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GJ 15 Overview

  • Star: GJ 15 A
    • Stellar Radius: 0.39 Solar Radius
    • Stellar Effective Temperature: 3567.00 K
    • Planet: GJ 15 A b
      • Disposition Confirmed Controversial
    • Planet: GJ 15 A c
      • Disposition Confirmed
  • Star: LHS 4
    • Stellar Radius: 0.20 Solar Radius
    • Stellar Effective Temperature: 3259.00 K

GJ 15 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
GJ 15 A
GJ 15 A b 11.44 d > 3.03 M⨁ Radial Velocity 2014 Howard et al. 2014 Confirmed Planet
GJ 15 A c 7600 d > 36 M⨁ Radial Velocity 2018 Pinamonti et al. 2018 Confirmed Planet
LHS 4
GJ 15
  • This reference contains discussion regarding the stellar multiplicity of this system. (Pinamonti et al. 2018)
  • This reference contains discussion regarding the stellar multiplicity of this system. (Mugrauer 2019)
GJ 15 A
  • Some stellar parameter values may be biased due to companion blend (WDS Catalog)
LHS 4
  • Some stellar parameter values may be biased due to companion blend (WDS Catalog)
GJ 15 A b
RA
00h18m27.04s
Dec
+44d01m29.03s
Distance
3.56228±0.00055 pc
Parallax
280.690000±0.042903 mas
Ecliptic Latitude
37.92432 deg
Ecliptic Longitude
24.68593 deg
Galactic Latitude
-18.44687 deg
Galactic Longitude
116.69017 deg
Total Proper Motion
2920.7108710±0.0607014 mas/yr
Proper Motion (RA)
2891.5200000±0.0611275 mas/yr
Proper Motion (Dec)
411.9030000±0.0335658 mas/yr
Photometry
mV 8.09±0.10
mTESS 6.229±0.032
mJ 5.252±0.264
mH 4.476±0.200
mKs 4.018±0.020
mW1 ---
mW2 ---
mW3 ---
mW4 ---
mIc ---
mGaia 7.216200±0.000507
mB 9.616±0.024
Abundances
(Hypatia Catalog)
[Fe/H] -0.35±0.19 dex
[C/H] -0.26±0.22 dex
[O/H] -0.37±0.24 dex
[Na/H] -0.35±0.04 dex
[Mg/H] -0.18±0.16 dex
[Al/H] -0.35±0.08 dex
[Si/H] -0.38±0.13 dex
[Ca/H] -0.28±0.16 dex
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source Rosenthal et al. 2021 TICv8 Pinamonti et al. 2018 Gaia DR2 Turnbull 2015 Howard et al. 2014 Wright et al. 2004 Nordstrom et al. 2004 Nidever et al. 2002 Hawley et al. 1996
S Index
--- --- --- --- --- --- 0.606±0.079 --- --- ---
Teff
(K)
3742.6691981000±30.1902818895 --- 3607±68
3988.0+106.1-199.0
 3669 3567±11 --- --- --- ---
L✶
(log10(L⦿))
--- --- -1.655±0.112 ---
-1.699 +0.813-0.653
-1.663±0.004 --- --- --- ---
Metallicity
(dex)
-0.3910791845930000±0.0871913060209000 [Fe/H] --- -0.34±0.09 [Fe/H] --- --- -0.32±0.17 [Fe/H] --- --- --- ---
v sin i
(km/s)
--- --- 1.09±0.79 --- --- 1.45±0.6 --- 1 --- ---
M✶
(M⦿)
0.3996483438010000±0.0077844075198850 0.3986860±0.0202552 0.38±0.05 --- 0.38 0.375±0.057 --- --- --- ---
R✶
(R⦿)
0.37541069303600±0.00677483606139 0.4063990±0.0120867 0.38±0.05 --- 0.38 0.3863±0.0021 --- --- --- ---
log g
(log10(cm/s2))
4.88842248134000±0.00933107019045 4.820790±0.003757 4.87±0.04 --- --- 4.90±0.17 --- --- --- ---
Sp. T
