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KEPLER_KOI

Search results output columns:

Kepler ID
Kepler ID identifying corresponding entry in the Kepler Input Catalog (or possibly the custom aperture file number).
757450 to 12935144

KOI Name
Kepler Object of Interest designation as a string. Examples: k1000.01, ... (Note some tables used a KOInnn.n format for the KOI name.)
example: K00757.02

Kepler Name
Kepler name for a confirmed planet.
example: kepler-390 c, kepler-186 f

KOI Number
Kepler Object of Interest number. Numerical value of KOI name. Note ignore trailing 0's.
1.0100 to 8297.0100

Kepler Disposition
Vetting Status derived by the Kepler project. Only 2 categories are currently defined but this may change as more data is received and analyzed.
Examples: CANDIDATE, FALSE POSITIVE

NExScI Disposition
Vetting Status derived by NExScI. Currently NExScI flags confirmed planets which are not flagged by the Kepler project. Therefore, 3 categories are currently defined.
Examples: CANDIDATE, FALSE POSITIVE, CONFIRMED

RA (J2000)
Right Ascension in decimal degrees of host star as given in the Kepler Input Catalog (KIC).
279.8527 to 301.7208

RA Error
Uncertainty in Right Ascension in degrees of host star as given in the Kepler Input Catalog (KIC).
currently all 0

Dec (J2000)
Declination in decimal degrees of host star as given in KIC.
36.5774 to 52.3360

Dec Error
Declination uncertainty in decimal degrees of host star.
currently all 0

Time of Transit Epoch
Time to first transit (BKJD = BJD-2454833.0). The offset corresponds to 12:00 on Jan 1, 2009 UTC. Note other tables have used an offset value of 2454900, so be careful when comparing entries with earlier data.
120.5159 to 1472.5223

Time err1
uncertainty in Time upper limit
0.0000 to 0.5690

Time err2
uncertainty in Time lower limit
-0.5690 to -0.0000

Period
Average interval between transits based on a linear fit to all observed transits. For candidates with only one observed transit, the period is estimated from the duration and knowledge of the stellar radius; values are then rounded to the nearest integer and multiplied by -1.
0.2418 to 129995.7784

Period err1
Period uncertainty upper limit (ppm)
0 to 0.1725

Period err2
Period uncertainty lower limit (ppm)
-0.1725 to 0

Transit Depth
The fraction of stellar flux lost (in parts per million) at the minimum of the planetary transit. Transit depths are typically computed from a best-fit model produced by a Mandel-Agol (2002) model fit to a multi-quarter Kepler light curve, assuming a linear orbital ephemeris.
0 to 1541400

Depth err1
Transit depth uncertainty upper limit (ppm)
0 to 388600

Depth err2
Transit depth uncertainty lower limit (ppm)
-388600 to 0

Duration
Transit duration, first contact to last contact. Contact times are typically computed from a best-fit model produced by a Mandel-Agol (2002) model fit to a multi-quarter Kepler light curve, assuming a linear orbital ephemeris.
0.0520 to 138.5400

Duration err1
Transit duration uncertainty upper limit
0 to 20.2000

Duration err2
Transit duration uncertainty lower limit
-20.2000 to 0

Ingress Duration
The time between first and second contact of the planetary transit. Contact times are typically computed from a best-fit model produced by a Mandel-Agol (2002) model fit to a multi-quarter Kepler light curve, assuming a linear orbital ephemeris.
currently all null

Ingress err1
Ingress duration uncertainty upper limit
currently all null

Ingress err2
Ingress duration uncertainty lower limit
currently all null

Impact Parameter
The sky-projected distance between the center of the stellar disc and the center of the planet disc at conjunction, normalized by the stellar radius.
0 to 100.8060

Impact Parameter err1
Impact uncertainty upper limit
0 to 85.5400

Impact Parameter err2
Impact uncertainty lower limit
-59.3200 to 0

Inclination
The angle between the plane of the sky (perpendicular to the line of sight) and the orbital plane of the planet candidate.
0 to 90

Inclination err1
Orbital Inclination uncertainty upper limit
currently all null

Inclination err2
Orbital Inclination uncertainty lower limit
currently all null

Semi-major Axis
Semi-major axis for planet based on Kepler 3rd law.
0.0059 to 44.9892

