GJ 876 Overview

GJ 876 0.38 R⦿ 3129.00 K
GJ 876 d
GJ 876 c
GJ 876 b
GJ 876 e
Architecture
GJ 876
GJ 876
GJ 876 d
GJ 876 c
GJ 876 b
GJ 876 e
Discovery Data
Host Planet Method Year Reference Disposition
GJ 876 GJ 876 d Radial Velocity 2005 Rivera et al. 2005 Confirmed Planet
GJ 876 GJ 876 c Radial Velocity 2000 Marcy et al. 2001 Confirmed Planet
GJ 876 GJ 876 b Radial Velocity 1998 Marcy et al. 1998 Confirmed Planet
GJ 876 GJ 876 e Radial Velocity 2010 Rivera et al. 2010 Confirmed Planet
GJ 876 d
  • Time of Periastron/Transit Midpoint definition ambiguity in ref.; value omitted. (Kammer et al. 2014)
RA
22h53m17.75s
Dec
-14d15m59.74s
Distance
4.67517±0.00167 pc
Parallax
213.8670000±0.0758348 mas
Ecliptic Latitude
-6.63092 deg
Ecliptic Longitude
339.17192 deg
Galactic Latitude
-59.63511 deg
Galactic Longitude
52.00313 deg
Total Proper Motion
1171.1009489±0.1123822 mas/yr
Proper Motion (RA)
957.961000±0.117383 mas/yr
Proper Motion (Dec)
-673.638000±0.101519 mas/yr
Photometry
mV
10.16±0.10
mTESS
7.5770300±0.0074424
mJ
5.934±0.019
mH
5.349±0.049
mKs
5.010±0.021
mKep
9.131
mW1
4.863±0.243
mW2
4.448±0.140
mW3
4.636±0.015
mW4
4.523±0.031
mIc
7.480±0.021
mGaia
8.87530±0.00145
mB
11.730±0.121
Source Rosenthal et al. 2021 TICv8 Gaia DR2 Nelson et al. 2016 Turnbull 2015 von Braun et al. 2014 Rivera et al. 2010 Correia et al. 2010 Sanz-Forcada et al. 2010 Wright et al. 2004 Nidever et al. 2002 Hawley et al. 1996 Henry et al. 1994
S Index
--- --- --- --- --- --- --- --- --- 1.020±0.133 --- --- ---
Teff
(K)
3293.736655730000±48.386496441900 3271.0±157.0
3837.205+188.308-283.682
--- 3227 3129±19 --- --- --- --- --- --- ---
L
(log10(L⦿))
---
-1.89295+0.09803-0.12681
--- ---
-1.699 +0.740-0.544
-1.914±0.007 -1.91 -1.886 --- --- --- --- ---
Metallicity
(dex)
0.21286354470300±0.06368761130365 [Fe/H] --- --- --- --- 0.19 [Fe/H] --- 0.05±0.20 [Fe/H] --- --- --- --- ---
M
(M⦿)
0.36960720960300±0.00925103268102 0.3367780±0.0202407 --- 0.37 0.34 0.37 0.32±0.03 0.334±0.033 --- --- --- --- ---
R
(R⦿)
0.3669996545570000±0.0080203676275800 0.3522240±0.0105297 --- --- 0.40 0.3761±0.0059 0.3 --- --- --- --- --- ---
Sp. T
--- --- --- --- M2.5V M4 --- M4 V --- --- --- M4 M3.5 V
Age
(Gyr)
--- --- --- --- --- --- >1 2.55±2.45 15 --- --- --- ---
γ
(km/s)
--- --- --- --- --- --- --- --- --- --- -1.6±0.2 --- ---
v sin i
(km/s)
--- --- --- --- --- --- --- 0.16 --- --- --- --- ---
ρ
(g/cm3)
--- 10.8655736±0.3208426 --- --- --- --- --- --- --- --- --- --- ---
log g
(log10(cm/s2))
4.8749106899400001±0.0116743716177000 4.8717700±0.0003975 --- --- --- --- --- --- --- --- --- --- ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Rivera et al. 2010 Rosenthal et al. 2021 Trifonov et al. 2018 Nelson et al. 2016 Kammer et al. 2014 Correia et al. 2010 Rivera et al. 2005
