exoclock

Qatar-2b

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. 2021
Mid-time
2457173.98591 ± 3e-05 BJDTDB
Period
1.33711716 ± 1.2e-07 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 to produce a duration that matches the 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
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes
LOW
26 (8)

17

-2.22±0.1

Qatar-2b


ExoClock Observations

Observation
Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
2022-05-23 Richard Yorke
Observatorio del Teide
Dall-Kirkham Astrograph telescope
FLI ProLine KAF-16803 CCD camera / R / 60.0
-3.5 ± 0.4
2022-05-10 Tobias Gesser
TURMX Observatory
Planewave CDK17
QHY600M / r' / 120.0
-1.7 ± 0.6
2022-04-24 Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 240.0
0.6 ± 1.7
2022-03-11 Chiahui Wang
NTNU ES Observatory
RCOS 16" f/8.4 Ritchey-Chretien
Atik One 6 / V / 90.0
-0.3 ± 2.0
2022-02-25 Paolo Arcangelo Matassa
P:M.P.H.R. Deep Sky (K81)
Ritchey Chretien 40cm-F5.3
CCD ICX453AQ / Lum / 60.0
0.4 ± 2.0
2022-02-25 Adrian Jones
Private Observatory (I64)
Meade ACF 30cm
QSI 583 / Lum / 200.0
-3.5 ± 1.3
2022-02-09 Bruno Monteleone
Osservatorio Astronomico La Macchina del Tempo
GSO RC
ASI1600MM / Clear / 120.0
-2.7 ± 1.0
2021-06-12 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-2.2 ± 0.4
2021-06-08 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-1.8 ± 0.4
2021-05-10 Vojtěch Školník
Broumov NM Observatory
Meade LX90 ACF
MI C2-7000A / Clear / 90.0
0.3 ± 1.2
2021-05-06 Stephen Futcher
Hampshire Astronomical Group, Clanfield
Ritchey-Chrétien
Moravian G4-9000 / R / 120.0
-2.1 ± 0.3
2021-04-30 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-1.9 ± 0.4
2021-04-18 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-1.9 ± 0.3
2021-02-18 Andre Kovacs
MicroObservatory Cecillia
152mm Maksutov
Kodak KAF-1402ME / Clear / 60.0
-3.2 ± 3.0
2021-02-18 Roger Dymock
MicroObservatory located at Whipple Observatory
Maksutov reflector
KAF 1402ME / Clear / 60.0
-4.5 ± 3.0
2020-07-14 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-3.2 ± 0.7 - Data available
2020-06-08 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-2.2 ± 0.4 - Data available
2020-05-22 Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 60.0
-3.5 ± 1.2 - Data available
2020-05-12 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-1.2 ± 1.0 - Data available
2020-04-27 Wonseok Kang
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope (1)
PL-16803 (FLI) / R / 120.0
-3.3 ± 0.4 - Data available
2020-04-27 Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
-4.7 ± 0.3 - Data available
2020-04-24 Nikolaos Paschalis
Nunki Observatory
Officina Stellare RILA 400
SBIG STXL 11002 / R / 60.0
-2.9 ± 1.3 - Data available
2020-04-14 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-1.2 ± 0.4 - Data available
2020-02-11 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-0.1 ± 0.4 - Data available
2019-05-15 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / V / 120.0
-0.7 ± 0.9 - Data available
2015-03-26 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / R / 30.0
1.1 ± 0.6 - Data available


Literature Mid-times

Observation
Date
Mid-time Time format Reference O-C
minutes
2013-02-16 2456339.62434 ± 0.00027 BJD_TDB Mancini et al. 2014 -0.7 ± 0.4
2012-05-09 2456057.49282 ± 0.00023 BJD_TDB Mancini et al. 2014 -0.4 ± 0.3
2012-05-09 2456057.49274 ± 0.00016 BJD_TDB Mancini et al. 2014 -0.5 ± 0.2
2012-05-09 2456057.49246 ± 0.00028 BJD_TDB Mancini et al. 2014 -0.9 ± 0.4
2012-05-09 2456057.49242 ± 0.00018 BJD_TDB Mancini et al. 2014 -1.0 ± 0.3
2012-04-21 2456038.77345 ± 0.00012 BJD_TDB Mancini et al. 2014 0.0 ± 0.2
2012-04-21 2456038.77329 ± 0.0001 BJD_TDB Mancini et al. 2014 -0.2 ± 0.1
2012-04-21 2456038.77312 ± 0.00015 BJD_TDB Mancini et al. 2014 -0.5 ± 0.2
2012-04-17 2456034.76249 ± 0.00015 BJD_TDB Mancini et al. 2014 0.6 ± 0.2
2012-04-17 2456034.76198 ± 0.00015 BJD_TDB Mancini et al. 2014 -0.2 ± 0.2
2012-04-17 2456034.76196 ± 0.00012 BJD_TDB Mancini et al. 2014 -0.2 ± 0.2
2012-04-17 2456034.76157 ± 0.0001 BJD_TDB Mancini et al. 2014 -0.7 ± 0.1
2012-04-05 2456022.7285 ± 0.00018 BJD_TDB Mancini et al. 2014 0.7 ± 0.3
2012-04-05 2456022.72815 ± 0.00016 BJD_TDB Mancini et al. 2014 0.2 ± 0.2
2012-04-05 2456022.7281 ± 0.00022 BJD_TDB Mancini et al. 2014 0.1 ± 0.3
2012-04-05 2456022.728 ± 0.00017 BJD_TDB Mancini et al. 2014 -0.1 ± 0.2
2011-03-03 2455624.267096 ± 8.7e-05 BJD_TDB Mancini et al. 2014 -0.0 ± 0.1
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