| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
HD 42176 DR2 3438059369839738624 J06103935+3057258 |
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| 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 |
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| 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 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2022 | |||||
| Mid-time 2459467.198989 ± 8e-05 BJDTDB |
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| Period 4.11377556 ± 8.3e-07 days |
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| 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 |
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| e - |
ω - deg |
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| DepthR* 6.86 mmag |
Duration* 5.08 hours |
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|
*Calculated from the other parameters, using PyLightcurve.
**Adjusted based on the space observations. |
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| 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 |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | MEDIUM | ||||
| Minimum aperture | 5.0" | ||||
| Total Observations (Recent) | 19 (0) | ||||
| O-C | 0.06 ± 0.18 minutes | ||||
| ExoClock Observations (Recent) | 3 (0) | ||||
| 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 | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| KELT-2Ab (MEDIUM) 2022-02-08 | Claudio Lopresti Claudio Lopresti | Mak-Newton CCD Sbig ST10xme / I / 120.0 | -5.16 ± 3.02 | |
| KELT-2Ab (MEDIUM) 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 (MEDIUM) 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 |
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| Planet Observation Date |
Mission | O-C minutes |
||
| KELT-2Ab (MEDIUM) 2021-11-30 | TESS | 0.11 ± 0.6 | ||
| KELT-2Ab (MEDIUM) 2021-11-26 | TESS | -0.08 ± 0.58 | ||
| KELT-2Ab (MEDIUM) 2021-11-22 | TESS | 0.12 ± 0.5 | ||
| KELT-2Ab (MEDIUM) 2021-11-18 | TESS | -0.75 ± 0.63 | ||
| KELT-2Ab (MEDIUM) 2021-11-14 | TESS | 0.94 ± 0.52 | ||
| KELT-2Ab (MEDIUM) 2021-11-10 | TESS | -0.06 ± 0.6 | ||
| KELT-2Ab (MEDIUM) 2021-11-02 | TESS | 0.17 ± 0.58 | ||
| KELT-2Ab (MEDIUM) 2021-10-20 | TESS | 0.05 ± 0.46 | ||
| KELT-2Ab (MEDIUM) 2021-10-16 | TESS | -0.24 ± 0.49 | ||
| KELT-2Ab (MEDIUM) 2021-10-08 | TESS | -0.77 ± 0.53 | ||
| KELT-2Ab (MEDIUM) 2021-10-04 | TESS | 0.76 ± 0.53 | ||
| KELT-2Ab (MEDIUM) 2021-09-30 | TESS | 0.05 ± 0.53 | ||
| KELT-2Ab (MEDIUM) 2021-09-26 | TESS | -0.06 ± 0.48 | ||
| KELT-2Ab (MEDIUM) 2021-09-22 | TESS | 0.08 ± 0.48 | ||
| KELT-2Ab (MEDIUM) 2021-09-17 | TESS | -0.72 ± 0.52 | ||
Literature Mid-times |
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| Planet Observation Date |
Reference | O-C minutes |
||
| 2012-02-17 | Beatty et al. 2012 | 0.1 ± 1.22 | ||