Tp
(days)
2450602.093
2455200.064+0.047-0.049
--- --- --- 2455000.00 ---
ω
(deg)
234±20
-63.6+28.0-15.0
272.8+21.8-29.5
-140.90+286.32-23.85
--- 168.45±17.21 0
Mp
(M)
6.83±0.40 --- ---
7.49+0.43-0.41
--- --- 7.53±0.70
Mp
(MJup)
0.021±0.001 --- ---
0.0236+0.0014-0.0013
--- --- 0.024±0.002
e
0.207±0.055
0.273+0.093-0.098
0.0820+0.0430-0.0250
0.119+0.050-0.052
0.207±0.055 0.124±0.032 0
i
(deg)
59 --- 59.0
53.19+1.39-1.43
--- 59 50
P
(days)
1.937780±0.000020
1.937916+2.700000-3.000000
1.938±0.001
1.937848+0.000024-0.000023
1.93778±0.00002 1.93785±0.00002 1.93774±0.00006
K
(m/s)
6.56±0.37
6.10+0.56-0.55
6.14+0.23-0.22
6.01±0.30 --- 6.60±0.26 6.32±0.59
a
(au)
0.02080665±0.00000015
0.02183+0.00018-0.00019
0.021±0.001
0.02183911+0.00000019-0.00000018
--- 0.021 0.0208067±0.0000004
Mp
(M)
--- --- 8.06±0.31 --- --- 7.4 ---
Mp
(MJup)
--- --- 0.0254±0.0010 --- --- 0.02 ---
Mp sin i
(M)
---
5.85+0.51-0.48
6.910+0.220-0.270
--- 5.85±0.39 6.2 ---
Mp sin i
(MJup)
---
0.0184+0.0016-0.0015
0.02174+0.00069-0.00085
--- 0.0184±0.0012 0.02 ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Rivera et al. 2010 Rosenthal et al. 2021 Trifonov et al. 2018 Nelson et al. 2016 Correia et al. 2010 Rivera et al. 2005 Marcy et al. 2001
Tp
(days)
2450602.093
2453029.298+0.049-0.057
--- --- 2455000.00 --- 2450031.4±1.2
ω
(deg)
48.76±0.70
-20.0+92.0-50.0
51.6+0.4-1.0
115.96+1.21-1.35
274.64±1.19 197.4±0.9 330±12
Mp
(M)
226.9846±1.2395 --- ---
266.2+4.8-4.3
273.32 251.075±1.907 ---
Mp
(MJup)
0.7142±0.0039 --- ---
0.8376+0.0151-0.0135
0.86 0.790±0.006 ---
e
0.25591±0.00093
0.00690+0.00630-0.00500
0.250+0.001-0.002
0.2531±0.0031 0.265±0.002 0.2632±0.0013 0.27±0.04
i
(deg)
59 --- 59.0
53.19+1.39-1.43
45.67±1.81 50 ---
P
(days)
30.0881±0.0082
30.22902+0.00052-0.00055
30.126+0.011-0.003
30.0784+0.0075-0.0071
30.259±0.010 30.455±0.019 30.12±0.02
K
(m/s)
88.34±0.47
88.44+0.55-0.57
88.34+0.23-0.25
87.93±0.36 85.91±0.40 87.14±0.67 81±5
a
(au)
0.129590±0.000024
0.1363+0.0011-0.0012
0.134±0.001
0.135989+0.000023-0.000021
0.132 0.13065±0.00005 0.130
Mp sin i
(M)
---
222+4-4
241.5+0.7-0.6
--- --- --- 177.98±28.60
Mp sin i
(MJup)
---
0.698+0.012-0.013
0.7598+0.0022-0.0019
--- --- --- 0.56±0.09
Mp
(M)
--- --- 282±1 --- --- --- ---
Mp
(MJup)
--- --- 0.886±0.003 --- --- --- ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Rivera et al. 2010 Rosenthal et al. 2021 Trifonov et al. 2018 Nelson et al. 2016 Correia et al. 2010 Rivera et al. 2005 Marcy et al. 2001 Marcy et al. 1998
Tp
(days)
2450602.093
2453055.984+0.038-0.047
--- --- 2455000.00 --- 2450106.2±1.9 2450301.0±1.0
ω
(deg)
50.3±3.2
-6.0+69.0-54.0
