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My personal hunt for exoplanets on Planet Hunters TESS




There are many possible transits in the pipeline to check, if they are false positives or not...
All marked transits are available on MAST: findings by users

Tests that must be passed successfully:
  • significant enouth in binned data
  • no wheel motion dump
  • estimated planet parameters possible (radius, orbit period)
  • centroid method
  • background flux test
  • in-out-transit flux test
  • nearby star test
  • aperture size test
  • pixel plot
  • phase folded, if there are multi-transits
  • at least 3 transits observed
  • and at the end confirmed by radial velocity method



  • Abbreviations:
  • BTJD = Barycentric-corrected TESS Julian Date
  • EB = eclipsing binary
  • KOI = Kepler Object of Interest
  • LC = light curve
  • NEB = nearby eclipsing binary
  • PHT = Planet Hunters TESS
  • SSO = solar system object, e.g. asteroid
  • TNO = Trans Neptun Object
  • TCE = A Threshold-Crossing Event (TCE) is a sequence of transit-like features in the flux time series of a given target that resembles the signature of a transiting planet to a sufficient degree that the target is passed on for further analysis.
  • TIC = TESS input catalog
  • TOI = TESS Object of Interest
  • TESS = Transiting Exoplanet Survey Satellite






  • examples from Nora's Jupyter Notebook



    testok/false-positivepicture
    background-fluxok
    background-fluxok
    background-fluxfalse positive
    background-fluxfalse positive
    background-fluxfalse positive
    in-out-transit-fluxok
    in-out-transit-fluxfalse-positive (EB)
    in-out-transit-fluxfalse-positive (SSO)
    pixel-plotfalse-positive (nearby EB)
    pixel-plotfalse-positive (SSO)
    centroid positionok
    centroid positionfalse-positive (background event)
    centroid positionfalse-positive (systematic effect)
    centroid positionfalse-positive (EB)



    my planet candidates



    Subject-Id on PHTTIC-IDtests that passedadditional information / report
    70246528 and planet talk436873727background flux ok, in-out-transit ok for second and third transit, shifted pixel for first transitTOI 4641.01, TIC 436873727.01, 22d period, 0.89 Rjup, report



