exoclock

Qatar-2b (LOW)

Discovered by: Bryan et al. 2012

The Star
Simbad
GAIA
2MASS
Qatar 2
DR2 3620030644476623616
J13503740-0648145
RA 13:50:37.4100 DEC -06:48:14.419
Parallax
5.485 mas
P.M. RA
-88.184 mas/y
P.M. DEC
-15.29 mas/y
MagV
13.3
MagR
13.45
MagI*
12.034
MagJ
11.35
MagH
10.794
MagK
10.619
MagG
13.028
MagGBP
13.695
MagGRP
12.261
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2457008.18278 ± 3.2e-05 BJDTDB
Period
1.337116562 ± 5.9e-08 days

Transit Parameters
Močnik et al. 2017
Rp/Rs
0.16327 ± 0.00019
a/Rs**
6.45 +0.05 -0.06
i
88.99 +0.2 -0.2 deg
e
-
ω
- deg
DepthR*
37.71 mmag
Duration*
1.84 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Bryan et al. 2012
Teff
4645.0 +50.0 -50.0 K
Log(g)
4.6 +0.02 -0.02 cm/s2
Fe/H
0.02 +0.08 -0.08 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 9.27"
Total Observations (Recent) 78 (9)
O-C -0.5 ± 0.16 minutes
ExoClock Observations (Recent) 33 (9)
Space Observations (Recent) 28 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 17 (0)
Kepler Rp/Rs 0.161853 ± 9.4e-05
TESS Rp/Rs -

Qatar-2b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
Qatar-2b (LOW)
2024-02-13
Gustavo Muler
Obs. Nazaret J47
lx 200
ST8 XME AO8 / R / 250.0
-0.63 ± 0.6
Qatar-2b (LOW)
2023-04-24
Jean-Claude MARIO
Observatoire de la Cabergue
T 500 Cassegrain "Arp 83"
ASI 6200 MM / Lum / 240.0
-0.25 ± 1.08
Qatar-2b (LOW)
2023-04-16
Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave 2
ZWO ASI6200 / Clear / 120.0
0.25 ± 0.68
Qatar-2b (LOW)
2023-03-29
Magdalena Szkudlarek
Deep Sky Chile - ROTUZ
PlaneWave CDK 20
QHY268M pro / R / 81.0
-0.08 ± 0.35
Qatar-2b (LOW)
2023-03-27
Claudio Lopresti
Claudio Lopresti
Mak-Newton
CCD Sbig ST10xme / R / 240.0
2.99 ± 3.31
Qatar-2b (LOW)
2023-03-21
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-0.73 ± 0.32
Qatar-2b (LOW)
2023-03-21
Jean-Pascal Vignes
Deep Sky Chile
Planewave CDK400
QHYCCD 600M / Lum / 90.0
-2.47 ± 0.59
Qatar-2b (LOW)
2023-03-01
Enrique Arce
Vallbona Observatory
Newton 10" f4
Sbig ST7-XME / Clear / 300.0
-1.89 ± 0.81
Qatar-2b (LOW)
2023-02-25
Miguel Ángel Álava Amat
Sarriguren
Meade SC 8"
Asi 1600 MM / Lum / 240.0
0.47 ± 1.12
Qatar-2b (LOW)
2022-05-23
Richard Yorke
Observatorio del Teide
Dall-Kirkham Astrograph telescope
FLI ProLine KAF-16803 CCD camera / R / 60.0
-0.87 ± 0.43
Qatar-2b (LOW)
2022-05-10
Tobias Gesser
TURMX Observatory
Planewave CDK17
QHY600M / rpr / 120.0
0.93 ± 0.58
Qatar-2b (LOW)
2022-04-24
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
3.24 ± 1.73
Qatar-2b (LOW)
2022-02-25
Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0
3.56 ± 2.02
Qatar-2b (LOW)
2022-02-25
Adrian Jones
Private Observatory (I64)
Meade ACF 30cm
QSI 583 / Lum / 200.0
-0.93 ± 1.24
Qatar-2b (LOW)
2022-02-09
Bruno Monteleone
Osservatorio Astronomico La Macchina del Tempo
GSO RC
ASI1600MM / Clear / 120.0
-0.15 ± 0.92
Qatar-2b (LOW)
2021-06-12
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
0.2 ± 0.36
Qatar-2b (LOW)
2021-06-08
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
0.61 ± 0.43
Qatar-2b (LOW)
2021-05-10
Vojtěch Školník
Broumov NM Observatory
Meade LX90 ACF
MI C2-7000A / Clear / 90.0
2.69 ± 1.15
Qatar-2b (LOW)
2021-05-06
Stephen Futcher
Hampshire Astronomical Group, Clanfield
Ritchey-Chrétien
Moravian G4-9000 / R / 120.0
0.24 ± 0.33
Qatar-2b (LOW)
2021-04-30
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
0.44 ± 0.43
Qatar-2b (LOW)
2021-04-18
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
0.45 ± 0.33
Qatar-2b (LOW)
2021-02-18
Roger Dymock
MicroObservatory located at Whipple Observatory
Maksutov reflector
KAF 1402ME / Clear / 60.0
-2.19 ± 3.02
Qatar-2b (LOW)
2020-07-14
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-1.01 ± 0.72
Qatar-2b (LOW)
2020-06-08
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-0.08 ± 0.43
Qatar-2b (LOW)
2020-05-22
Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 60.0
-1.38 ± 1.15
Qatar-2b (LOW)
2020-05-12
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
0.97 ± 1.01
Qatar-2b (LOW)
2020-04-27
Wonseok Kang
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
PL-16803 (FLI) / R / 120.0
-1.21 ± 0.43
Qatar-2b (LOW)
2020-04-27
Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
-2.58 ± 0.35
Qatar-2b (LOW)
2020-04-24
Nikolaos Paschalis
Nunki Observatory
Officina Stellare RILA 400
SBIG STXL 11002 / R / 60.0
-0.73 ± 1.3
Qatar-2b (LOW)
2020-04-14
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
0.9 ± 0.43
Qatar-2b (LOW)
2020-02-11
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
2.02 ± 0.43
Qatar-2b (LOW)
2019-05-15
Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / V / 120.0
1.24 ± 0.86
Qatar-2b (LOW)
2015-03-26
Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / R / 30.0
1.98 ± 0.58

