K2-187 Overview
-
Star:
K2-187
- Stellar Radius: 0.92 Solar Radius
- Stellar Effective Temperature: 5337.00 K
-
Planet:
K2-187 b
- Disposition Confirmed
- Planet Radius 0.107 Jupiter Radius
-
Planet:
K2-187 c
- Disposition Confirmed
- Planet Radius 0.125 Jupiter Radius
-
Planet:
K2-187 d
- Disposition Confirmed
- Planet Radius 0.214 Jupiter Radius
-
Planet:
K2-187 e
- Disposition Confirmed
- Planet Radius 0.170 Jupiter Radius
K2-187 Architecture & Discovery Information
| Name | Orbital Separation | Planet Size | Method | Year | Reference | Disposition |
|---|---|---|---|---|---|---|
| K2-187 | ||||||
| K2-187 b | 0.77 d | 1.2 R⨁ | Transit | 2018 | Mayo et al. 2018 | Confirmed Planet |
| K2-187 c | 2.87 d | 1.4 R⨁ | Transit | 2018 | Mayo et al. 2018 | Confirmed Planet |
| K2-187 d | 7.15 d | 2.4 R⨁ | Transit | 2018 | Mayo et al. 2018 | Confirmed Planet |
| K2-187 e | 13.61 d | 1.9 R⨁ | Transit | 2018 | Mayo et al. 2018 | Confirmed Planet |
K2-187
- Multiple stellar densities are derived in ref. (Livingston et al. 2018)
- Candidate identifier changed to match previous publication. (Kruse et al. 2019)
- Candidate identifier changed to match previous publication. (Kruse et al. 2019)
- RA
- 08h50m05.65s
- Dec
- +23d11m32.90s
- Distance
-
330.916+5.727-5.539pc
- Parallax
- 2.993900±0.051039 mas
- Ecliptic Latitude
- 5.27026 deg
- Ecliptic Longitude
- 128.59836 deg
- Galactic Latitude
- 35.76402 deg
- Galactic Longitude
- 202.77723 deg
- Total Proper Motion
- 32.9140281±0.0514144 mas/yr
- Proper Motion (RA)
- -11.8636000±0.0747951 mas/yr
- Proper Motion (Dec)
- -30.7016000±0.0469343 mas/yr
- Photometry
- mV 13.102±0.069
- mTESS 12.3562±0.0069
- mJ 11.687±0.022
- mH 11.289±0.028
- mKs 11.196±0.021
- mKep 12.864
- mW1 11.169±0.022
- mW2 11.235±0.021
- mW3 11.069±0.186
- mW4 8.362001
- mGaia 12.867300±0.000247
- mB 13.986±0.290
- mg 13.5671000±0.0015621
- mi 12.7502000±0.0014716
- mr 12.9476000±0.0012166
- mu 15.6548000±0.0070151
- mz 13.3229000±0.0078603
-
Abundances
(Hypatia Catalog) - [Fe/H] 0.25±0.04 dex
- [Mg/H] 0.35±0.07 dex
- Mission
- K2: Observed in Campaigns 5, 18
| Source | Adams et al. 2021 | TICv8 | Livingston et al. 2018 | Gaia DR2 | Mayo et al. 2018 | Kruse et al. 2019 | Kruse et al. 2019 | Kruse et al. 2019 | Petigura et al. 2018 | Petigura et al. 2018 | Pope et al. 2016 | Barros et al. 2016 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Teff
(K)
|
5438±63 |
5374.670+138.451-110.647
|
5484±81 |
5337.000+105.967-203.133
|
5477.0±50.0 | --- | --- | --- | --- | --- | --- | --- | ||
|
L✶
(log10(L⦿))
|
--- |
-0.1960678+0.0204804-0.0185014
|
--- |
-0.2096031+0.0104329-0.0106897
