HAT-P-21 Overview

HAT-P-21 1.10 R_⦿ 5588.00 K

HAT-P-21 b

1.110 R_Jup

Overview System Parameters Ancillary Nearby Data Legend

Architecture: HAT-P-21; HAT-P-21

Other Data: Bibliography 11; Nearby Data 4

Discovery Data

Host	Planet	Method	Year	Reference	Disposition
HAT-P-21	HAT-P-21 b	Transit	2010	Bakos et al. 2010	Confirmed Planet

HAT-P-21 Stellar Parameters (6 Solutions)

RA: 11h25m05.98s

Dec: +41d01m40.87s

Distance: 277.278+3.215-3.144
pc

Parallax: 3.5780700±0.0410445 mas

Ecliptic Latitude: 33.83073 deg

Ecliptic Longitude: 153.84594 deg

Galactic Latitude: 67.4636 deg

Galactic Longitude: 169.32461 deg

Total Proper Motion: 13.2872218±0.0613674 mas/yr

Proper Motion (RA): -1.0880300±0.0469413 mas/yr

Proper Motion (Dec): 13.2426000±0.0614533 mas/yr

Photometry: m_V
11.459±0.025; m_TESS
11.1065±0.0066; m_J
10.503±0.022; m_H
10.154±0.019; m_Ks
10.111±0.018; m_W1
10.073±0.024; m_W2
10.112±0.021; m_W3
10.021±0.056; m_W4
9.158; m_Gaia
11.558300±0.001203; m_B
12.560±0.261; m_g
12.4013000±0.0011576; m_i
11.4387000±0.0010851; m_r
11.591500±0.000714; m_u
14.8395000±0.0064982; m_z
13.5320000±0.0156687

Abundances (Hypatia Catalog): [Fe/H] 0.07±0.04 dex; [C/H] 0.16±0.04 dex; [Na/H] -0.03±0.06 dex; [Mg/H] 0.16±0.04 dex; [Al/H] 0.10±0.06 dex; [Si/H] 0.09±0.05 dex; [Ca/H] 0.10±0.05 dex; [BaII/H] 0.13±0.19 dex

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

Source	TICv8	Gaia DR2	Bonomo et al. 2017	Stassun et al. 2017	Bakos et al. 2010	ExoFOP-TESS TOI	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	5634.0000+98.0306-152.0340	5566.50+203.25-166.40	5588±80	5588±80	5588±80	5634.000±125.032
L_✶ (log₁₀(L_⦿))	0.15593665+0.01562626-0.01408278	0.14812782+0.00718411-0.00730495	---	---	0.025 +0.075-0.071	---
Metallicity (dex)	0.040±0.080 [M/H]	---	0.010±0.080	0.01 [Fe/H]	0.01±0.08 [Fe/H]	---
γ (km/s)	---	-51.98425933314376±0.69840027472255	---	---	-53.19±0.09	---
v sin i (km/s)	---	---	3.50±0.50	---	3.5±0.5	---
Age (Gyr)	---	---	10.2±2.5	---	10.2±2.5	---
M_✶ (M_⦿)	1.000000+0.108489-0.139502	---	0.947±0.042	1.24±0.60	0.947±0.042	---
R_✶ (R_⦿)	1.2559900+0.0782332-0.0537015	1.2751231+0.0797947-0.0882548	1.105±0.083	1.21±0.17	1.105±0.083	1.26±0.07
log g (log₁₀(cm/s²))	4.2400900+0.0643546-0.0977416	---	---	4.33±0.06	4.33±0.06	4.2400900±0.0810481
Sp. T	---	---	---	---	G3	---
ρ_✶ (g/cm³)	0.7115464+0.2173839-0.0988677	---	---	1.00±0.23	---	---
P_rot (days)	---	---	15.90±0.80	---	---	---

HAT-P-21 b Planetary Parameters (7 Solutions)

Status: Confirmed Planet
Detected By: Radial Velocity, Transit

Tools: Transit Prediction Service; TOI; Transit

Source	Stassun et al. 2017	Kokori et al. 2023	Patel & Espinoza 2022	Ivshina & Winn 2022	Bonomo et al. 2017	Bakos et al. 2010	ExoFOP-TESS TOI	Show Candidate Solutions >>	<< Hide Candidate Solutions
P (days)	4.124480±0.000007	4.12448852±0.00000069	4.1244799±0.0000063	4.12448799±0.00000096	4.1244810±0.0000070	4.124481±0.000007	4.1244833±0.0000044
T_C (days)	---	2458159.89639±0.00027	2458910.55349+0.00051-0.00050	2458902.30403±0.00044	2454996.41389±0.00069	2454996.41312±0.00069	2459632.3383360±0.0005015
ω (deg)	---	309.0±3.0	---	---	305.8+2.1-1.9	309±3	---
M_p (M_⨁)	1548±499	---	---	---	1262±41	1291.289±51.168	---
M_p (M_Jup)	4.87±1.57	---	---	---	3.97±0.13	4.063±0.161	---
e	0.23±0.02	0.228±0.016	---	---	0.2170±0.0100	0.228±0.016	---
i (deg)	87.20±0.70	87.2±0.7	---	---	87.20±0.70	87.2±0.7	---
ρ (g/cm³)	---	---	---	---	4.6+1.5-1.0	4.68 +1.59-0.99	---
R_p (R_⨁)	12.4±1.8	---	---	---	11.48±1.03	11.478±1.031	12.424900±0.670575
R_p (R_Jup)	1.11±0.16	---	---	---	1.024±0.092	1.024±0.092	1.1084772±0.0598248
K (m/s)	548.3±14.2	---	---	---	533.8±6.1	548.3±14.2	---
a (au)	---	---	---	---	0.04950+0.00072-0.00075	0.0494±0.0007	---
a/R_✶	9.650±0.740	9.60±0.70	8.94+0.70-0.51	---	---	9.60±0.71	---
T_eq (K)	---	---	---	---	---	1283±50	1289
b	---	---	0.611+0.059-0.107	---	---	0.546 +0.074-0.139	---
R_p/R_✶	---	0.0950±0.0022	0.0928+0.0019-0.0026	---	---	0.0950±0.0022	---
δ (%)	0.900±0.042	---	---	---	---	0.7341	0.959000000±0.000124726
T₁₄ (hours)	---	---	---	---	---	3.6720±0.0648	3.567±0.074
S (S_⨁)	---	---	---	---	---	---	459.542

Ancillary Information (1 Unique File)

+ HAT-P-21 (1 File Type, 1 File)

Literature Time Series (1 File Type, 1 File)

File Type	Data Points	Filter	Reference
Radial Velocity Curve	15	Optical Spectra	Bakos et al. 2010

Nearby Data (4 Data Types within 30 arcseconds)

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

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

Bibliography (11 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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