{ "known": true, "known_why": [ "in SIMBAD as TYC 4281-977-1 (*)", "catalogued variable star nearby: Gaia DR3 2011808964014371072 (E, P = 3.0535 d), 76\" away" ], "known_version": 5, "tic": "272832434", "version": 3, "when": "2026-10-11 16:37", "device": "GPU: NVIDIA GeForce RTX 4070 (CUDA, CuPy)", "seconds": 45.3, "kind": "transit?", "sectors": [ 17, 18, 24, 57, 58, 77, 78, 84, 85 ], "points": 54651, "signal": { "P": 1.656691, "T0": 1767.135594, "dur": 0.18, "depth": 0.012133, "rp": 167.476729, "source": "found here", "snr": 429.121204 }, "star": { "rad": 13.9364, "mass": 3.0, "teff": 9750.0, "logg": null, "abs_g": -0.8765, "bp_rp": 1.1337, "dist": 3115.5281 }, "flags": [ "ttv", "microlensing", "tdv", "giant_host" ], "best_level": "candidate", "headline": "Transit timing (TTV); Microlensing (rogue planet?); Transit duration (TDV)", "checks": [ { "id": "microlensing", "name": "Microlensing (rogue planet?)", "flag": true, "level": "hint", "text": "A one-off, symmetric brightening at BTJD 3417.33 that fits the gravitational-lens shape better than a flare (Einstein time 71.0 h). This length points to a star or brown dwarf as the lens. Very rare in TESS data; scattered light and asteroids can mimic it.", "details": { "t_btjd": 3417.325745, "tE_h": 71.049086, "u0": 0.05, "amp": 0.000507, "snr": 8.196187, "dchi2_vs_flare": 51.714361 } }, { "id": "exocomet", "name": "Exocomet-shaped dip", "flag": false, "level": null, "text": "No comet-shaped dips.", "details": {} }, { "id": "habitable", "name": "Habitable zone & size", "flag": false, "level": null, "text": "Not a planet: too big (167 Earth radii).", "details": {} }, { "id": "ttv", "name": "Transit timing (TTV)", "flag": true, "level": "candidate", "text": "The transits arrive early or late by 34.8 min (typical error 5.0 min) repeating every ~2.0 orbits: something is tugging on the planet - another planet, or a moon.", "details": { "n_transits": 100, "rms_min": 34.817676, "err_min": 4.972714, "p": 0.0, "periodicity": { "period_epochs": 2.0, "fap": 0.004975, "freq": 0.5 }, "o_minus_c_min": [ 41.592801, 41.579777, -20.634735, 37.678753, -33.607759, 38.948705, 37.639681, -38.830831, 35.034657, -31.080878, 63.52061, -41.474926, 41.42349, -31.159022, 33.074436, -39.508076, 34.357412, -42.1131, 31.752388, -39.534124, 30.443364, -43.435148, -29.192172, 31.713316, -43.461196, 29.108292, -31.81022, 30.391268, -31.823244, 46.392945, -28.781567, 21.755921, 104.686897, -23.623615, -27.537663, 28.183825, -9.406687, 43.722801, -32.747711, 33.341777, -31.464735, 32.032753, 38.499729, -17.234782, 33.302706, -32.799806, 22.921682, -36.70083, 30.684658, -30.233854, -39.318878, 0.85061, -41.923902, -51.002414, -31.568926, 43.592562, -6.95795, -39.976471, 32.593017, -36.101495, 33.875993, 4.061481, 36.454969, -38.719543, 23.442873, -34.883639, 22.133849, -27.120663, -12.916758, 37.62073, -11.633782, 16.871706, -38.862806, 29.818682, 14.253658, -45.368854, 33.146652, -29.06786, 34.429628, -16.120884, 30.528604, -30.389908, -34.290932, 36.982556, -23.935956, 34.377532, -39.50098, 33.068508, -31.738004, 30.463484, -23.988052, 29.141436, -33.073076, 27.832412, -29.1981, 33.003388, -35.717172, 31.668316, -33.138196, 40.727292 ], "epochs": [ 0.0, 2.0, 3.0, 4.0, 5.0, 8.0, 10.0, 11.0, 12.0, 15.0, 16.0, 19.0, 26.0, 27.0, 114.0, 115.0, 116.0, 117.0, 118.0, 119.0, 120.0, 121.0, 123.0, 124.0, 125.0, 126.0, 127.0, 128.0, 129.0, 656.0, 657.0, 658.0, 660.0, 661.0, 665.0, 666.0, 667.0, 668.0, 669.0, 670.0, 671.0, 672.0, 674.0, 675.0, 676.0, 677.0, 678.0, 679.0, 680.0, 681.0, 683.0, 684.0, 685.0, 686.0, 687.0, 688.0, 689.0, 983.0, 984.0, 985.0, 986.0, 987.0, 988.0, 989.0, 996.0, 997.0, 998.0, 999.0, 1007.0, 1008.0, 1009.0, 1010.0, 1011.0, 1012.0, 1014.0, 1015.0, 1098.0, 1099.0, 1100.0, 1101.0, 1102.0, 1103.0, 1105.0, 1106.0, 1107.0, 1108.0, 1109.0, 1110.0, 1111.0, 1112.0, 1115.0, 1116.0, 1117.0, 1118.0, 1119.0, 1120.0, 1125.0, 1126.0, 1127.0, 1128.0 ] } }, { "id": "tdv", "name": "Transit duration (TDV)", "flag": true, "level": "hint", "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.", "details": { "p": 0.0, "rms_h": 0.751549 } }, { "id": "exomoon_timing", "name": "Exomoon timing pattern", "flag": false, "level": null, "text": "Timing and duration both vary, but not in the moon pattern (more likely another planet).", "details": { "phase_diff_deg": 0.0 } }, { "id": "depth_change", "name": "Changing transit depth", "flag": false, "level": null, "text": "Transit depth steady.", "details": { "p": 0.034151, "rel_rms": 0.308175 } }, { "id": "asymmetry", "name": "Lopsided transit", "flag": false, "level": null, "text": "The transit is symmetric.", "details": { "p": 0.000101 } }, { "id": "check_heartbeat_selflensing", "name": "heartbeat selflensing", "flag": false, "level": null, "text": "Could not run: OutOfMemoryError: Out of memory allocating 239,986,688 bytes (allocated so far: 2,600,078,336 bytes, limit set to: 2,684,354,560 bytes).", "details": {} }, { "id": "giant_host", "name": "Transits of a giant star", "flag": true, "level": "notable", "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.", "details": { "abs_g": -0.8765, "bp_rp": 1.1337 } }, { "id": "check_more_signals", "name": "more signals", "flag": false, "level": null, "text": "Could not run: OutOfMemoryError: Out of memory allocating 136,210,944 bytes (allocated so far: 2,600,078,336 bytes, limit set to: 2,684,354,560 bytes).", "details": {} } ], "plot": "10_rare_check.png" }