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TOI-270 Overview

TOI-270 0.38 R⦿ 3886.16 K
TOI-270 b
0.114 RJup
TOI-270 c
0.208 RJup
TOI-270 d
0.178 RJup
Architecture
TOI-270
TOI-270
TOI-270 b
TOI-270 c
TOI-270 d
Discovery Data
Host Planet Orbital Separation Planet Size Method Year Reference Disposition
TOI-270 TOI-270 b 3.36 d 1.28 R⨁ Transit 2019 Günther et al. 2019 Confirmed Planet
TOI-270 TOI-270 c 5.66 d 2.33 R⨁ Transit 2019 Günther et al. 2019 Confirmed Planet
TOI-270 TOI-270 d 11.38 d 2 R⨁ Transit 2019 Günther et al. 2019 Confirmed Planet
TOI-270 b TOI-270 c TOI-270 d
RA
04h33m39.86s
Dec
-51d57m26.62s
Distance
22.47930±0.01355 pc
Parallax
44.4565000±0.0265906 mas
Ecliptic Latitude
-71.89822 deg
Ecliptic Longitude
43.14225 deg
Galactic Latitude
-42.01396 deg
Galactic Longitude
259.77379 deg
Total Proper Motion
282.2188579±0.0506032 mas/yr
Proper Motion (RA)
82.9441000±0.0496865 mas/yr
Proper Motion (Dec)
-269.755000±0.050689 mas/yr
Photometry
mV
12.603±0.039
mTESS
10.4981000±0.0073581
mJ
9.099±0.032
mH
8.531±0.073
mKs
8.251±0.029
mW1
8.130±0.022
mW2
7.983±0.019
mW3
7.887±0.016
mW4
7.691±0.089
mGaia
11.630600±0.000476
mB
14.194±0.043
mg
13.391±0.020
mi
10.910±0.059
mr
12.011±0.020
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Coulombe et al. 2025 Mikal-Evans et al. 2023 Kaye et al. 2022 Van Eylen et al. 2021 TICv8 Günther et al. 2019 Gaia DR2 ExoFOP-TESS TOI ExoFOP-TESS TOI ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
Teff
(K)
3506±70 --- 3506±70 3506±70 3532.0±157.0
3386+137-131
3886.155+173.572-97.435
 3551±74 3551±74 3551±74
L✶
(log10(L⦿))
--- --- ---
-1.71+0.04-0.04
-1.70665+0.09358-0.11945
-1.8+0.0-0.1
 --- --- --- ---
Metallicity
(dex)
--- --- --- -0.20±0.12 [Fe/H] --- -0.17±0.10 [Fe/H] --- --- --- ---
ρ✶
(g/cm3)
11.30+0.29-0.32
 --- 10.63±0.74 7.20±0.63 9.73511850±0.34589380
10.5+1.4-2.2
 --- --- --- ---
M✶
(M⦿)
--- --- 0.386±0.008 0.386±0.008 0.362274±0.020491 0.40±0.02 --- --- --- ---
R✶
(R⦿)
0.380±0.008 0.380 0.380±0.008 0.378±0.011 0.3743580±0.0114957 0.38±0.02 --- 0.374357998371124±0.011495700000000 0.374357998371124±0.011495700000000 0.374357998371124±0.011495700000000
Sp. T
--- M3 V --- M --- M3.0 V --- --- --- ---
log g
(log10(cm/s2))
--- --- 4.872±0.026 4.872±0.026 4.8505300±0.0020899 --- --- 4.839820±0.382963 4.839820±0.382963 4.839820±0.382963
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
Transit
Atmospheric Spectroscopy
Source Kaye et al. 2022 Coulombe et al. 2025 Kokori et al. 2023 Van Eylen et al. 2021 Günther et al. 2019 ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
