NGTS-21 Overview

NGTS-21 0.83 R_⦿ 4650.00 K

NGTS-21 b

1.330 R_Jup

Overview System Parameters Nearby Data Legend

Architecture: NGTS-21; NGTS-21

Other Data: Bibliography 2; Nearby Data 4

Discovery Data

Host	Planet	Method	Year	Reference	Disposition
NGTS-21	NGTS-21 b	Transit	2022	Alves et al. 2022	Confirmed Planet

NGTS-21 Stellar Parameters (2 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: ExoFOP Target Overview Page; IRSA Finding Chart; Stellar Hosts

Source	Alves et al. 2022	TICv8
T_eff (K)	4660±41	4650.0±122.0
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
log g (log₁₀(cm/s²))	4.63±0.34	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 (1 Solutions)

Status: Confirmed Planet
Detected By: Radial Velocity, Transit

Tools: Transit Prediction Service; Transit

Source	Alves et al. 2022
a/R_✶	5.89±0.12
T_eq (K)	1357±15
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
P (days)	1.5433897±0.0000016
ρ (g/cm³)	1.25±0.15
R_p (R_⨁)	14.9±0.3
R_p (R_Jup)	1.33±0.03
R_p/R_✶	0.159±0.003
K (m/s)	506±37
a (au)	0.0236±0.0005
T₁₄ (hours)	1.95±0.03
T_C (days)	2458228.77853±0.00067

Nearby Data (4 Data Types within 30 arcseconds)

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

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

Bibliography (2 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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