    possible planet candidates



    Subject-Id on PHTTIC-IDtests that passedadditional information / report
    69528247311055966all tests ok, but in-out transit flux show shifted pixeltransit period 15.7d, 2.535 Rjup, maybe a brown dwarf, report here
    686243818267970high background contamination, phase folded LC did not match, but clear transits every 2 dayssector 40 is contaminated, waiting for sector 53, report1 and report2
    69183739230023734failed on in-out transit flux test, possible contamination by nearby starTIC 230023734.01 planet candidate 10d period, seen at least in sector 26, 40, 41, transits in sector 40 most clearly recognizable, report
    695317209760687background flux, in-out-transit, pixel plot okfirst dip is possible EB, second dip possible planet candidate in sector 42, 8.16hrs transit time/19.581 days period, 0.001 transit depth, 0.554 Rjup, nothing in sector 2 and 29, report
    69531745269848053background flux oktransit T2453.14 sector 42 after SSO? 0.0007 flux depth, 13.680hrs duration/1371.433 days period, 0.161 Rjup, report
    6953443739945266background flux oktransit day 22.9 near data gap ?
    695395064497658background flux oktransit day 22.3 near data gap ?
    70254996257395093background flux ok but concerns on in-out-transitplanet candidate EPIC 220204960.01 13.3 day period but additional transits, report, possible binary, trinary or a blend of two EB transits with period 7.2864, because multi-planetary-system is more unlikely/impossible with planet periods of 13.271 and 14.419 days
    70253286319758429background flux oktransit day 18.4 ?, EB, waiting on next sector, report
    70242984408809951background flux ok, in-out-transit show moved pixel at T2497.13transit day 23.3 in sector 43 (T2497.13, maybe T2471.22 sector 42), 0.0012 flux depth, 4.8 hrs duration/26.082 days period, 0.294 Rjup, waiting on next sector, report
    70244902720667477background flux okfaint star, maybe contamination by nearby star, report and TCE report
    70257058212949987background flux oksingle transit day 7.1 in sector 43 (T2481.28), nothing in 42, 0.0013 flux depth, 6.96hrs duration, 2.1 Rjup, possible EB or brown dwarf, report
    70249572172219408background flux ok, but transits v-shapedtransit day 7.3, transit day 5.9 sector 43? not seen in sector 20
    70245036630439485background flux oktransit day 0.6 in sector 43 (T2474.76)? nothing seen in sector 42, report
    70245210630335896tests except in-out-transit flux ok, but single dip and unknown stellar radius,transit day 18.3 in sector 43? T2492.25, 0.4 flux depth, 1.92hrs duration, maybe contamination, report
    70245249395323403background flux oktransit day 7.3 sector 43? possible hot subdwarf (blue dwarfs), very faint, dip maybe contamination
    70245261397350897tests ok but maybe NEB, centroid offset show a nearby startransit day 1.6 sector 43?, report, waiting on next observation
    70246064306216985background and in-out-transit flux okreport, transit day 18.5 sector 43? 0.0004 transit depth, ~12h transit time = 116d period, 0.277 Rjup, nothing in sector 17 and 42
    7025936458175278background flux ok, pixel-plot ok, phase-folded match, in-out-transit two pixelreport, transit duration did not match period, planet must be big ~1.75 Rjup, possible closely EB of 2 red dwarfs or red dwarf and brown dwarf,
    sector 19 data not accessable to validate sector 43 data with it,
    additional transit time 2482.6 with 2.16h duration and 0.045 flux depth (1.2 Rjup/13.1 Rearth), waiting for sector 44
    70254022293768007tests oktransit day 7.6 sector 43, T2481.77? 8.88h transit duration, 0.007 flux transit depth, 20.65d period, 1.58 Rjup, report
    70256039119180868background & in-out-transit flux oktransit day 14.0 sector 43? 4.08h transit duration, 0.0012 flux depth, 15.925 day period, 0.294 Rjup, waiting on sector 44 and 45, report
    7026134427136666nearby star test, it's maybe an SSO contaminationtransit day 18.4 sector 43?, T2492.54, 4.32hrs duration, 0.002 flux depth, 28.117 days period, 0.324 Rjup, waiting on sector 44, report
    70254699262809788background flux ok but weehl motion dump at the end and strange shapetransit is possible a stellar transit or momentum dump artefact; transit day 18.5 in sector 43 (T2492.68)? 0.0006 flux depth, 14.4hrs duration, 268.094 days period, 0.303 Rjup, report; also dip in sector 30 (T2122.36) but both did not match, 0.0002 flux depth, 5.04 hrs duration, 11.526 days period, 0.175 Rjup, is part of stellar variability



    already known planets/brown dwarfs (candidates)



