| The Star | |||||
|---|---|---|---|---|---|
| Simbad GAIA 2MASS |
WASP-81 DR2 4244243354278985472 J20164989+0317385 |
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| RA | 20:16:49.8900 | DEC | +03:17:38.454 | ||
| Parallax 2.482 mas |
P.M. RA 27.196 mas/y |
P.M. DEC -15.319 mas/y |
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| MagV 12.47 |
MagR 12.37 |
MagI 11.7 |
MagJ 11.263 |
MagH 10.913 |
MagK 10.892 |
| MagG 12.333 |
MagGBP 12.679 |
MagGRP 11.832 |
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| *Calculated from GAIA magnitudes. | |||||
Ephemeris
- Verified 
|
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|---|---|---|---|---|---|
| Kokori et al. 2022 | |||||
| Mid-time 2457705.94057 ± 0.00023 BJDTDB |
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| Period 2.71648416 ± 4e-07 days |
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| Transit Parameters | |||||
| Triaud et al. 2017 | |||||
| Rp/Rs 0.112 ± 0.0012 |
a/Rs 6.56 +0.13 -0.16 |
i 88.7 +0.9 -0.9 deg |
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| e - |
ω - deg |
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| DepthR* 16.66 mmag |
Duration* 3.5 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 | |||||
| Triaud et al. 2017 | |||||
| Teff 5870.0 +120.0 -120.0 K |
Log(g) 4.26 +0.02 -0.03 cm/s2 |
Fe/H -0.36 +0.14 -0.14 dex |
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| ExoClock Status | |||||
|---|---|---|---|---|---|
| Observing Priority | LOW | ||||
| Minimum aperture | 6.41" | ||||
| Total Observations (Recent) | 27 (4) | ||||
| O-C | -0.52 ± 0.91 minutes | ||||
| ExoClock Observations (Recent) | 26 (4) | ||||
| Space Observations (Recent) | 0 (0) | ||||
| ETD Observations (Recent) | 0 (0) | ||||
| Literature Mid-times (Recent) | 1 (0) | ||||
| Kepler Rp/Rs | - | ||||
| TESS Rp/Rs | - | ||||
ExoClock Observations |
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| Planet Observation Date |
Observer Observatory |
Telescope Camera / Filter / Exp [s] |
O-C minutes |
|
|---|---|---|---|---|
| WASP-81b (LOW) 2024-08-24 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 90.0 | -2.74 ± 5.62 | |
| WASP-81b (LOW) 2024-07-25 | Ian Sharp PixelSkies | Celestron C11 Edge HD Starlight Xpress Trius Pro SX694 / R / 90.0 | 4.5 ± 3.02 | |
| WASP-81b (LOW) 2024-07-25 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 180.0 | -0.68 ± 2.16 | |
| WASP-81b (LOW) 2024-06-17 | Zlatko Orbanić Explorer | Newton Truss 254mm F/3.8 Atik 414 Ex Mono / rpr / 50.0 | 1.44 ± 3.31 | |
| WASP-81b (LOW) 2023-08-26 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Lum / 60.0 | -1.04 ± 3.02 | |
| WASP-81b (LOW) 2023-08-16 | Adrian Jones Private Observatory (I64) | Meade ACF 30cm QSI 583 / R / 150.0 | -2.29 ± 2.02 | |
| WASP-81b (LOW) 2023-07-27 | Giovanni Calapai Home Astronomical Observatory | Celestron 11 Schmidt-Cassegrain Atik 314L+ / Clear / 100.0 | -0.86 ± 1.58 | |
| WASP-81b (LOW) 2022-08-16 | David Arnot OSO PIRATE | PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 55.0 | -3.18 ± 1.44 | |
| WASP-81b (LOW) 2022-08-06 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 1.19 ± 2.74 | |
| WASP-81b (LOW) 2022-07-12 | Chiahui Wang NTNU ES Observatory | RCOS 16" w/CCDT67 f/5.4 Atik One 6 / R / 30.0 | -3.19 ± 3.17 | |
| WASP-81b (LOW) 2022-07-09 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Lum / 180.0 | 1.25 ± 1.73 | |
| WASP-81b (LOW) 2022-06-29 | David Arnot OSO PIRATE | PlaneWave Instruments CDK24 24 inch (610 mm) f/6.5 Corrected Dall-Kirkham Astrograph FLI ProLine KAF-16803 / R / 50.0 | 4.18 ± 0.76 | |
| WASP-81b (LOW) 2021-07-29 | Adam Popowicz Observatory Pyskowice | RC12" GSO ASI ZWO 1600 MM / ATIK 11000M / R / 120.0 | 2.24 ± 1.87 | |
| WASP-81b (LOW) 2021-07-29 | Dim Stouraitis Galilaios | SCT SXVF-H9 Starlight-Xpress / R / 60.0 | -0.21 ± 2.74 | |
| WASP-81b (LOW) 2021-07-29 | Carmelo Falco GALHassin Robotic Telescope 2 (GRT2) | Giacometti-Fogale RC16 Andor Apogee Aspen CG16M / gpr / 90.0 | -0.78 ± 2.59 | |
| WASP-81b (LOW) 2021-07-29 | Carmelo Falco GAL Hassin Robotic Telescope 2 (GRT2) - Multiband | Giacometti-Fogale RC16 - 2 Andor Apogee Aspen CG16M / R / 90.0 | -3.95 ± 1.58 | |
| WASP-81b (LOW) 2021-07-29 | Paolo Arcangelo Matassa P:M.P.H.R. Deep Sky (K81) | Ritchey Chretien 40cm-F5.3 CCD ICX453AQ / Clear / 120.0 | -7.26 ± 4.32 | |
| WASP-81b (LOW) 2021-07-27 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / Lum / 120.0 | 1.64 ± 1.01 | |
| WASP-81b (LOW) 2021-07-10 | Adam Popowicz Observatory Pyskowice | RC12" GSO ASI ZWO 1600 MM / ATIK 11000M / R / 119.0 | -4.69 ± 2.74 | |
| WASP-81b (LOW) 2021-07-08 | Anaël Wünsche El Sauce Observatory | CDK Planewave Chili Moravian G4 16k / Lum / 120.0 | 0.91 ± 0.58 | |
| WASP-81b (LOW) 2021-06-27 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | 1.68 ± 1.58 | |
| WASP-81b (LOW) 2020-08-08 | Phil Evans El Sauce | Planewave CDK14 SBIG STT 1603-3 / R / 120.0 | 0.26 ± 1.3 | |
| WASP-81b (LOW) 2020-08-08 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -2.04 ± 1.01 | |
| WASP-81b (LOW) 2020-07-28 | Yves Jongen Deep Sky Chile | Plane Wave CDK 17" Moravian 4G / R / 120.0 | -0.55 ± 1.15 | |
| WASP-81b (LOW) 2020-07-11 | Yves Jongen Rasteau Observatory | Plane Wave CDK 17" SBIG STXL 11002 / Clear / 120.0 | -0.83 ± 1.15 | |
| WASP-81b (LOW) 2020-07-11 | Danilo Sedita Osservatorio Sedita Castrofilippo | RC GSO 14" Moravian G2-1600 / R / 60.0 | -1.98 ± 1.87 | |
Literature Mid-times |
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| Planet Observation Date |
Reference | O-C minutes |
||
| 2012-09-25 | Triaud et al. 2017 | 0.03 ± 0.33 | ||