35.1+6.7-1.9
110.80+3.86-3.91
274.69±2.57 185.5±4.3 333±12 24±6
Mp
(M)
723.2235±1.4302 --- ---
845.3+16.6-15.0
839.04 804.076±2.543 --- ---
Mp
(MJup)
2.2756±0.0045 --- ---
2.660+0.052-0.047
2.64 2.530±0.008 --- ---
e
0.0324±0.0013
0.0020+0.0019-0.0014
0.027±0.002
0.0368+0.0019-0.0025
0.031±0.001 0.0338±0.0025 0.10±0.02 0.27±0.03
i
(deg)
59 --- 59.0
53.19+1.39-1.43
48.98±0.94 50 --- ---
P
(days)
61.1166±0.0086
61.03474+0.00080-0.00084
61.082+0.006-0.010
61.087+0.011-0.012
61.065±0.012 60.830±0.019 61.02±0.03 60.85±0.15
K
(m/s)
214.00±0.42
211.97+0.56-0.60
212.07+0.27-0.26
213.94+0.37-0.38
212.09±0.33 212.81±0.66 210±5 239±5
a
(au)
0.208317±0.000020
0.2177+0.0018-0.0019
0.214±0.001 0.218585±0.000026 0.211 0.20774±0.00004 0.208 0.21±0.01
Mp sin i
(M)
---
672.2+11.1-11.4
760.9±1.0 --- --- --- 600.67±95.34 670.59±63.56
Mp sin i
(MJup)
---
2.115+0.035-0.036
2.394±0.003 --- --- --- 1.89±0.3 2.11±0.20
Mp
(M)
--- --- 888±1 --- --- --- --- ---
Mp
(MJup)
--- --- 2.79±0.00 --- --- --- --- ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Rivera et al. 2010 Trifonov et al. 2018 Nelson et al. 2016
Tp
(days)
2450602.093 --- ---
ω
(deg)
239±22
263.6+28.3-46.0
129.56+36.31-185.78
Mp
(M)
14.6±1.7 ---
16.58+1.96-2.11
Mp
(MJup)
0.046±0.005 ---
0.05217+0.00617-0.00664
e
0.055±0.012
0.040+0.021-0.004
0.031+0.030-0.025
i
(deg)
59 59.0
53.19+1.39-1.43
P
(days)
124.26±0.70
124.4+0.3-0.7
124.50±1.33
K
(m/s)
3.42±0.39
3.39+0.29-0.28
3.31+0.38-0.42
a
(au)
0.3343±0.0013
0.345+0.001-0.002
0.3514±0.0025
Mp
(M)
--- 18.0±1.5 ---
Mp
(MJup)
--- 0.0566±0.0047 ---
Mp sin i
(M)
---
15.43+1.29-1.27
---
Mp sin i
(MJup)
---
0.04855+0.00406-0.00400
---
Literature Stellar Spectra (13 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
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
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Spectra     echelle grating Optical California Planet Search
Literature Time Series (2 File Types, 7 Files)
File Type Data Points Filter Reference
Photometric Light Curve     371 (b+y)/2 (Stromgren) Rivera et al. 2005
Photometric Light Curve     371 (b+y)/2 (Stromgren) Rivera et al. 2005
Photometric Light Curve     68 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Radial Velocity Curve     155 Optical Spectra Rivera et al. 2005
Radial Velocity Curve     113 Optical Spectra Laughlin et al. 2005
Radial Velocity Curve     54 Optical Spectra Marcy et al. 2001
Radial Velocity Curve     16 Optical Spectra Marcy et al. 2001
Known Objects
4 Confirmed Planets
2 K2 Targets
1 2MASS Point Source Catalog
Data Files
2 K2 Time Series
4 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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