HD 221420 Overview

HD 221420 1.95 R⦿ 5847.00 K
HD 221420 b
Architecture
HD 221420
HD 221420
HD 221420 b
Discovery Data
Host Planet Method Year Reference Disposition
HD 221420 HD 221420 b Radial Velocity 2019 Kane et al. 2019 Confirmed Planet
HD 221420 b
  • The authors note that the data is equally well fit by a retrograde orbital inclination of 162.2 +2.8 -2.9. (Li et al. 2021)
RA
23h33m19.66s
Dec
-77d23m07.18s
Distance
31.1415±0.0376 pc
Parallax
32.0826000±0.0384806 mas
Ecliptic Latitude
-62.282 deg
Ecliptic Longitude
297.7986 deg
Galactic Latitude
-38.91481 deg
Galactic Longitude
308.31538 deg
Total Proper Motion
16.3249779±0.0705706 mas/yr
Proper Motion (RA)
16.3037000±0.0705655 mas/yr
Proper Motion (Dec)
0.8332290±0.0724907 mas/yr
Photometry
mV
5.82±0.03
mTESS
5.2241±0.0062
mJ
4.997±0.252
mH
4.527±0.238
mKs
4.306±0.036
mW1
4.367±0.263
mW2
3.809±0.166
mW3
4.204±0.012
mW4
4.283±0.026
mGaia
5.6586200±0.0013644
mB
6.489±0.020
Source Li et al. 2021 Venner et al. 2021 TICv8 Kane et al. 2019 Gaia DR2 Gray et al. 2006 Valenti & Fischer 2005 Nordstrom et al. 2004 Henry et al. 1996 Michigan Catalog, Vol. 1 Cannon & Pickering 1918
Teff
(K)
--- 5847±22
5847.3700+92.7241-118.5930
5830±44
5773.5+93.5-97.5
--- --- --- --- --- ---
L
(log10(L⦿))
0.5855+0.0080-0.0082
0.6029+0.0009-0.0009
0.59323111+0.01354395-0.01015666
---
0.60292765+0.00086335-0.00086505
--- --- --- --- --- ---
Metallicity
(dex)
0.34±0.07 [Fe/H] 0.33±0.02 [Fe/H] 0.3352210±0.0105146 [M/H] 0.29±0.03 [Fe/H] --- --- --- --- --- --- ---
γ
(km/s)
---
26.5901+0.0045-0.0033
--- --- 26.506024567091305±0.163226928211102 --- 26.1 26.0±0.2 --- --- ---
Age
(Gyr)
6.60+3.70-2.00
3.65±0.23 --- --- --- --- --- --- --- --- ---
M
(M⦿)
1.28±0.08 1.351±0.013
1.0600000+0.1843400-0.0822995
1.67±0.11 --- --- --- --- --- --- ---
R
(R⦿)
--- 1.947±0.013
1.9290700+0.0927196-0.0688231
---
2.0009587+0.0693338-0.0632687
--- --- --- --- --- ---
log g
(log10(cm/s2))
--- 4.03±0.03
3.8926800+0.0642696-0.0781251
4.08±0.06 --- --- --- --- --- --- ---
Sp. T
G2 V G2 IV-V --- --- --- G2 IV-V --- --- --- G2 V K0
CAII LOG RHK
-5.05 --- --- --- --- --- --- --- -5.09 --- ---
S Index
--- --- --- --- --- --- --- --- 0.147 --- ---
v sin i
(km/s)
--- --- --- --- --- --- 2.8±0.5 4 --- --- ---
ρ
(g/cm3)
--- ---
0.2081764+0.0468051-0.0343754
--- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Source Venner et al. 2021 Li et al. 2021 Kane et al. 2019
Tp
(days)
2456440+230-260
2456580+430-280
---
ω
(deg)
211+10-11
219+17-12
164.4+6.9-6.3
Mp
(M)
7278±699
6547+636-509
---
Mp
(MJup)
22.9±2.2
20.6+2.0-1.6
---
Mp sin i
(M)
2002+159-95
1983+207-188
3083+350-318
Mp sin i
(MJup)
6.3+0.5-0.3
6.24+0.65-0.59
9.70+1.10-1.00
e
0.14+0.04-0.03
0.162+0.035-0.030
0.42+0.05-0.07
i
(deg)
164.0+1.9-2.6
17.8+2.9-2.8
---
P
(days)
10090+890-560
10120+1100-910
22482+4200-4100
a
(au)
10.15+0.59-0.38
9.990+0.740-0.700
18.5±2.3
K
(m/s)
48.5+2.5-1.9
---
54.7+4.2-3.6
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Photometric Light Curve     152 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
1 Confirmed Planets
3 2MASS Point Source Catalog
Data Files
1 Associated Literature Data
System
Star
Confirmed
Candidate
False Positive Planet
Controversial
False Positive
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
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