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HD 21520 Overview

HD 21520 1.04 R⦿ 5871.00 K
?
TOI-4320.01
0.172 RJup
HD 21520 b
0.241 RJup
?
TOI-4320.02
0.195 RJup
Architecture
HD 21520
HD 21520
TOI-4320.01
HD 21520 b
TOI-4320.02
Other Data
Bibliography 4
Exoplanet Archive Notes 1
Nearby Data 4
Discovery Data
Host Planet Method Year Reference Disposition
HD 21520 TOI-4320.01 Transit 2021 TESS Project Candidate Planet
HD 21520 HD 21520 b Transit 2024 Nies et al. 2024 Confirmed Planet
HD 21520 TOI-4320.02 Transit 2021 TESS Project Candidate Planet
HD 21520 b
  • Equilibrium temperature was calculated assuming a Bond albedo of 0.3. (Nies et al. 2024)
RA
03h26m33.68s
Dec
-43d36m49.19s
Distance
79.2080+0.1598-0.1592
pc
Parallax
12.5961000±0.0252333 mas
Ecliptic Latitude
-59.17055 deg
Ecliptic Longitude
28.74447 deg
Galactic Latitude
-54.76985 deg
Galactic Longitude
251.10844 deg
Total Proper Motion
22.9336360±0.0544223 mas/yr
Proper Motion (RA)
-2.3588800±0.0368698 mas/yr
Proper Motion (Dec)
-22.8120000±0.0545795 mas/yr
Photometry
mV
9.17±0.03
mTESS
8.6022±0.0060
mJ
8.048±0.030
mH
7.764±0.042
mKs
7.707±0.016
mW1
7.63±0.03
mW2
7.704±0.020
mW3
7.682±0.018
mW4
7.593±0.097
mGaia
9.017960±0.000181
mB
9.806±0.000
Tools
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Nies et al. 2024 TICv8 ExoFOP-TESS TOI ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
5871±62
5871.000+142.198-108.388
 5871.000±125.293 5871.000±125.293
R✶
(R⦿)
1.044±0.024
1.0356300+0.0474442-0.0532291
 1.04±0.05 1.03562998771667±0.05033670000000
log g
(log10(cm/s2))
4.42±0.03
4.4329600+0.0632942-0.0948875
 4.4329600±0.0790908 4.4329600±0.0790908
L✶
(log10(L⦿))
0.06595+0.00519-0.00526
0.059953994+0.014998417-0.009817518
 --- ---
ρ✶
(g/cm3)
1.35±0.13
1.345411+0.366803-0.223291
 --- ---
M✶
(M⦿)
1.09±0.07
1.060000+0.150431-0.121446
 --- ---
Metallicity
(dex)
0.049±0.042 [Fe/H] --- --- ---
v sin i
(km/s)
2.50±0.25 --- --- ---
Age
(Gyr)
5.3±1.1 --- --- ---
CAII LOG RHK
-4.93±0.06 --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Transit Prediction Service
Transit
Source Nies et al. 2024
a/R✶
35.6+1.1-1.2
Teq
(K)
637+13-12
b
0.478+0.058-0.066
Mp
(M⨁)
<17.7
Mp
(MJup)
<0.0557
e
0
i
(deg)
89.23±0.12
P
(days)
25.129200+0.000089-0.000073
ρ
(g/cm3)
1.35±0.13
Rp
(R⨁)
2.697±0.090
Rp
(RJup)
0.2406±0.0080
Rp/R✶
0.02369±0.00056
K
(m/s)
1.64±0.63
a
(au)
0.1726±0.0071
T14
(hours)
4.885+0.083-0.075
TC
(days)
2459160.0157±0.0015
Print
Status
Candidate Planet
Detected By
Transit
Tools
Transit Prediction Service
TOI
Source ExoFOP-TESS TOI
Teq
(K)
627
S
(S⨁)
25.7431
P
(days)
25.1290153±0.0004454
Rp
(R⨁)
1.932260±0.137194
Rp
(RJup)
0.1723850±0.0122396
δ
(%)
0.0465000±0.0029781
T14
(hours)
4.271±0.503
TC
(days)
2459160.0141560±0.0121773
Print
Status
Candidate Planet
Detected By
Transit
Tools
Transit Prediction Service
TOI
Source ExoFOP-TESS TOI
Teq
(K)
519.196665682136
S
(S⨁)
17.1730953263344
P
(days)
46.4093732462209±0.0003647566000
Rp
(R⨁)
2.18629967494351±1.71219500000000
Rp
(RJup)
0.195048928484952±0.152752069597194
δ
(%)
0.0435734750459407±0.0056765373000000
T14
(hours)
4.82233701122434±0.83413990000000
TC
(days)
2458417.46633200±0.00431896
Print
Known Objects
1 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
1 SuperWASP Time Series
1 Associated Literature Data
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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NASA Exoplanet Archive is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program.