOI 946.01 (FP)"},{"date":"2026-10-12","text":"Gaia hints at a hidden companion star (RUWE 3.8)"},{"date":"2026-10-12","text":"Rare-find check: Exocomet-shaped dip; Transit duration (TDV); Changing transit depth"}],"hr":[1.125,5.346],"last_update":"2026-10-12","nearest_variable":"none within 5'","notes":"Already known to NASA: TOI 946.01 (FP).\nRare, already known: Exocomet-shaped dip; Transit duration (TDV); Changing transit depth (on NASA's TESS list as TOI 946.01 (FP); SIMBAD lists TOI-946.01 also as TOI-946.01).\nAlready on NASA's TESS list as TOI 946.01 (FP).\n\nFound automatically by hunt.py in TESS sector 28 (flagged in 7 sector(s)). Detection score 160.4.\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:\n2026-10-12  Rare-find check: Exocomet-shaped dip; Transit duration (TDV); Changing transit depth\n2026-10-12  Gaia hints at a hidden companion star (RUWE 3.8)\n2026-10-12  Found on NASA's list of TESS planet candidates: TOI 946.01 (FP)\n2026-10-12  Planet check: Already known to NASA: TOI 946.01 (FP)\n2026-10-12  Found by the automatic search in TESS sector 28","period_days":"6.12481","period_source":"hunt.py on TESS QLP sector 28","planet_check":"Already known to NASA: TOI 946.01 (FP)","planet_size":"~19.8 Earth radii (~1.77 Jupiter)","planet_verdict":"toi","ra":"92.834","rare":"Exocomet-shaped dip; Transit duration (TDV); Changing transit depth","rare_checked":"2026-10-11 16:46","rare_clear":["Microlensing (rogue planet?)","Habitable zone & size","Transit timing (TTV)","Trojan companions (L4/L5)","More planets in the system","Self-lensing binary","Type of star"],"rare_device":"GPU: NVIDIA GeForce RTX 4070 (CUDA, CuPy)","rare_flags":[{"id":"exocomet","level":"hint","name":"Exocomet-shaped dip","text":"A dip at BTJD 2336.42 that drops fast and recovers slowly (0.85% deep) - the shape of a comet's dusty tail passing the star (like Beta Pictoris)."},{"id":"tdv","level":"hint","name":"Transit duration (TDV)","text":"The transit length changes from one transit to the next beyond the errors - a sign of a wobbling orbit (moon) or a precessing orbit."},{"id":"depth_change","level":"hint","name":"Changing transit depth","text":"The dip depth changes by 16% between transits - a disintegrating planet trailing dust, starspots, or light from another star mixing in."},{"id":"asymmetry","level":"hint","name":"Lopsided transit","text":"The end of the transit is deeper than the start: a dust tail (disintegrating planet), rings, a fast-spinning star, or a blend."},{"id":"moon_dip","level":"hint","name":"Dimming beside the transit","text":"On average the star is 565 ppm dimmer just before and after the transit (17.7 sigma): what a moon (or ring/dust) travelling with the planet would cause. Instrument trends can do this too."}],"rare_known":true,"rare_known_why":["on NASA's TESS list as TOI 946.01 (FP)","SIMBAD lists TOI-946.01 also as TOI-946.01","in SIMBAD as TOI-946.01 (err)"],"rare_level":"hint","rare_n":12,"ruwe":"3.75 - hints at a hidden companion star","score":"160.4","sector":28,"simbad_id":"TOI-946.01","simbad_name":"TOI-946.01 [err]","status":"Rare, already known","tic":"219205407","title":"TIC 219205407","tmag":"10.87","toi":"TOI 946.01 (FP)","type":"Transit candidate"}