HD 221420 Overview

HD 221420 2.00 R⦿ 5830.00 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)
  • The authors note that the data is equally well fit by a retrograde orbital inclination of 162 +/-2 deg. (Philipot et al. 2023)
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
297.79473 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
Abundances
(Hypatia Catalog)
[Fe/H] 0.34±0.18 dex
[C/H] 0.39±0.07 dex
[O/H] 0.25±0.10 dex
[Na/H] 0.48±0.09 dex
[Mg/H] 0.44±0.12 dex
[Al/H] 0.44±0.12 dex
[Si/H] 0.39±0.04 dex
[Ca/H] 0.37±0.07 dex
[BaII/H] 0.26±0.18 dex
Source Philipot et al. 2023 Feng et al. 2022 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
S Index
--- --- --- --- --- --- --- --- --- --- 0.147 --- ---
CAII LOG RHK
-5.28 --- -5.05 --- --- --- --- --- --- --- -5.09 --- ---
Teff
(K)
--- --- --- 5847±22
5847.3700+92.7241-118.5930
5830±44
5773.5+93.5-97.5
--- --- --- --- --- ---
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] --- --- --- --- --- --- ---
M
(M⦿)
1.34±0.07 1.060±0.133 1.28±0.08 1.351±0.013
1.0600000+0.1843400-0.0822995
1.67±0.11 --- --- --- --- --- --- ---
log g
(log10(cm/s2))
--- --- --- 4.03±0.03
3.8926800+0.0642696-0.0781251
4.08±0.06 --- --- --- --- --- --- ---
γ
(km/s)
--- --- ---
26.5901+0.0045-0.0033
--- --- 26.506024567091305±0.163226928211102 --- 26.1 26.0±0.2 --- --- ---
v sin i
(km/s)
0.71 --- --- --- --- --- --- --- 2.8±0.5 4 --- --- ---
Sp. T
G1 V --- G2 V G2 IV-V --- --- --- G2 IV-V --- --- --- G2 V K0
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
--- --- --- --- --- ---
R
(R⦿)
--- --- --- 1.947±0.013
1.9290700+0.0927196-0.0688231
---
2.0009587+0.0693338-0.0632687
--- --- --- --- --- ---
ρ
(g/cm3)
--- --- --- ---
0.2081764+0.0468051-0.0343754
--- --- --- --- --- --- --- ---
Age
(Gyr)
3.7±0.5 ---
6.60+3.70-2.00
3.65±0.23 --- --- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Source Philipot et al. 2023 Feng et al. 2022 Li et al. 2021 Venner et al. 2021 Kane et al. 2019
Tp
(days)
2456624+513-220
2448980.150+466.743-569.662
2456580+430-280
2456440+230-260
---
ω
(deg)
217+24-10
264.924+14.955-16.520
219+17-12
211+10-11
164.4+6.9-6.3
Mp
(M)
6992±636
6467.8+631.2-1090.5
6547+636-509
7278±699 ---
Mp
(MJup)
22±2
20.350+1.986-3.431
20.6+2.0-1.6
22.9±2.2 ---
Mp sin i
(M)
--- ---
1983+207-188
2002+159-95
3083+350-318
Mp sin i
(MJup)
--- ---
6.24+0.65-0.59
6.3+0.5-0.3
9.70+1.10-1.00
e
0.12+0.04-0.03
0.0820±0.0150
0.162+0.035-0.030
0.14+0.04-0.03
0.42+0.05-0.07
i
(deg)
14±1
13.157+2.282-0.844
17.8+2.9-2.8
164.0+1.9-2.6
---
P
(days)
10066+929-1125
8615.41549+279.48259-191.17910
10120+1100-910
10090+890-560
22482+4200-4100
a
(au)
10.1±0.7
8.398+0.414-0.379
9.990+0.740-0.700
10.15+0.59-0.38
18.5±2.3
K
(m/s)
---
44.182+1.109-0.911
---
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
External Link
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