TOI-603 Overview

TOI-603 1.63 R_⦿ 5900.80 K

TOI-603 b

0.658 R_Jup

Overview Parameters Nearby Data Bibliography 3 Legend Expand All

TOI-603 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
TOI-603
TOI-603 b	16.18 d	7.37 R_⨁	Transit	2026	Lillo-Box et al. 2026	Confirmed Planet

TOI-603 Stellar Parameters (3 Solutions)

RA: 09h24m25.89s

Dec: +05d45m57.80s

Distance: 205.924+1.592-1.569
pc

Parallax: 4.8275800±0.0369886 mas

Ecliptic Latitude: -8.99258 deg

Ecliptic Longitude: 141.627 deg

Galactic Latitude: 36.44067 deg

Galactic Longitude: 226.69896 deg

Total Proper Motion: 48.1768339±0.0543540 mas/yr

Proper Motion (RA): -20.4710000±0.0587683 mas/yr

Proper Motion (Dec): -43.6113000±0.0533323 mas/yr

Photometry: m_V
10.312±0.008; m_TESS
9.74179±0.00610; m_J
9.207±0.028; m_H
8.860±0.023; m_Ks
8.844±0.026; m_W1
8.791±0.023; m_W2
8.832±0.020; m_W3
8.800±0.028; m_W4
8.836±0.443; m_Gaia
10.163900±0.000326; m_B
10.821±0.123

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

Source	Lillo-Box et al. 2026	TICv8	ExoFOP
T_eff (K)	6027±93	5900.750+144.463-114.694	5900.8±129.6
R_✶ (R_⦿)	1.477±0.046	1.6295200+0.0856839-0.0801452	1.63±0.08
log g (log₁₀(cm/s²))	4.255±0.042	4.0441400+0.0811207-0.0762840	4.04±0.08
L_✶ (log₁₀(L_⦿))	0.4136+0.0038-0.0039	0.46244367+0.01245445-0.02090956	---
Metallicity (dex)	0.183±0.055 [Fe/H]	0.176±0.012 [M/H]	---
ρ_✶ (g/cm³)	---	0.3492859+0.0782813-0.0731473	---
M_✶ (M_⦿)	1.240±0.092	1.072000+0.127553-0.145211	---
v sin i (km/s)	4.196±0.069	---	---
Sp. T	F8 IV	---	---

TOI-603 b Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Lillo-Box et al. 2026	ExoFOP
T_eq (K)	899±17	942
S (S_⨁)	157+12-11	131.122
P (days)	16.179846+0.000019-0.000017	16.1798603±0.0000461
R_p (R_⨁)	7.37+0.24-0.23	7.899580±0.412377
R_p (R_Jup)	0.658+0.021-0.021	0.7047545±0.0367899
δ (%)	---	0.22490000±0.00453053
T₁₄ (hours)	6.834+0.043-0.037	6.495±0.240
T_C (days)	2460271.21509+0.00093-0.00092 (BJD)	2460271.2182860±0.0023676 (BJD)
a/R_✶	18.76+0.20-0.48	---
b	0.137+0.121-0.095	---
M_p (M_⨁)	33.0+6.5-6.2	---
M_p (M_Jup)	0.104+0.020-0.020	---
i (deg)	89.58+0.39-0.29	---
ρ (g/cm³)	0.453+0.089-0.084	---
R_p/R_✶	0.04570+0.00031-0.00037	---
K (m/s)	8.0±1.4	---
a (au)	0.1282+0.0046-0.0049	---

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 1 Associated Literature Data

Bibliography (3 References)

CAFE follow-up of TESS hot Jupiter candidates left behind: I. Five newly confirmed planets and a false positive
Lillo-Box et al. 2026 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
ExoFOP TOI Table
ExoFOP

System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

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