Semi-major Axus err1
Semi-major axis uncertainty upper limit
currently all null

Semi-major Axis err2
Semi-major axis uncertainty lower limit
currently all null

Eccentricity
Eccentricity.
currently all 0

Eccentricity err1
Uncertainty upper limit
currently all null

Eccentricity err2
Uncertainty lower limit
currently all null

Long of Periastron
Longitude of Periastron
currently all null

Long err1
Uncertainty upper limit in Longitude of periastron
currently all null

Long err2
Uncertainty lower limit in Longitude of periastron
currently all null

r/R
Ratio of planet radius to stellar radius
0.0013 to 99.8707

r/R err1
Uncertainty upper limit in r/R*
0 to 85.5323

r/R err2
Uncertainty lower limit in r/R*
-59.3257 to 0

a/R
The distance between the planet and the star at mid-transit divided by the stellar radius. For the case of zero orbital eccentricity, the distance at mid-transit is the semi-major axis of the planetary orbit.
0.3730 to 79614

a/R err1
Uncertainty upper limit in d/R*
0 to 27952

a/R err2
Uncertainty lower limit in d/R*
-27952 to 0

Planet Radius
Planetary radius; in Earth radii=6378 km
0.0800 to 200346

Planet Radius err1
Planetary radius upper limit uncertainty; in Earth radii=6378 km
0 to 21640

Planet Radius err2
Planetary radius upper limit uncertainty; in Earth radii=6378 km
-77180 to 0

Teq
Equilibrium surface temperature of planet. The calculation of equilibrium temperature assumes i) thermodynamic equilibrium between the incident stellar flux and the radiated heat from the planet, ii) a Bond albedo (the fraction of total power incident upon the planet scattered back into space) of 0.3, iii) that the planet and star are blackbodies, and iv) that the heat is evenly distributed between the day and night sides of the planet.
25 to 14667

Teq err1
Upper Limit uncertainty in Equilibrium surface temperature of planet
currently all null

Teq err2
Lower Limit uncertainty in Equilibrium surface temperature of planet
currently all null

Teff
Stellar effective (photospheric) temperature in degrees K
2661 to 15896

Teff err1
Upper limit uncertainty in stellar effective temperature in degrees K
0 to 676

Teff err2
Lower limit uncertainty in stellar effective temperature in degrees K
-1762 to 0

log(g)
Log of stellar surface gravity in cm/s2
0.0470 to 5.3640

log(g) err1
Upper limit uncertainty in Log of stellar surface gravity in cm/s2
0 to 1.5000

log(g) err2
Lower limit uncertainty in Log of stellar surface gravity in cm/s2
-1.5000 to 0

Metallicity
stellar metallicity (dex). The base-10 logarithm of the Fe to H ratio at the surface of the star, normalized by the solar Fe to H ratio.
-2.5000 to 0.5600

Metallicity err1
Upper limit stellar metallicity uncertainty (dex)
0.0400 to 0.4700

Metallicity err2
Lower limit stellar metallicity uncertainty (dex)
-0.6700 to -0.0700

Stellar Radius
stellar photospheric radius (solar = 1)
0.1090 to 229.9080

Stellar Radius err1
Upper limit stellar radius uncertinty (solar = 1)
0 to 33.0910

Stellar Radius err2
Lower limit stellar radius uncertinty (solar = 1)
-116.1370 to 0

Stellar Mass
stellar Mass (solar = 1)
0 to 3.7350

Stellar Mass err2
Lower limit stellar Mass uncertainty (solar = 1)
-2.2700 to 0

Stellar Mass err1
Upper limit stellar Mass uncertainty (solar = 1)
0 to 1.5000

Age
stellar Age
currently all null

Age err1
Upper limit stellar Age uncertainty
currently all null

Age err2
Lower limit stellar Age uncertainty
currently all null

Provenance
Provenance of stellar parameters. A flag describing the source of the stellar parameters.

KIC = the parameters are extracted from the Kepler Input Catalog (Brown et al. 2011). Uncertainties of Teff = 200 K, log(g) = 0.3 dex and [Fe/H] = 0.4.

J-K = the star is unclassified in the KIC, J-K has been used to estimate temperature. The host star is assumed to be on the ZAMS with corresponding log(g) based on the Schmidt-Kaler relation.

Solar = the star is unclassified in the KIC, so the host star is assumed to have solar properties.

SME = Spectroscopic parameters derived from SME analysis (Valenti and Piskunov 1996). Stellar parameters are derived based on stellar evolution models.

SPC = Spectroscopic parameters derived from SPC analysis (Buchhave et al. 2012). Stellar parameters are derived based on stellar evolution models.

