WASP-81 Overview

WASP-81 1.28 R_⦿ 5870.00 K

WASP-81 b

1.429 R_Jup

Overview Parameters Nearby Data Bibliography 8 Legend

Architecture: WASP-81; WASP-81

Discovery Data

Host	Planet	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
WASP-81	WASP-81 b	2.72 d	16.02 R_⨁	Transit	2017	Triaud et al. 2017	Confirmed Planet

WASP-81 Stellar Parameters (4 Solutions)

RA: 20h16m49.92s

Dec: +03d17m38.22s

Distance: 398.505+7.132-6.889
pc

Parallax: 2.4816300±0.0437948 mas

Ecliptic Latitude: 22.40408 deg

Ecliptic Longitude: 307.37581 deg

Galactic Latitude: -17.29285 deg

Galactic Longitude: 46.05986 deg

Total Proper Motion: 31.2138219±0.0710036 mas/yr

Proper Motion (RA): 27.1961000±0.0763997 mas/yr

Proper Motion (Dec): -15.3191000±0.0503451 mas/yr

Photometry: m_V
12.469±0.069; m_TESS
11.8886±0.0061; m_J
11.263±0.027; m_H
10.913±0.024; m_Ks
10.892±0.026; m_W1
10.803±0.023; m_W2
10.846±0.020; m_W3
10.872±0.118; m_W4
8.515; m_Gaia
12.332600±0.000162; m_B
13.137±0.067

Abundances (Hypatia Catalog): [Fe/H] -0.40±0.01 dex; [C/H] -0.16±0.06 dex; [Na/H] -0.49±0.04 dex; [Mg/H] -0.20±0.07 dex; [Al/H] -0.24±0.06 dex; [Si/H] -0.28±0.05 dex; [Ca/H] -0.26±0.06 dex; [BaII/H] -0.50±0.19 dex

Tools: Planetary Systems; ExoFOP Target Overview Page; IRSA Finding Chart; TOI; Stellar Hosts

Source	TICv8	Gaia DR2	Triaud et al. 2017	ExoFOP	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	5962.000+101.209-140.693	5790.3335+7.6665-14.8335	5870±120	5962.000±120.951
L_✶ (log₁₀(L_⦿))	0.20500152+0.02335756-0.02181117	0.14899396+0.01077992-0.01105429	0.246+0.047-0.047	---
Metallicity (dex)	---	---	-0.36±0.14 [Fe/H]	---
ρ_✶ (g/cm³)	0.92188680+0.23582730-0.15994900	---	0.723+0.042-0.052	---
M_✶ (M_⦿)	1.093000+0.137977-0.132375	---	1.080+0.059-0.058	---
R_✶ (R_⦿)	1.1867800+0.0612779-0.0522900	1.1796210+0.0060670-0.0031176	1.283+0.040-0.037	1.18677997589111±0.05678400000000
log g (log₁₀(cm/s²))	4.3279500+0.0936911-0.0596807	---	4.258+0.022-0.027	4.3279500±0.0766859
γ (km/s)	---	-60.29133606311268±2.43506042037530	---	---

WASP-81 b Planetary Parameters (4 Solutions)

Status: Confirmed Planet

Detected By: Radial Velocity, Transit

Tools: Planetary Systems; Transit Prediction Service; TOI; Transit

Source	Triaud et al. 2017	Kokori et al. 2023	Kokori et al. 2022	ExoFOP	Show Candidate Solutions >>	<< Hide Candidate Solutions
P (days)	2.7164762±0.0000023	2.71648416±0.00000040	2.7164835±0.0000004	2.71612982158826±0.00018054055000
T_C (days)	2456195.57462+0.00023-0.00020 (BJD)	2457705.94057±0.00023 (BJD-TDB)	2456969.77318±0.00020 (BJD-TDB)	2459770.47061200±0.00099725 (BJD)
T_eq (K)	1623+38-37	---	---	1446.3035429977
S (S_⨁)	---	---	---	1034.09110416948
R_p (R_⨁)	16.02+0.57-0.52	---	---	14.5541659348438±0.7971057000000
R_p (R_Jup)	1.429+0.051-0.046	---	---	1.29843795117283±0.07111312984953
δ (%)	---	---	---	1.45274470152474±0.05786479000000
T₁₄ (hours)	---	---	---	3.5299033351722±0.0717909600000
a/R_✶	6.56+0.13-0.16	6.56+0.13-0.16	---	---
M_p (M_⨁)	232+11-11	---	---	---
M_p (M_Jup)	0.729+0.036-0.035	---	---	---
e	<0.066	---	---	---
i (deg)	88.69+0.88-0.92	88.7±0.9	---	---
ρ (g/cm³)	0.332±0.031	---	---	---
K (m/s)	100.8+3.4-3.3	---	---	---
a (au)	0.03908+0.00070-0.00072	---	---	---
R_p/R_✶	---	0.1120±0.0012	---	---

Nearby Data (within 30 arcseconds)

Known Objects: 1 Confirmed Planets; 3 2MASS Point Source Catalog

Data Files: 4 KELT Time Series; 1 Associated Literature Data

Bibliography (8 References)

System

Star

Confirmed

Candidate

False Positive Planet

Controversial

False Positive

Aliases

Data Access

Transit Prediction Service

Time Series

Kepler | K2

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