exoclock

K2-31b (LOW)

Discovered by: Grziwa et al. 2016

The Star
Simbad
GAIA
2MASS
CD-23 12854
DR2 6050191241556876672
J16214578-2332520
RA 16:21:45.7780 DEC -23:32:52.289
Parallax
9.019 mas
P.M. RA
-40.23 mas/y
P.M. DEC
-96.332 mas/y
MagV
10.8
MagR*
10.292
MagI*
9.941
MagJ
9.318
MagH
8.942
MagK
8.866
MagG
10.537
MagGBP
10.967
MagGRP
9.974
*Calculated from GAIA magnitudes.

Ephemeris - Verified True
Kokori et al. 2022
Mid-time
2456952.717941 ± 9.1e-05 BJDTDB
Period
1.25784887 ± 7.8e-07 days

Transit Parameters
Grziwa et al. 2016
Rp/Rs
0.14 ± 0.04
a/Rs**
5.642 +0.007 -0.007
i
79.9 +0.8 -0.8 deg
e
-
ω
- deg
DepthR*
8.26 mmag
Duration*
0.98 hours
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations.

Limb Darkening Parameters
Grziwa et al. 2016
Teff
5280.0 +70.0 -70.0 K
Log(g)
4.6 +0.07 -0.07 cm/s2
Fe/H
0.08 +0.05 -0.05 dex
ExoClock Status
Observing Priority LOW
Minimum aperture 7.7"
Total Observations (Recent) 13 (3)
O-C 1.7 ± 0.63 minutes
ExoClock Observations (Recent) 5 (3)
Space Observations (Recent) 7 (0)
ETD Observations (Recent) 0 (0)
Literature Mid-times (Recent) 1 (0)
Kepler Rp/Rs 0.13659 ± 0.00029
TESS Rp/Rs -

K2-31b


ExoClock Observations

Planet
Observation Date
Observer
Observatory
Telescope
Camera / Filter / Exp [s]
O-C
minutes
K2-31b (LOW)
2022-05-05
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 60.0
3.36 ± 1.58
K2-31b (LOW)
2022-04-25
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 60.0
0.18 ± 0.86
K2-31b (LOW)
2022-03-12
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 60.0
7.1 ± 1.73
K2-31b (LOW)
2021-10-01
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 60.0
1.35 ± 1.87
K2-31b (LOW)
2021-09-26
Yves Jongen
Deep Sky Chile
Plane Wave CDK 17"
Moravian 4G / R / 40.0
-0.39 ± 2.59

Space Observations

Planet
Observation Date
Mission O-C
minutes
K2-31b (LOW)
2014-11-05
K2-0.55 ± 2.74
K2-31b (LOW)
2014-10-31
K20.36 ± 0.22
K2-31b (LOW)
2014-10-13
K2-0.43 ± 0.32
K2-31b (LOW)
2014-10-04
K20.02 ± 0.14
K2-31b (LOW)
2014-09-25
K2-1.36 ± 0.36
K2-31b (LOW)
2014-09-24
K20.31 ± 0.16
K2-31b (LOW)
2014-08-26
K2-0.22 ± 0.23

Literature Mid-times

Planet
Observation Date
Reference O-C
minutes
2015-06-18 Grziwa et al. 2016 -0.48 ± 0.35
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