Pinsonneault = uses a revised Teff scale from Pinsonneault et al. (2012) with [Fe/H] fixed at -0.2. The quantity log(g) is taken from the KIC. Values are then revised by fitting to Yonsei-Yale stellar evolution models (Yi et al. 2001).

Astero = host star properties have been measured by comparison with astroseismologial models.
examples: SPC, Solar, SME, null, Pinsonneault, KIC, J-K

Quarters
bit-map of quarters searched. A bit string indicating which quarters of Kepler data were searched for transit signatures. Reading from left to right, the bits indicate the quarters. A value of one for any bit means that the designated quarter was searched for transits, a value of zero means that quarter was not included in the transit search.
1111111011101110

Limb Darkening Model
A reference to the limb darkening model used to calculate stellar limb darkening coefficients.
Claret (2011, AA, 529, 75)

Limb Darkening Coeff1
Limb Darkening Coefficient 1. Up to four coefficients define stellar limb darkening (e.g., Claret 2000). Limb darkening is the variation of specific intensity of the star as a function of μ = cos(θ). θ is the angle between the line-of-sight of an observer and a line perpendicular to the stellar surface at an observed point.
0.1254 to 0.9486

Limb Darkening Coeff2
Limb Darkening Coefficient 2
-0.1206 to 0.4822

Limb Darkening Coeff3
Limb Darkening Coefficient 3
currently all 0

Limb Darkening Coeff4
Limb Darkening Coefficient 4
currently all 0

Transit Number
The number of expected transits or partially-observed transits associated with the planet candidate occurring within the searched light curve. This does not include transits that fall completely within data gaps.
0 to 2664

Max single event sigma
Maximum single event statistics. See NExSci data columns definitions page for more information.
2.4174 to 22982.1620

Max Multievent sigma
Maximum multi-event statistics. See NExSci data columns definitions page for more information.
7.1051 to 120049.6800

KOI count
Number of planet candidates identified in system
1 to 7

Binary Discrimination
Binary discrimination odd-even depth significance. See NExSci data columns definitions page for more information.
-1 to 1

Comments
False Positive comment. A description of the reason why an object's disposition has been given as False Positive. The following keywords are short-hand for certain criterion used to determine if a KOI is a False Positive:

APO: "Active Pixel Offset", the pixels showing the transit do not coincide with the target star, indicating that the transit is actually on a background object.

Binary: indicates that the transit event is due to an eclipsing binary, not a planet.

EB: target is an eclipsing binary, or there is an unresolved background binary.

odd-even: the depth of the even numbered transits are statistically different than the depths of the odd numbered transits, this is a sign of a background eclipsing binary.

V-shaped: likely a grazing eclipsing binary.

SB1: target star is a single-lined spectroscopic binary.

SB2: target star is a double-lined spectroscopic binary.
all null

Transit Model
A reference to the transit model used to fit the data (e.g., Mandel-Agol 2002).
Mandel and Agol (2002, ApJ, 580, 171)

Transit Model SNR
Transit depth normalized by the mean uncertainty in the flux during the transits.
0 to 9054.7000

Transit Model DOF
The number of degrees of freedom used when fitting the transit model to the data.
currently all null

Transit Model chisq
The goodness of the transit fit to the data. Within the TCE table this quantity is the chi-squared statistic. Within the KOI table this quantity is the reduced-chi-squared statistic, e.g., divided by the number of degrees of freedom in the fit.
currently all null

FWM motion signif.
Flux weighted centroid motion significance
0 to 1

gmag
KIC g magnitude
7.2250 to 21.1500

gmag err
gmag uncertainty
currently all null

rmag
KIC r magnitude
7.1010 to 19.9600

rmag err
rmag uncertainty
currently all null

imag
KIC i magnitude
7.6270 to 19.9000

imag err
i mag uncertainty
currently all null

zmag
KIC z magnitude
6.7020 to 17.4030

zmag err
zmag uncertainty
currently all null

Jmag
KIC J magnitude
4.0970 to 17.3720

Jmag err
Jmag uncertainty
0.0180 to 0.3050

Hmag
KIC H magnitude
3.0140 to 17.6150

Hmag err
Hmag uncertainty
0.0140 to 0.2660

Kmag
KIC K magnitude
2.3110 to 17.0380

Kmag err
Kmag uncertainty
0.0110 to 9.9980

kepmag
KIC kepler magnitude
6.9660 to 20.0030

kepmag err
kepmag uncertainty
currently all null

Delivery Name
Delivery Name
CUMULATIVE

FWM SRA
The Right Ascension (J2000) of the location of the transiting object calculated from the flux-weighted centroids. This result does not reflect the systematics due to crowding which can introduce significant errors in the calculated position. In decimal hours.
18.6570 to 20.1148

