exoclock
exoclock
Qatar-1b
Discovered by: Alsubai et al. 2011
The Star
Simbad
GAIA
2MASS
Qatar 1
DR2 2244830490514284928
J20133160+6509433
RA 20:13:31.6176 DEC +65:09:43.490
Parallax
5.359 mas
P.M. RA
12.636 mas/y
P.M. DEC
58.17 mas/y
MagV
12.84
MagR
12.65
MagI
11.71
MagJ
10.999
MagH
10.527
MagK
10.409
MagG
12.476
MagGBP
13.033
MagGRP
11.791
* calculated from GAIA magnitudes

Ephemeris - Verified True
Collins et al. 2017
Mid-time
2456234.10322 ± 6e-05 BJDTDB
Period
1.4200242 ± 2.2e-07 days

Transit Parameters
Collins et al. 2017
Rp/Rs
0.1463 ± 0.0006
a/Rs
6.25 +0.07 -0.07
i
84.08 +0.16 -0.15 deg
e
-
ω
- deg
DepthR*
25.4 mmag
Duration*
1.66 hours
* calculated from the other parameters, using PyLightcurve

Limb Darkening Parameters
Alsubai et al. 2011
Teff
4861.0 +125.0 -125.0 K
Log(g)
4.54 +0.04 -0.04 cm/s2
Fe/H
0.2 +0.1 -0.1 dex
ExoClock Status
Observing Priority
Total Observations (Recent)
O-C minutes
Total Literature Mid-times
LOW
84 (23)
0.97±0.06
0
Qatar-1b


ExoClock Observations
Observation
Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
2021-08-31 Rafael González Farfán
Uraniborg
Schmidt-Cassegrain
Atik 414ex / V / 120.0
-2.8 ± 2.2
2021-08-23 Paolo Arcangelo Matassa
P.M.P.H.R. Deep Sky (K81)
Ritchey Chretien
ICX453AQ / Clear / 60.0
1.5 ± 2.9
2021-08-16 Paolo Arcangelo Matassa
P.M.P.H.R. Deep Sky (K81)
Ritchey Chretien
ICX453AQ / Clear / 90.0
1.9 ± 3.2
2021-08-16 Nello Ruocco
Osservatorio Astronomico Nastro Verde di Sorrento MPC code C82
SC Meade LX200 GPS on equatorial fork
Sbig ST10XME / R / 180.0
0.6 ± 1.2
2021-08-06 Mario Morales Aimar
Observatorio de Sencelles MPC K14
Reflector 10"
SBIG ST7-XME / Clear / 60.0
0.4 ± 0.4
2021-07-20 Ivo Peretto
MarSEC Marana Space Explorer Center
R-C
Moravia G2-1600 MkII / Clear / 40.0
2.1 ± 0.7
2021-07-17 Martin Smith
Heathwood Road
Celestron EdgeHD 800
Atik 414 ex / Clear / 90.0
2.3 ± 1.0
2021-07-17 Georgios Lekkas
Specca Observatory
Newtonian Reflector Sky-Watcher 250/1200 mm
Atik 320E / R / 70.0
-3.5 ± 4.3
2021-07-10 Jean-Bernard PIOPPA
La Roque-Esclapon
KEPLER
ATIK 383 L+ / R / 240.0
-1.8 ± 1.3
2021-06-30 Jean-Marc MARI
Biot
Skywatcher Quattro 250P
ZWO Asi1600MM Pro / Clear / 120.0
-1.7 ± 0.7
2021-06-13 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave 2
ZWO ASI6200 / Clear / 120.0
2.4 ± 0.6
2021-06-13 Didier Laloum
Observatoire Privé du Mont (OPM)
RC 8 GSO
Atik 383L+ / Astrodon ExoPlanet-BB / 120.0
-0.0 ± 0.7
2021-06-13 Valère Perroud
Observatoire de Duines
RC 10
Moravian G2-4000 / Lum / 120.0
-0.6 ± 0.9
2021-06-13 Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 120.0
-2.5 ± 1.3
2021-06-03 Carmelo Falco
GAL Hassin Robotic Telescope 2 (GRT2) - Multiband
Giacometti-Fogale RC16 - 2
Andor Apogee Aspen CG16M / g' / 60.0
0.6 ± 0.9
2021-06-03 Carmelo Falco
GALHassin Robotic Telescope 2 (GRT2)
Giacometti-Fogale RC16
Andor Apogee Aspen CG16M / R / 60.0
0.2 ± 1.0
2021-05-27 Claudio Lopresti
Claudio Lopresti
Mak-Newton
CCD Sbig ST10xme / I / 240.0
-2.4 ± 1.4
2021-05-25 Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 120.0
-1.8 ± 1.6
2021-05-17 Fabio Mortari
Hypatia Observatory
Ritchey Chretienne 250mm f/5.3
Sbig ST8-XE / R / 246.0
-1.1 ± 1.7
2021-05-07 Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 93.0
0.0 ± 1.0
2021-04-30 Üllar Kivila
Science Centre AHHAA
