K2-257 Overview
K2-257
0.50
R⦿
3725.00
K
K2-257 b
0.074
RJup
- Other Data
- Bibliography 6
- Nearby Data 5
Discovery Data
| Host | Planet | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|
| K2-257 | K2-257 b | Transit | 2018 | Livingston et al. 2018 | Confirmed Planet |
- RA
- 12h33m06.79s
- Dec
- -01d57m11.84s
- Distance
- 64.0065±0.2577 pc
- Parallax
- 15.5949000±0.0624233 mas
- Ecliptic Latitude
- 1.48797 deg
- Ecliptic Longitude
- 188.3738 deg
- Galactic Latitude
- 60.58522 deg
- Galactic Longitude
- 293.57789 deg
- Total Proper Motion
- 55.2841438±0.0977923 mas/yr
- Proper Motion (RA)
- -47.152600±0.106856 mas/yr
- Proper Motion (Dec)
- -28.8612000±0.0679137 mas/yr
- Photometry
-
mV13.716±0.030
-
mTESS11.8080000±0.0072729
-
mJ10.477±0.022
-
mH9.898±0.022
-
mKs9.661±0.019
-
mKep12.873
-
mW19.529±0.023
-
mW29.476±0.020
-
mW39.357±0.042
-
mW48.533
-
mGaia12.860200±0.000436
-
mB15.195±0.030
-
mg15.6138000±0.0065703
-
mi12.314300±0.001219
-
mr15.4887000±0.0116685
-
mu17.0131000±0.0097827
-
mz13.5380000±0.0139814
-
Mission
- K2 : Observed in Campaign 10
| Source | TICv8 | Livingston et al. 2018 | Gaia DR2 |
|---|---|---|---|
|
Teff
(K)
|
3678.0±157.0 |
3725+80-46
|
4089.5166+60.0068-174.5170
|
|
Metallicity
(dex)
|
--- |
-0.030+0.170-0.180
[Fe/H]
|
--- |
|
M✶
(M⦿)
|
0.500292±0.020279 | 0.52±0.01 | --- |
|
R✶
(R⦿)
|
0.5022670±0.0149097 | 0.50±0.01 | --- |
|
log g
(log10(cm/s2))
|
4.735420±0.008178 | 4.76±0.01 | --- |
|
γ
(km/s)
|
--- | --- | 12.58554746418322±0.94743036013122 |
|
L✶
(log10(L⦿))
|
-1.38099+0.09034-0.11420
|
--- | --- |
|
ρ✶
(g/cm3)
|
5.5665441±0.2703525 | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Transit
| Source | Livingston et al. 2018 |
|---|---|
|
a/R✶
|
8.2+1.1-1.8
|
|
Teq
(K)
|
789±14 |
|
b
|
0.40+0.31-0.27
|
|
P
(days)
|
1.60588+0.00014-0.00013
|
|
Rp
(R⨁)
|
0.83+0.06-0.05
|
|
Rp
(RJup)
|
0.074+0.005-0.004
|
|
Rp/R✶
|
0.0153+0.0011-0.0008
|
|
a
(au)
|
0.0216±0.0002 |
|
δ
(%)
|
0.034 |
|
T14
(hours)
|
1.3 |
|
TC
(days)
|
2457583.2875+0.0035-0.0038
|
- Known Objects
- 1 Confirmed Planets
- 1 K2 Targets
- 1 2MASS Point Source Catalog
- Data Files
- 1 K2 Time Series
- 1 Associated Literature Data
-
The Revised TESS Input Catalog and Candidate Target List
TICv8 | Reference Overview -
44 Validated Planets from K2 Campaign 10
Livingston et al. 2018 | Reference Overview -
Gaia Data Release 2
Gaia DR2 | Reference Overview -
The K2 Ecliptic Plane Input Catalog (EPIC) and Stellar Classifications of 138,600 Targets in Campaigns 1-8
EPIC Catalog | Reference Overview -
All WISE Data Release
Cutri et al. 2014 | Reference Overview -
2MASS All-Sky Catalog of Point Sources
2MASS Point Source Catalog | Reference Overview
- System
- Star
- Confirmed
- Candidate
- False Positive Planet
- Controversial
- False Positive
- Aliases
- Data Access
- Transit Prediction Service
- Time Series
- Kepler | K2
- External Link
- Search
- Browse
- Download