    Subject-Id on PHTTIC-IDadditional information
    69536664176220787WASP-136 b, no additional transits found, report
    60857577180991313brown dwarf WASP-128 b, report
    608549713228076750.85 Rjup, TOI 2398.01, but already claimed by Marco Montalto
    65545601394561119TOI 1107.01 but claimed already by Michael Lund
    68610842158324245TOI 1161.01 known planet KOI-13 b
    68611808271354351KOI-217 b, 3.9d period
    68616881219879302TOI 1884.01 planet candidate, but already claimed by Ethan Kruse
    68619085198186769TOI 1291.01 but claimed already by Michael Lund
    68623354116242971116242971116242971KELT-12 b
    6862382848451130Kepler-486 b
    69180698424865156HAT-P-7 b / Kepler-2 b
    69187778272707711TOI 4484.01 planet candidate already claimed by Michael Lund
    69189962237116860TIC 237116860.01, 0.9 day period planet candidate but claimed by Ehtan Kruse and was found in previous sector
    69190399272270998planet candidate TIC 272270998.01 claimed by Robert Wilson
    69190791233953967planet candidate TOI 1350.01 already claimed by Michael Lund
    69192824235905185planet candidate TOI 1829.01 already claimed by Michael Lund
    69198220229740848planet candidate TIC 229740848.01 already claimed by Ethan Kruse
    69198954153937417exoplanet candidate TOI 4447.01 already claimed by Greg Olmschenk
    7025858186396382known planet WASP-12 b
    70248784411839167known planet EPIC 246851721 b with ~6 day period
    7025805468573534planet candidate TOI 4597.01 already claimed by Michael Lund
    70248247427740976planet candidate TOI 4608.01 already claied by Michael Lund
    70254110284326455Known exoplanet HAT-P-54 b, report
    70248053248387177TOI 2425.01 claimed by Jana Steuer
    70253297312122956planet candidate TOI 1661.01 already claimed by Michael Lund, 2 day period
    70257127150986109day 18 tests ok but is already claimed, transit day 20.2 is SSO. but transit d18 sector 43 is a possible planet, planet candidate TIC 150986109.01 claimed by Guoyou Sun, 7.44h transit duration, 0.0033 flux depth, report



    false positive list



    TCE report shows 2 stars
    Subject-Id on PHTTIC-IDtest that did not passadditional information
    6084770953361605background flux 5 transits, ~5d period, possible eclipsing binary




    695183112052960459in-out transit fluxsingle transit, the star is a white dwarf, systematic-effect
    60934370167208380V-shaped transiteclipsing binary
    60852594264931386centroid methodsystematic effect
    60846406191401931wheel momentum dumpsT2274.2/day 19.22 is false positive, possible asteroid on T2266.5, report here
    60858795279957416so significant dip / star noise-
    60854604272429505wheel momentum dumps-
    60865997361482342no significant dip / star noise-
    60859826259701242no significant dip / star noise-
    60860992167723383in-out-transit fluxmaybe an eclipsing-binary, report here
    60845934220408233in-out-transit flux, aperture testsomething is wrong

