exoclock

NGTS-13b (HIGH)

Discovered by: Grieves et al. 2021

The Star
Simbad
GAIA
2MASS
2MASS J11445767-3808229
DR2 5385076140853434752
J11445767-3808229
RA 11:44:57.6835 DEC -38:08:22.961
Parallax
1.516 mas
P.M. RA
-21.126 mas/y
P.M. DEC
-0.988 mas/y
MagV
12.744
MagR*
12.341
MagI*
11.993
MagJ
11.481
MagH
11.244
MagK
11.141
MagG
12.569
MagGBP
12.93
MagGRP
12.06
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459643.78617 ± 0.00097 BJDTDB
Period
4.1190828 ± 6.6e-06 days

Transit Parameters
Grieves et al. 2021
Rp/Rs
0.0656 ± 0.003
a/Rs
6.6 +0.18 -0.3
i
88.7 +1.2 -1.2 deg
e
0.086 +0.034 -0.034
ω
213.6 +24.2 -24.2 deg
DepthR*
5.71 mmag
Duration*
5.28 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Grieves et al. 2021
Teff
5819.0 +73.0 -73.0 K
Log(g)
4.04 +0.05 -0.05 cm/s2
Fe/H
0.25 +0.17 -0.17 dex
ExoClock Status
Observing Priority HIGH
Minimum aperture 12.95"
Total Observations (Recent) 11 (0)
O-C -2.06 ± 2.5 minutes
ExoClock Observations (Recent) 4 (0)
Space Observations (Recent) 6 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.0644 ± 0.0014

NGTS-13b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
NGTS-13b (HIGH)
2025-02-08
Francois Regembal
HRT Deep Sky Chile
Astrosib RC360
Moravian C3 PRO 61000 / Lum / 135.0
-2.73 ± 4.61
NGTS-13b (HIGH)
2024-05-04
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 180.0
15.6 ± 6.19
NGTS-13b (HIGH)
2024-05-04
Anaël Wünsche
El Sauce Observatory
CDK Planewave Chili
Moravian G4 16k / Lum / 120.0
-0.67 ± 6.34
NGTS-13b (HIGH)
2024-05-04
Jean-Pascal Vignes
Deep Sky Chile
PlaneWave CDK 17"
QHYCCD 600 M / V / 60.0
-9.6 ± 4.03

Space Observations

Planet
Observation Date
Mission O-C
minutes
NGTS-13b (HIGH)
2023-04-04
TESS-2.91 ± 5.76
NGTS-13b (HIGH)
2023-03-31
TESS0.38 ± 3.74
NGTS-13b (HIGH)
2023-03-27
TESS7.56 ± 4.03
NGTS-13b (HIGH)
2023-03-23
TESS-10.18 ± 5.33
NGTS-13b (HIGH)
2023-03-19
TESS-1.28 ± 2.74
NGTS-13b (HIGH)
2023-03-15
TESS1.72 ± 3.46

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2019-03-30 Grieves et al. 2021 0.08 ± 2.59
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