K2-180 | NASA Exoplanet Archive

Host	Planet	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
K2-180	K2-180 b	8.87 d	2.47 R_⨁	Transit	2018	Mayo et al. 2018	Confirmed Planet

Exoplanet Archive Notes (1)

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K2-180 b

Equilibrium temperature was calculated assuming a Bond albedo of 0.3. (Korth et al. 2019)

K2-180 Stellar Parameters (12 Solutions)

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RA: 08h25m51.45s

Dec: +10d14m47.68s

Distance: 203.896+1.742-1.712
pc

Parallax: 4.8759800±0.0412297 mas

Ecliptic Latitude: -8.71935 deg

Ecliptic Longitude: 126.27261 deg

Galactic Latitude: 25.58211 deg

Galactic Longitude: 214.28896 deg

Total Proper Motion: 131.9404907±0.0614532 mas/yr

Proper Motion (RA): 97.0976000±0.0722584 mas/yr

Proper Motion (Dec): -89.3328000±0.0454933 mas/yr

Photometry: m_V
12.557±0.046; m_TESS
11.8964±0.0060; m_J
11.146±0.023; m_H
10.747±0.026; m_Ks
10.677±0.026; m_Kep
12.393; m_W1
10.619±0.023; m_W2
10.667±0.023; m_W3
10.599±0.099; m_W4
8.927; m_Gaia
12.4039±0.0002; m_B
13.334±0.009; m_g
15.3888000±0.0109563; m_i
14.5213000±0.0095595; m_r
14.9587000±0.0103022; m_u
15.2991000±0.0065822; m_z
13.684600±0.008919

Mission: K2 : Observed in Campaigns 5, 18

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

Source	Howard et al. 2025	Thygesen et al. 2023	Castro-González et al. 2022	TICv8	Korth et al. 2019	Livingston et al. 2018	Gaia DR2	Mayo et al. 2018	Kruse et al. 2019	Petigura et al. 2018	ExoFOP	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eff (K)	5166.0±100.0	5365.0±92.0	5306+45-40	5368.000+123.457-130.564	5110±107	5358±65	5375.50+27.25-21.25	5263.0±50.0	---	---	5368.00±127.01	---
Metallicity (dex)	-0.710±0.045 [Fe/H]	-0.578+0.079-0.080 [Fe/H]	-0.50+0.07-0.06 [Fe/H]	---	-0.65±0.10 [Fe/H]	-0.54±0.06 [Fe/H]	---	-0.59±0.08 [Fe/H]	---	---	---	---
M_✶ (M_⦿)	0.67±0.02	0.735+0.035-0.029	0.72+0.04-0.03	0.9300000+0.1238710-0.1163040	0.71±0.03	0.72±0.03	---	0.730322 +0.020348-0.021723	---	---	---	---
R_✶ (R_⦿)	0.638±0.020	0.719+0.025-0.023	0.72±0.01	0.6974390+0.0389663-0.0389432	0.69±0.02	0.72±0.01	0.68674410+0.00546190-0.00691003	0.681111 +0.021030-0.016198	0.6867 +0.0069-0.0055	0.65	0.697439014911652±0.038954700000000	---
log g (log₁₀(cm/s²))	4.630±0.081	4.591+0.034-0.033	4.57±0.03	4.7195400+0.0955389-0.0784182	4.3±0.2	4.58±0.03	---	4.7±0.1	---	---	4.7195400±0.0869785	---
L_✶ (log₁₀(L_⦿))	---	-0.413+0.015-0.016	---	-0.4390428+0.0123907-0.0156368	---	---	-0.45003998+0.00528910-0.00535428	---	---	---	---	---
ρ_✶ (g/cm³)	---	2.79+0.31-0.28	---	3.8648273+1.0237722-0.8190668	3.039±0.393	3.375+2.044-1.462	---	---	---	---	---	---
γ (km/s)	---	---	---	---	-76.855±0.001	---	---	---	---	---	---	---
v sin i (km/s)	0.10±1.00	---	---	---	2.1±1.0	---	---	---	---	---	---	---
Age (Gyr)	---	7.50+4.40-4.70	---	---	9.50+4.00-5.60	---	---	---	---	---	---	---
Sp. T	---	---	---	---	K2 V	---	---	---	---	---	---	---
P_rot (days)	---	---	---	---	15.7±7.5	---	---	---	---	---	---	---
S Index	0.2003	---	---	---	---	---	---	---	---	---	---	---
CAII LOG RHK	-4.916	---	---	---	---	---	---	---	---	---	---	---