TS Optics RC 203/1624
ZWO ASI224MC / Lum / 120.0
-1.4 ± 1.6
2021-04-20 Lorenzo Betti
Osservatorio Polifunzionale del Chianti
RC-80cm-G4
Moravian G4 - KAF 09000 / V / 90.0
0.1 ± 0.4
2021-03-24 Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
1.8 ± 0.7
2020-10-26 John Savage
Z42 Rushay Farm Observatory
Celestron 14Edge
ZWO ASI6200MM / R / 120.0
3.0 ± 0.9
2020-09-29 Stephane Ferratfiat
Observatoire des Baronnies Provençales
Astelco
ZWO ASI6200 / Clear / 120.0
-0.6 ± 0.4
2020-09-28 Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
0.7 ± 0.4
2020-09-22 Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
0.7 ± 0.4
2020-08-19 Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
0.4 ± 0.4
2020-08-06 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco2
ZWO ASI6200 / Clear / 120.0
2.7 ± 0.3
2020-07-20 Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0
2.5 ± 0.6
2020-07-20 Jacques Michelet
Saint-Auban sur l'Ouvèze
Celestron C11 Edge HD
QSI-632 WSG / Astrodon ExoPlanet-BB / 90.0
1.1 ± 0.6
2020-07-18 Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Clear / 120.0
1.5 ± 0.6
2020-05-29 Roger Dymock
MicroObservatory located at Whipple Observatory
Maksutov reflector
KAF 1402ME / Clear / 60.0
2.4 ± 2.0
2020-05-27 Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 60.0
0.3 ± 1.4
2020-05-17 Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
0.7 ± 0.6
2020-05-07 Mauro Calo’
Cavallino
RC
SBIG ST10 / Lum / 120.0
3.1 ± 0.7
2020-05-07 Alberto Tomatis
Alto-Observatory
RC
STL 6303 / Lum / 120.0
1.0 ± 0.9
2019-10-20 Nick Sioulas
NOAK Observatory
SKYWATCHER
ATIK 460exm / R / 60.0
-0.7 ± 1.2 - Data available
2019-09-30 Pavol Gajdoš
AO Kolonica
CDK20
G4-16000 / V / 40.0
0.8 ± 2.0
2019-09-13 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 60.0
-0.1 ± 0.3 - Data available
2019-08-17 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Clear / 60.0
1.7 ± 0.2 - Data available
2019-07-31 Pavel Pintr
Horni Halze
Celestron C9.25 with Hyperstar f2.2
ASI ZWO 1600 MONO / Clear / 30.0
7.8 ± 0.6 - Data available
2019-07-31 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Clear / 120.0
-0.0 ± 0.3 - Data available
2019-07-04 Mario Morales Aimar
Observatorio de Sencelles MPC K14
10" Meade Schmidt Cassegrain
SBIG ST7-XME / Clear / 240.0
3.4 ± 2.0
2019-07-04 Stephane Neveu
Centre d'astronomie Jean Marc Salomon
Newton
SBIG STT 8300 M / R / 30.0
1.1 ± 0.7
2019-06-24 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
3.2 ± 0.9 - Data available
2019-05-31 Fabio Salvaggio
WBRO - K49
C9.25"
SBIG ST8-XME / V / 300.0
2.0 ± 1.3
2019-05-31 Alessandro Marchini
Astronomical Observatory, University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / I / 180.0
-0.2 ± 1.0
2019-04-04 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
0.5 ± 0.7 - Data available
2019-02-17 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Lum / 120.0
1.8 ± 0.6 - Data available
2018-10-03 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
-1.8 ± 0.9 - Data available
2018-04-24 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 120.0
1.3 ± 0.4 - Data available
2017-11-09 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 60.0
1.2 ± 0.4 - Data available
2017-10-23 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 120.0
1.3 ± 0.4 - Data available