a/R✶
17.108+3.526-1.858
19.09+0.33-0.69
17.48+1.49-3.24
 ---
17.48+1.49-3.24
 ---
i
(deg)
---
89.41+0.40-0.43
88.65+0.85-1.40
 89.39±0.37
88.65+0.85-1.40
 ---
P
(days)
3.35992±0.00005 --- 3.360156±0.000012 3.3601538±0.0000048
3.360080+0.000065-0.000070
 3.36013770677629±0.00000860667700
Rp/R✶
0.0307+0.0012-0.0009
 0.03144±0.00010 0.0300±0.0015 0.02920±0.00069
0.0300+0.0015-0.0011
 ---
TC
(days)
2458461.01464+0.00084-0.00093
(BJD)
2460222.240084±0.000035
(BJD)
2458891.1154±0.0013
(BJD-TDB)
2458387.09505±0.00074
(BJD-TDB)
2458461.01464+0.00084-0.00093
(BJD-TDB)
2458383.73321400±0.00070846
(BJD)
Teq
(K)
600±16
569+14-13
 --- 581±14
528+56-32
 538.859382548355
b
0.48±0.46 0.20±0.13 --- 0.19±0.12 0.41±0.26 ---
Mp
(M⨁)
1.48±0.18 1.48±0.18 --- 1.58±0.26 --- ---
Mp
(MJup)
0.00466±0.00057 0.00466±0.00057 --- 0.00497±0.00082 --- ---
e
0.0167+0.0084-0.0089
 --- --- 0.034±0.025 0 ---
ρ
(g/cm3)
3.89±0.66 3.7±0.5 --- 4.97±0.94 --- ---
Rp
(R⨁)
1.28+0.05-0.04
 1.306±0.028 --- 1.206±0.039
1.247+0.089-0.083
 1.18437182711947±0.73766700000000
Rp
(RJup)
0.114+0.004-0.004
 0.1165±0.0025 --- 0.1076±0.0035
0.1112+0.0079-0.0074
 0.105662759069562±0.065810355084294
T14
(hours)
1.294±0.026 --- --- ---
1.387+0.040-0.034
 1.41324497169953±0.30529118000000
ω
(deg)
--- --- --- 0.00±103.00 --- ---
K
(m/s)
--- --- --- 1.27±0.21 --- ---
a
(au)
---
0.03362+0.00099-0.00128
 --- 0.03197±0.00022
0.0306+0.0033-0.0057
 ---
S
(S⨁)
--- --- --- --- --- 19.9261226089862
δ
(%)
--- --- --- ---
0.0901+0.0092-0.0066
 0.0972958936281263±0.0058786633000000
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit, Transit Timing Variations
Tools
Planetary Systems
Transit Prediction Service
TOI
Transit
Atmospheric Spectroscopy
Source Kaye et al. 2022 Kokori et al. 2023 Van Eylen et al. 2021 Günther et al. 2019 ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
a/R✶
25.569±0.306
27.01+0.60-1.58
 ---
27.01+0.60-1.58
 ---
i
(deg)
---
89.53+0.30-0.42
 89.36±0.24
89.53+0.30-0.42
 ---
P
(days)
5.66051±0.00004 5.6605746±0.0000046 5.6605731±0.0000031 5.660172±0.000035 5.66056931603069±0.00000385838100
Rp/R✶
0.0560±0.0017 0.05825±0.00079 0.05701±0.00071
0.05825+0.00079-0.00058
 ---
TC
(days)
2458463.08056±0.00040
(BJD)
2458734.79487±0.00029
(BJD-TDB)
2458389.50285±0.00029
(BJD-TDB)
2458463.08481±0.00025
(BJD-TDB)
2459198.9614540±0.0005277
(BJD)
Teq
(K)
489±11 --- 488±12
424+20-19
 452.870922604814
S
(S⨁)
--- --- --- --- 9.94074078795448
Rp
(R⨁)
2.33±0.01 --- 2.355±0.064 2.42±0.13 2.40708723087558±0.11973171000000
Rp
(RJup)