    60934414185240401no significant dip shown in binned data-
    60846101355629274centroid test
    6085153031816875not significant in binned data-
    6085612580784605dip too big for a planet-
    60864885183647999dip too big for a planet-
    60935396279155809wheel momentum dumps-
    60852088151789318near wheel momentum dumps-
    6093307438634217not significant in binned data-
    6084621133714944not significant in binned data-
    60848711455279652not significant in binned data-
    60859465990903dip too big for a planet-
    60864152185221814wheel momentum dumps-
    60865542350764186wheel momentum dumps-
    60933251287400952no significant transit in binned data-
    60933999306928502in-out-transit fluxreport here
    60934465306830299not significant in binned data-
    6093481647427965background flux or systematic effect-
    6278620973090804not significant in binned data-
    60933551143057736background flux, wheel motion dumps
    64591031143127398systematic error
    64591130323573569not significant in binned data
    64597456278291931wheel motion dump
    64598559149449530star variability
    6460038689067009not significant in binned data and wheel motion dump
    646052167018wheel motion dumps
    64607254282983652not significant in binned data and wheel motion dump
    64607765450864049background flux
    64608299131160660not significant in binned data and in-out-transit flux
    64613150256706242not significant in binned data, star variability
    64615293383704693background flux, nearby star test, it's an SSO/asteroid
    6461668723134560not significant in binned data
    64619832370585197not significant in binned data
    65538045306894507background flux test, eclipsing binary
    6553831917524877star variability, too big for a planet
    65538547323837008background flux, star variability
    65539265256218188systematic effect
    65541527118726975too big for a planetgigant star
    65542725263585051not significant in binned data / part of the stellar variability
    65546402294668207not significant in binned data / part of the stellar variability
    6554779041338480background flux at day 7stellar variability, hard to find transits
    65552120189379939looks not significant in binned data
    68620943122224804eclipsing binary
    69535863248055451background fluxSSO
    69531419272102428eclipsing binary
    69528470303368830backgroud flux, nearby starsSSO see report
    69183944284990199centroid offset in centred on another starcontamination
    686030031715969532no significant dips in binned dataSSO at 9 day, perharps too at 22 day
    69184920224290280failed background flux / in-out-transit testsplanet candidate 0.93 days period but it's an eclipsing binary, own report here, TCE report
    69527971328068200known eclipsing binary
    69528115313861906background flux test
    68620048159143534eclipsing binary
    68620341155639758background flux test failed, phase folded LC looks badplanet with unclear period because some dips maybe stellar variability, maybe 0.75 Rjup, report here
    6554664616660286background flux roller coasterhigh stellar varibility
    65552352296418844background fluxcontamination by a nearby star
    65556611405711292background flux test
    65556660425795784background flux
    65557446278199349too big for a planetTOI 922.01: eclipsing binary
    65558617462078476too big for a planetSSO
    68601749420110967background fluxhigh stellar variability
    68602263342019292background fluxhigh stellar variability
    68602486298896144wheel motion dump
    68604307705298865background fluxcontamination by a nearby star
    68604336462741192wheel motion dump on first "transit", second "transit" not significant in binned data
    68604732459212036background fluxconfirmed rr-lyrae
    68605251441718542not significant in binned data
    68606163402898317not significant in binned data
    68606786396737942background fluxhigh stellar variability
    68606970383623314background fluxhigh stellar variability
    68607567372734827too big for a planethigh stellar variability
    68607603371706494eclipsing binary
    68607639370148102too big for a planetbig star, 24 Rsun
    68607899362432095too big for a planetbig star, 23 Rsun
    68608069356370295background flux
    68608901356339419not significant in binned data
    68608938353895246background flux
    68608968348503219wheel motion dump
    68609020342025025eclipsing binary
    68609611330496058too big for a planet
    68610452315758126background flux
    68611712147564266background fluxmaybe SSO or red dwarf double star
    68611732271879612background flux
    68612440268319776background flux, not significant in binned data
    68613073258777137eclipsing binaryTOI 1183.01: false positive (EB)
    68617131219860013background flux
    68618424159513723background flux
    68618847198157534background flux
    68618916156197735wheel motion dump
    68618960193681019background flux
    68619730160492444background flux, wheel motion dump
    68620035158555987background flux
    68621094121277143known false positive KOI 3853.01possible eclipsing binary
    68621474154719289background flux
    68621524123201405background flux
    68621582112857453Centroid offset (TicOffset-rm: 25.442 arcseconds) centered on another starcontaminated by nearby EB
    6862192984977760not significant in binned data and background flux
    6862299570945920wheel motion dump
    68623427116019143background flux
    6862434442069294wheel motion dump
    691758911717079066known double star, Kepler-13 B, contaminated by Kepler-13 A
    69176574351802908background fluxhigh stellar variability
    691768041716562915background fluxhigh stellar variability
    691779631884546500pixel plot (nearby EB)contamination by a nearby star, possible EB, report