2017-09-16 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
1.1 ± 0.7 - Data available
2017-07-24 Mario Morales Aimar
Observatorio de Sencelles MPC K14
10" Meade Schmidt Cassegrain
SBIG ST7-XME / Clear / 100.0
1.8 ± 0.9
2016-11-29 Cédric Pereira
VT
Celestron C14
SBIG ST8-XME / I / 90.0
-2.9 ± 1.9 - Data available
2016-08-03 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 60.0
0.3 ± 0.2 - Data available
2016-08-03 Angelos Tsiaras
Holomon Astronomical Station
Celestron C11
ATIK4000/11000 / R / 60.0
-1.5 ± 1.7 - Data available
2016-05-07 Angelos Tsiaras
Holomon Astronomical Station
Celestron C11
ATIK4000/11000 / R / 60.0
0.0 ± 2.7 - Data available
2016-05-04 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 180.0
3.0 ± 0.9 - Data available
2016-01-23 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 60.0
-1.0 ± 0.4 - Data available
2015-12-27 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Lum / 60.0
1.7 ± 0.4 - Data available
2015-11-30 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 180.0
1.8 ± 0.6 - Data available
2015-11-23 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
0.2 ± 1.0 - Data available
2015-10-14 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
1.1 ± 0.9 - Data available
2015-10-07 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 240.0
1.4 ± 0.6 - Data available
2015-09-20 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Clear / 240.0
2.5 ± 0.6 - Data available
2015-09-17 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 240.0
-0.6 ± 0.6 - Data available
2015-09-10 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 240.0
3.8 ± 0.7 - Data available
2015-09-07 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 240.0
1.4 ± 0.7 - Data available
2015-08-24 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Clear / 120.0
1.6 ± 0.4 - Data available
2015-08-21 Anaël Wünsche
Observatoire des Baronnies Provençales
ASA300
FLI8300M / Clear / 240.0
2.2 ± 0.7 - Data available
2015-08-21 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Clear / 120.0
0.7 ± 0.3 - Data available
2015-07-18 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Clear / 240.0
1.8 ± 0.4 - Data available
2015-06-28 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 180.0
3.1 ± 0.6 - Data available
2015-06-21 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / R / 120.0
0.4 ± 0.6 - Data available
2015-01-06 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / V / 60.0
-0.5 ± 0.7
2015-01-06 Antonio Marino
UAN c/o INAF-Osservatorio Astronomico di Capodimonte, Naples ITALY
SC11
CCD Atik 314L / Clear / 90.0
-3.3 ± 2.7 - Data available
2014-02-26 Angelos Tsiaras
Holomon Astronomical Station
Celestron C11
ATIK4000/11000 / Clear / 70.0
-0.3 ± 1.7 - Data available
2014-02-16 Angelos Tsiaras
Holomon Astronomical Station
Celestron C11
ATIK4000/11000 / Clear / 60.0
2.5 ± 1.7 - Data available
2013-05-01 Angelos Tsiaras
Holomon Astronomical Station
Celestron C11
ATIK4000/11000 / Clear / 60.0
-1.0 ± 1.2 - Data available
2012-08-07 Angelos Tsiaras
Holomon Astronomical Station
Celestron C11
ATIK4000/11000 / Clear / 60.0
-2.1 ± 1.0 - Data available
2012-07-04 Claudio Lopresti
Claudio Lopresti
Mak-Newton
CCD Sbig ST10xme / V / 180.0
-3.0 ± 0.9 - Data available
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