exoclock

KELT-2Ab

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 - Not verified False
Beatty et al. 2012
Mid-time
2455974.6034 ± 0.0008 BJDTDB
Period
4.113791 ± 1e-05 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 to produce a duration that matches the 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
ExoClock Observations (Recent)
Space Observations
Literature Mid-times
ETD Observations
O-C minutes 		ALERT
3 (3)

0

-19.1±1.2

KELT-2Ab


ExoClock Observations

Observation
Date		 Observer
Observatory		 Telescope
Camera / Filter / Exp [s]		 O-C
minutes
2022-02-08 Claudio Lopresti
Claudio Lopresti		 Mak-Newton
CCD Sbig ST10xme / I / 120.0		 -24.7 ± 3.0
2021-11-30 Alessandro Marchini
Astronomical Observatory, University of Siena		 Mak-Cas 0.3m f/5.6
Sbig STL-6303 / R / 90.0		 -17.7 ± 2.6
2021-11-18 Taewoo Kim
Deokheung Optical Astronomy Observatory		 NYSC 1m Telescope
FLI PL-16803 or PI SOPHIA-2048B / B / 30.0		 -18.0 ± 1.6
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