GJ 687 Overview

GJ 687 0.42 R⦿ 3413.00 K
GJ 687 b
GJ 687 c
Architecture
GJ 687
GJ 687
GJ 687 b
GJ 687 c
Discovery Data
Host Planet Method Year Reference Disposition
GJ 687 GJ 687 b Radial Velocity 2014 Burt et al. 2014 Confirmed Planet
GJ 687 GJ 687 c Radial Velocity 2020 Feng et al. 2020 Confirmed Planet
GJ 687
  • Some stellar parameter values may be biased due to companion blend (WDS Catalog)
RA
17h36m25.00s
Dec
+68d20m01.23s
Distance
4.54939±0.00068 pc
Parallax
219.7810000±0.0324099 mas
Ecliptic Latitude
87.12854 deg
Ecliptic Longitude
139.20392 deg
Galactic Latitude
31.96608 deg
Galactic Longitude
98.59611 deg
Total Proper Motion
1309.3944652±0.0709512 mas/yr
Proper Motion (RA)
-320.6360000±0.0737524 mas/yr
Proper Motion (Dec)
-1269.5300000±0.0707688 mas/yr
Photometry
mV
9.15±0.10
mTESS
6.848±0.032
mJ
5.335±0.021
mH
4.766±0.033
mKs
4.548±0.021
mW1
4.398±0.268
mW2
3.333±0.107
mW3
4.205±0.015
mW4
4.061±0.023
mIc
6.670±0.025
mGaia
8.027540±0.000862
mB
10.617±0.046
Source Rosenthal et al. 2021 Feng et al. 2020 TICv8 Gaia DR2 Stassun et al. 2017 Turnbull 2015 Burt et al. 2014 Wright et al. 2004 Nidever et al. 2002 Hawley et al. 1996 Duncan et al. 1991
S Index
--- --- --- --- --- --- --- 0.771±0.100 --- --- 0.8591
Teff
(K)
3561.302521950000±41.823878891000 --- ---
3825.530+165.880-222.733
3340±97 3428 3413±28 --- --- --- ---
L
(log10(L⦿))
--- --- --- --- ---
-1.699 +0.740-0.544
-1.672±0.005 --- --- --- ---
M
(M⦿)
0.4178338220330±0.0090768594303 0.40±0.02 0.3985610±0.0202864 --- 0.45±0.07 0.38 0.413±0.041 --- --- --- ---
R
(R⦿)
0.397370525233000±0.007927369323905 --- 0.4062880±0.0121249 --- 0.43±0.03 0.42 0.4183±0.0070 --- --- --- ---
Sp. T
--- --- --- --- --- M3.0V M3 V --- --- M3 ---
γ
(km/s)
--- --- --- --- --- --- --- --- -28.8 --- ---
Metallicity
(dex)
0.063053415387600±0.077910965937150 [Fe/H] --- 0.15±0.09 [M/H] --- 0.15 [Fe/H] --- --- --- --- --- ---
log g
(log10(cm/s2))
4.85936034734000±0.00963714211864 --- 4.8208900±0.0038048 --- 4.82±0.03 --- --- --- --- --- ---
ρ
(g/cm3)
--- --- 8.3783439±0.3236045 --- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Feng et al. 2020 Rosenthal et al. 2021 Stassun et al. 2017 Burt et al. 2014
Tp
(days)
2450592.7±2.0
2454481.07+0.81-0.83
--- 2450579.11±9.32
ω
(deg)
117±19
50+26-100
--- 359.43±120.543
Mp sin i
(M)
17.2±1.0 17.6±1.5 19±3 18.394±2.167
Mp sin i
(MJup)
0.0541±0.0031 0.0553±0.0047 0.06±0.01 0.058±0.007
e
0.17±0.05
0.153+0.077-0.080
0.040±0.080 0.04±0.076
P
(days)
38.142±0.007 38.152±0.014 38.14000±0.01500 38.14±0.015
K
(m/s)
6.14±0.32
6.06+0.53-0.52
6.4±0.8 6.43±0.769
a
(au)
0.163±0.003 0.1658±0.0012 0.17±0.01 0.16353±0.000043
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Feng et al. 2020
Tp
(days)
2450304.1±292.8
ω
(deg)
176±63
Mp sin i
(M)
16.0±4.1
Mp sin i
(MJup)
0.0503±0.0129
e
0.40±0.22
P
(days)
727.562±12.198
K
(m/s)
2.44±0.80
a
(au)
1.165±0.023
Literature Stellar Spectra (3 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
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Photometric Light Curve     89 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
2 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
2 Associated Literature Data
System
Star
Confirmed
Candidate
Refuted
Controversial
False Positive
Aliases
Data Access
Transit Prediction Service
Time Series
Kepler | K2
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