exoclock
The Star
Simbad
GAIA
2MASS
GSC 00086-00341
DR2 3279418602369232000
J04355384+0225526
RA 04:35:53.8468 DEC +02:25:52.643
Parallax
1.505 mas
P.M. RA
7.784 mas/y
P.M. DEC
-3.863 mas/y
MagV
12.855
MagR*
12.39
MagI*
12.086
MagJ
11.485
MagH
11.225
MagK
11.123
MagG
12.622
MagGBP
12.986
MagGRP
12.095
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2025
Mid-time
2458633.05455 ± 0.00059 BJDTDB
Period
4.0072318 ± 2.6e-06 days

Transit Parameters
Bakos et al. 2021
Rp/Rs
0.1007 ± 0.0034
a/Rs
6.67 +0.12 -0.12
i
88.01 +0.7 -0.7 deg
e
-
ω
- deg
DepthR*
13.19 mmag
Duration*
4.96 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Bakos et al. 2021
Teff
6457.0 +29.0 -29.0 K
Log(g)
4.07 +0.01 -0.01 cm/s2
Fe/H
-0.113 +0.027 -0.056 dex
ExoClock Status
Observing Priority MEDIUM
Minimum aperture 6.45"
Total Observations (Recent) 10 (1)
O-C 1.87 ± 0.84 minutes
ExoClock Observations (Recent) 9 (1)
Space Observations (Recent) 0 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs -

HAT-P-64b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
HAT-P-64b (MEDIUM)
2026-01-12
Giovanni Calapai
Home Astronomical Observatory
Celestron 11 Schmidt-Cassegrain
Atik 314L+ / AstrodonExoPlanet-BB / 90.0
0.93 ± 2.59
HAT-P-64b (MEDIUM)
2025-01-05
Bryan Martin
Tiger Butte Observatory Remote
AG Optical IDK
ZWO ASI 294 / R / 180.0
-2.02 ± 7.92
HAT-P-64b (MEDIUM)
2024-11-30
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
-0.16 ± 2.45
HAT-P-64b (MEDIUM)
2024-11-26
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
2.62 ± 1.58
HAT-P-64b (MEDIUM)
2024-11-18
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 180.0
2.22 ± 1.2
HAT-P-64b (MEDIUM)
2022-12-29
Adam Popowicz
Otivar dome2
Newton 12" ASA
ASI ZWO 1600MM / R / 90.0
2.67 ± 3.17
HAT-P-64b (MEDIUM)
2022-12-17
Matthieu Bachschmidt
Gonachon
Celestron C11
SBIG ST8XME / AstrodonExoPlanet-BB / 120.0
-2.81 ± 2.45
HAT-P-64b (MEDIUM)
2021-11-24
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / Lum / 120.0
3.21 ± 1.58
HAT-P-64b (MEDIUM)
2021-11-24
Anaël Wünsche
El Sauce Observatory
CDK Planewave Chili
Moravian G4 16k / Lum / 120.0
-2.55 ± 1.58

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2016-12-28 Bakos et al. 2021 -0.02 ± 0.91
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