exoclock

Qatar-9b (LOW)

Discovered by: Alsubai et al. 2019

The Star
Simbad
GAIA
2MASS
Qatar 9
DR2 1048109222955337600
J10425960+6057510
RA 10:42:59.5933 DEC +60:57:51.159
Parallax
4.649 mas
P.M. RA
-23.741 mas/y
P.M. DEC
-21.274 mas/y
MagV
14.023
MagR
13.84
MagI
13.496
MagJ
11.835
MagH
11.235
MagK
11.104
MagG
13.687
MagGBP
14.439
MagGRP
12.859
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2459275.4837 ± 0.00012 BJDTDB
Period
1.54077512 ± 4.5e-07 days

Transit Parameters
Alsubai et al. 2019
Rp/Rs
0.1489 ± 0.0009
a/Rs
7.236 +0.069 -0.069
i
89.23 +0.64 -0.64 deg
e
-
ω
- deg
DepthR*
31.38 mmag
Duration*
1.87 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Alsubai et al. 2019
Teff
4309.0 +31.0 -31.0 K
Log(g)
4.61 +0.01 -0.01 cm/s2
Fe/H
0.252 +0.076 -0.076 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 10.7"
Total Observations (Recent) 110 (16)
O-C 0.52 ± 0.15 minutes
ExoClock Observations (Recent) 87 (16)
Space Observations (Recent) 16 (0)
ETD Observations (Recent) 6 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.1462 ± 0.0012

