GJ 687 Overview
GJ 687
0.42
R⦿
3413.00
K
GJ 687 b
GJ 687 c
- Other Data
- Bibliography 20
- Exoplanet Archive Notes 1
- Nearby Data 3
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
-
mV9.15±0.10
-
mTESS6.848±0.032
-
mJ5.335±0.021
-
mH4.766±0.033
-
mKs4.548±0.021
-
mW14.398±0.268
-
mW23.333±0.107
-
mW34.205±0.015
-
mW44.061±0.023
-
mIc---
-
mGaia8.027540±0.000862
-
mB10.617±0.046
-
Abundances
(Hypatia Catalog) -
[Fe/H] 0.09±0.05 dex
-
-
[O/H] 0.01±0.09 dex
-
-
-
-
-
-
-
| 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 | --- | --- | 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 |
|
TC
(days)
|
--- |
2454481.07+0.81-0.83
|
--- | --- |
- 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
-
The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades
Rosenthal et al. 2021 | Reference Overview -
Search for Nearby Earth Analogs .III. Detection of 10 New Planets, 3 Planet Candidates, and Confirmation of 3 Planets around 11 Nearby M Dwarfs
Feng et al. 2020 | Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 | Reference Overview -
Gaia Data Release 2
Gaia DR2 | Reference Overview -
Accurate Empirical Radii and Masses of Planets and Their Host Stars with Gaia Parallaxes
Stassun et al. 2017 | Reference Overview -
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 | Reference Overview -
The Lick-Carnegie Exoplanet Survey: Gliese 687 b---A Neptune-mass Planet Orbiting a Nearby Red Dwarf
Burt et al. 2014 | Reference Overview -
All WISE Data Release
Cutri et al. 2014 | Reference Overview -
CPS
California Planet Search -
Chromospheric Ca II Emission in Nearby F, G, K, and M Stars
Wright et al. 2004 | Reference Overview -
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog | Reference Overview -
Radial Velocities of 889 late-type stars
Nidever et al. 2002 | Reference Overview -
Revised Coordinates and Proper Motions of the Stars in the Luyten Half-Second Catalog
Bakos et al. 2002 | Reference Overview -
Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)
van Altena et al. 2001 | Reference Overview -
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 Catalog | Reference Overview -
The Washington Double Star Catalog (WDS, 1996.0)
WDS Catalog | Reference Overview -
The Hipparcos and Tycho Catalogs
Hipparcos and Tycho Catalogs | Reference Overview -
The Palomar/MSU nearby star spectroscopic survey. II. The southern M dwarfs and investigations of magnetic activity.
Hawley et al. 1996 | Reference Overview -
Photometry of Stars with Large Proper Motion
Weis 1996 | Reference Overview -
CA II H and K measurements made at Mount Wilson Observatory, 1966-1983
Duncan et al. 1991 | Reference Overview
- System
- Star
- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
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