GJ 887 Overview

GJ 887 0.50 R⦿ 3667.00 K
GJ 887 b
GJ 887 c
Architecture
GJ 887
GJ 887
GJ 887 b
GJ 887 c
Discovery Data
Host Planet Method Year Reference Disposition
GJ 887 GJ 887 b Radial Velocity 2020 Jeffers et al. 2020 Confirmed Planet
GJ 887 GJ 887 c Radial Velocity 2020 Jeffers et al. 2020 Confirmed Planet
GJ 887 b GJ 887 c
RA
23h05m52.04s
Dec
-35d51m11.0s
Distance
3.29±0.01 pc
Parallax
303.90±0.87 mas
Ecliptic Latitude
-27.51181 deg
Ecliptic Longitude
332.68432 deg
Galactic Latitude
-65.95709 deg
Galactic Longitude
5.10081 deg
Total Proper Motion
6896.07±0.70 mas/yr
Proper Motion (RA)
6767.26±0.70 mas/yr
Proper Motion (Dec)
1326.66±0.74 mas/yr
Photometry
mV
---
mTESS
---
mJ
---
mH
---
mKs
---
mIc
---
mGaia
---
mB
---
Abundances
(Hypatia Catalog)
[Fe/H] -0.23±0.04 dex
[O/H] -0.22±0.09 dex
Source Jeffers et al. 2020 TICv8 Gaia DR2 Turnbull 2015 Wright et al. 2004 Nordstrom et al. 2004 Nidever et al. 2002 Hawley et al. 1996 Michigan Catalog, Vol. 3 Cannon & Pickering 1918
S Index
--- --- --- --- 1.070±0.139 --- --- --- --- ---
Teff
(K)
3688±86
3676.320+167.907-119.858
3957.3574+77.5552-81.8300
3667 --- --- --- --- --- ---
L
(log10(L⦿))
-1.43+0.04-0.05
-1.38405+0.06318-0.07257
---
-1.398 +0.544-0.176
--- --- --- --- --- ---
M
(M⦿)
0.489±0.050
0.5400000+0.1084300-0.0777627
--- 0.44 --- --- --- --- --- ---
R
(R⦿)
0.4712±0.0860
0.5009560+0.0619271-0.0817915
--- 0.50 --- --- --- --- --- ---
Sp. T
M1 V --- --- M1.0V --- --- --- M0.5 M2/3 V Map
Metallicity
(dex)
-0.060±0.080 [Fe/H] -0.22±0.09 [M/H] --- --- --- --- --- --- --- ---
v sin i
(km/s)
2.5±1.0 --- --- --- --- 1 --- --- --- ---
Age
(Gyr)
2.88+3.85-2.88
--- --- --- --- --- --- --- --- ---
log g
(log10(cm/s2))
4.78
4.770860+0.180618-0.175462
--- --- --- --- --- --- --- ---
γ
(km/s)
--- --- 8.172909859624841±0.144854029319970 --- --- 7.5±0.2 8.8 --- --- ---
ρ
(g/cm3)
---
6.05563+3.52293-2.34853
--- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Jeffers et al. 2020
Teq
(K)
468
S
(S)
7.95±0.20
Mp sin i
(M)
4.2±0.6
Mp sin i
(MJup)
0.013±0.002
e
0
P
(days)
9.262±0.001
K
(m/s)
2.1+0.3-0.2
a
(au)
0.068±0.002
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Jeffers et al. 2020
Teq
(K)
352
S
(S)
2.56±0.20
Mp sin i
(M)
7.6±1.2
Mp sin i
(MJup)
0.024±0.004
P
(days)
21.789+0.004-0.005
K
(m/s)
2.8±0.4
a
(au)
0.120±0.004
Literature Stellar Spectra (2 Files)
File Type Spectrum Type Wavelength Category Reference
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     132 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
2 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
2 KELT Time Series
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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