--- --- M1 --- M1.5V M2 V --- --- --- M1
γ
(km/s)
--- --- --- 11.511069861442754±0.135930478781057 --- --- --- 11.3±0.1 11.8 ---
ρ✶
(g/cm3)
--- 8.3741145±0.3216603 --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Controversial
Detected By
Radial Velocity
Tools
Planetary Systems
Source Pinamonti et al. 2018 Rosenthal et al. 2021 Howard et al. 2014
ω
(deg)
55.0+49.0-74.0
5.0+50.0-54.0
 ---
Mp sin i
(M⨁)
3.03+0.46-0.44
 5.43±0.41 5.35±0.75
Mp sin i
(MJup)
0.00953+0.00145-0.00138
 0.0171±0.0013 0.0168±0.0024
e
0.0940+0.0910-0.0650
0.0750+0.0720-0.0520
 0
P
(days)
11.4407+0.0017-0.0016
 11.4432±0.0012 11.4433±0.0016
K
(m/s)
1.68+0.17-0.18
 2.85±0.22 2.94±0.28
a
(au)
0.072+0.003-0.004
0.07320+0.00047-0.00048
 0.0717±0.0034
TC
(days)
---
2455783.63+0.31-0.24
(BJD)
---
Teq
(K)
--- --- 550
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
Source Pinamonti et al. 2018
ω
(deg)
-58.40+100.80-53.30
Mp sin i
(M⨁)
36+25-18
Mp sin i
(MJup)
0.11+0.08-0.06
e
0.27+0.28-0.19
P
(days)
7600+2200-1700
K
(m/s)
2.5+1.3-1.0
a
(au)
5.4+1.0-0.9
Print
RA
00h18m29.94s
Dec
+44d01m43.31s
Distance
3.561060±0.000665 pc
Parallax
280.7870000±0.0518511 mas
Ecliptic Latitude
37.92338 deg
Ecliptic Longitude
24.69798 deg
Galactic Latitude
-18.4441 deg
Galactic Longitude
116.69981 deg
Total Proper Motion
2882.9887489±0.0690312 mas/yr
Proper Motion (RA)
2863.2800000±0.0693581 mas/yr
Proper Motion (Dec)
336.529000±0.038609 mas/yr
Photometry
mV 11.33±0.20
mTESS 8.3858700±0.0072629
mJ 6.789±0.024
mH 6.191±0.016
mKs 5.948±0.024
mW1 ---
mW2 ---
mW3 ---
mW4 ---
mIc 8.240±0.025
mGaia 9.677370±0.000753
mB 12.880±0.025
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
Stellar Hosts
Source TICv8 Wright et al. 2004 Nidever et al. 2002 Hawley et al. 1996 Duncan et al. 1991 Duncan et al. 1991
S Index
--- 1.191±0.155 --- --- 1.9610±1.7005 0.6130
γ
(km/s)
--- --- 11.0 --- --- ---
Sp. T
--- --- --- M3.5 --- ---
Teff
(K)
3259.0±157.0 --- --- --- --- ---
L✶
(log10(L⦿))
-2.4107+0.0986-0.1278
 --- --- --- --- ---
Metallicity
(dex)
-0.3745320±0.0130076 [M/H] --- --- --- --- ---
ρ✶
(g/cm3)
31.0553718±0.9695178 --- --- --- --- ---
M✶
(M⦿)
0.164568±0.020081 --- --- --- --- ---
R✶
(R⦿)
0.1954900±0.0059429 --- --- --- --- ---
log g
(log10(cm/s2))
5.0721600±0.0268458 --- --- --- --- ---
Print
Literature Stellar Spectra (5 Files)
File Type Spectrum Type Wavelength Category Reference
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Photometric Light Curve     147 Hp (Hipparcos) Hipparcos and Tycho Catalogs
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
  • System
  • Star
  • Confirmed
  • Candidate
  • False Positive Planet
  • Controversial
  • False Positive
  • Aliases
  • Data Access
  • Transit Prediction Service
  • Time Series
  • Kepler | K2
  • External Link
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