exoclock

KELT-2Ab (HIGH)

Discovered by: Beatty et al. 2012

The Star
Simbad
GAIA
2MASS
HD 42176
DR2 3438059369839738624
J06103935+3057258
RA 06:10:39.3452 DEC +30:57:25.717
Parallax
7.431 mas
P.M. RA
16.74 mas/y
P.M. DEC
-2.405 mas/y
MagV
8.71
MagR*
8.388
MagI*
8.12
MagJ
7.669
MagH
7.417
MagK
7.346
MagG
8.584
MagGBP
8.861
MagGRP
8.178
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2459467.198989 ± 8e-05 BJDTDB
Period
4.11377556 ± 8.3e-07 days

Transit Parameters
Beatty et al. 2012
Rp/Rs
0.0722 ± 0.0018
a/Rs**
6.59 +0.08 -0.08
i
88.6 +1.0 -1.4 deg
e
-
ω
- deg
DepthR*
6.86 mmag
Duration*
5.08 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Beatty et al. 2012
Teff
6148.0 +48.0 -48.0 K
Log(g)
4.03 +0.03 -0.03 cm/s2
Fe/H
0.03 +0.08 -0.08 dex
ExoClock Status
Observing Priority HIGH
Minimum aperture 5.0"
Total Observations (Recent) 19 (1)
O-C -0.12 ± 7.49 minutes
ExoClock Observations (Recent) 3 (1)
Space Observations (Recent) 15 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs -
TESS Rp/Rs 0.06708 ± 0.00012

KELT-2Ab


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
KELT-2Ab (HIGH)
2024-02-02
Claudio Lopresti
Claudio Lopresti
Meade LX200 12"
CCD Sbig ST9xe / I / 90.0
-0.12 ± 7.49
KELT-2Ab (HIGH)
2021-11-30
Alessandro Marchini
Astronomical Observatory University of Siena
Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 90.0
1.44 ± 2.59
KELT-2Ab (HIGH)
2021-11-18
Taewoo Kim
Deokheung Optical Astronomy Observatory
NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / B / 30.0
1.05 ± 1.58

Space Observations

Planet
Observation Date
Mission O-C
minutes
KELT-2Ab (HIGH)
2021-11-30
TESS0.11 ± 0.6
KELT-2Ab (HIGH)
2021-11-26
TESS-0.08 ± 0.58
KELT-2Ab (HIGH)
2021-11-22
TESS0.12 ± 0.5
KELT-2Ab (HIGH)
2021-11-18
TESS-0.75 ± 0.63
KELT-2Ab (HIGH)
2021-11-14
TESS0.94 ± 0.52
KELT-2Ab (HIGH)
2021-11-10
TESS-0.06 ± 0.6
KELT-2Ab (HIGH)
2021-11-02
TESS0.17 ± 0.58
KELT-2Ab (HIGH)
2021-10-20
TESS0.05 ± 0.46
KELT-2Ab (HIGH)
2021-10-16
TESS-0.24 ± 0.49
KELT-2Ab (HIGH)
2021-10-08
TESS-0.77 ± 0.53
KELT-2Ab (HIGH)
2021-10-04
TESS0.76 ± 0.53
KELT-2Ab (HIGH)
2021-09-30
TESS0.05 ± 0.53
KELT-2Ab (HIGH)
2021-09-26
TESS-0.06 ± 0.48
KELT-2Ab (HIGH)
2021-09-22
TESS0.08 ± 0.48
KELT-2Ab (HIGH)
2021-09-17
TESS-0.72 ± 0.52

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2012-02-17 Beatty et al. 2012 0.1 ± 1.22
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