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KELT-18 Overview

  • Star: KELT-18
    • Stellar Radius: 1.92 Solar Radius
    • Stellar Effective Temperature: 6767.70 K
    • Planet: KELT-18 b
      • Disposition Confirmed
      • Planet Radius 1.570 Jupiter Radius
  • Star: KELT-18 B

KELT-18 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
KELT-18
KELT-18 b 2.87 d 17.6 R⨁ Transit 2017 McLeod et al. 2017 Confirmed Planet
KELT-18 B
KELT-18
  • This reference contains discussion regarding the stellar multiplicity of this system. (Mugrauer 2019)
RA
14h26m05.72s
Dec
+59d26m39.38s
Distance
321.376+2.509-2.470
pc
Parallax
3.0828400±0.0239248 mas
Ecliptic Latitude
65.5647 deg
Ecliptic Longitude
170.96367 deg
Galactic Latitude
53.81036 deg
Galactic Longitude
102.71473 deg
Total Proper Motion
20.4082171±0.0438013 mas/yr
Proper Motion (RA)
-19.4503000±0.0439719 mas/yr
Proper Motion (Dec)
6.1790900±0.0420736 mas/yr
Photometry
mV 10.160±0.005
mTESS 9.8230±0.0076
mJ 9.454001±0.031000
mH 9.272±0.036
mKs 9.210±0.022
mW1 9.135±0.023
mW2 9.154±0.020
mW3 9.170±0.029
mW4 9.085
mGaia 10.10360±0.00034
mB 10.620±0.066
mg 10.595±0.106
mi 10.031±0.021
mr 10.043±0.016
mz 10.2±0.1
Abundances
(Hypatia Catalog)
[Fe/H] -0.12±0.04 dex
[C/H] 0.13±0.09 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Rubenzahl et al. 2024 TICv8 Gaia DR2 McLeod et al. 2017 ExoFOP
γ
(km/s)
-11.7±0.1 --- -10.830914800759846±0.462549062519371 -11.6±0.1 ---
v sin i
(km/s)
10.2±1.0 --- --- 12.3±0.3 ---
Prot
(days)
<8 --- --- --- ---
Teff
(K)
---
6840.000+119.153-138.440
6767.6953+123.6830-92.1353
 6670±120 6840.0±128.8
L✶
(log10(L⦿))
---
0.8565475+0.0219636-0.0178018
0.84373065+0.00581956-0.00589862
0.813+0.041-0.041
 ---
R✶
(R⦿)
---
1.9090400+0.0849085-0.0724332
1.9214822+0.0534061-0.0683525
1.908+0.042-0.035
 1.91±0.08
Metallicity
(dex)
--- --- --- 0.090±0.130 [Fe/H] ---
Age
(Gyr)
--- --- --- 1.9±0.2 ---
ρ✶
(g/cm3)
---
0.2999053+0.0707132-0.0662555
 ---
0.3111+0.0070-0.0140
 ---
M✶
(M⦿)
---
1.480000+0.318443-0.197887
 ---
1.524+0.069-0.068
 ---
log g
(log10(cm/s2))
---
4.0467000+0.0946354-0.0843527
 ---
4.0599+0.0096-0.0140
 4.05±0.09
Sp. T
--- --- --- F4 V ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
Transit
Source McLeod et al. 2017 Rubenzahl et al. 2024 Kokori et al. 2023 Ivshina & Winn 2022 Kokori et al. 2022 Maciejewski 2020 ExoFOP
a/R✶
5.138+0.038-0.078
 ---
5.14+0.04-0.08
 --- ---
4.36+0.11-0.09
 ---
Teq
(K)
2085+39-38
 --- --- --- --- --- 2281
b
0.102+0.100-0.071
 0.070±0.009 --- --- --- --- ---
S
(S⨁)
3152+242-220
 --- --- --- --- --- 4494.25
Mp
(M⨁)
375±35 --- --- --- --- --- ---
Mp
(MJup)
1.18±0.11 --- --- --- --- --- ---
Mp sin i
(M⨁)
375±35 --- --- --- --- --- ---
Mp sin i
(MJup)
1.18±0.11 --- --- --- --- --- ---
e
0 --- --- --- --- --- ---
i
(deg)
88.86+0.79-1.20
 ---
88.9+0.8-1.2
 --- ---
82.90+0.62-0.54
 ---
P
(days)
2.8717518±0.0000028 --- 2.8716995±0.0000012 2.87169867±0.00000085 2.8717023±0.0000019 2.8716992±0.0000013 2.8716983±0.0000067
ρ
(g/cm3)
0.377±0.040 --- --- --- --- --- ---
Rp
(R⨁)
17.60+0.47-0.40
 --- --- --- --- --- 18.126700±0.784303
Rp
(RJup)
1.570+0.042-0.036
 --- --- --- --- --- 1.6171586±0.0699709
Rp/R✶
0.08462±0.00091 --- 0.0846±0.0009 --- --- 0.0845±0.0005 ---
K
(m/s)
127±11 --- --- --- --- --- ---
a
(au)
0.04550+0.00067-0.00069
 --- --- --- --- --- ---
δ
(%)
0.716±0.015 --- --- --- --- 0.715±0.008 0.8568000±0.0196503
T14
(hours)
4.644+0.026-0.024
 --- --- --- ---
4.735+0.152-0.133
 4.668±0.361
TC
(days)
2457542.52504±0.00039
(BJD-TDB)
--- 2458676.84596±0.00024
(BJD-TDB)
2458714.17773±0.00011
(BJD-TDB)
2457838.3101±0.0004
(BJD-TDB)
2457542.52463±0.00057 2460419.9673320±0.0012422
(BJD)
λ
(deg)
--- -94.8±0.7 --- --- --- --- ---
ψ
(deg)
---
91.7+2.2-1.8
 --- --- --- --- ---
Print
RA
14h26m06.13s
Dec
+59d26m40.65s
Distance
310.286+4.665-4.532
pc
Parallax
3.1947200±0.0473945 mas
Ecliptic Latitude
65.56561 deg
Ecliptic Longitude
170.96436 deg
Galactic Latitude
53.80955 deg
Galactic Longitude
102.7139 deg
Total Proper Motion
20.7321859±0.0925839 mas/yr
Proper Motion (RA)
-19.6361000±0.0918005 mas/yr
Proper Motion (Dec)
6.6518500±0.0991491 mas/yr
Photometry
mV ---
mTESS 15.0429±0.6000
mJ ---
mH ---
mKs ---
mW1 ---
mW2 ---
mW3 ---
mW4 ---
mGaia 15.472900±0.004003
mB ---
mg ---
mi ---
mr ---
mz ---
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Known Objects
1 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
1 SuperWASP Time Series
1 Associated Literature Data
Known Objects
1 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
1 SuperWASP Time Series
1 Associated Literature Data
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