GJ 806 Overview
-
Star:
GJ 806
- Stellar Radius: 0.43 Solar Radius
- Stellar Effective Temperature: 3584.00 K
-
Planet:
GJ 806 b
- Disposition Confirmed
- Planet Radius 0.119 Jupiter Radius
-
Planet:
GJ 806 c
- Disposition Confirmed
GJ 806 Architecture & Discovery Information
| Name | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|
| GJ 806 | ||||||
| GJ 806 b | 0.93 d | 1.33 R⨁ | Transit | 2023 | Palle et al. 2023 | Confirmed Planet |
| GJ 806 c | 6.64 d | > 5.8 M⨁ | Radial Velocity | 2023 | Palle et al. 2023 | Confirmed Planet |
GJ 806
- Stellar age value/uncertainties estimated from range given in ref. (Palle et al. 2023)
- Rotation period value/uncertainties estimated from range given in ref. (Palle et al. 2023)
- RA
- 20h45m04.73s
- Dec
- +44d30m00.85s
- Distance
- 12.04450±0.00435 pc
- Parallax
- 82.9968000±0.0295717 mas
- Ecliptic Latitude
- 58.90555 deg
- Ecliptic Longitude
- 335.63331 deg
- Galactic Latitude
- 1.00774 deg
- Galactic Longitude
- 84.07015 deg
- Total Proper Motion
- 511.8037756±0.0506700 mas/yr
- Proper Motion (RA)
- 434.0790000±0.0472223 mas/yr
- Proper Motion (Dec)
- 271.1430000±0.0585871 mas/yr
- Photometry
- mV 10.79±0.10
- mTESS 8.7276200±0.0073409
- mJ 7.329±0.018
- mH 6.769±0.023
- mKs 6.533±0.016
- mIc ---
- mGaia 9.824610±0.000759
- mB 12.495±0.003
-
Abundances
(Hypatia Catalog) - [Fe/H] -0.17±0.06 dex
- [Mg/H] -0.40±0.07 dex
- [Si/H] -0.43±0.05 dex
| Source | Palle et al. 2023 | TICv8 | Turnbull 2015 | Wright et al. 2004 | Nidever et al. 2002 | Hawley et al. 1996 | ExoFOP | ||
|---|---|---|---|---|---|---|---|---|---|
|
Teff
(K)
|
3600±16 | 3573.0±157.0 | 3584 | --- | --- | --- | 3573±157 | ||
|
L✶
(log10(L⦿))
|
-1.5853+0.0016-0.0016
|
-1.57605+0.09194-0.11678
|
-1.523 +0.637-0.368
|
--- | --- | --- | --- | ||
|
M✶
(M⦿)
|
0.413±0.011 | 0.4195770±0.0201656 | 0.40 | --- | --- | --- | --- | ||
|
R✶
(R⦿)
|
0.4144±0.0038 | 0.4251690±0.0125082 | 0.43 | --- | --- | --- | 0.43±0.01 | ||
|
Sp. T
|
M1.5 V | --- | M3 | --- | --- | M1.5 | --- | ||
|
γ
(km/s)
|
-24.6940±0.0023 | --- | --- | --- | -24.7 | --- | --- | ||
|
S Index
|
--- | --- | --- | 0.948±0.123 | --- | --- | --- | ||
|
log g
(log10(cm/s2))
|
4.98±0.12 | 4.8037600±0.0046717 | --- | --- | --- | --- | 4.80376000±0.00467167 | ||
|
Metallicity
(dex)
|
-0.28±0.07 [Fe/H] | --- | --- | --- | --- | --- | --- | ||
|
v sin i
(km/s)
|
<2.0 | --- | --- | --- | --- | --- | --- | ||
|
Age
(Gyr)
|
5+3-4
|
--- | --- | --- | --- | --- | --- | ||
|
ρ✶
(g/cm3)
|
8.600+0.450-0.460
|
7.696481±0.309409 | --- | --- | --- | --- | --- | ||
|
CAII LOG RHK
|
-4.923+0.052-0.059
|
--- | --- | --- | --- | --- | --- | ||
|
Prot
(days)
|
41.4+6.7-6.8
|
--- | --- | --- | --- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity, Transit
| Source | Palle et al. 2023 | ExoFOP | ||
|---|---|---|---|---|
|
a/R✶
|
7.30±0.13 | --- | ||
|
Teq
(K)
|
940±10 | 1162 | ||
|
b
|
0.300+0.060-0.070
|
--- | ||
|
S
(S⨁)
|
130±6 | 303.547 | ||
|
Mp
(M⨁)
|
1.90±0.17 | --- | ||
|
Mp
(MJup)
|
0.00598±0.00053 | --- | ||
|
i
(deg)
|
87.7+0.6-0.5
|
--- | ||
|
P
(days)
|
0.9263237±0.0000009 | 0.9263237±0.0000004 | ||
|
ρ
(g/cm3)
|
4.40±0.45 | --- | ||
|
Rp
(R⨁)
|
1.331±0.023 | 1.6782300±0.0761765 | ||
|
Rp
(RJup)
|
0.1187±0.0021 | 0.14972191±0.00679602 | ||
|
Rp/R✶
|
0.0294±0.0004 | --- | ||
|
K
(m/s)
|
2.25±0.20 | --- | ||
|
a
(au)
|
0.01406±0.00030 | --- | ||
|
T14
(hours)
|
0.930±0.010 | 0.810±0.136 | ||
|
TC
(days)
|
2459445.57371±0.00015
(BJD)
|
2460559.0155520±0.0002797
(BJD)
|
||
|
δ
(%)
|
--- | 0.095200000±0.008901840 |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity
- Tools
- Planetary Systems
| Source | Palle et al. 2023 |
|---|---|
|
a/R✶
|
27.13+0.45-0.50
|
|
Teq
(K)
|
490±5 |
|
S
(S⨁)
|
9.5±0.4 |
|
Mp sin i
(M⨁)
|
5.80±0.30 |
|
Mp sin i
(MJup)
|
0.0182±0.0009 |
|
P
(days)
|
6.64064±0.00025 |
|
K
(m/s)
|
3.55±0.17 |
|
a
(au)
|
0.0523±0.0011 |
|
TC
(days)
|
2459422.182±0.050
(BJD)
|
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 | 121 | Hp (Hipparcos) | Hipparcos and Tycho Catalogs |
Nearby Data (within 30 arcseconds) Browse Nearby Data
+
- Known Objects
- 2 Confirmed Planets
- 7 2MASS Point Source Catalog
- Data Files
- 1 SuperWASP Time Series
- 2 Associated Literature Data
-
GJ 806 (TOI-4481): A bright nearby multi-planetary system with a transiting hot low-density super-Earth
Palle et al. 2023 Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview -
ExoFOP TOI Table
ExoFOP -
ExoCat-1: The Nearby Stellar Systems Catalog for Exoplanet Imaging Missions
Turnbull 2015 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 -
The Tycho-2 catalog of the 2.5 million brightest stars
The Tycho-2 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
- System
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- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
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