exoclock
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
Močnik et al. 2017
Mid-time
2457250.201605 ± 8e-06 BJDTDB
Period
1.33711677 ± 1e-07 days

Transit Parameters
Močnik et al. 2017
Rp/Rs
0.16327 ± 0.00019
a/Rs
6.524 +0.023 -0.023
i
88.99 +0.2 -0.2 deg
e
-
ω
- deg
DepthR*
37.71 mmag
Duration*
1.82 hours
* calculated from the other parameters, using PyLightcurve

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
Total Observations (Recent)
O-C minutes
Total Literature Mid-times
LOW
18 (6)
-1.27±0.11
0
Qatar-2b


ExoClock Observations
Observation
Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
2021-06-11 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-1.3 ± 0.3
2021-06-07 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-1.1 ± 0.4
2021-05-10 Vojtěch Školník
Broumov NM Observatory
Meade LX90 ACF
MI C2-7000A / Clear / 90.0
1.0 ± 1.2
2021-05-06 Stephen Futcher
Hampshire Astronomical Group, Clanfield
Ritchey-Chrétien
Moravian G4-9000 / R / 120.0
-1.3 ± 0.3
2021-04-30 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-1.1 ± 0.4
2021-04-18 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-1.1 ± 0.3
2021-02-18 Roger Dymock
MicroObservatory located at Whipple Observatory
Maksutov reflector
KAF 1402ME / Clear / 60.0
-3.5 ± 4.3
2020-07-14 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-2.2 ± 0.7
2020-06-07 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-1.5 ± 0.4
2020-05-22 Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 60.0
-2.7 ± 1.0
2020-05-12 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-0.3 ± 0.6
2020-04-27 Wonseok Kang
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope (1)
PL-16803 (FLI) / R / 120.0
-2.4 ± 0.4
2020-04-27 Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / R / 120.0
-4.1 ± 0.4
2020-04-24 Nikolaos Paschalis
Nunki Observatory
Officina Stellare RILA 400
SBIG STXL 11002 / R / 60.0
-2.6 ± 1.4
2020-04-14 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
-0.2 ± 0.6
2020-02-11 Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Clear / 120.0
0.5 ± 0.4
2019-05-15 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / V / 120.0
0.0 ± 0.7 - Data available
2015-03-26 Anaël Wünsche
Observatoire des Baronnies Provençales
Astelco
FLIPL230 / R / 30.0
0.8 ± 0.6 - Data available
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