0.208±0.001 --- 0.2101±0.0057 0.216±0.012 0.214746308812502±0.010681766094931
δ
(%)
--- --- ---
0.3394+0.0094-0.0068
 0.385610608521182±0.006609782000000
T14
(hours)
1.682±0.019 --- ---
1.658+0.015-0.012
 1.66317040312773±0.05289611600000
b
0.35±0.06 --- 0.28±0.11
0.22+0.17-0.14
 ---
Mp
(M⨁)
6.20±0.31 --- 6.15±0.37 --- ---
Mp
(MJup)
0.0195±0.0010 --- 0.0194±0.0012 --- ---
e
0.0044+0.0005-0.0006
 --- 0.027±0.021 0 ---
ρ
(g/cm3)
2.70±0.14 --- 2.60±0.26 --- ---
ω
(deg)
--- --- 10±90 --- ---
K
(m/s)
--- --- 4.16±0.24 --- ---
a
(au)
--- --- 0.04526±0.00031
0.0472+0.0030-0.0033
 ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit, Transit Timing Variations
Tools
Planetary Systems
Transit Prediction Service
TOI
Transit
Atmospheric Spectroscopy
Source Kaye et al. 2022 Mikal-Evans et al. 2023 Kokori et al. 2023 Van Eylen et al. 2021 Günther et al. 2019 ExoFOP-TESS TOI Show Candidate Solutions >> << Hide Candidate Solutions
a/R✶
41.744±0.527
41.80+0.61-0.59
41.56+0.70-0.83
 ---
41.56+0.70-0.83
 ---
b
0.23±0.08
0.233+0.089-0.085
 --- 0.19±0.11
0.224+0.083-0.110
 ---
e
0.0066±0.0020 0 --- 0.032±0.023 0 ---
i
(deg)
--- 89.68±0.12
89.69+0.16-0.12
 89.73±0.16
89.69+0.16-0.12
 ---
P
(days)
11.38194±0.00011 11.38014 11.379568±0.000012 11.379573±0.000013
11.38014+0.00011-0.00010
 11.3795653396307±0.0000151483900
Rp
(R⨁)
2.00±0.05 2.19±0.07 --- 2.133±0.058 2.13±0.12 2.25394644828569±0.10260336000000
Rp
(RJup)
0.178±0.004 0.195±0.006 --- 0.1903±0.0052 0.190±0.011 0.201083979766839±0.009153674428220
Rp/R✶
0.0491±0.0016
0.05278+0.00095-0.00118
 0.05143±0.00074 0.05163±0.00069 0.05143±0.00074 ---
δ
(%)
---
0.2786+0.0101-0.0124
 --- --- 0.2645±0.0078 0.31470461739044±0.00761777340000
TC
(days)
2458469.33823±0.00032
(BJD)
2459129.34868+0.00691-0.00544
(JD-UTC)
2458776.58464±0.00037
(BJD-TDB)
2458389.68186±0.00059
(BJD-TDB)
2458469.33834+0.00052-0.00046
(BJD-TDB)
2458389.67933600±0.00058492
(BJD)
Teq
(K)
383±9 --- --- 387±10 340±14 358.827662999979
S
(S⨁)
--- --- --- --- --- 3.91800213353912
T14
(hours)
2.117±0.018 --- --- --- 2.148±0.018 2.23503053745909±0.07614999000000
Mp
(M⨁)
4.20±0.16 --- --- 4.78±0.43 --- ---
Mp
(MJup)
0.0132±0.0005 --- --- 0.0150±0.0014 --- ---
ρ
(g/cm3)
2.90±0.24 --- --- 2.72±0.33 --- ---
ω
(deg)
--- --- --- -6.0±90.0 --- ---
K
(m/s)
--- --- --- 2.56±0.23 --- ---
a
(au)
--- --- --- 0.07210±0.00050 0.0733±0.0042 ---
Print
Known Objects
3 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
4 KELT Time Series
3 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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