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LTT 1445 Overview

  • Star: LTT 1445 B
    • Stellar Radius: 0.24 Solar Radius
  • Star: LTT 1445 C
    • Stellar Radius: 0.20 Solar Radius
  • Star: LTT 1445 A
    • Stellar Radius: 0.28 Solar Radius
    • Stellar Effective Temperature: 3562.00 K
    • Planet: LTT 1445 A c
      • Disposition Confirmed
      • Planet Radius 0.102 Jupiter Radius
    • Planet: LTT 1445 A b
      • Disposition Confirmed
      • Planet Radius 0.120 Jupiter Radius

LTT 1445 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
LTT 1445 B
LTT 1445 C
LTT 1445 A
LTT 1445 A c 3.12 d 1.15 R⨁ Transit 2022 Winters et al. 2022 Confirmed Planet
LTT 1445 A b 5.36 d 1.34 R⨁ Transit 2019 Winters et al. 2019 Confirmed Planet
LTT 1445
  • This reference contains discussion regarding the stellar multiplicity of this system. (Winters et al. 2019)
LTT 1445 A
  • Some stellar parameter values may be biased due to companion blend (WDS Catalog)
RA
03h01m51.08s
Dec
-16d35m30.67s
Distance
17.94686 pc
Parallax
---
Ecliptic Latitude
-32.25696 deg
Ecliptic Longitude
37.35574 deg
Galactic Latitude
-58.07432 deg
Galactic Longitude
200.48285 deg
Total Proper Motion
432.6014332±8.0000000 mas/yr
Proper Motion (RA)
-338.0±8.0 mas/yr
Proper Motion (Dec)
-270.0±8.0 mas/yr
Photometry
mV 10.6±0.2
mTESS 8.554±0.058
mJ 7.110±0.019
mH 6.56±0.02
mKs 6.285±0.020
mW1 ---
mW2 ---
mW3 ---
mW4 ---
mIc ---
mGaia ---
mB ---
mg ---
mi ---
mr ---
mu ---
mz ---
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source Winters et al. 2019 TICv8
M✶
(M⦿)
0.215±0.014 0.3741010±0.0562906
R✶
(R⦿)
0.236±0.027 0.384692±0.047432
ρ✶
(g/cm3)
--- 9.26434930±2.08007180
log g
(log10(cm/s2))
--- 4.8408300±0.0417957
Print
RA
---
Dec
---
Distance
---
Parallax
---
Ecliptic Latitude
---
Ecliptic Longitude
---
Galactic Latitude
---
Galactic Longitude
---
Total Proper Motion
---
Proper Motion (RA)
---
Proper Motion (Dec)
---
Photometry
mV ---
mTESS ---
mJ ---
mH ---
mKs ---
mW1 ---
mW2 ---
mW3 ---
mW4 ---
mIc ---
mGaia ---
mB ---
mg ---
mi ---
mr ---
mu ---
mz ---
Tools
Planetary Systems
Stellar Hosts
Source Winters et al. 2019
M✶
(M⦿)
0.161±0.014
R✶
(R⦿)
0.197±0.027
Print
RA
03h01m50.99s
Dec
-16d35m40.18s
Distance
6.869290±0.003805 pc
Parallax
145.5470000±0.0800058 mas
Ecliptic Latitude
-32.25934 deg
Ecliptic Longitude
37.35434 deg
Galactic Latitude
-58.07573 deg
Galactic Longitude
200.48712 deg
Total Proper Motion
456.5121099±0.1425326 mas/yr
Proper Motion (RA)
-369.196000±0.140193 mas/yr
Proper Motion (Dec)
-268.510000±0.146854 mas/yr
Photometry
mV 10.590±0.046
mTESS 8.8429400±0.0078993
