HD 20868 Overview
HD 20868
0.76
R⦿
4745.00
K
HD 20868 b
- Architecture
- HD 20868
- HD 20868
- Other Data
- Bibliography 11
- Nearby Data 5
Discovery Data
| Host | Planet | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|
| HD 20868 | HD 20868 b | Radial Velocity | 2008 | Moutou et al. 2009 | Confirmed Planet |
- RA
- 03h20m43.06s
- Dec
- -33d43m46.88s
- Distance
-
47.7223+0.0699-0.0697pc
- Parallax
- 20.9257000±0.0304211 mas
- Ecliptic Latitude
- -49.77738 deg
- Ecliptic Longitude
- 34.43725 deg
- Galactic Latitude
- -57.33374 deg
- Galactic Longitude
- 233.83834 deg
- Total Proper Motion
- 307.8626685±0.0378178 mas/yr
- Proper Motion (RA)
- 292.4670000±0.0350124 mas/yr
- Proper Motion (Dec)
- 96.137800±0.057629 mas/yr
- Photometry
-
mV9.92±0.03
-
mTESS8.9857±0.0060
-
mJ8.138±0.032
-
mH7.641±0.031
-
mKs7.543±0.015
-
mW17.407±0.034
-
mW27.527±0.021
-
mW37.464±0.016
-
mW47.497±0.103
-
mGaia9.613230±0.000273
-
mB10.935±0.037
-
Abundances
(Hypatia Catalog) -
[Fe/H] 0.11±0.02 dex
-
[C/H] -0.01±0.09 dex
-
[Na/H] 0.30±0.04 dex
-
[Mg/H] 0.23±0.07 dex
-
[Al/H] 0.38±0.06 dex
-
[Si/H] 0.08±0.05 dex
-
[Ca/H] 0.12±0.06 dex
-
[BaII/H] 0.03±0.15 dex
| Source | TICv8 | Gaia DR2 | Stassun et al. 2017 | Tsantaki et al. 2014 | Moutou et al. 2009 | Michigan Catalog, Vol. 3 | Cannon & Pickering 1918 |
|---|---|---|---|---|---|---|---|
|
Teff
(K)
|
4802.000+161.305-142.196
|
4844.2935+203.5170-94.1935
|
4802±146 | 4745±25 | 4795±124 | --- | --- |
|
Metallicity
(dex)
|
0.050±0.110 [M/H] | --- | 0.05 [Fe/H] | 0.00±0.03 [Fe/H] | 0.04±0.1 [Fe/H] | --- | --- |
|
v sin i
(km/s)
|
--- | --- | --- | 0.46 | 1.1 | --- | --- |
|
log g
(log10(cm/s2))
|
4.5623900+0.1210940-0.0916366
|
--- | 4.26±0.30 | 4.02±0.09 | 4.22±0.26 | --- | --- |
|
M✶
(M⦿)
|
0.780000+0.107175-0.080346
|
--- | 0.39±0.27 | --- | 0.78±0.03 | --- | --- |
|
R✶
(R⦿)
|
0.7653920+0.0691020-0.0605462
|
0.7489035+0.0299956-0.0591710
|
0.76±0.05 | --- | 0.79 | --- | --- |
|
L✶
(log10(L⦿))
|
-0.5518492+0.0222662-0.0146059
|
-0.55553179+0.00101194-0.00101434
|
--- | --- | -0.529±0.055 | --- | --- |
|
γ
(km/s)
|
--- | 46.121901252413366±0.307284168734484 | --- | --- | --- | --- | --- |
|
Sp. T
|
--- | --- | --- | --- | K3/4 IV | K3/4 III/V | K0 |
|
Age
(Gyr)
|
--- | --- | --- | --- | 4.5±0.4 | --- | --- |
|
ρ✶
(g/cm3)
|
2.4525056+0.9194732-0.6304743
|
--- | --- | --- | --- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Radial Velocity
- Tools
| Source | Stassun et al. 2017 | Moutou et al. 2009 |
|---|---|---|
|
Mp sin i
(M⨁)
|
397±188 | 632.46±15.89 |
|
Mp sin i
(MJup)
|
1.25±0.59 | 1.99±0.05 |
|
e
|
0.75±0.00 | 0.75±0.002 |
|
P
(days)
|
380.85001±0.09000 | 380.85±0.09 |
|
K
(m/s)
|
100.3±0.4 | 100.34±0.42 |
|
a
(au)
|
0.95±0.02 | 0.947±0.012 |
|
Tp
(days)
|
--- | 2454451.52±0.1 |
|
ω
(deg)
|
--- | 356.2±0.4 |
Literature Time Series
(2 File Types, 2 Files)
| File Type | Data Points | Filter | Reference |
|---|---|---|---|
| Photometric Light Curve | 196 | Hp (Hipparcos) | Hipparcos and Tycho Catalogs |
| Radial Velocity Curve | 48 | Optical Spectra | Moutou et al. 2009 |
- Known Objects
- 1 Confirmed Planets
- 1 2MASS Point Source Catalog
- Data Files
- 4 KELT Time Series
- 1 SuperWASP Time Series
- 1 Associated Literature Data
-
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 -
Spectroscopic parameters for solar-type stars with moderate-to-high rotation. New parameters for ten planet hosts
Tsantaki et al. 2014 | Reference Overview -
All WISE Data Release
Cutri et al. 2014 | Reference Overview -
The HARPS search for southern extra-solar planets. XV. Six long-period giant planets around BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, and HD 153950
Moutou et al. 2009 | Reference Overview -
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog | 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 -
Michigan Catalog of two-dimensional spectral types for the HD stars, Vol 3
Michigan Catalog, Vol. 3 | Reference Overview -
The Henry Draper catalogue 0h, 1h, 2h, and 3h
Cannon & Pickering 1918 | Reference Overview
- 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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