|
--- | --- | --- | --- | --- | --- | --- | --- | ||
|
R✶
(R⦿)
|
0.83±0.11 |
0.9202700+0.0525452-0.0542638
|
0.92±0.02 |
0.9188755+0.0741534-0.0354301
|
0.894913 +0.041087-0.025505
|
0.919 +0.035-0.074
|
0.919 +0.035-0.074
|
0.919 +0.035-0.074
|
0.96 | 0.96 | --- | --- | ||
|
Metallicity
(dex)
|
0.0±0.1 [Fe/H] | 0.266±0.070 [M/H] | 0.23±0.06 [Fe/H] | --- | 0.26±0.08 [Fe/H] | --- | --- | --- | --- | --- | --- | --- | ||
|
M✶
(M⦿)
|
--- |
0.93000000+0.14335900-0.08878640
|
0.980±0.040 | --- |
0.966999 +0.025227-0.024169
|
--- | --- | --- | --- | --- | --- | --- | ||
|
log g
(log10(cm/s2))
|
4.60±0.08 |
4.4787200+0.0843214-0.0843234
|
4.50±0.03 | --- | 4.62±0.1 | --- | --- | --- | --- | --- | --- | --- | ||
|
ρ✶
(g/cm3)
|
--- |
1.6823034+0.4874545-0.3030182
|
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Transit
| Source | Adams et al. 2021 | Livingston et al. 2018 | Mayo et al. 2018 | Kruse et al. 2019 | ||
|---|---|---|---|---|---|---|
|
a/R✶
|
3.9+0.4-0.8
|
4.13+0.97-1.05
|
3.377096 +0.483481-0.981878
|
3.38 +1.06-0.49
|
||
|
P
(days)
|
0.774010±0.000083 |
0.773920+0.000095-0.000092
|
0.773981 +0.000052-0.000050
|
0.773987±0.000035 | ||
|
Rp
(R⨁)
|
1.2±0.2 | 1.30±0.13 |
1.38335970421 +0.160668169685-0.0890792663392
|
1.50 +0.10-0.21
|
||
|
Rp
(RJup)
|
0.11±0.02 | 0.116±0.012 |
0.1234150865 +0.0143338540-0.0079471198
|
0.13 +0.009-0.019
|
||
|
Rp/R✶
|
0.01320+0.00110-0.00053
|
0.0129+0.0014-0.0012
|
0.014172 +0.001512-0.000818
|
0.01499 +0.00085-0.00174
|
||
|
δ
(%)
|
--- | --- | --- |
0.0237 +0.0011-0.0012
|
||
|
T14
(hours)
|
--- | --- | --- |
1.57920+0.08400-0.12000
|
||
|
TC
(days)
|
2457184.43637+0.00160-0.00180
(HJD)
|
2457142.64378+0.00487-0.00517
(BJD)
|
2457141.09349 +0.002758-0.003045
|
2457140.318 +0.0019-0.0020
(BJD)
|
||
|
i
(deg)
|
89.7+10.0-8.0
|
--- |
81.930168 +5.825258-11.735217
|
--- | ||
|
Teq
(K)
|
--- | 1815±35 | --- | --- | ||
|
b
|
--- |
0.41+0.34-0.28
|
--- | --- | ||
|
a
(au)
|
--- | 0.0164±0.0002 | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Transit
| Source | Adams et al. 2021 | Livingston et al. 2018 | Mayo et al. 2018 | Kruse et al. 2019 | Petigura et al. 2018 | ||
|---|---|---|---|---|---|---|---|
|
b
|
--- |
0.43+0.33-0.29
|
--- | --- |
0.52 +0.32-0.35
|
||
|
P
(days)
|
2.871512±0.000120 |
2.872042+0.000424-0.000420
|
2.871788 +0.000256-0.000257
|
2.87162 +0.00021-0.00019
|
2.871348 +0.000537-0.000546
|
||
|
Rp
(R⨁)
|
1.4±0.2 | 1.80±0.14 |
1.70058745958 +0.251510072751-0.114855273292
|
1.90 +0.16-0.40
|
1.8 +0.3-0.2
|
||
|
Rp
(RJup)
|
0.12±0.02 | 0.161±0.012 |
0.1517162512 +0.0224382258-0.0102467012
|
0.17 +0.014-0.04
|