mJ 7.294±0.024
mH 6.774±0.038
mKs 6.496±0.021
mW1 6.405±0.342
mW2 6.149±0.107
mW3 6.106±0.023
mW4 5.959±0.056
mIc ---
mGaia 10.046900±0.001234
mB 12.304±0.048
mg 15.3786000±0.0119816
mi 9.3169000±0.0008559
mr 10.6150000±0.0007149
mu 15.7983000±0.0069061
mz 11.0226000±0.0083714
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Pass et al. 2023 Lavie et al. 2023 Oddo et al. 2023 Winters et al. 2022 Winters et al. 2019 TICv8 Gaia DR2 Turnbull 2015 Hawley et al. 1996 ExoFOP
Teff
(K)
--- --- 3340±150 3340±150 3337±150 3384.0±157.0
3785.0203+253.8297-222.0703
 3697 --- 3562±83
R✶
(R⦿)
0.271+0.019-0.010
 0.276±0.010 0.265±0.011
0.265+0.011-0.010
0.276+0.024-0.019
 0.2759530±0.0082828 --- 0.24 --- 0.275952994823456±0.008282760000000
log g
(log10(cm/s2))
--- --- --- ---
4.967+0.061-0.075
 4.9533600±0.0090908 --- --- --- 4.973890±0.060229
Metallicity
(dex)
--- --- -0.34±0.09 [Fe/H] -0.34±0.09 [Fe/H] -0.34±0.08 [Fe/H] --- --- --- --- ---
M✶
(M⦿)
0.257±0.014 0.249±0.023 0.257±0.014 0.257±0.014 0.256±0.014 0.2494390±0.0201557 --- 0.30 --- ---
Sp. T
--- --- M3.0 --- --- --- --- M2.5V M3 ---
L✶
(log10(L⦿))
--- --- --- --- ---
-2.04591+0.09585-0.12318
 ---
-2.000 +1.000-0.903
--- ---
γ
(km/s)
--- --- --- --- -5.4323±0.0021 --- --- --- --- ---
v sin i
(km/s)
--- --- --- --- <3.4 --- --- --- --- ---
ρ✶
(g/cm3)
--- --- --- --- 17.3±3.9 16.7349201±0.1518594 --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
Transit
NExoList: JWST
Source Winters et al. 2022 Pass et al. 2023 Lavie et al. 2023
Teq
(K)
508±25
516+28-27
 ---
b
0.937+0.012-0.016
0.937+0.012-0.011
 ---
S
(S⨁)
10.9+2.4-2.0
11.7+2.7-2.3
 ---
Mp
(M⨁)
1.54+0.20-0.19
 1.37±0.19 1.00±0.19
Mp
(MJup)
0.00485+0.00063-0.00060
 0.00431±0.00060 0.00315±0.00060
i
(deg)
87.43+0.18-0.29
87.46+0.13-0.21
86.63+0.39-0.47
P
(days)
3.1239035+0.0000034-0.0000036
3.1238994+0.0000031-0.0000033
 3.123898±0.000003
ρ
(g/cm3)
5.57+0.68-0.60
5.9+1.8-1.5
 ---
Rp
(R⨁)
1.147+0.055-0.054
1.07+0.10-0.07
1.60+0.67-0.34
Rp
(RJup)
0.1023+0.0049-0.0048
0.0955+0.0089-0.0062
0.143+0.060-0.030
Rp/R✶
0.0396+0.0018-0.0017
0.0362+0.0019-0.0016
0.05792+0.01974-0.01188
K
(m/s)
1.67+0.21-0.20
 1.48±0.20 1.13±0.18
a
(au)
0.02661+0.00047-0.00049
0.02659+0.00047-0.00049
 0.0226±0.0040
δ
(%)
0.157+0.015-0.014
0.1104+0.0076-0.0072
 ---
T14
(hours)
0.482±0.026
0.5042+0.0218-0.0211
 ---
TC
(days)
2458412.58159+0.00059-0.00057
(BJD-TDB)
2458412.58218+0.00078-0.00074
(BJD)
2458425.078182+0.000472-0.000450
(BJD)
a/R✶
21.56+0.78-0.82
 --- ---
e
<0.223 ---
0.05+0.05-0.03
ω
(deg)
--- ---
163+136-108
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
Transit
NExoList: JWST
