NGTS-21 Overview

NGTS-21 0.83 R_⦿ 4650.00 K

NGTS-21 b

1.330 R_Jup

Overview Parameters Nearby Data Bibliography 3 Legend Expand All

NGTS-21 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
NGTS-21
NGTS-21 b	1.54 d	14.91 R_⨁	Transit	2022	Alves et al. 2022	Confirmed Planet

NGTS-21 Stellar Parameters (3 Solutions)

RA: 20h45m01.99s

Dec: -35d25m40.23s

Distance: 592.891+15.995-15.190
pc

Parallax: 1.6593700±0.0439847 mas

Ecliptic Latitude: -16.7492 deg

Ecliptic Longitude: 304.13228 deg

Galactic Latitude: -37.53419 deg

Galactic Longitude: 7.6079 deg

Total Proper Motion: 15.4860419±0.0619077 mas/yr

Proper Motion (RA): -13.3874000±0.0645465 mas/yr

Proper Motion (Dec): -7.7842800±0.0533444 mas/yr

Photometry: m_V
15.506±0.103; m_TESS
14.5499±0.0060; m_J
13.622±0.027; m_H
13.105±0.028; m_Ks
12.951±0.029; m_W1
12.898±0.024; m_W2
12.969±0.027; m_W3
12.485±0.515; m_W4
9.0; m_Gaia
15.224000±0.000406; m_B
16.634±0.092

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

Source	Alves et al. 2022	TICv8	ExoFOP
T_eff (K)	4660±41	4650.0±122.0	4650±122
L_✶ (log₁₀(L_⦿))	---	-0.5385385	---
ρ_✶ (g/cm³)	1.62±0.10	1.83217	---
M_✶ (M_⦿)	0.72±0.04	0.74	---
R_✶ (R_⦿)	0.86±0.04	0.828853	0.8288530111312866
log g (log₁₀(cm/s²))	4.63±0.34	4.47034	4.47034
Metallicity (dex)	-0.26±0.07 [Fe/H]	---	---
γ (km/s)	13.75±0.02	---	---
Age (Gyr)	10.02+3.29-7.30	---	---
Sp. T	K3 V	---	---
P_rot (days)	17.89±0.08	---	---

NGTS-21 b Planetary Parameters (2 Solutions)

Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Alves et al. 2022	ExoFOP
T_eq (K)	1357±15	1214.5650469093016
S (S_⨁)	---	514.2853067554806
P (days)	1.5433897±0.0000016	1.5435057410809994±0.0001966337000000
R_p (R_⨁)	14.9±0.3	13.032116083046327±0.930017300000000
R_p (R_Jup)	1.33±0.03	1.1626495246839286±0.0829707289976867
δ (%)	---	2.54656222993293±0.12604100000000
T₁₄ (hours)	1.95±0.03	1.9863723329551066±0.1361250400000000
T_C (days)	2458228.77853±0.00067 (BJD-TDB)	2460883.40727500±0.00169441 (BJD)
a/R_✶	5.89±0.12	---
b	0.63±0.03	---
ω (deg)	90	---
M_p (M_⨁)	750±67	---
M_p (M_Jup)	2.36±0.21	---
e	0	---
i (deg)	83.85±0.44	---
ρ (g/cm³)	1.25±0.15	---
R_p/R_✶	0.159±0.003	---
K (m/s)	506±37	---
a (au)	0.0236±0.0005	---

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

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

Bibliography (3 References)

NGTS-21b: an inflated Super-Jupiter orbiting a metal-poor K dwarf
Alves et al. 2022 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
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Debug Info

https://vmexoweb2.ipac.caltech.edu/data/Overviews_2.0/39/NGTS-21.json

NGTS-21

Catalog Parameters

20h45m01.99s

Dec

dec

-35d25m40.23s

elat

-16.7492

elon

304.13228

glat

-37.53419

glon

7.6079

m_V

sy_vmag

15.506±0.103

m_TESS

sy_tmag

14.5499±0.0060

m_J

sy_jmag

13.622±0.027

m_H

sy_hmag

13.105±0.028

m_Ks

sy_kmag

12.951±0.029

sy_kepmag

no_data

m_W1

sy_w1mag

12.898±0.024

m_W2

sy_w2mag

12.969±0.027

m_W3

sy_w3mag

12.485±0.515

m_W4

sy_w4mag

9.0

sy_icmag

no_data

m_Gaia

sy_gaiamag

15.224000±0.000406

m_B

sy_bmag

16.634±0.092

sy_gmag

no_data

sy_imag

no_data

sy_rmag

no_data

sy_umag

no_data

sy_zmag

no_data

sy_pm

15.4860419±0.0619077

μ_δ

sy_pmdec

-7.7842800±0.0533444

μ_α

sy_pmra

-13.3874000±0.0645465

sy_plx

1.6593700±0.0439847

Distance

sy_dist

592.891+15.995-15.190

Set Parameters

R_✶

st_rad

0.828853

T_eff

st_teff

4650.0±122.0