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K2-180 b Planetary Parameters (10 Solutions)

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Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Thygesen et al. 2023	Howard et al. 2025	Castro-González et al. 2022	Korth et al. 2019	Livingston et al. 2018	Mayo et al. 2018	Kruse et al. 2019	Petigura et al. 2018	ExoFOP	Pope et al. 2016	Show Candidate Solutions >>	<< Hide Candidate Solutions
T_eq (K)	797.5+8.4-8.5	672.0±17.0	802+55-41	729±49	731±11	---	---	---	691.337612714714	---
S (S_⨁)	---	48.3+5.2-4.7	---	67±14	---	---	---	---	53.9860738232294	---
P (days)	8.865663+0.000011-0.000010	8.8656±0.0004	8.8656511+0.0000151-0.0000152	8.8665±0.0003	8.867209+0.001068-0.001016	8.865932 +0.000322-0.000326	8.86638 +0.00044-0.00041	8.867259 +0.001170-0.001599	8.86528860869203±0.00018843426000	8.866
R_p (R_⨁)	2.466+0.110-0.096	2.13+0.11-0.05	2.52+0.24-0.10	2.24±0.12	2.31±0.16	2.41012773202 +0.205917892961-0.109730591442	2.51 +0.18-0.35	4.4 +5.9-2.0	4.28539694162051±6.51906440000000	---
R_p (R_Jup)	0.2200+0.0098-0.0086	0.190+0.010-0.004	0.225+0.021-0.009	0.200±0.011	0.206±0.014	0.2150171944 +0.0183707639-0.0097895077	0.224 +0.016-0.031	0.39 +0.53-0.18	0.382318165791873±0.581592972142418	---
δ (%)	0.09870+0.00440-0.00340	---	---	0.12±0.05	---	---	0.1189±0.0032	---	0.169994422117774±0.036267640000000	0.1028
T₁₄ (hours)	2.8488+0.0480-0.0456	---	---	2.98±0.07	---	---	2.95200+0.12000-0.16800	0.300000+1.180800-0.199200	3.29045177249489±0.56824654000000	2.67888
T_C (days)	2457489.15660+0.00078-0.00076 (BJD-TDB)	2457143.3945±0.0023 (BJD)	2457143.3959512+0.0012311-0.0011967 (BJD)	2457143.390±0.002 (BJD)	2457143.38934+0.00448-0.00453 (BJD)	2457143.3955 +0.001619-0.001587	2457143.3922 +0.0018-0.0022 (BJD)	2457143.35797 +0.019987-0.011485 (BJD)	2459235.70675800±0.00846432 (BJD)	2457143.397 (BJD)
a/R_✶	22.63+0.82-0.79	---	21.93+2.36-6.55	22.2±1.9	24.12+2.86-6.05	21.600908 +2.815460-6.289899	19.7 +7.1-4.0	---	---	---
R_p/R_✶	0.03141+0.00069-0.00055	---	0.0320+0.0031-0.0011	0.0297±0.0008	0.0294+0.0024-0.0017	0.032441 +0.002584-0.001259	0.0335 +0.0024-0.0046	0.0615 +0.0829-0.0279	---	0.032056
b	0.33+0.17-0.20	---	0.46+0.33-0.31	0.4±0.2	0.42+0.32-0.28	---	---	0.63 +0.38-0.43	---	0
a (au)	0.0756+0.0012-0.0010	---	0.0734+0.0080-0.0219	0.075±0.001	0.0753±0.0010	---	---	---	---	---
ω (deg)	130.0+120.0-110.0	---	---	90	---	---	---	---	---	---
M_p (M_⨁)	11.4+2.4-2.2	9.40±2.20	---	11±2	---	---	---	---	---	---
M_p (M_Jup)	0.0359+0.0075-0.0068	0.0296±0.0069	---	0.036±0.006	---	---	---	---	---	---
e	0.0750+0.0800-0.0510	---	---	0	---	---	---	---	---	---
i (deg)	89.15+0.51-0.38	---	---	88.9±0.7	---	88.729678 +0.950108-1.682103	---	---	---	---
ρ (g/cm³)	4.16+1.10-0.92	4.6+1.4-1.2	---	5.6±1.9	---	---	---	---	---	---
K (m/s)	4.36+0.90-0.82	---	---	4.4±0.7	---	---	---	---	---	---