Atmospheric Spectroscopy
Source Pass et al. 2023 Lavie et al. 2023 Kokori et al. 2023 Oddo et al. 2023 Winters et al. 2022 Winters et al. 2019 ExoFOP
a/R✶
---
24.40+2.21-2.09
29.6+2.6-2.5
 29.963±3.128
30.9+1.1-1.2
29.6+2.6-2.5
 ---
Teq
(K)
431±23 --- --- 555±48 424±21
433+28-27
 403.740154057577
b
0.25+0.18-0.17
 --- --- 0.8400±0.2220
0.17+0.15-0.12
0.29+0.23-0.20
 ---
ω
(deg)
---
244+15-18
221.0+120.0-76.0
 --- ---
-139+120-76
 ---
Mp
(M⨁)
2.73+0.25-0.23
 2.32±0.25 --- ---
2.87+0.26-0.25
2.2+1.7-2.1
 ---
Mp
(MJup)
0.00859+0.00079-0.00072
 0.00730±0.00079 --- ---
0.00903+0.00082-0.00079
0.0069+0.0053-0.0066
 ---
e
---
0.18+0.07-0.06
0.19+0.35-0.14
 --- <0.110
0.19+0.35-0.14
 ---
i
(deg)
89.53+0.33-0.40
88.95+0.64-0.57
89.40+0.41-0.46
 89.203±0.658
89.68+0.22-0.29
89.40+0.41-0.46
 ---
P
(days)
5.3587635+0.0000044-0.0000045
 5.358765±0.000003 5.358777±0.000011 5.35876±0.00001
5.3587657+0.0000043-0.0000042
5.35882+0.00030-0.00031
 5.35877595248221±0.00000754897100
ρ
(g/cm3)
6.2+1.2-1.3
 4.36±0.74 --- ---
7.1+1.2-1.1
4.4+4.0-4.2
 ---
Rp
(R⨁)
1.34+0.11-0.06
 1.43±0.09 --- 1.18±0.06
1.305+0.066-0.061
1.38+0.13-0.12
 1.44541540651259±0.29846486000000
Rp
(RJup)
0.120+0.010-0.005
 0.128±0.008 --- 0.105±0.005
0.1164+0.0059-0.0054
0.123+0.012-0.011
 0.128951547442007±0.026627297163604
Rp/R✶
0.0454±0.0012
0.04618+0.00085-0.00086
 0.0458±0.0012 0.0408±0.0010
0.0451+0.0014-0.0013
0.0458+0.0012-0.0011
 ---
K
(m/s)
2.47±0.20 2.24±0.18 --- --- 2.60±0.21
2.1+1.6-2.0
 ---
a
(au)
0.03810+0.00067-0.00070
0.032+0.006-0.003
 --- 0.022±0.003
0.03813+0.00068-0.00070
0.03807+0.00068-0.00071
 ---
δ
(%)
0.230±0.011 --- --- 0.1665±0.0082 0.203±0.012 0.2498±0.0168 0.27084393715462±0.01327808700000
T14
(hours)
1.366+0.019-0.018
 --- --- 1.392±0.133
1.367+0.017-0.016
 1.38±0.03 1.369776439469±0.147485540000
TC
(days)
2458412.70910+0.00047-0.00046
(BJD-TDB)
2458423.426378+0.000299-0.000304
(BJD)
2458905.71556±0.00071
(BJD-TDB)
2459152.2189±0.0005
(BJD)
2458412.70851+0.00040-0.00039
(BJD-TDB)
2458423.42629+0.00044-0.00045
(BJD-TDB)
2459168.2952740±0.0007279
(BJD)
S
(S⨁)
5.7+1.3-1.1
 --- --- ---
5.4+1.2-1.0
 --- 6.27955370949943
Print
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Photometric Light Curve     94 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
2 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
2 Associated Literature Data
Known Objects
2 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
2 Associated Literature Data
Known Objects
2 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
2 Associated Literature Data
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