Qatar-9b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
Qatar-9b (LOW)
2024-06-25
Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / Clear / 300.0
0.22 ± 2.88
Qatar-9b (LOW)
2024-05-15
Ian Sharp
PixelSkies
Celestron C11 Edge HD
Starlight Xpress Trius Pro SX694 / R / 180.0
0.59 ± 1.73
Qatar-9b (LOW)
2024-05-15
Adrian Jones
Private Observatory (I64)
Meade ACF 30cm
QSI 583 / Lum / 200.0
0.08 ± 1.18
Qatar-9b (LOW)
2024-03-23
Mark Salisbury
POST
Orion Optics ODK
SBIG ST-10 XME / Clear / 240.0
0.31 ± 0.39
Qatar-9b (LOW)
2024-03-23
Simon Dawes
William James II
Celestron Edge11 HD
Risingcam Monochrome SONY imx571 / Lum / 300.0
-1.24 ± 1.73
Qatar-9b (LOW)
2024-03-23
Martin Crow
Burnham Observatory
Celestron C9.25
SX694 mono / Clear / 300.0
-2.97 ± 3.31
Qatar-9b (LOW)
2024-03-16
Mario Morales-Aimar
Observatorio de Sencelles MPC K14
Reflector 10"
SBIG ST7-XME / Clear / 150.0
-0.51 ± 1.11
Qatar-9b (LOW)
2024-02-18
Jordi González-Edo
Landete-Kea
C11
ASI 2600MM pro / Lum / 60.0
0.43 ± 1.05
Qatar-9b (LOW)
2024-02-18
Esteban Reina
Observatori de Masquefa
Meade LX200
ZWO ASI 294 MM Pro / R / 180.0
0.09 ± 1.2
Qatar-9b (LOW)
2024-02-11
John Collins
JC_Wrexham
Meade LX200GPS
ASI-290m / Clear / 30.0
-4.36 ± 1.35
Qatar-9b (LOW)
2024-01-22
Ian Sharp
PixelSkies
Celestron C11 Edge HD
Starlight Xpress Trius Pro SX694 / R / 180.0
-0.48 ± 1.87
Qatar-9b (LOW)
2024-01-13
Changhyun Ryu
Korea National University of Education MAO
Planwave CDK500
Moravian C3-61000 / gpr / 150.0
-4.01 ± 2.02
Qatar-9b (LOW)
2023-12-23
Ian Sharp
PixelSkies
Celestron C11 Edge HD
Starlight Xpress Trius Pro SX694 / R / 180.0
-4.51 ± 2.3
Qatar-9b (LOW)
2023-12-16
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
2.13 ± 1.3
Qatar-9b (LOW)
2023-12-07
Changhyun Ryu
Korea National University of Education MAO
Planwave CDK500
Moravian C3-61000 / ipr / 150.0
-0.42 ± 0.96
Qatar-9b (LOW)
2023-12-03
Xavier Bros
Anysllum
Newton Orion Optics 14" f4.6
ASI2600MM Pro / R / 60.0
-1.37 ± 1.12
Qatar-9b (LOW)
2023-05-22
Lorenzo Cabona
OARPAF
Astelco T-800
STX-16801 SBIG / R / 210.0
-0.27 ± 0.65
Qatar-9b (LOW)
2023-05-02
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0
-1.92 ± 1.17
Qatar-9b (LOW)
2023-04-15
Mark Salisbury
POST
Orion Optics ODK
SBIG ST-10 XME / Clear / 240.0
1.84 ± 0.59
Qatar-9b (LOW)
2023-04-11
Bryan Martin
Tiger Butte Observatory Remote
AG Optical IDK
ZWO ASI 294 / Lum / 180.0
-2.2 ± 1.12
Qatar-9b (LOW)
2023-03-06
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 180.0
5.15 ± 1.34
Qatar-9b (LOW)
2023-03-06
Jean-Claude MARIO
Observatoire de la Cabergue
T 500 Cassegrain "Arp 83"
ASI 6200 MM / Clear / 240.0
0.24 ± 0.76
Qatar-9b (LOW)
2023-03-03
Eric Miny
BLOIS SOLOGNE ASTRONOMIE OBSERVATORY
Newton T305
QSI 683WS / Lum / 180.0
-1.27 ± 2.3
Qatar-9b (LOW)
2023-03-03
Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / AstrodonExoPlanet-BB / 120.0
-1.99 ± 1.44
Qatar-9b (LOW)
2023-02-17
Miguel Ángel Álava Amat
Sarriguren
Meade SC 8"
Asi 1600 MM / Lum / 240.0
5.32 ± 2.16
Qatar-9b (LOW)
2023-02-14
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave 2
ZWO ASI6200 / Clear / 120.0
1.52 ± 0.56
Qatar-9b (LOW)
2023-02-14
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0
-0.25 ± 0.73
Qatar-9b (LOW)
2023-02-14
Matthieu Bachschmidt
Gonachon
Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 120.0
-1.76 ± 0.78
Qatar-9b (LOW)
2023-02-14
christian PANTACCHINI
Observatoire de BENAYES
Skywhatcher Newton
SBIG STF-8300M / Lum / 240.0
-2.1 ± 1.73
Qatar-9b (LOW)
2023-02-11
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0
1.5 ± 0.89
Qatar-9b (LOW)
2023-02-04
Robert Roth
TURMX Observatory
Planewave CDK17
QHY600M / rpr / 120.0
1.05 ± 0.82
Qatar-9b (LOW)
2023-02-04
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
-0.3 ± 1.28
Qatar-9b (LOW)
2023-02-01
Javier Flores Martín
CAHA
GSO40
zwo 1600mm pro / Lum / 45.0
1.81 ± 0.32
Qatar-9b (LOW)
2023-01-28
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
0.39 ± 1.73
Qatar-9b (LOW)
2022-10-20
Adam Popowicz
Observatory Pyskowice
RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 240.0
-2.95 ± 3.02
Qatar-9b (LOW)
2022-05-16
Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
-0.55 ± 0.86
Qatar-9b (LOW)
2022-05-12
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 300.0
-1.81 ± 1.73
Qatar-9b (LOW)
2022-04-25
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
-1.63 ± 0.86
Qatar-9b (LOW)
2022-04-18
Claudio Lopresti
Claudio Lopresti
Meade LX200 12"
CCD Sbig ST9xe / R / 180.0
-1.77 ± 1.73
Qatar-9b (LOW)
2022-04-08
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
-0.87 ± 1.73
Qatar-9b (LOW)
2022-04-05
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 180.0
-3.82 ± 1.73
Qatar-9b (LOW)
2022-03-09
Ivo Peretto
MarSEC Marana Space Explorer Center
R-C
Moravia G2-1600 MkII / Clear / 180.0
-0.11 ± 0.72
Qatar-9b (LOW)
2022-03-09
Pieter Vuylsteke
PieterVuylsteke
Refract
ZWO 2600mm mono ASP-C / Clear / 360.0
-1.27 ± 1.44
Qatar-9b (LOW)
2022-03-09
Raniero Albanesi
157 Frasso Sabino
Cassegrain 14.5"
FLI PROLINE PL1301E-1 / R / 120.0