FWM SRA err
Flux weighted source RA error
3e-09 to 0.0003

FWM SDec
The Declination (J2000) of the location of the transiting object calculated from the flux-weighted centroids. This result does not reflect the systematics due to crowding which can introduce significant errors in the calculated position. In degrees.
36.5769 to 52.3382

FWM SDec err
Flux weighted source Dec error.
4e-08 to 0.0032

FWM SRAO
The RA (J2000) flux-weighted centroid shift. This is the RA of the in-transit flux weighted centroid minus the RA of the out-of-transit flux weighted centroid.
-742.4300 to 549.5000

FWM SRAO err
Flux weighted RA centroid shift error.
0.0001 to 11

FWM SDeco
The Dec (J2000) flux-weighted centroid shift. This is the Dec of the in-transit flux weighted centroid minus the Dec of the out-of-transit flux weighted centroid.
-417.9000 to 712.5000

FWM SDeco err
Flux weighted Dec centroid shift error.
0.0001 to 11

FWM PRAO
The calculated Right Ascension offset of the transiting or eclipsing object from the KIC location of the target star. The accuracy of this calculation degrades when the transit source has significant flux that falls outside the photometric aperture + a halo of pixels around it.
-4 to 1.1900

FWM PRAO err
Flux weighted RA offset error
0.0000 to 663

FWM PDeco
The calculated Declination offset of the transiting or eclipsing object from the KIC location of the target star. The accuracy of this calculation degrades when the transit source has significant flux that falls outside the photometric aperture + a halo of pixels around it.
-6 to 5

FWM PDeco err
Flux weighted Dec offset error.
6e-06 to 870

Dicco MRA
The angular offset in the RA (J2000) direction between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by simultaneously fitting all quarters. The out-of-transit centroid is subtracted from the difference image centroid.
-25.1000 to 45.6800

Dicco MRA err
Dicco MRA uncertainty.
0.0670 to 33

Dicco MDec
The angular offset in the Dec (J2000) direction between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by simultaneously fitting all quarters. The out-of-transit centroid is subtracted from the difference image centroid.
-75.9000 to 27.5000

Dicco MDec err
DICCO MDec uncertainty.
0.0670 to 22

Dicco MSky
The angular offset on the plane of the sky between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by simultaneously fitting all quarters. The out-of-transit centroid is subtracted from the difference image centroid.
0 to 88.6000

Dicco MSky err
Diff. Image Control Centroid Mean Sky offset
0.0670 to 32

Dicco FRA
The angular offset in the RA (J2000) direction between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by averaging the weighted single-quarter measurements. The out-of-transit centroids are subtracted from the difference image centroids.
-11.4290 to 12.6000

Dicco FRA err
RA angular offset error.
0.0670 to 6.7000

Dicco FDec
The angular offset in the Dec (J2000) direction between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by averaging the weighted single-quarter measurements. The out-of-transit centroids are subtracted from the difference image centroids.
-11.8000 to 10.1000

Dicco FDec err
Dec angular offset error.
0.0670 to 9.5000

Dicco FSky
The angular offset on the plane of the sky between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by averaging the weighted single-quarter measurements. The out-of-transit centroids are subtracted from the difference image centroids.
0.0390 to 14.8000

Dicco FSky err
dicco sky error
0.0670 to 8.5000

Dikco MRA
The angular offset in the RA (J2000) direction between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by simultaneously fitting all quarters. The out-of-transit centroid is subtracted from the difference image centroid.
-27.8000 to 46.5700

Dikco MRA err
dikco MRA error
0.0670 to 33

Dikco MDec
The angular offset in the Dec (J2000) direction between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by simultaneously fitting all quarters. The out-of-transit centroid is subtracted from the difference image centroid.
-76.6000 to 34

Dikco MDec err
Dikco MDec error
0.0670 to 22

Dikco MSky
The angular offset on the plane of the sky between the best-fit PRF centroids from the Out-Of-Transit image and the Difference Image by simultaneously fitting all quarters. The out-of-transit centroid is subtracted from the difference image centroid.
0 to 89.6000

Dikco MSky err
Dikco MSky error
0.0670 to 32

Dikco FRA
The angular offset in the RA (J2000) direction between the best-fit PRF centroids from the difference image and the Kepler Input Catalog position by averaging the weighted single-quarter measurements. The KIC position is subtracted from the difference image centroids.
-11.3460 to 10.9000

