exoclock
exoclock
WASP-21b
Discovered by: Bouchy et al. 2010
The Star
Simbad
GAIA
2MASS
WASP-21
DR2 2831084391023184128
J23095825+1823459
RA 23:09:58.2534 DEC +18:23:45.882
Parallax
3.841 mas
P.M. RA
17.597 mas/y
P.M. DEC
18.867 mas/y
MagV
11.55
MagR
11.52
MagI*
10.832
MagJ
10.35
MagH
10.085
MagK
9.982
MagG
11.399
MagGBP
11.744
MagGRP
10.912
* calculated from GAIA magnitudes

Ephemeris - Not verified False
Seeliger et al. 2015
Mid-time
2454743.0422 ± 0.0006 BJDTDB
Period
4.3225126 ± 2.2e-06 days

Transit Parameters
Bouchy et al. 2010
Rp/Rs
0.104 ± 0.0018
a/Rs
10.54 +0.15 -0.15
i
88.8 +0.8 -0.7 deg
e
-
ω
- deg
DepthR*
14.28 mmag
Duration*
3.4 hours
* calculated from the other parameters, using PyLightcurve

Limb Darkening Parameters
Bouchy et al. 2010
Teff
5800.0 +100.0 -100.0 K
Log(g)
4.2 +0.1 -0.1 cm/s2
Fe/H
-0.46 +0.11 -0.11 dex
ExoClock Status
Observing Priority
Total Observations (Recent)
O-C minutes
Total Literature Mid-times
LOW
4 (0)
-7.8±0.8
0
WASP-21b


ExoClock Observations
Observation
Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
2020-10-07 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
-9.8 ± 1.2
2020-08-29 Nikolaos Paschalis
Nunki Observatory
Officina Stellare RILA 400
SBIG STXL 11002 / R / 60.0
-6.7 ± 1.7
2020-08-16 Francois Regembal
HRTobs
Astrosib RC360
SBIG STX 16803 / Lum / 120.0
-11.7 ± 2.3
2016-10-20 Anaël Wünsche
Observatoire des Baronnies Provençales
CDK Planewave
SBIG STL11K / Clear / 120.0
-3.4 ± 1.6 - Data available
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