exoclock

KELT-1b

Discovered by: Siverd et al. 2012

The Star
Simbad
GAIA
2MASS
KELT-1
DR2 2881784280929695360
J00012691+3923017
RA 00:01:26.9169 DEC +39:23:01.782
Parallax
3.697 mas
P.M. RA
-9.771 mas/y
P.M. DEC
-7.679 mas/y
MagV
10.63
MagR*
10.391
MagI*
10.028
MagJ
9.682
MagH
9.534
MagK
9.437
MagG
10.59
MagGBP
10.873
MagGRP
10.175
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2021
Mid-time
2456981.90516 ± 0.00014 BJDTDB
Period
1.21749399 ± 1.6e-07 days

Transit Parameters
Beatty et al. 2019
Rp/Rs
0.0771 ± 0.0003
a/Rs
3.69 +0.04 -0.04
i
86.8 +0.8 -0.8 deg
e
0.0013 +0.0005 -0.0005
ω
358.0 +51.0 -51.0 deg
DepthR*
7.71 mmag
Duration*
2.71 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted to produce a duration that matches the observations.

Limb Darkening Parameters
Siverd et al. 2012
Teff
6518.0 +50.0 -50.0 K
Log(g)
4.23 +0.03 -0.03 cm/s2
Fe/H
0.05 +0.08 -0.08 dex
ExoClock Status
Observing Priority
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes
LOW
20 (7)

20

1.1±0.3

KELT-1b


ExoClock Observations

Observation
Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
2021-12-21 Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / R / 120.0
2.3 ± 0.9
2021-12-21 Mark Salisbury
POST
Orion Optics ODK
SBIG ST-10 XME / R / 90.0
1.8 ± 1.2
2021-10-28 Paolo Arcangelo Matassa
P.M.P.H.R. Deep Sky (K81)
Ritchey Chretien
ICX453AQ / R / 90.0
-4.5 ± 5.8
2021-10-25 Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 50.0
2.2 ± 0.7
2021-10-21 Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 30.0
0.6 ± 2.6
2021-09-12 Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / R / 40.0
4.9 ± 1.9
2021-07-28 Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 60.0
0.4 ± 0.7
2020-11-08 Alessandro Nastasi
Galhassin Robotic Telescope 1 (GRT1)
Officina Stellare RiLa 400
FLI ProLine 16803 / z' / 90.0
-2.2 ± 3.0 - Data available
2020-11-02 Simon Dawes
William James II Observatory
Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / R / 45.0
-1.0 ± 2.6 - Data available
2020-09-13 David Wright
Yorick (private observatory)
Ritchey-Chretien
QSI 683WSG-8 / R / 85.0
-3.3 ± 2.4 - Data available
2020-08-12 Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)
Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / B / 30.0
-0.2 ± 1.2 - Data available
2020-08-12 Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / R / 120.0
-0.3 ± 1.9 - Data available
2020-08-05 Adam Popowicz
Observatory Pyskowice
RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 60.0
1.6 ± 3.2 - Data available
2020-07-26 Fabio Mortari
Hypatia Observatory
Newton 250mm f/4.9
Sbig ST8-XE / R / 120.0
3.7 ± 1.6 - Data available
2020-07-19 Antonio Marino
UAN c/o INAF-Osservatorio Astronomico di Capodimonte, Naples ITALY
MEADE
CCD Atik 383L / Clear / 60.0
-3.5 ± 4.3
2020-07-15 Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 60.0
0.6 ± 1.6 - Data available
2020-01-10 Dimitrios Deligeorgopoulos
Artemis Observatory
GSO RC
Atik 16 HR / R / 60.0
4.5 ± 4.3 - Data available
2019-12-30 Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / R / 60.0
-2.5 ± 1.6 - Data available
2019-08-07 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / V / 60.0
-0.4 ± 1.6 - Data available
2015-09-26 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / V / 120.0
2.0 ± 1.6 - Data available


Literature Mid-times

Observation
Date
Mid-time Time format Reference O-C
minutes
2018-11-05 2458428.2875 ± 0.0011 BJD_TDB Maciejewski et al. 2018 -0.7 ± 1.6
2018-09-05 2458367.4129 ± 0.0014 BJD_TDB Maciejewski et al. 2018 -0.6 ± 2.0
2018-01-07 2458126.349 ± 0.00084 BJD_TDB Maciejewski et al. 2018 -0.7 ± 1.2
2017-11-23 2458081.3019 ± 0.00085 BJD_TDB Maciejewski et al. 2018 -0.5 ± 1.2
2017-09-30 2458026.5167 ± 0.00073 BJD_TDB Maciejewski et al. 2018 2.4 ± 1.1
2017-09-23 2458020.42711 ± 0.00054 BJD_TDB Maciejewski et al. 2018 -0.6 ± 0.8
2017-09-19 2458015.5573 ± 0.00046 BJD_TDB Maciejewski et al. 2018 -0.4 ± 0.7
2017-08-15 2457981.4677 ± 0.00077 BJD_TDB Maciejewski et al. 2018 -0.0 ± 1.1
2017-07-25 2457959.5526 ± 0.00054 BJD_TDB Maciejewski et al. 2018 -0.3 ± 0.8
2015-10-11 2457306.97624 ± 0.00028 BJD_TDB Beatty et al. 2020 0.3 ± 0.4
2013-10-18 2456583.7843 ± 0.0006 BJD_UTC Beatty et al. 2017 0.7 ± 0.9
2012-09-11 2456182.0142 ± 0.0023 BJD_TDB Beatty et al. 2014 3.7 ± 3.3
2012-09-10 2456180.7969 ± 0.0022 BJD_TDB Beatty et al. 2014 4.0 ± 3.2
2012-01-07 2455933.6432 ± 0.0004 BJD_TDB Siverd et al. 2012 0.5 ± 0.6
2012-01-01 2455927.55574 ± 0.00041 BJD_TDB Siverd et al. 2012 0.5 ± 0.6
2011-12-16 2455911.72553 ± 0.00044 BJD_TDB Siverd et al. 2012 -3.5 ± 0.6
2011-12-13 2455909.29289 ± 0.00028 BJD_TDB Maciejewski et al. 2018 -0.1 ± 0.4
2011-12-10 2455905.63858 ± 0.00083 BJD_TDB Siverd et al. 2012 -2.7 ± 1.2
2011-12-04 2455899.55496 ± 0.001 BJD_TDB Siverd et al. 2012 2.9 ± 1.4
2011-12-04 2455899.55407 ± 0.00043 BJD_TDB Siverd et al. 2012 1.5 ± 0.6
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