K2-263 Overview

K2-263 0.88 R_⦿ 5340.50 K

K2-263 b

0.224 R_Jup

Overview Parameters Nearby Data Bibliography 10 Legend Expand All

K2-263 Architecture & Discovery Information

Name	Orbital Separation	Planet Size	Method	Year	Reference	Disposition
K2-263
K2-263 b	50.82 d	2.51 R_⨁	Transit	2018	Mortier et al. 2018	Confirmed Planet

K2-263 Stellar Parameters (6 Solutions)

RA: 08h38m43.71s

Dec: +15d40m50.17s

Distance: 162.481+1.380-1.357
pc

Parallax: 6.1262400±0.0514419 mas

Ecliptic Latitude: -2.68033 deg

Ecliptic Longitude: 127.97982 deg

Galactic Latitude: 30.65614 deg

Galactic Longitude: 210.10377 deg

Total Proper Motion: 55.6001025±0.0809971 mas/yr

Proper Motion (RA): -55.3881000±0.0811856 mas/yr

Proper Motion (Dec): -4.8507500±0.0507464 mas/yr

Photometry: m_V
11.568±0.046; m_TESS
10.9027±0.0061; m_J
10.216±0.020; m_H
9.814±0.022; m_Ks
9.748±0.020; m_Kep
11.407; m_W1
9.709±0.022; m_W2
9.765±0.020; m_W3
9.649±0.056; m_W4
8.112001; m_Gaia
11.40550±0.00068; m_B
12.348±0.031; m_g
14.6406000±0.0099279; m_i
11.2809000±0.0009057; m_r
11.4548000±0.0006898; m_u
15.0835000±0.0077291; m_z
11.433900±0.002279

Abundances (Hypatia Catalog): [Fe/H] -0.29±0.04 dex; [Mg/H] 0.05±0.07 dex

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	Bonomo et al. 2023	TICv8	Mortier et al. 2018	Gaia DR2	Kruse et al. 2019	Mayo et al. 2018
T_eff (K)	5368±44	5363.7300+134.5490-73.3877	5368±44	5340.5+206.5-70.1	---	5410.0±50.0
L_✶ (log₁₀(L_⦿))	---	-0.2398038+0.0134064-0.0121581	-0.26+0.02-0.02	-0.2469965+0.0049542-0.0050114	---	---
γ (km/s)	---	---	29.99984±0.00059	31.098683813682968±1.186558185081961	---	---
R_✶ (R_⦿)	0.85±0.02	0.8786520+0.0335151-0.0496457	0.85±0.02	0.8790034+0.0235297-0.0642277	0.879 +0.064-0.024	0.837459 +0.040069-0.027294
Metallicity (dex)	-0.080±0.050 [Fe/H]	-0.00695410±0.01165120 [M/H]	-0.080±0.050 [M/H]	---	---	-0.04±0.08 [Fe/H]
v sin i (km/s)	---	---	<2.0	---	---	---
Age (Gyr)	7.0±4.0	---	7.0±4.0	---	---	---
ρ_✶ (g/cm³)	---	1.9307712+0.5509813-0.2690470	2.02±0.16	---	---	---
M_✶ (M_⦿)	0.88±0.03	0.92900000+0.13526900-0.09267190	0.88±0.03	---	---	---
log g (log₁₀(cm/s²))	---	4.5184500+0.1042070-0.0486635	4.51±0.08	---	---	4.58±0.1
Sp. T	---	---	G9 V	---	---	---

K2-263 b Planetary Parameters (5 Solutions)

Status: Confirmed Planet

Detected By: Radial Velocity, Transit

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

Source	Palethorpe et al. 2026	Bonomo et al. 2023	Mortier et al. 2018	Kruse et al. 2019	Mayo et al. 2018
T_eq (K)	482+7-8	470±7	470±10	---	---
S (S_⨁)	---	8.17±0.52	---	---	---
M_p (M_⨁)	15.4+2.4-2.5	14.9±2.1	14.8±3.1	---	---
M_p (M_Jup)	0.0485+0.0076-0.0079	0.0469±0.0066	0.0466±0.0098	---	---
e	0.0800+0.0890-0.0570	<0.15	<0.14	---	---
i (deg)	89.271+0.045-0.035	89.240+0.050-0.070	89.24+0.05-0.07	---	89.723373 +0.202144-0.399914
P (days)	50.819172+0.000066-0.000068	50.818947±0.000094	50.818947±0.000094	50.8213±0.0023	50.819331 +0.002404-0.002537
ρ (g/cm³)	5.6504+1.1330-1.0972	5.8+1.3-1.1	5.7+1.6-1.4	---	---
R_p (R_⨁)	2.513+0.110-0.095	2.41±0.12	2.41±0.12	2.18 +0.20-0.28	2.16538588721 +0.205713276335-0.118722438567
R_p (R_Jup)	0.2242+0.0098-0.0085	0.215±0.011	0.215±0.011	0.194 +0.02-0.025	0.19 +0.02-0.01
K (m/s)	2.91+0.45-0.46	2.83±0.39	2.82±0.58	---	---
a (au)	0.2573+0.0029-0.0030	0.2573±0.0030	0.2573±0.0029	---	---
T_C (days)	2459534.0662+0.0020-0.0021 (BJD)	2458111.1274±0.0012 (BJD-TDB)	2458111.1274±0.0012 (BJD-TDB)	2457145.566±0.0017 (BJD)	2457145.56759 +0.001737-0.001818 (BJD)
a/R_✶	65.06+0.90-0.93	---	64.7+2.4-2.5	103 +27-13	103.857592 +14.558805-34.325822
R_p/R_✶	0.0271±0.0013	---	0.0260+0.0013-0.0010	0.0228 +0.0012-0.0029	0.023705 +0.001946-0.001045
δ (%)	---	---	---	0.0582±0.0021	---
T₁₄ (hours)	3.7496+0.4305-0.5247	---	3.487±0.091	3.40800+0.09600-0.12000	---
b	0.8315+0.0587-0.0945	---	0.84+0.03-0.06	---	---

Nearby Data (within 30 arcseconds) Browse Nearby Data

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

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

Bibliography (10 References)

Constraining small planet compositions for future missions
Palethorpe et al. 2026 Reference Overview
Cold Jupiters and improved masses in 38 Kepler and K2 small planet systems from 3661 HARPS-N radial velocities. No excess of cold Jupiters in small planet systems
Bonomo et al. 2023 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
K2-263 b: a 50 d period sub-Neptune with a mass measurement using HARPS-N
Mortier 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
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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