    69178639265886274background flux
    69179843237184192background fluxhigh stellar variability
    69180761235718636EB
    69184312341706942in-out-transit flux and planet size/mass/orbit did not make senseV-shaped spikes from a possible EB, show shifted pixel in in-out-transit flux test
    69184355389969561stellar variability
    69184398376926030transit duration too short for a planet
    69184941224290280aperture test, in-out-transit flux, pixel-plotpossible EB, TCE report show 0.93d period transits
    69185678219750901too big for a planethigh stellar variability
    69186595287180169planet parameters make no sensebig star, part of stellar variability
    69187013320525204EBplanet candidate TOI 1140.01 claimed by Michael Lund but rejected
    69187373198365901too big for a planetbig star, high stellar variability
    69176623336267424planet candidate with 1.48d period claimed by Michael Lund but rejected as possible EB
    69188360289539327known candidate TOI 1186.01 claimed by Michael Lund but rejected as false positiveif this is a planet then it has 2 Rjup / 20 Rearth!
    69189585258826816in-out-transit flux, pixel plotalso TCE report show a EB
    69190870233738474aperature test, pixel plotstar is not in center, LC contaminated or it's an EB
    69191494259237123in-out-transit fluxcontamination by something in the background
    69191943232681225not significant in binned datahigh stellar variability
    69193505229476285known EB from previous sector
    69193896224293813too big for a planetEB
    69199965188743010spike in background fluxhigh stellar variability
    69517528422115127not significant in binned data
    69517792405483203in-out-transit-fluxpossible planet with 5.8d period is maybe an EB, transits V-shaped
    69518190365334603spike in background flux test
    69520224435339558background flux testpossible SSO
    69520486301173669in-out-transit-fluxpossible SSO
    69521665293158174not significant in binned data
    69522228416673535in-out-transit-fluxpossible EB or contamination by nearby star
    69522556415701467spike in background flux
    69522558415369912part of stellar variability
    69523035258806323not significant in binned data
    69524290398940200too big for a planet
    69524584398585646background fluxpossible SSO
    69525069381454714too big for a planet
    69525483381128414not significant in binned data
    69526492365332328pixel plot, in-out-transit fluxmaybe SSO or EB
    69526702125755011contamination by nearby EB
    69527624336674321background flux
    69528335310760154part of stellar variability
    69528534302189927background flux test
    6952887549529466background flux test
    69530446269530673in-out-transit flux, pixel mapcontamination by a nearby star
    69531018272005345too big for a planet
    69534678241157686aperture testpart of stellar variability
    6953816852054736too big for a planetbig star with high stellar variability
    6953852947094931centroid testalways near centroid changes/problems
    6953933022901115too big for a planet
    695396858963251too big for a planet
    695397413836749not significant in binned data
    70248710369476781background flux test
    70255000257816591aperture teststar is not in center, possible contamination by nearby star
    70257775119251275background flux and not significant in binned data
    70256984125843782EB with 1.8 day period
    7025903283384234aperture test, in-out-transit-fluxpossible EB 4.3 day period or contamination, report and TCE report
    70248713244170915background flux
    70243848620126376background flux
    70244891722458222SSO with animation
    70245024630436384background flux
    70245872467725961background flux
    70248218429035886background flux
    70248476415339402looks unclear in binning data
    70248755243146785background flux
    70249469349581861in-out-transit-fluxpossible EB
    70249729404712691background flux
    70250033395320272background flux, wheel momentum dump
    70250960333640989background flux
    70252607346940579background flux
    70254004293360200background flux
    70254084293478800in-out-transit fluxtransit day 22.5 in sector 43 is maybe EB
    70254139 293375289background flux
    7025420545292543too big for a planet
    7025430726081949background flux
    70255451212956638background flux
    70255632247396516in-out-transit-fluxtransit day 18.5 in sector 43 is a possible EB, very large transit time
    70256192244177032background flux
    70256476213013944background flux
    70256982126984335background fluxSSO
    7025818261146016background flux
    7025856588752374background flux
    7025886886898134background flux
    7026034761713843background flux
    7026071321024436wheel motion dump
    7026080058720024background flux
    7026100447120498background fluxpossible SSO
    702621803894266background flux
    70242378440682035background fluxsector 43 is contaminated, no dips in sector 42
    70242820630484365no significant dips in binned data
