NGTS-31 Overview

NGTS-31 0.97 R_⦿ 5744.20 K

NGTS-31 b

1.610 R_Jup

Overview Parameters Nearby Data Bibliography 3 Legend Expand All

NGTS-31 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
NGTS-31
NGTS-31 b	4.16 d	18.05 R_⨁	Transit	2025	Vines et al. 2025	Confirmed Planet

NGTS-31 Stellar Parameters (2 Solutions)

RA: 05h21m41.10s

Dec: -38d39m24.58s

Distance: 497.376 pc

Parallax: ---

Ecliptic Latitude: -61.57044 deg

Ecliptic Longitude: 74.1564 deg

Galactic Latitude: -33.37402 deg

Galactic Longitude: 243.12826 deg

Total Proper Motion: 6.48820±3.27827 mas/yr

Proper Motion (RA): -4.61250±3.27827 mas/yr

Proper Motion (Dec): -4.56307±3.27827 mas/yr

Photometry: m_V
13.519±0.103; m_TESS
12.8482±0.0060; m_J
12.175±0.023; m_H
11.822±0.024; m_Ks
11.775±0.024; m_W1
11.695±0.023; m_W2
11.738±0.020; m_W3
11.614±0.135; m_W4
8.628; m_Gaia
13.303000±0.000442; m_B
14.118±0.017

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

Source	Vines et al. 2025	ExoFOP
T_eff (K)	5710±70	5744.2±324.9
R_✶ (R_⦿)	1.70+0.20-0.21	0.970±0.110
Metallicity (dex)	0.0±0.0 [Fe/H]	---
v sin i (km/s)	6.1±0.6	---
Age (Gyr)	9.970±2.580	---
ρ_✶ (g/cm³)	0.585+0.021-0.018	---
M_✶ (M_⦿)	0.960+0.110-0.050	---
log g (log₁₀(cm/s²))	4.43+0.14-0.16	---

NGTS-31 b Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Vines et al. 2025	ExoFOP
a/R_✶	8.16+0.09-0.08	---
T_eq (K)	1410±20	1265
b	0.63±0.01	---
S (S_⨁)	643+29-26	425.348
ω (deg)	90	---
M_p (M_⨁)	356±38	---
M_p (M_Jup)	1.12±0.12	---
e	0	---
i (deg)	85.6±0.1	---
P (days)	4.162734±0.000004	4.1627330±0.0000057
ρ (g/cm³)	0.30+0.11-0.08	---
R_p (R_⨁)	18.0±1.8	11.10570±1.27605
R_p (R_Jup)	1.61±0.16	0.9907859±0.1138418
R_p/R_✶	0.110±0.001	---
K (m/s)	146.63+8.26-5.97	---
a (au)	0.064±0.008	---
T_C (days)	2459039.1615±0.0004 (BJD)	2459222.3217060±0.0007444 (BJD)
δ (%)	---	1.287000000±0.000297953
T₁₄ (hours)	---	3.319±0.161

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

Data Files: 1 SuperWASP Time Series; 1 Associated Literature Data

Bibliography (3 References)

NGTS-31b and NGTS-32b: two inflated hot Jupiters orbiting subgiant stars
Vines et al. 2025 Reference Overview
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview
ExoFOP TOI Table
ExoFOP

Legend

System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive

Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2

External Link
Search
Browse
Download

Debug Info

https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/39/NGTS-31.json

NGTS-31

Catalog Parameters

05h21m41.10s

Dec

dec

-38d39m24.58s

elat

-61.57044

elon

74.1564

glat

-33.37402

glon

243.12826

m_V

sy_vmag

13.519±0.103

m_TESS

sy_tmag

12.8482±0.0060

m_J

sy_jmag

12.175±0.023

m_H

sy_hmag

11.822±0.024

m_Ks

sy_kmag

11.775±0.024

sy_kepmag

no_data

m_W1

sy_w1mag

11.695±0.023

m_W2

sy_w2mag

11.738±0.020

m_W3

sy_w3mag

11.614±0.135

m_W4

sy_w4mag

8.628

sy_icmag

no_data

m_Gaia

sy_gaiamag

13.303000±0.000442

m_B

sy_bmag

14.118±0.017

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

sy_pm

6.48820±3.27827

μ_δ

sy_pmdec

-4.56307±3.27827

μ_α

sy_pmra

-4.61250±3.27827

sy_plx

no_data

Distance

sy_dist

497.376

Set Parameters

R_✶

st_rad

0.970±0.110

T_eff

st_teff

5744.2±324.9