0.16 +0.03-0.02
|
||
|
Rp/R✶
|
0.01540+0.00150-0.00067
|
0.0179+0.0016-0.0011
|
0.017422 +0.002449-0.001067
|
0.0189 +0.0014-0.0037
|
0.0176 +0.0021-0.0013
|
||
|
T14
(hours)
|
--- | --- | --- |
2.37600+0.14400-0.19200
|
2.18880+0.24960-0.24000
|
||
|
TC
(days)
|
2457144.63842+0.00270-0.00240
(HJD)
|
2457141.75680+0.00617-0.00650
(BJD)
|
2457141.76377 +0.003643-0.003895
|
2457141.7708 +0.0027-0.0029
(BJD)
|
2457141.7649 +0.008115-0.007467
(BJD)
|
||
|
a/R✶
|
9.20+0.80-2.00
|
8.080+1.150-2.170
|
7.553559 +1.249475-2.981331
|
8.1 +3.2-1.4
|
--- | ||
|
i
(deg)
|
90.4+5.0-4.0
|
--- |
86.067367 +2.836604-6.998926
|
--- | --- | ||
|
δ
(%)
|
--- | --- | --- |
0.039 +0.002-0.0021
|
--- | ||
|
Teq
(K)
|
--- | 1173±22 | --- | --- | --- | ||
|
a
(au)
|
--- | 0.0392±0.0005 | --- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Transit
| Source | Adams et al. 2021 | Livingston et al. 2018 | Mayo et al. 2018 | Kruse et al. 2019 | Petigura et al. 2018 | Barros et al. 2016 | Pope et al. 2016 | ||
|---|---|---|---|---|---|---|---|---|---|
|
P
(days)
|
7.149584±0.000120 |
7.149210+0.000776-0.000788
|
7.149079 +0.000360-0.000372
|
7.14998 +0.00032-0.00031
|
7.149336 +0.000573-0.000587
|
7.15451552 | 7.15 | ||
|
δ
(%)
|
--- | --- | --- |
0.1224 +0.0031-0.0032
|
--- | 0.097±0.004 | 0.1068 | ||
|
T14
(hours)
|
--- | --- | --- |
3.28800+0.16800-0.24000
|
2.83920+0.18000-0.12000
|
2.51400 | 2.80296 | ||
|
TC
(days)
|
2457203.52085+0.00190-0.00130
(HJD)
|
2457146.32610+0.00402-0.00392
(BJD)
|
2457146.32854 +0.002027-0.002001
|
2457146.3213 +0.0017-0.0018
(BJD)
|
2457146.32652 +0.002868-0.002940
(BJD)
|
2457146.313282
(BJD)
|
2457146.322
(BJD)
|
||
|
a/R✶
|
18.0+0.9-3.0
|
18.16+1.86-4.10
|
14.822537 +4.155907-6.632083
|
12.9 +4.8-4.4
|
--- | --- | --- | ||
|
i
(deg)
|
90.3+2.0-1.0
|
--- |
87.483206 +1.886985-3.903548
|
--- | --- | --- | --- | ||
|
Rp
(R⨁)
|
2.4±0.3 | 3.17±0.18 |
3.22104537224 +0.507097396957-0.245633506534
|
3.51 +0.41-0.59
|
3.4 +0.5-0.2
|
--- | --- | ||
|
Rp
(RJup)
|
0.21±0.03 | 0.283±0.016 |
0.2873624206 +0.0452401996-0.0219139537
|
0.313 +0.037-0.053
|
0.30 +0.04-0.02
|
--- | --- | ||
|
Rp/R✶
|
0.02590+0.00150-0.00069
|
0.0315+0.0021-0.0013
|
0.032998 +0.004969-0.002334
|
0.0350 +0.0039-0.0052
|
0.0324 +0.0045-0.0016
|
--- | 0.032683 | ||
|
b
|
--- |
0.41+0.31-0.27
|
--- | --- |
0.55 +0.32-0.38
|
--- | 0.03 | ||
|
Teq
(K)
|
--- |
865+17-16
|
--- | --- | --- | --- | --- | ||
|
a
(au)
|
--- | 0.0720±0.0009 | --- | --- | --- | --- | --- |
- Status
- Confirmed Planet
- Detected By
- Transit
| Source | Adams et al. 2021 | Livingston et al. 2018 | Mayo et al. 2018 | Kruse et al. 2019 | Petigura et al. 2018 | ||