    70243456397350406in-out-transit-fluxEB
    70243481434234955known as TOI 944.01, EB
    70243626384881668planet parameters not possible
    70243780 426988533background flux
    70243867377038836background fluxpossible TNO
    70243898376934602centroid test
    70243903611125990not significant in binned data
    70244332408195428in-out-transit-fluxtransit day 21.9 sector 43?, is part of the EB, report
    70245150674139320centroid, star is not in focus
    70245772620142435background fluxSSO
    70246465438212183centroid offsetcontamination by nearby EB, period <8 days
    70246675400465017background flux, stellar variability
    70251330377036880centroid shift
    70256968127020121background flux
    70244537436705322not significant in binned data
    70244564721664817background flux
    70245175630587658background flux
    70245716611348600background flux
    70245781468891346background fluxSSO or EB
    70246012408776994centroid test
    70246416440681442not significant in binned data
    70246845437895487not significant in binned data
    70247180268287778background flux
    70247269262846034possible 16d period transit from sector 43 not seen in sectors 30 and 42, so it's a false positive
    70247324257958268background flux
    70247422365207321background flux
    70247684432610714background flux
    70247708429503326background flux
    70248021346988834background flux
    70249012405374965planet parameters make no sensemaybe EB
    70249245365232027background flux, stellar variability
    70249451353440749background flux
    70249873401429438background flux
    70249999399693366background flux
    70250003399732683background flux
    70250259126996675background fluxSSO
    70250920337046016background/in-out-transit fluxSSO
    70250980333566723background flux
    70251374376904847aperture testSSO
    70251511376988281background flux
    70252222270417193wheel motion dump
    70252697346866122background fluxhigh stellar variability
    7025287976036719background flux
    7025303761138899in-out-transit-fluxEB or SSO
    7025306060860808not significant in binned datahigh stellar variability
    70253903302674460too big for a planet
    70253994293372567background flux
    7025419445802921V-shaped, high stellar variabilitymaybe >8d EB
    7025419845976870background flux
    70254551258806323high stellar variability, planet period did not match
    70254558258796682background flux
    70254685257322498background flux
    70254927257304462background flux
    70255111248952314in-out-transit fluxpossible EB, report
    70255307243013094not significant in binned data
    70255592247401811short planet period did not match
    7025763691275414not significant in binned data, additional 2 SSO
    7025806167829516background flux
    70258363113805968background fluxSSO
    70258417101255946background fluxcontamination
    7025842797657859background flux
    7025913874387314in-out-transit-fluxpossible SSO
    7025922468926017background flux, not significant in binned datatransit day 18.8, transit day 16.5 ?
    7025967868676559wheel momentum dump
    7026190914283144not significant in binned datahigh stellar variability
    702621536372784centroid testpossible EB
    7025911282928545background flux, in-out-transit-flux ok, but no dip in raw data - it's an artifact/processing errortransit day 18.7 sector 43?, V-shaped but clear dip, waiting until sector 44, report
    60852984430663414background flux, in-out-transit fluxtransit duration did not match transit period, it's an EB, report here
    60932478142146051tests ok but planet duration time did not match transit periodpossible a part of stellar variability, report here
    65540897402675246failed on in-out-transit-flux, contaminated sectorv-shaped transits, more likley an NEB (shown in centroid offset), seen in sector 38 and 39, period 1.085d from TCE report (1.92 hrs transit duration = 0.949d period my measurement), 0.006 flux depth, 0.8 Rjup, report here
    70250425387870371planet parameters not possibletransit day 10.2 sector 43? very big star
    69190700236889115planet parameters impossiblesingle transit, possible big jupiter or brown dwarf, maybe day 6 is caused by momentum dump and the other are stellar variability, report1 and report2
    68620572137218389failed in-out-transit flux, pixel plotpossible planet seen in sector 40, not in sector 14, T2399.96, 0.0005 flux depth, 8.4hrs duration = 29.9d period, 0.345 Rjup, rotation variable star with 1.535 day period, report here, it's more possible an EB



    transits missed



    Subject-Id on PHTTIC-IDadditional information
    60860143300037819planet candidate from sector 8, not seen in sector 36
    -34068865confirmed exoplanet GJ 367 b, 0.32d period, 0.7 Rearth, extrem small dips



    pipeline



    Subject-Id on PHTTIC-IDadditional information




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    • • •
    Gerd Gühne
    Kohlweg 10
    04347 Leipzig
    Germany