-1.7 ± 1.01
Qatar-9b (LOW)
2022-03-09
Claudio Lopresti
Claudio Lopresti
Meade LX200 12"
CCD Sbig ST9xe / Lum / 180.0
-1.99 ± 1.15
Qatar-9b (LOW)
2022-02-28
Chiahui Wang
NTNU ES Observatory
RCOS 16" f/8.4 Ritchey-Chretien
Atik One 6 / R / 60.0
1.69 ± 3.17
Qatar-9b (LOW)
2022-02-23
Claudio Lopresti
Claudio Lopresti
Meade LX200 12"
CCD Sbig ST9xe / Lum / 240.0
-0.44 ± 1.3
Qatar-9b (LOW)
2022-02-10
Tobias Gesser
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
-1.19 ± 1.15
Qatar-9b (LOW)
2022-02-10
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / I / 300.0
-2.63 ± 1.44
Qatar-9b (LOW)
2022-02-07
Simon Dawes
William James II Observatory
Skywatcher MN190 2
ZWO ASI 1600MM-PRO USB 3.0 Mono Camera / Clear / 120.0
-2.27 ± 2.88
Qatar-9b (LOW)
2022-02-03
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 150.0
-0.18 ± 2.74
Qatar-9b (LOW)
2022-02-03
Antonio Marino
UAN c/o INAF-Osservatorio Astronomico di Capodimonte, Naples ITALY
MEADE
CCD Atik 383L / Clear / 90.0
-3.35 ± 2.3
Qatar-9b (LOW)
2022-01-21
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
FLI Kepler CMOS 4040 / Lum / 120.0
-0.22 ± 0.86
Qatar-9b (LOW)
2022-01-18
Enrique Arce
Vallbona Observatory
Newton 10" f4
Sbig ST7-XME / Clear / 180.0
3.31 ± 4.32
Qatar-9b (LOW)
2022-01-18
Mark Salisbury
POST
Orion Optics ODK
SBIG ST-10 XME / R / 240.0
-0.0 ± 0.72
Qatar-9b (LOW)
2022-01-18
Kevin Johnson
Holbrook Observatory
Meade LX10 EMC
Atik 383L+ / Lum / 120.0
-0.58 ± 2.02
Qatar-9b (LOW)
2022-01-18
Gonzalo Fornas
CAAT
TAKA FSQ 106
ASI 1600 / Clear / 120.0
-1.01 ± 4.32
Qatar-9b (LOW)
2022-01-18
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
-1.44 ± 1.3
Qatar-9b (LOW)
2022-01-14
Stéphane Montchaud
Burgundy Observatory
Celestron 8
Zwo Asi 1600 / Lum / 120.0
2.66 ± 2.88
Qatar-9b (LOW)
2022-01-14
Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / Clear / 120.0
1.08 ± 0.43
Qatar-9b (LOW)
2022-01-14
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
FLI Kepler CMOS 4040 / Lum / 120.0
1.08 ± 0.58
Qatar-9b (LOW)
2022-01-14
Cyrille Aumasson
observatory of Baronnies Provençales
CDK PLANEWAVE 17"
zwo asi 6200 / Clear / 120.0
1.08 ± 0.43
Qatar-9b (LOW)
2022-01-14
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 120.0
-0.5 ± 2.45
Qatar-9b (LOW)
2022-01-14
Pierre Barroy
Télescope JM Salomon, Planète Sciences, Buthiers
Newton
STT 8300 / R / 60.0
-0.94 ± 0.86
Qatar-9b (LOW)
2022-01-14
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 300.0
-2.09 ± 1.3
Qatar-9b (LOW)
2022-01-11
Tõnis Eenmäe
Tartu Observatory
Planewave CDK 12.5
Apogee Alta U42 / Lum / 120.0
1.47 ± 0.91
Qatar-9b (LOW)
2022-01-07
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / rpr / 120.0
0.04 ± 0.86
Qatar-9b (LOW)
2022-01-04
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
-2.48 ± 1.3
Qatar-9b (LOW)
2022-01-01
Sebastien Brouillard
AstroQueyras
RC500
STX16803 / R / 120.0
4.5 ± 1.44
Qatar-9b (LOW)
2022-01-01
Matthieu Bachschmidt
Gonachon
Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 120.0
0.76 ± 1.3
Qatar-9b (LOW)
2021-12-22
Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
-0.61 ± 0.58
Qatar-9b (LOW)
2021-12-15
Fabio Mortari
Hypatia Observatory
Ritchey Chretienne 250mm f/5.3
Sbig ST8-XE / R / 150.0
1.08 ± 2.02
Qatar-9b (LOW)
2021-12-15
Jean-Baptiste Marquette
MrKite47
Newton Sky-Watcher 200/1000
ZWO ASI183MM Pro / R / 360.0
0.94 ± 2.88
Qatar-9b (LOW)
2021-12-15
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
0.36 ± 1.15
Qatar-9b (LOW)
2021-12-15
Alvaro Fornas
Centro Astronómico Alto Turia (CAAT). MPC J57
Planewave CDK 17"
Sbig STXL 11002 / Clear / 180.0
0.08 ± 0.72
Qatar-9b (LOW)
2021-12-12
Yves Jongen
Rasteau Observatory
Plane Wave CDK 17"
SBIG STXL 11002 / Lum / 120.0
0.72 ± 1.01
Qatar-9b (LOW)
2021-12-12
Robert Roth
TURMX Observatory
Planewave CDK17
QHY600M / rpr / 120.0
0.0 ± 0.86
Qatar-9b (LOW)
2021-12-12
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
-0.14 ± 0.86
Qatar-9b (LOW)
2021-12-12
Jean-Bernard Pioppa
La Roque-Esclapon
KEPLER
ATIK 383 L+ / R / 300.0
-1.44 ± 1.58
Qatar-9b (LOW)
2021-11-28
Robert Roth
TURMX Observatory
Planewave CDK17
QHY600M / rpr / 120.0
-0.75 ± 0.43
Qatar-9b (LOW)
2021-11-28
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
-1.04 ± 1.01
Qatar-9b (LOW)
2021-11-25
Adam Popowicz
Observatory Pyskowice
RC12" GSO
ASI ZWO 1600 MM / ATIK 11000M / R / 480.0
0.19 ± 2.02
Qatar-9b (LOW)
2021-11-21
Nataliia Maslennikova
Caucasus Mountain Observatory SAI MSU
RC-600 ASA
Andor iKon-L / R / 60.0
-1.57 ± 0.62
Qatar-9b (LOW)
2021-04-27
Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
-3.86 ± 0.72
Qatar-9b (LOW)
2021-04-07
Francesco Scaggiante
Gruppo Astrofili Salese "GALILEO GALILEI"
NEWTON 410/1710
Custom made with KAF-1603ME CCD sensor / R / 90.0
-0.0 ± 2.16
Qatar-9b (LOW)
2021-04-04
Manfred Raetz
privat observatory Herges-Hallenberg
SCT 280 /1790 (Celestron C11 with reducer)
Moravian Instruments G2-1600 / Clear / 120.0
1.65 ± 0.58
Qatar-9b (LOW)
2021-03-18
Robert Roth
TURMX Observatory
CFF Telescopes 160mm APO
ZWO ASI6200MM Pro / Lum / 120.0
0.68 ± 1.01

