exoclock

WASP-121b (LOW)

Discovered by: Delrez et al. 2016

The Star
Simbad
GAIA
2MASS
CD-38 3220
DR2 5565050255701441664
J07102406-3905506
RA 07:10:24.0606 DEC -39:05:50.570
Parallax
3.676 mas
P.M. RA
-3.848 mas/y
P.M. DEC
25.606 mas/y
MagV
10.51
MagR*
10.195
MagI*
9.984
MagJ
9.625
MagH
9.439
MagK
9.374
MagG
10.375
MagGBP
10.623
MagGRP
10.015
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2458661.563783 ± 3e-05 BJDTDB
Period
1.274924762 ± 4.6e-08 days

Transit Parameters
Delrez et al. 2016
Rp/Rs
0.1245 ± 0.0005
a/Rs
3.754 +0.023 -0.028
i
87.6 +0.6 -0.6 deg
e
-
ω
- deg
DepthR*
20.3 mmag
Duration*
2.94 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Delrez et al. 2016
Teff
6459.0 +140.0 -140.0 K
Log(g)
4.24 +0.01 -0.01 cm/s2
Fe/H
0.13 +0.09 -0.09 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 5.0"
Total Observations (Recent) 66 (3)
O-C 0.027 ± 0.055 minutes
ExoClock Observations (Recent) 8 (3)
Space Observations (Recent) 52 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 6 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.12045 ± 0.00011

WASP-121b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
WASP-121b (LOW)
2022-11-03
Jean-Pascal Vignes
Deep Sky Chile
Planewave CDK400
QHYCCD 600M / R / 45.0
0.27 ± 0.59
WASP-121b (LOW)
2022-02-02
Anaël Wünsche
El Sauce Observatory
CDK Planewave Chili
Moravian G4 16k / R / 120.0
2.51 ± 0.58
WASP-121b (LOW)
2022-01-24
Anaël Wünsche
El Sauce Observatory
CDK Planewave Chili
Moravian G4 16k / R / 120.0
-1.13 ± 0.72
WASP-121b (LOW)
2021-03-28
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 120.0
0.56 ± 0.58
WASP-121b (LOW)
2021-03-05
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 120.0
1.05 ± 0.58
WASP-121b (LOW)
2020-12-30
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 120.0
-0.15 ± 0.86
WASP-121b (LOW)
2020-12-07
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 60.0
-0.37 ± 0.72
WASP-121b (LOW)
2020-11-14
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 60.0
-0.16 ± 1.01

Space Observations

Planet
Observation Date
Mission O-C
minutes
WASP-121b (LOW)
2021-02-07
TESS0.5 ± 0.4
WASP-121b (LOW)
2021-02-06
TESS0.13 ± 0.36
WASP-121b (LOW)
2021-02-05
TESS-0.02 ± 0.39
WASP-121b (LOW)
2021-02-03
TESS0.02 ± 0.36
WASP-121b (LOW)
2021-02-02
TESS-0.44 ± 0.37
WASP-121b (LOW)
2021-02-01
TESS-0.04 ± 0.36
WASP-121b (LOW)
2021-01-30
TESS-0.14 ± 0.35
WASP-121b (LOW)
2021-01-29
TESS-0.33 ± 0.35
WASP-121b (LOW)
2021-01-28
TESS0.3 ± 0.37
WASP-121b (LOW)
2021-01-25
TESS0.14 ± 0.32
WASP-121b (LOW)
2021-01-24
TESS-0.72 ± 0.36
WASP-121b (LOW)
2021-01-23
TESS0.09 ± 0.33
WASP-121b (LOW)
2021-01-22
TESS-0.22 ± 0.32
WASP-121b (LOW)
2021-01-20
TESS-0.05 ± 0.35
WASP-121b (LOW)
2021-01-19
TESS-0.2 ± 0.32
WASP-121b (LOW)
2021-01-18
TESS0.11 ± 0.35
WASP-121b (LOW)
2021-01-16
TESS-0.23 ± 0.32
WASP-121b (LOW)
2021-01-15
TESS0.36 ± 0.33
WASP-121b (LOW)
2021-01-11
TESS-0.51 ± 0.35
WASP-121b (LOW)
2021-01-10
TESS0.02 ± 0.33
WASP-121b (LOW)
2021-01-09
TESS0.04 ± 0.33
WASP-121b (LOW)
2021-01-08
TESS0.09 ± 0.35
WASP-121b (LOW)
2021-01-06
TESS0.64 ± 0.37
WASP-121b (LOW)
2021-01-05
TESS-0.19 ± 0.35
WASP-121b (LOW)
2021-01-04
TESS0.15 ± 0.33
WASP-121b (LOW)
2021-01-02
TESS0.17 ± 0.32
WASP-121b (LOW)
2021-01-01
TESS0.61 ± 0.32
WASP-121b (LOW)
2020-12-30
TESS0.01 ± 0.32
WASP-121b (LOW)
2020-12-28
TESS0.04 ± 0.36
WASP-121b (LOW)
2020-12-27
TESS-0.21 ± 0.33
WASP-121b (LOW)
2020-12-26
TESS0.24 ± 0.36
WASP-121b (LOW)
2020-12-25
TESS-0.67 ± 0.35
WASP-121b (LOW)
2020-12-23
TESS0.55 ± 0.35
WASP-121b (LOW)
2020-12-22
TESS-0.31 ± 0.33
WASP-121b (LOW)
2020-12-21
TESS0.1 ± 0.33
WASP-121b (LOW)
2020-12-19
TESS0.49 ± 0.36
WASP-121b (LOW)
2020-12-18
TESS-0.44 ± 0.32
WASP-121b (LOW)
2019-01-31
TESS0.58 ± 0.39
WASP-121b (LOW)
2019-01-30
TESS-0.13 ± 0.35
WASP-121b (LOW)
2019-01-28
TESS-0.41 ± 0.36
WASP-121b (LOW)
2019-01-27
TESS0.1 ± 0.35
WASP-121b (LOW)
2019-01-26
TESS0.15 ± 0.36
WASP-121b (LOW)
2019-01-25
TESS0.46 ± 0.37
WASP-121b (LOW)
2019-01-23
TESS-0.73 ± 0.35
WASP-121b (LOW)
2019-01-22
TESS-0.15 ± 0.35
WASP-121b (LOW)
2019-01-18
TESS-0.24 ± 0.36
WASP-121b (LOW)
2019-01-16
TESS-0.2 ± 0.35
WASP-121b (LOW)
2019-01-14
TESS-0.39 ± 0.36
WASP-121b (LOW)
2019-01-13
TESS-0.33 ± 0.33
WASP-121b (LOW)
2019-01-12
TESS0.02 ± 0.33
WASP-121b (LOW)
2019-01-11
TESS0.52 ± 0.37
WASP-121b (LOW)
2019-01-08
TESS0.23 ± 0.35

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2018-01-01 Bourrier et al. 2020 -0.03 ± 0.24
2016-11-12 Evans et al. 2018 0.33 ± 0.26
2016-11-06 Evans et al. 2018 0.78 ± 0.32
2016-10-24 Evans et al. 2018 -0.36 ± 0.3
2016-02-06 Tsiaras et al. 2018 -0.12 ± 0.17
2013-12-09 Delrez et al. 2016 -0.01 ± 0.16
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