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GJ 3473 Overview

  • Star: GJ 3473
    • Stellar Radius: 0.36 Solar Radius
    • Stellar Effective Temperature: 3822.26 K
    • Planet: GJ 3473 b
      • Disposition Confirmed
      • Planet Radius 0.113 Jupiter Radius
    • Planet: GJ 3473 c
      • Disposition Confirmed
  • Star: LP 544-12
    • Stellar Radius: 0.14 Solar Radius
    • Stellar Effective Temperature: 3285.75 K

GJ 3473 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
GJ 3473
GJ 3473 b 1.2 d 1.26 R⨁ Transit 2020 Kemmer et al. 2020 Confirmed Planet
GJ 3473 c 15.51 d > 7.41 M⨁ Radial Velocity 2020 Kemmer et al. 2020 Confirmed Planet
LP 544-12
GJ 3473
  • This reference contains discussion regarding the stellar multiplicity of this system. (Kemmer et al. 2020)
RA
08h02m22.47s
Dec
+03d20m13.79s
Distance
27.3644±0.0376 pc
Parallax
36.5150000±0.0498293 mas
Ecliptic Latitude
-16.76322 deg
Ecliptic Longitude
122.04427 deg
Galactic Latitude
17.28798 deg
Galactic Longitude
218.15071 deg
Total Proper Motion
554.7223327±0.0704113 mas/yr
Proper Motion (RA)
-403.1680000±0.0856354 mas/yr
Proper Motion (Dec)
-381.0150000±0.0479354 mas/yr
Photometry
mV 13.740±0.027
mTESS 11.1972000±0.0073095
mJ 9.627±0.023
mH 9.063±0.022
mKs 8.829001±0.024000
mW1 8.671±0.023
mW2 8.506±0.019
mW3 8.385±0.024
mW4 8.347±0.294
mGaia 12.465000±0.000343
mB 15.241±0.053
mg 15.4319000±0.0057415
mi 11.9009000±0.0007628
mr 13.291200±0.002163
mu 16.8950000±0.0083254
mz 11.4704000±0.0040229
Abundances
(Hypatia Catalog)
[Fe/H] -0.20±0.04 dex
[Mg/H] -0.18±0.07 dex
[Si/H] -0.41±0.05 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
TOI
Stellar Hosts
Source Kemmer et al. 2020 TICv8 Gaia DR2 Hawley et al. 1996 ExoFOP
Teff
(K)
3347±54 3329.0±157.0
3822.2551+125.4949-137.2983
 --- 3332±63
Sp. T
--- --- --- M4 ---
L✶
(log10(L⦿))
-1.824+0.005-0.006
-1.85675+0.09707-0.12520
 --- --- ---
Metallicity
(dex)
0.11±0.19 [Fe/H] --- --- --- ---
γ
(km/s)
-1.101±0.011 --- --- --- ---
v sin i
(km/s)
<2 --- --- --- ---
ρ✶
(g/cm3)
10.93+0.66-0.69
 10.7392391±0.3296907 --- --- ---
M✶
(M⦿)
0.360±0.016 0.3394400±0.0203209 --- --- ---
R✶
(R⦿)
0.364±0.012 0.3545290±0.0107089 --- --- 0.354528993368149±0.010708900000000
log g
(log10(cm/s2))
4.81±0.06 4.8695300±0.0003832 --- --- 4.915280±0.142281
Prot
(days)
168.3±4.2 --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
TOI
Transit
NExoList: JWST
Atmospheric Spectroscopy
Source Kemmer et al. 2020 Holmberg et al. 2026 ExoFOP
a/R✶
9.39+0.19-0.21
9.32+0.18-0.19
 ---
Teq
(K)
773+16-15
 --- 704.63268834696
b
0.336+0.066-0.074
0.300+0.055-0.060
 ---
S
(S⨁)
59.4+5.0-4.5
 --- 58.2602236868205
Mp
(M⨁)
1.86±0.30 --- ---
Mp
(MJup)
0.00585±0.00094 --- ---
e
0 --- ---
i
(deg)
87.95+0.47-0.45
88.16+0.38-0.36
 ---
P
(days)
1.1980035+0.0000018-0.0000019
1.19800484+0.00000053-0.00000052
 1.19799956041588±0.00000625382700
ρ
(g/cm3)
5.03+1.07-0.93
 --- ---
Rp
(R⨁)
1.264+0.050-0.049
 --- 1.21073387620264±1.10587860000000
Rp
(RJup)
0.1128+0.0045-0.0044
 --- 0.108014627610398±0.098660050329108
Rp/R✶
0.03184+0.00069-0.00067
 0.03220±0.00055 ---
K
(m/s)
2.21±0.35 --- ---
a
(au)
0.01589±0.00062 --- ---
T14
(hours)
0.950+0.015-0.014
 --- 0.968200339556040±0.306451230000000
TC
(days)
2458492.20408+0.00043-0.00042
(BJD)
2458492.20415+0.00039-0.00042
(BJD)
2458492.20582900±0.00066091
(BJD)
δ
(%)
--- --- 0.115031772968271±0.009333179500000
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Kemmer et al. 2020
Teq
(K)
329.1+6.6-6.4
S
(S⨁)
1.95+0.17-0.15
Mp sin i
(M⨁)
7.41+0.91-0.86
Mp sin i
(MJup)
0.0233+0.0029-0.0027
e
0
P
(days)
15.509±0.033
K
(m/s)
3.75+0.45-0.42
a
(au)
0.0876+0.0035-0.0034
Print
RA
08h02m20.23s
Dec
+03d19m37.64s
Distance
27.48300±0.09555 pc
Parallax
36.357900±0.125539 mas
Ecliptic Latitude
-16.775 deg
Ecliptic Longitude
122.037 deg
Galactic Latitude
17.27511 deg
Galactic Longitude
218.15556 deg
Total Proper Motion
551.7692419±0.1770878 mas/yr
Proper Motion (RA)
-399.366000±0.214787 mas/yr
Proper Motion (Dec)
-380.731000±0.122903 mas/yr
Photometry
mV 17.77±0.20
mTESS 14.3196000±0.0079696
mJ 12.224±0.024
mH 11.695±0.027
mKs 11.371±0.024
mW1 15.284±0.123
mW2 14.988±0.151
mW3 12.028
mW4 8.891
mGaia 15.947100±0.000781
mB 20.361±0.174
mg ---
mi ---
mr ---
mu ---
mz ---
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source TICv8 Gaia DR2 Hawley et al. 1996
Teff
(K)
2832.0±157.0
3285.75+61.25-5.75
 ---
Sp. T
--- --- M6
L✶
(log10(L⦿))
-2.9692+0.1085-0.1449
 --- ---
ρ✶
(g/cm3)
61.5947471±5.6952753 --- ---
M✶
(M⦿)
0.110154±0.020023 --- ---
R✶
(R⦿)
0.1361050±0.0040842 --- ---
log g
(log10(cm/s2))
5.212320±0.053758 --- ---
Print
Known Objects
2 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
2 Associated Literature Data
Known Objects
2 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
2 Associated Literature Data
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