Space Observations

Planet
Observation Date
Mission O-C
minutes
Qatar-9b (LOW)
2021-08-18
TESS1.22 ± 1.32
Qatar-9b (LOW)
2021-08-16
TESS-0.41 ± 1.73
Qatar-9b (LOW)
2021-08-15
TESS0.56 ± 1.44
Qatar-9b (LOW)
2021-08-13
TESS0.16 ± 1.17
Qatar-9b (LOW)
2021-08-12
TESS-1.01 ± 1.25
Qatar-9b (LOW)
2021-08-10
TESS-0.26 ± 1.14
Qatar-9b (LOW)
2021-08-09
TESS0.77 ± 1.37
Qatar-9b (LOW)
2021-08-07
TESS0.81 ± 1.44
Qatar-9b (LOW)
2021-08-04
TESS-0.2 ± 1.17
Qatar-9b (LOW)
2021-08-03
TESS0.21 ± 1.38
Qatar-9b (LOW)
2021-08-01
TESS-1.23 ± 1.21
Qatar-9b (LOW)
2021-07-30
TESS0.98 ± 1.38
Qatar-9b (LOW)
2021-07-29
TESS0.67 ± 1.21
Qatar-9b (LOW)
2021-07-27
TESS-0.56 ± 1.01
Qatar-9b (LOW)
2021-07-26
TESS-0.63 ± 1.44
Qatar-9b (LOW)
2021-07-24
TESS0.42 ± 1.22

ETD Observations

Planet
Observation Date
Observer(s) ETD link O-C
minutes
Qatar-9b (LOW)
2021-04-20
Joe Garlitz16189306210.14 ± 1.3
Qatar-9b (LOW)
2021-04-17
Joe Garlitz16186729341.51 ± 1.01
Qatar-9b (LOW)
2021-04-07
Anaël Wünsche1617907365-0.15 ± 1.01
Qatar-9b (LOW)
2021-04-04
Vrašťák M16176397071.51 ± 1.3
Qatar-9b (LOW)
2021-04-04
Marc Bretton16175755050.46 ± 0.33
Qatar-9b (LOW)
2021-03-15
Matteo Cataneo, Emanuele Russo, Filippo Leveraro16160036561.19 ± 0.72

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2018-04-19 Alsubai et al. 2019 -0.27 ± 0.39
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