|---|---|---|---|---|---|---|---|
|
b
|
--- |
0.43+0.32-0.29
|
--- | --- |
0.49 +0.32-0.33
|
||
|
P
(days)
|
13.6066290±0.0000036 |
13.609878+0.003478-0.002786
|
13.608341 +0.001661-0.001580
|
13.60496 +0.00091-0.00085
|
13.608511 +0.002240-0.002110
|
||
|
Rp
(R⨁)
|
1.9±0.3 | 2.38±0.18 |
2.25541631018 +0.217609903151-0.132477684997
|
2.69 +0.23-0.54
|
2.5 +0.3-0.2
|
||
|
Rp
(RJup)
|
0.17±0.03 | 0.212±0.016 |
0.2012147658 +0.0194138552-0.0118188674
|
0.240 +0.021-0.048
|
0.22 +0.03-0.02
|
||
|
Rp/R✶
|
0.02060+0.00170-0.00077
|
0.0237+0.0020-0.0015
|
0.023105 +0.001961-0.001187
|
0.0268 +0.0021-0.0049
|
0.0243 +0.0026-0.0013
|
||
|
T14
(hours)
|
--- | --- | --- |
4.22400+0.16800-0.40800
|
4.02960+0.25920-0.24000
|
||
|
TC
(days)
|
2457155.08495+0.00310-0.00270
(HJD)
|
2457155.08541+0.00467-0.00477
(BJD)
|
2457141.47225 +0.004976-0.005515
|
2457141.4772 +0.0025-0.0027
(BJD)
|
2457155.08449 +0.004403-0.004500
(BJD)
|
||
|
a/R✶
|
28+2-6
|
23.94+2.96-6.15
|
26.251690 +3.439531-7.324186
|
20.5 +9.0-4.8
|
--- | ||
|
i
(deg)
|
90.1+1.0-2.0
|
--- |
88.970197 +0.751147-1.318388
|
--- | --- | ||
|
δ
(%)
|
--- | --- | --- | 0.0748±0.0025 | --- | ||
|
Teq
(K)
|
--- | 698±13 | --- | --- | --- | ||
|
a
(au)
|
--- | 0.1106±0.0013 | --- | --- | --- |
Nearby Data (within 30 arcseconds) Browse Nearby Data
+
- Known Objects
- 4 Confirmed Planets
- 2 K2 Targets
- 1 2MASS Point Source Catalog
- Data Files
- 1 SuperWASP Time Series
- 1 KELT Praesepe Time Series
- 1 K2 Time Series
- 4 Associated Literature Data
-
Ultra-short-period Planets in K2. III. Neighbors are Common with 13 New Multiplanet Systems and 10 Newly Validated Planets in Campaigns 0-8 and 10
Adams et al. 2021 Reference Overview -
The Revised TESS Input Catalog and Candidate Target List
TICv8 Reference Overview -
Detection of Hundreds of New Planet Candidates and Eclipsing Binaries in K2 Campaigns 0-8
Kruse et al. 2019 Reference Overview -
Sixty Validated Planets from K2 Campaigns 5-8
Livingston et al. 2018 Reference Overview -
Gaia Data Release 2
Gaia DR2 Reference Overview -
275 Candidates and 149 Validated Planets Orbiting Bright Stars in K2 Campaigns 0-10
Mayo et al. 2018 Reference Overview -
Planet Candidates from K2 Campaigns 5─8 and Follow-up Optical Spectroscopy
Petigura et al. 2018 Reference Overview -
New planetary and eclipsing binary candidates from campaigns 1-6 of the K2 mission
Barros et al. 2016 Reference Overview -
Transiting exoplanet candidates from K2 Campaigns 5 and 6
Pope et al. 2016 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
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