GJ 251 Overview

GJ 251 0.38 R⦿ 3423.00 K
GJ 251 b
Architecture
GJ 251
GJ 251
GJ 251 b
Other Data
Bibliography 16
Nearby Data 5
Discovery Data
Host Planet Method Year Reference Disposition
GJ 251 GJ 251 b Radial Velocity 2020 Stock et al. 2020 Confirmed Planet
RA
06h54m48.06s
Dec
+33d15m59.27s
Distance
5.58057±0.00198 pc
Parallax
179.1640000±0.0631919 mas
Ecliptic Latitude
10.37791 deg
Ecliptic Longitude
101.6144 deg
Galactic Latitude
15.13189 deg
Galactic Longitude
182.93672 deg
Total Proper Motion
828.3471043±0.1298242 mas/yr
Proper Motion (RA)
-726.394000±0.133004 mas/yr
Proper Motion (Dec)
-398.134000±0.118627 mas/yr
Photometry
mV
9.89±0.10
mTESS
7.6481900±0.0078748
mJ
6.104±0.024
mH
5.526±0.016
mKs
5.275±0.023
mW1
5.119±0.159
mW2
4.798±0.078
mW3
4.916±0.016
mW4
4.786±0.031
mIc
7.500±0.025
mGaia
8.855180±0.001134
mB
11.740±0.113
Source Stock et al. 2020 TICv8 Gaia DR2 Turnbull 2015 Wright et al. 2004 Nidever et al. 2002 Hawley et al. 1996 Duncan et al. 1991 Cannon & Pickering 1918
Teff
(K)
3451±51 3398.0±157.0
3683.39+247.28-199.39
3423 --- --- --- --- ---
L
(log10(L⦿))
-1.77+0.01-0.01
-1.78926+0.09561-0.12278
---
-1.699 +0.778-0.602
--- --- --- --- ---
M
(M⦿)
0.360±0.015 0.354705±0.020304 --- 0.35 --- --- --- --- ---
R
(R⦿)
0.364±0.011 0.3677700±0.0110554 --- 0.38 --- --- --- --- ---
Sp. T
M3.0 V --- --- M3.0V --- --- M3 --- K0
Metallicity
(dex)
-0.030±0.160 [Fe/H] --- --- --- --- --- --- --- ---
γ
(km/s)
22.654±0.025 --- --- --- --- 22.9 --- --- ---
v sin i
(km/s)
<2 --- --- --- --- --- --- --- ---
log g
(log10(cm/s2))
4.96±0.07 4.8567800±0.0012311 --- --- --- --- --- --- ---
Prot
(days)
122.1+1.9-2.2
--- --- --- --- --- --- --- ---
ρ
(g/cm3)
--- 10.0531894±0.3307608 --- --- --- --- --- --- ---
S Index
--- --- --- --- 0.760±0.099 --- --- 0.7801±0.0136 ---
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Source Stock et al. 2020
Teq
(K)
351.0+1.4-1.3
S
(S)
2.53±0.04
ω
(deg)
78.80+47.60-44.70
Mp sin i
(M)
4.00±0.40
Mp sin i
(MJup)
0.0126±0.0013
e
0.10+0.09-0.07
P
(days)
14.238±0.002
K
(m/s)
2.11+0.21-0.20
a
(au)
0.0818+0.0011-0.0012
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     89 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
1 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
2 SuperWASP Time Series
1 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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