Space Observations

Planet
Observation Date
Mission O-C
minutes
Qatar-2b (LOW)
2015-09-26
K20.03 ± 0.2
Qatar-2b (LOW)
2015-09-24
K2-0.02 ± 0.26
Qatar-2b (LOW)
2015-09-20
K2-0.35 ± 0.23
Qatar-2b (LOW)
2015-09-14
K20.44 ± 0.24
Qatar-2b (LOW)
2015-09-10
K2-0.06 ± 0.17
Qatar-2b (LOW)
2015-09-07
K20.12 ± 0.11
Qatar-2b (LOW)
2015-08-29
K20.02 ± 0.32
Qatar-2b (LOW)
2015-08-27
K2-0.08 ± 0.27
Qatar-2b (LOW)
2015-08-26
K20.39 ± 0.52
Qatar-2b (LOW)
2015-08-23
K2-0.13 ± 0.17
Qatar-2b (LOW)
2015-08-22
K20.06 ± 0.16
Qatar-2b (LOW)
2015-08-21
K20.27 ± 0.14
Qatar-2b (LOW)
2015-08-19
K2-0.07 ± 0.12
Qatar-2b (LOW)
2015-08-18
K2-0.14 ± 0.11
Qatar-2b (LOW)
2015-08-17
K20.09 ± 0.32
Qatar-2b (LOW)
2015-08-14
K20.66 ± 0.45
Qatar-2b (LOW)
2015-08-13
K2-0.01 ± 0.17
Qatar-2b (LOW)
2015-08-11
K20.03 ± 0.27
Qatar-2b (LOW)
2015-08-09
K2-0.01 ± 0.14
Qatar-2b (LOW)
2015-08-07
K2-0.26 ± 0.16
Qatar-2b (LOW)
2015-07-30
K2-0.72 ± 0.24
Qatar-2b (LOW)
2015-07-23
K20.04 ± 0.14
Qatar-2b (LOW)
2015-07-22
K2-0.1 ± 0.17
Qatar-2b (LOW)
2015-07-21
K20.13 ± 0.2
Qatar-2b (LOW)
2015-07-19
K20.04 ± 0.11
Qatar-2b (LOW)
2015-07-18
K2-0.03 ± 0.12
Qatar-2b (LOW)
2015-07-17
K2-0.02 ± 0.11
Qatar-2b (LOW)
2015-07-14
K2-0.01 ± 0.1

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2013-02-16 Mancini et al. 2014 -0.23 ± 0.39
2012-05-09 Mancini et al. 2014 -0.12 ± 0.33
2012-05-09 Mancini et al. 2014 -0.24 ± 0.23
2012-05-09 Mancini et al. 2014 -0.64 ± 0.4
2012-05-09 Mancini et al. 2014 -0.7 ± 0.26
2012-04-21 Mancini et al. 2014 0.26 ± 0.17
2012-04-21 Mancini et al. 2014 0.04 ± 0.14
2012-04-21 Mancini et al. 2014 -0.22 ± 0.22
2012-04-17 Mancini et al. 2014 0.82 ± 0.22
2012-04-17 Mancini et al. 2014 0.08 ± 0.22
2012-04-17 Mancini et al. 2014 0.05 ± 0.17
2012-04-17 Mancini et al. 2014 -0.46 ± 0.14
2012-04-05 Mancini et al. 2014 0.9 ± 0.26
2012-04-05 Mancini et al. 2014 0.4 ± 0.23
2012-04-05 Mancini et al. 2014 0.33 ± 0.32
2012-04-05 Mancini et al. 2014 0.18 ± 0.24
2011-03-03 Mancini et al. 2014 -0.06 ± 0.13
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