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HD 222237 Overview

HD 222237 0.72 R⦿ 4723.00 K
HD 222237 b

HD 222237 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
HD 222237
HD 222237 b 14892 d 1649.53 M⨁ Radial Velocity 2024 Xiao et al. 2024 Confirmed Planet
HD 222237 b
RA
23h39m37.89s
Dec
-72d43m31.18s
Distance
11.4469+0.0035-0.0034
pc
Parallax
87.3306000±0.0258796 mas
Ecliptic Latitude
-59.95271 deg
Ecliptic Longitude
306.20404 deg
Galactic Latitude
-43.37999 deg
Galactic Longitude
310.16617 deg
Total Proper Motion
750.6775437±0.0428848 mas/yr
Proper Motion (RA)
143.793000±0.051273 mas/yr
Proper Motion (Dec)
-736.7770000±0.0425326 mas/yr
Photometry
mV
7.09±0.03
mTESS
6.1131±0.0060
mJ
5.249±0.018
mH
4.745±0.061
mKs
4.581±0.029
mIc
5.980
mGaia
6.73988±0.00021
mB
8.102±0.020
Abundances
(Hypatia Catalog)
[Fe/H] -0.31±0.22 dex
[C/H] 0.81±0.72 dex
[O/H] -0.02±0.09 dex
[Na/H] -0.23±0.11 dex
[Mg/H] -0.19±0.04 dex
[Al/H] -0.02±0.04 dex
[Si/H] -0.25±0.15 dex
[Ca/H] -0.24±0.15 dex
[BaII/H] -0.39±0.19 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source Piccinini et al. 2026 An et al. 2025 Xiao et al. 2024 TICv8 Turnbull 2015 Sousa et al. 2008 Takeda et al. 2007 Gray et al. 2006 Valenti & Fischer 2005 Nordstrom et al. 2004 Michigan Catalog, Vol. 1 Cannon & Pickering 1918
Teff
(K)
4751±139 --- 4751±139
4751.570+163.407-115.228
 4723 4780±64 --- --- --- --- --- ---
L✶
(log10(L⦿))
--- --- ---
-0.6361762+0.0155798-0.0202268
-0.620 +0.067-0.079
-0.666+0.012-0.012
 --- --- --- --- --- ---
Metallicity
(dex)
--- --- -0.32±0.02 [Fe/H] -0.3172970±0.0197279 [M/H] -0.29 [Fe/H] -0.38±0.04 [Fe/H] --- --- --- --- --- ---
Age
(Gyr)
--- --- --- --- 8.8 --- <5.28 --- --- --- --- ---
M✶
(M⦿)
0.76±0.09 0.700±0.010 0.76±0.09
0.7600000+0.1178720-0.0669726
 0.74 0.479
0.741+0.019-0.028
 --- --- --- --- ---
R✶
(R⦿)
0.71±0.06 --- 0.71±0.06
0.7093990+0.0458739-0.0648799
 0.72 --- 0.72±0.02 --- --- --- --- ---
log g
(log10(cm/s2))
--- --- 4.61±0.10
4.6171000+0.1195710-0.0776845
 4.63 4.37±0.14
4.63+0.02-0.03
 --- --- --- --- ---
Sp. T
K3 V --- K3 V --- K4V --- --- K3+ V --- --- K4 V K0
γ
(km/s)
--- --- --- --- --- --- --- --- 70.0 69.2±0.2 --- ---
v sin i
(km/s)
--- --- --- --- --- --- --- --- 2.4±0.5 3 --- ---
ρ✶
(g/cm3)
--- --- ---
3.001295+1.131135-0.691321
 --- --- --- --- --- --- --- ---
CAII LOG RHK
--- --- -4.86 --- --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Astrometry, Radial Velocity
Tools
Planetary Systems
Source Xiao et al. 2024 Piccinini et al. 2026 Piccinini et al. 2026 An et al. 2025
Tp
(days)
2443747+1661-2116
(JD)
2458650+1405-1520
(BJD)
2458650+1405-1520
(BJD)
---
ω
(deg)
2.6+1.3-1.4
3.3+1.4-1.3
3.3+1.4-1.3
 ---
Mp
(M⨁)
1650±184 1519±133
1529+130-137
1589+477-318
Mp
(MJup)
5.19±0.58 4.78±0.42
4.81+0.41-0.43
5.0+1.5-1.0
Mp sin i
(M⨁)
--- 1240±127 1240±127 ---
Mp sin i
(MJup)
--- 3.9±0.4 3.9±0.4 ---
e
0.56±0.03 0.54±0.03 0.54±0.03
0.54+0.18-0.15
i
(deg)
49.9+3.4-2.8
55.3+4.4-3.0
125.0+2.8-4.3
94.0+28.0-29.0
P
(days)
14892+2112-1655
13997+1514-1397
13997+1514-1397
20089+20089-6940
K
(m/s)
47.4+1.1-1.0
 47.2±0.9 47.2±0.9 ---
a
(au)
10.8+1.1-1.0
10.4+0.9-0.8
10.4+0.9-0.8
12.9+7.6-3.1
Print
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Photometric Light Curve     139 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
1 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
1 SuperWASP Time Series
1 Associated Literature Data
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  • Candidate
  • False Positive Planet
  • Controversial
  • False Positive
  • Aliases
  • Data Access
  • Transit Prediction Service
  • Time Series
  • Kepler | K2
  • External Link
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