Dikco FRA err
Dikco FRA error
0.0670 to 6.7000

Dikco FDec
he angular offset in the Dec (J2000) direction between the best-fit PRF centroids from the difference image and the Kepler Input Catalog position by averaging the weighted single-quarter measurements. The KIC position is subtracted from the difference image centroids.
-12.3000 to 10.7000

Dikco FDec err
Dikco FDec error
0.0670 to 9.5000

Dikco FSky
The angular offset in the plane of the sky between the best-fit PRF centroids from the difference image and the Kepler Input Catalog position by averaging the weighted single-quarter measurements. The KIC position is subtracted from the difference image centroids.
0.0410 to 14.7000

Dikco FSky err
Dikco FSky error
currently all null

Vet Stat
Delivery Vetting Status (active or done). After a period of activity, the classification of the KOI table will change from ACTIVE to DONE when all dispositions are judged as final and all model parameters have been updated appropriately. This will typically occur after a new delivery of TCEs to the archive based on a longer data baseline.
active,done

Last vet Update
Date of last disposition update by NExSci
2014-12-04 00:00:00 to 2017-03-23 00:00:00

TCE Planet Number
TCE Planet Number
1 to 8

TCE Delivery Name
TCE Delivery name corresponding to the TCE data federated to the KOI.
q1_q12_tce, q1_q16_tce

DVR Datalink
Link to the DR25 Data Validation Report (DVR) File if available. Note the Kepler Data Release 25 Data Validation process produces several files for stars with at least one Threshold-crossing event (TCE). One TCE is defined as three transit-like signals detected with a consistent period. If a TCE was detected for the input target, links will appear to the following files: A single-page summary PDF file for each TCE (DVS), an extensive multi-page PDF report (DVR). The DV time series files in FITS format can be found in the same directories.

Disposition Provenance
Disposition Provenance

Parameter Provenance
Parameter Provenance

First Transit Time (BJD)
Time to first Transit Value (BJD)
2454953.5160 to 2456305.5220

First Transit Time err1
Time to first Transit uncertainty upper limit
0.0000 to 0.5690

First Transit Time err2
Time to first Transit uncertainty lower limit
-0.5690 to -0.0000

DVS Datalink
Link to the DR25 Data Validation Summary (DVS) File (if available).

Transit Flag
Not Transit-Like: A KOI whose light curve is not consistent with that of a transiting planet. This includes, but is not limited to, instrumental artifacts, non-eclipsing variable stars, and spurious (very low SNR) detections. (1=true, 0=false)
0 to 1

Secondary Flag
Significant Secondary: A KOI that is observed to have a significant secondary event, indicating that the transit-like event is most likely caused by an eclipsing binary. However, self-luminous, hot Jupiters with a visible secondary eclipse will also have this flag set to true (1) with a disposition of PC.
0 to 1

Offset Flag
Centroid Offset: The source of the transit-like signal is from a nearby star, as observed by measuring the centroid location of the image both in and out of transit. (1=true, 0=false)
0 to 1

Contamination Flag
Ephemeris Match Indicates Contamination: The KOI shares the same period and epoch as another object and is judged to be the result of flux contamination in the aperture or electronic crosstalk. (1=true, 0=false)
0 to 1

Insolation Flux
Insolation Flux Value (Earth flux)
0 to 10947554.5500

Insolation Flux err1
Insolation Flux uncertainty upper limit (Earth flux)
0 to 3617132.5900

Insolation Flux err2
Insolation Flux uncertainty lower limit (Earth flux)
-5600031.3300 to 0

Fitted Stellar Density
Fitted stellar density value (g/cm**3)
4e-05 to 980.8542

Fitted Stellar Density err1
Fitted stellar density uncertainty upper limit (g/cm**3)
0 to 835.2423

Fitted Stellar Density err2
Fitted stellar density uncertainty lower limit (g/cm**3)
-696.0892 to 0

Planetary Fit
Planetary fit type. Possible values include LS (Least Squares fit), MCMC (Markov Chain Monte Carlo fit), DV (Data Validation pipeline fit), and none (fit is not provided, only orbital period, transit epoch and transit duration are reported)

Disposition Score
The disposition score has a value between 0 and 1. Values close to one indicate high confidence in the disposition of a KOI as a Planetary Candidate. Values close to zero indicate high confidence in the disposition of a KOI as a False Positive.
0 to 1