exoclock

GJ1252b (HIGH)

Discovered by: Shporer et al. 2020

The Star
Simbad
GAIA
2MASS		 L 210-70
DR2 6468968316900356736
J20274210-5627262
RA 20:27:42.0813 DEC -56:27:25.156
Parallax
49.056 mas		 P.M. RA
424.414 mas/y		 P.M. DEC
-1230.623 mas/y
MagV
12.68		 MagR
11.83		 MagI*
10.489		 MagJ
8.697		 MagH
8.161		 MagK
7.915
MagG
11.236		 MagGBP
12.481		 MagGRP
10.161
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2459487.95566 ± 0.00053 BJDTDB
Period
0.51824231 ± 4.4e-07 days
Transit Parameters
Shporer et al. 2020
Rp/Rs
0.02802 ± 0.0009		 a/Rs
5.05 +0.42 -0.42
 i
85.0 +2.1 -1.8 deg
e
-		 ω
- deg
DepthR*
1.0 mmag		 Duration*
0.74 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Shporer et al. 2020
Teff
3458.0 +140.0 -133.0 K
 Log(g)
4.835 +0.068 -0.067 cm/s2
 Fe/H
0.1 +0.1 -0.1 dex
ExoClock Status
Observing Priority HIGH
Minimum aperture 103.41"
Total Observations (Recent) 11 (0)
O-C -
ExoClock Observations (Recent) 0 (0)
Space Observations (Recent) 11 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 0 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.0394 ± 0.0015

GJ1252b


Space Observations
Planet
Observation Date		 Mission O-C
minutes
GJ1252b (HIGH)
2023-07-17		TESS0.35 ± 1.32
GJ1252b (HIGH)
2023-07-16		TESS-0.8 ± 1.34
GJ1252b (HIGH)
2023-07-08		TESS-1.76 ± 2.02
GJ1252b (HIGH)
2023-07-04		TESS1.96 ± 2.3
GJ1252b (HIGH)
2020-07-28		TESS-4.42 ± 2.88
GJ1252b (HIGH)
2020-07-28		TESS3.27 ± 1.44
GJ1252b (HIGH)
2020-07-27		TESS1.09 ± 2.74
GJ1252b (HIGH)
2020-07-23		TESS-1.59 ± 1.73
GJ1252b (HIGH)
2020-07-15		TESS1.57 ± 2.45
GJ1252b (HIGH)
2019-07-02		TESS-6.77 ± 2.3
GJ1252b (HIGH)
2019-06-28		TESS1.58 ± 1.58
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