K2-256 Overview
-
Star:
K2-256
- Stellar Radius: 0.69 Solar Radius
- Stellar Effective Temperature: 5287.11 K
-
Planet:
K2-256 b
- Disposition Refuted
- Planet Radius 0.235 Jupiter Radius
K2-256 Architecture & Discovery Information
| Name | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|
| K2-256 | ||||||
| K2-256 b | 5.52 d | 2.63 R⨁ | Transit | 2018 | Livingston et al. 2018 | False Positive Planet |
K2-256 b
- Confirmed planet signal refuted in ref. (Lehmann & Vanderburg 2024)
- RA
- 12h24m54.50s
- Dec
- -02d03m57.77s
- Distance
-
564.693+14.928-14.191pc
- Parallax
- 1.7428300±0.0452949 mas
- Ecliptic Latitude
- .57538 deg
- Ecliptic Longitude
- 186.53057 deg
- Galactic Latitude
- 60.11398 deg
- Galactic Longitude
- 289.53796 deg
- Total Proper Motion
- 27.5476825±0.0658377 mas/yr
- Proper Motion (RA)
- -11.9138000±0.0924475 mas/yr
- Proper Motion (Dec)
- -24.8382000±0.0580134 mas/yr
- Photometry
- mV 14.954±0.229
- mTESS 14.1710±0.0068
- mJ 13.350±0.023
- mH 12.912±0.025
- mKs 12.820±0.024
- mKep 14.659
- mW1 12.795±0.025
- mW2 12.819±0.031
- mW3 12.051±0.330
- mW4 8.981
- mGaia 14.699200±0.000346
- mB 15.701±0.014
- mg 15.2453000±0.0036304
- mi 14.4289000±0.0036454
- mr 14.6513000±0.0036924
- mu 16.6771000±0.0065925
- mz 14.3077000±0.0042753
- Mission
- K2: Observed in Campaign 10
| Source | TICv8 | Gaia DR2 | Livingston et al. 2018 |
|---|---|---|---|
|
Teff
(K)
|
5254.0±122.0 |
5287.1104+335.7370-187.4230
|
5219+179-136
|
|
L✶
(log10(L⦿))
|
-0.4654812 |
-0.46944036+0.02448240-0.02594542
|
--- |
|
R✶
(R⦿)
|
0.706207 |
0.69421774+0.05196540-0.08042770
|
0.78±0.02 |
|
Metallicity
(dex)
|
--- | --- | -0.10±0.17 [Fe/H] |
|
M✶
(M⦿)
|
0.9 | --- |
0.84+0.03-0.04
|
|
log g
(log10(cm/s2))
|
4.69445 | --- |
4.58+0.01-0.02
|
|
ρ✶
(g/cm3)
|
3.6025714 | --- | --- |
- Status
- False Positive Planet
- Detected By
- Transit
| Source | Livingston et al. 2018 |
|---|---|
|
a/R✶
|
7.6+1.3-1.9
|
|
Teq
(K)
|
845±28 |
|
b
|
0.42+0.34-0.29
|
|
P
(days)
|
5.52011+0.00239-0.00289
|
|
Rp
(R⨁)
|
2.63+0.25-0.21
|
|
Rp
(RJup)
|
0.235+0.022-0.019
|
|
Rp/R✶
|
0.0309+0.0028-0.0022
|
|
a
(au)
|
0.0578±0.0008 |
|
δ
(%)
|
0.097 |
|
T14
(hours)
|
3.6 |
|
TC
(days)
|
2457586.5247+0.0202-0.0191
(BJD)
|
Nearby Data (within 30 arcseconds) Browse Nearby Data
+
- Known Objects
- 1 K2 Targets
- 1 2MASS Point Source Catalog
- Data Files
- 1 K2 Time Series
-
Ephemeris Matching Reveals False Positive Validated and Candidate Planets from the K2 Mission
Lehmann & Vanderburg 2024 Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview -
Gaia Data Release 2
Gaia DR2 Reference Overview -
44 Validated Planets from K2 Campaign 10
Livingston et al. 2018 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
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