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)
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
Source 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
--- -5.05 --- --- --- --- --- --- --- -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⦿)
1.060±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)
--- --- --- --- --- --- --- 2.8±0.5 4 --- --- ---
Sp. T
--- 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)
---
6.60+3.70-2.00
3.65±0.23 --- --- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Source Feng et al. 2022 Li et al. 2021 Venner et al. 2021 Kane et al. 2019
Tp
(days)
2448980.15018957+466.74293978-569.66201990
2456580+430-280
2456440+230-260
---
ω
(deg)
264.923778145198+14.954505398964-16.519942361090
219+17-12
211+10-11
164.4+6.9-6.3
Mp
(M)
6363.40183454334+735.48485232612-986.07312836909
6547+636-509
7278±699 ---
Mp
(MJup)
20.0215012075473+2.3140941342166-3.1025330230129
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
0.0820131827787579+0.0146443775498728-0.0150087208526890
0.162+0.035-0.030
0.14+0.04-0.03
0.42+0.05-0.07
i
(deg)
13.1572238815394+2.2816624257037-0.8441264096239
17.8+2.9-2.8
164.0+1.9-2.6
---
P
(days)
8615.41549087963+279.48259329996-191.17910137977
10120+1100-910
10090+890-560
22482+4200-4100
K
(m/s)
44.1820027608137+1.1087068780474-0.9105644763074
---
48.5+2.5-1.9
54.7+4.2-3.6
a
(au)
8.41658642403895+0.39544344728750-0.39751991660947
9.990+0.740-0.700
10.15+0.59-0.38
18.5±2.3
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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