K2-123 Overview

K2-123 0.59 R_⦿ 3880.00 K

K2-123 b

0.246 R_Jup

Overview Parameters Nearby Data Bibliography 13 Legend Expand All

K2-123 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
K2-123
K2-123 b	30.95 d	2.76 R_⨁	Transit	2017	Dressing et al. 2017	Confirmed Planet

K2-123 Stellar Parameters (10 Solutions)

RA: 08h57m46.59s

Dec: +21d27m11.79s

Distance: 161.555±0.652 pc

Parallax: 6.1609900±0.0248026 mas

Ecliptic Latitude: 4.08587 deg

Ecliptic Longitude: 130.79159 deg

Galactic Latitude: 36.91396 deg

Galactic Longitude: 205.51379 deg

Total Proper Motion: 59.9782225±0.0291520 mas/yr

Proper Motion (RA): -11.4801000±0.0435134 mas/yr

Proper Motion (Dec): -58.8693000±0.0284632 mas/yr

Photometry: m_V
14.781±0.034; m_TESS
13.1214000±0.0073636; m_J
11.907±0.020; m_H
11.250±0.023; m_Ks
11.055±0.022; m_Kep
14.102; m_W1
10.961±0.023; m_W2
10.981±0.021; m_W3
10.919±0.129; m_W4
8.525; m_Gaia
14.091600±0.000306; m_B
16.292±0.101

Mission: K2 : Observed in Campaigns 5, 16, 18

Tools: Planetary Systems; ExoFOP Target Overview Page; IRSA Finding Chart; K2 Names; K2 Planets and Candidates; K2 Targets; Stellar Hosts; K2 Time Series

Source	TICv8	Livingston et al. 2018	Gaia DR2	Hirano et al. 2018	Dressing et al. 2017	Kruse et al. 2019	Yu et al. 2018	Petigura et al. 2018	Pope et al. 2016	Barros et al. 2016
T_eff (K)	3856.0±157.0	4035±52	3872.37+611.21-123.37	3880±70	4075.669434+82.799957-81.137497	---	4040±80	---	---	---
L_✶ (log₁₀(L_⦿))	-1.13147+0.08757-0.10981	---	-1.0849253+0.0044366-0.0044824	-1.1+0.1-0.1	---	---	---	---	---	---
Metallicity (dex)	---	0.030±0.110 [Fe/H]	---	-0.020±0.120 [Fe/H]	---	---	---	---	---	---
M_✶ (M_⦿)	0.5954010±0.0203018	0.62±0.01	---	0.615±0.060	0.649093±0.064909	---	---	---	---	---
R_✶ (R_⦿)	0.609039±0.018130	0.59±0.01	0.6371420+0.0426235-0.1618720	0.592±0.059	0.571015+0.027528-0.027586	0.637 +0.162-0.043	0.598±0.007	0.64	---	---
log g (log₁₀(cm/s²))	4.6435900±0.0110498	4.69±0.01	---	4.686±0.049	---	---	4.671±0.013	---	---	---
ρ_✶ (g/cm³)	3.7156959±0.2054385	4.511+2.213-1.647	---	---	---	---	---	---	---	---

K2-123 b Planetary Parameters (8 Solutions)

Status: Confirmed Planet

Detected By: Transit

Tools: Planetary Systems; Transit Prediction Service; K2 Names; K2 Planets and Candidates; Transit

Source	Livingston et al. 2018	Hirano et al. 2018	Dressing et al. 2017	Kruse et al. 2019	Yu et al. 2018	Petigura et al. 2018	Barros et al. 2016	Pope et al. 2016
a/R_✶	61.21+5.96-12.59	61.6+6.4-15.3	61.89+2.70-2.69	57.2 +16.6-8.9	---	---	---	---
S (S_⨁)	---	2.7±0.6	2.9+0.5-0.4	---	---	---	---	---
ω (deg)	---	---	-33.5300000+134.1328280-109.3743350	---	---	---	---	---
e	---	---	0.0600000+0.1444150-0.0514580	---	---	---	---	---
i (deg)	---	---	89.79+0.14-0.17	---	---	---	---	---
P (days)	30.951524+0.003625-0.003320	30.9542±0.0022	30.956763+0.002589-0.002720	30.9540±0.0018	30.954222	30.952606 +0.003195-0.002888	30.96028326	30.953
R_p (R_⨁)	2.76±0.16	2.66+0.33-0.28	2.65±0.15	3.07 +0.80-0.45	2.5	3.0 +0.6-0.5	---	---
R_p (R_Jup)	0.246±0.014	0.237+0.029-0.025	0.236±0.013	0.274 +0.07-0.040	.22	0.27 +0.05-0.04	---	---
R_p/R_✶	0.0427+0.0030-0.0021	0.0413+0.0031-0.0015	0.042536+0.001350-0.001147	0.0442 +0.0028-0.0057	---	0.0429 +0.0052-0.0022	---	0.040566
a (au)	0.1649±0.0008	0.1641±0.0053	0.167+0.005-0.006	---	---	---	---	---
T_C (days)	2457147.49734+0.00438-0.00489 (BJD)	2457116.53953±0.00476 (BJD)	2457147.492±0.003 (BJD)	2457147.4926 +0.0023-0.0024 (BJD)	2458107.10848 (BJD)	2457147.49591 +0.004017-0.004360 (BJD)	2457147.486657 (BJD)	2457147.496 (BJD)
δ (%)	---	---	---	0.2117 +0.0087-0.009	0.1496	---	0.202±0.013	0.1646
T₁₄ (hours)	---	---	---	3.76800+0.16800-0.26400	3.28320	3.76080+0.19920-0.16080	4.11700+0.32600-0.32600	3.23592
b	0.39+0.30-0.27	---	---	---	---	0.43±0.29	---	0.152
T_eq (K)	338±5	---	---	---	---	---	---	---

Nearby Data (within 30 arcseconds) Browse Nearby Data

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Known Objects: 1 Confirmed Planets; 3 K2 Targets; 2 2MASS Point Source Catalog

Data Files: 1 SuperWASP Time Series; 1 KELT Praesepe Time Series; 2 K2 Time Series; 1 Associated Literature Data

Bibliography (13 References)

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
Planetary Candidates from K2 Campaign 16
Yu et al. 2018 Reference Overview
Exoplanets around Low-mass Stars Unveiled by K2
Hirano et al. 2018 Reference Overview
Planet Candidates from K2 Campaigns 5─8 and Follow-up Optical Spectroscopy
Petigura et al. 2018 Reference Overview
Characterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars. II. Planetary Systems Observed During Campaigns 1-7
Dressing et al. 2017 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

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