| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
WASP-55 DR2 3603529272750802560 J13350194-1730124 |
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| RA | 13:35:01.9537 | DEC | -17:30:12.526 | ||
| Parallax 3.334 mas |
P.M. RA 12.072 mas/y |
P.M. DEC -3.837 mas/y |
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| MagV 11.75 |
MagR* 11.555 |
MagI* 11.048 |
MagJ 10.775 |
MagH 10.443 |
MagK 10.396 |
| MagG 11.775 |
MagGBP 12.106 |
MagGRP 11.292 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
|||||
|---|---|---|---|---|---|
| Kokori et al. 2025 | |||||
| Mid-time 2457381.2917 ± 0.0001 BJDTDB |
|||||
| Period 4.46562934 ± 4.6e-07 days |
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| Transit Parameters | |||||
| Southworth et al. 2016 | |||||
| Rp/Rs 0.1246 ± 0.0007 |
a/Rs** 10.66 +0.07 -0.09 |
i 89.0 +0.6 -0.6 deg |
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| e - |
ω - deg |
||||
| DepthR* 20.5 mmag |
Duration* 3.56 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 | |||||
| Hellier et al. 2012 | |||||
| Teff 5960.0 +100.0 -100.0 K |
Log(g) 4.39 +0.03 -0.03 cm/s2 |
Fe/H -0.2 +0.08 -0.08 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 5.02" | ||||
| Total Observations (Recent) | 32 (3) | ||||
| O-C | 0.43 ± 0.61 minutes | ||||
| ExoClock Observations (Recent) | 13 (3) | ||||
| Space Observations (Recent) | 9 (0) | ||||
| ETD Observations (Recent) | 1 (0) | ||||
| Literature Mid-times (Recent) | 9 (0) | ||||
| Kepler Rp/Rs | 0.12359 ± 0.00023 | ||||
| TESS Rp/Rs | 0.12374 ± 0.00053 | ||||
ExoClock Observations |
||||
| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| WASP-55b (LOW) 2025-04-05 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -0.39 ± 0.76 | |
| WASP-55b (LOW) 2025-03-18 | Darryl Madison Ajijic Observatory | Celestron CPC 800 Edge HD ZWO2400MC / Clear / 60.0 | -0.22 ± 1.73 | |
| WASP-55b (LOW) 2025-03-09 | Bryan Martin Tiger Butte Observatory Remote | AG Optical IDK ZWO ASI 294 / R / 180.0 | 6.06 ± 3.46 | |
| WASP-55b (LOW) 2024-04-04 | Deborah Smith Complejo Astronomico Los Coloraos, Gorafe | Celestron C11 QHY9 / Clear / 120.0 | 5.24 ± 2.88 | |
| WASP-55b (LOW) 2024-04-04 | Adam Popowicz Otivar dome2 | Newton 12" ASA ASI ZWO 1600MM / R / 65.0 | 3.08 ± 2.88 | |
| WASP-55b (LOW) 2024-04-04 | Giovanni Calapai Home Astronomical Observatory | Celestron 11 Schmidt-Cassegrain Atik 314L+ / Clear / 90.0 | 1.21 ± 1.73 | |
| WASP-55b (LOW) 2023-04-26 | Anaël Wünsche El Sauce Observatory | CDK Planewave Chili Moravian G4 16k / Lum / 120.0 | 1.36 ± 0.68 | |
| WASP-55b (LOW) 2023-04-26 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 60.0 | -0.86 ± 0.53 | |
| WASP-55b (LOW) 2023-04-17 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 60.0 | -5.06 ± 1.25 | |
| WASP-55b (LOW) 2022-03-11 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -4.04 ± 1.3 | |
| WASP-55b (LOW) 2020-04-18 | Phil Evans El Sauce | Planewave CDK14 SBIG STT 1603-3 / R / 60.0 | 2.51 ± 1.15 | |
| WASP-55b (LOW) 2020-04-13 | Mike Miller Sliding Spring | 12 inch f9 Reflector Apogee Alta U16 / Lum / 160.0 | 1.11 ± 5.76 | |
| WASP-55b (LOW) 2018-04-30 | Anastasia Kokori El Sauce Observatory | Planewave CDK24 FLI ProLine PL9000 / rpr / 60.0 | 0.96 ± 1.73 | |
Space Observations |
||||
| Planet Observation Date |
Mission | O-C minutes |
||
| WASP-55b (LOW) 2021-04-23 | TESS | 0.05 ± 0.65 | ||
| WASP-55b (LOW) 2021-04-10 | TESS | 0.27 ± 0.82 | ||
| WASP-55b (LOW) 2021-04-05 | TESS | 1.91 ± 0.68 | ||
| WASP-55b (LOW) 2019-04-17 | TESS | -0.88 ± 0.71 | ||
| WASP-55b (LOW) 2019-04-04 | TESS | 0.05 ± 0.72 | ||
| WASP-55b (LOW) 2019-03-31 | TESS | 0.01 ± 0.72 | ||
| WASP-55b (LOW) 2015-09-26 | K2 | 4.01 ± 4.61 | ||
| WASP-55b (LOW) 2015-08-17 | K2 | 0.25 ± 0.17 | ||
| WASP-55b (LOW) 2015-07-30 | K2 | -0.09 ± 0.23 | ||
ETD Observations |
||||
| Planet Observation Date |
Observer(s) | ETD link | O-C minutes |
|
| WASP-55b (LOW) 2014-04-30 | František Lomoz | 1398919697 | 1.53 ± 2.59 | |
Literature Mid-times |
||||
| Planet Observation Date |
Reference | O-C minutes |
||
| 2015-04-23 | Southworth et al. 2016 | -0.1 ± 0.27 | ||
| 2014-06-19 | Southworth et al. 2016 | -0.16 ± 0.33 | ||
| 2013-05-04 | Southworth et al. 2016 | -0.41 ± 0.23 | ||
| 2011-06-03 | Southworth et al. 2016 | 1.17 ± 0.66 | ||
| 2010-04-22 | Southworth et al. 2016 | 2.76 ± 2.45 | ||
| 2009-04-30 | Southworth et al. 2016 | -5.96 ± 3.02 | ||
| 2008-04-24 | Southworth et al. 2016 | -1.59 ± 3.17 | ||
| 2007-04-11 | Southworth et al. 2016 | 0.99 ± 4.03 | ||
| 2006-06-16 | Southworth et al. 2016 | -1.22 ± 4.9 | ||