exoclock

HD108236e (HIGH)

Discovered by: Daylan et al. 2021

The Star
Simbad
GAIA
2MASS		 HD 108236
DR2 6125644402384918784
J12261789-5121462
RA 12:26:17.8916 DEC -51:21:46.214
Parallax
15.452 mas		 P.M. RA
-70.434 mas/y		 P.M. DEC
-49.865 mas/y
MagV
9.24		 MagR*
8.865		 MagI*
8.524		 MagJ
8.046		 MagH
7.703		 MagK
7.637
MagG
9.087		 MagGBP
9.436		 MagGRP
8.606
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2458978.36999 ± 0.00074 BJDTDB
Period
19.590239 ± 7.4e-05 days
Transit Parameters
Daylan et al. 2021
Rp/Rs
0.0323 ± 0.0012		 a/Rs
33.9 +1.0 -1.1
 i
89.32 +0.42 -0.3 deg
e
0.2 +0.3 -0.13
 ω
170.0 +150.0 -130.0 deg
DepthR*
1.34 mmag		 Duration*
4.02 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Daylan et al. 2021
Teff
5730.0 +50.0 -50.0 K
 Log(g)
4.5 +0.5 -0.5 cm/s2
 Fe/H
-0.3 +0.5 -0.5 dex
ExoClock Status
Observing Priority HIGH
Minimum aperture 25.77"
Total Observations (Recent) 7 (0)
O-C -
ExoClock Observations (Recent) 0 (0)
Space Observations (Recent) 4 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 3 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.03197 ± 0.00063

HD108236e


Space Observations
Planet
Observation Date		 Mission O-C
minutes
HD108236e (HIGH)
2021-04-26		TESS2.46 ± 2.45
HD108236e (HIGH)
2021-04-06		TESS2.8 ± 1.87
HD108236e (HIGH)
2019-05-02		TESS9.15 ± 2.59
HD108236e (HIGH)
2019-04-13		TESS0.85 ± 2.59

Literature Mid-times
Planet
Observation Date		 Reference O-C
minutes
2020-05-28 Hoyer et al. 2022 -0.33 ± 1.15
2020-03-30 Bonfanti et al. 2021 4.45 ± 5.33
2020-03-11 Hoyer et al. 2022 -1.98 ± 0.86
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