GJ 338 Overview

GJ 338 A 0.54 R⦿ 3867.00 K
GJ 338 B 0.57 R⦿ 3995.02 K
GJ 338 B b
Architecture
GJ 338
GJ 338 A
GJ 338 B
GJ 338 B b
Discovery Data
Host Planet Method Year Reference Detection
GJ 338 B GJ 338 B b Radial Velocity 2020 González-Álvarez et al. 2020 Radial Velocity
GJ 338 GJ 338 A
  • Some stellar parameter values may be biased due to companion blend (WDS Catalog)
GJ 338 B
RA
09h14m20.14s
Dec
+52d41m02.97s
Distance
6.33278±0.00148 pc
Parallax
157.8800000±0.0366278 mas
Ecliptic Latitude
34.76625 deg
Ecliptic Longitude
123.605 deg
Galactic Latitude
42.6675 deg
Galactic Longitude
164.9355 deg
Total Proper Motion
1647.5226105±0.0589804 mas/yr
Proper Motion (RA)
-1546.1000000±0.0588578 mas/yr
Proper Motion (Dec)
-569.1270000±0.0598776 mas/yr
Photometry
mV
7.64±0.10
mTESS
5.941±0.037
mJ
4.889±0.037
mH
3.987±0.188
mKs
3.988±0.036
Source TICv8 (TIC v6) Turnbull 2015 Takeda et al. 2007 Wright et al. 2004 Nordstrom et al. 2004 Nidever et al. 2002 Duncan et al. 1991 Cannon & Pickering 1918
Teff
(K)
--- 3867 --- --- --- --- --- ---
L
(log10(L⦿))
---
-1.097 +0.352-0.602
--- --- --- --- --- ---
M
(M⦿)
0.5725210±0.0239446 0.58
0.576+0.012-0.016
--- --- --- --- ---
R
(R⦿)
0.5812580±0.0229022 0.54 0.54±0.02 --- --- --- --- ---
log g
(log10(cm/s2))
4.6671200±0.0160669 4.74 4.74±0.02 --- --- --- --- ---
Sp. T
--- M0.0V --- --- --- --- --- K2
γ
(km/s)
--- --- --- --- 10.5±0.1 11.1 --- ---
v sin i
(km/s)
--- --- --- --- 2 --- --- ---
Age
(Gyr)
--- --- <0.48 --- --- --- --- ---
ρ
(g/cm3)
4.1100807±0.3148438 --- --- --- --- --- --- ---
S Index
--- --- --- 1.785±0.232 --- --- 2.1126 ---
RA
09h14m22.00s
Dec
+52d41m00.68s
Distance
6.332560±0.001675 pc
Parallax
157.8850000±0.0414295 mas
Ecliptic Latitude
34.76777 deg
Ecliptic Longitude
123.6105 deg
Galactic Latitude
42.67227 deg
Galactic Longitude
164.9346 deg
Total Proper Motion
1706.0088713±0.0607681 mas/yr
Proper Motion (RA)
-1573.1200000±0.0613109 mas/yr
Proper Motion (Dec)
-660.1210000±0.0575884 mas/yr
Photometry
mV
7.7±0.1
mTESS
6.046±0.032
mJ
4.779±0.174
mH
4.043±0.206
mKs
4.136±0.020
Source González-Álvarez et al. 2020 TICv8 (TIC v6) Gaia DR2 Turnbull 2015 Takeda et al. 2007 Wright et al. 2004 Nordstrom et al. 2004 Pizzolato et al. 2003 Nidever et al. 2002 Duncan et al. 1991 Cannon & Pickering 1918
Teff
(K)
4005±51 ---
3995.0151+118.5149-102.1201
3841 --- --- --- --- --- --- ---
L
(log10(L⦿))
-1.10+0.02-0.02
---
-1.120797+0.000241-0.000241
-1.097 +0.352-0.602
--- --- --- --- --- --- ---
γ
(km/s)
11.798±0.001 --- 11.979391137538494±0.177366467144935 --- --- --- 11.9±0.1 --- 12.5 --- ---
R
(R⦿)
0.58±0.03 0.5856320±0.0173265
0.5744036+0.0305313-0.0326215
0.53 0.53±0.02 --- --- --- --- --- ---
M
(M⦿)
0.64±0.07 0.5762050±0.0202405 --- 0.55
0.554+0.018-0.002
--- --- --- --- --- ---
log g
(log10(cm/s2))
4.68±0.07 4.6633900±0.0104437 --- 4.76
4.76+0.01-0.02
--- --- --- --- --- ---
Sp. T
M0.0 V --- --- K7.0V --- --- --- --- --- --- K2
Metallicity
(dex)
-0.030±0.160 [Fe/H] --- --- --- --- --- --- --- --- --- ---
v sin i
(km/s)
2.3±1.5 --- --- --- --- --- 3 --- --- --- ---
Age
(Gyr)
4±3 --- --- --- <0.40 --- --- --- --- --- ---
Prot
(days)
16.61±0.04 --- --- --- --- --- --- <10.17 --- --- ---
ρ
(g/cm3)
--- 4.0445379±0.2172119 --- --- --- --- --- --- --- --- ---
S Index
--- --- --- --- --- 1.879±0.244 --- --- --- 1.9546 ---
Status
Confirmed
Tools
Source González-Álvarez et al. 2020
Tp
(days)
2457517.06+6.15-4.72
Teq
(K)
391±20
ω
(deg)
204.3+94.4-70.0
Mp sin i
(M)
10.27+1.47-1.38
Mp sin i
(MJup)
0.03231+0.00463-0.00434
e
0.11+0.11-0.08
P
(days)
24.45±0.02
K
(m/s)
3.07±0.37
a
(au)
0.141±0.005
Known Objects
1 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
2 SuperWASP Time Series
1 Associated Literature Data
Known Objects
1 Confirmed Planets
2 2MASS Point Source Catalog
Data Files
2 SuperWASP Time Series
1 Associated Literature Data
System
Star
Confirmed
Candidate
Refuted
Controversial
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
External Link
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