IPAC Logo
NASA
Exoplanet
Archive
A
service of
NASA
Exoplanet
Science
Institute

K2-99 Overview

  • Star: K2-99
    • Stellar Radius: 2.55 Solar Radius
    • Stellar Effective Temperature: 6069.00 K
    • Planet: K2-99 b
      • Disposition Confirmed
      • Planet Radius 1.060 Jupiter Radius
    • Planet: K2-99 c
      • Disposition Confirmed

K2-99 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-99
K2-99 b 18.25 d 11.88 R⨁ Transit 2016 Smith et al. 2017 Confirmed Planet
K2-99 c 522.2 d > 2669.76 M⨁ Radial Velocity 2022 Smith et al. 2022 Confirmed Planet
RA
13h55m05.70s
Dec
-05d26m32.98s
Distance
519.229+12.998-12.389
pc
Parallax
1.8983600±0.0466995 mas
Ecliptic Latitude
5.9458 deg
Ecliptic Longitude
208.67834 deg
Galactic Latitude
53.97598 deg
Galactic Longitude
330.5855 deg
Total Proper Motion
2.0139273±0.0600154 mas/yr
Proper Motion (RA)
-0.3229180±0.0769508 mas/yr
Proper Motion (Dec)
-1.9878700±0.0595033 mas/yr
Photometry
mV 11.149±0.013
mTESS 10.5593±0.0090
mJ 10.024±0.022
mH 9.755±0.022
mKs 9.720±0.021
mKep 11.014
mW1 9.685±0.021
mW2 9.714±0.020
mW3 9.721±0.047
mW4 8.85
mGaia 10.948500±0.000567
mB 11.751±0.190
mg 11.3748000±0.0004857
mi 10.9082000±0.0005113
mr 11.00810±0.00063
mu 14.7016000±0.0086614
mz 13.0903000±0.0140154
Abundances
(Hypatia Catalog)
[Fe/H] 0.07±0.04 dex
[Mg/H] -0.01±0.07 dex
Mission
K2: Observed in Campaigns 6, 17
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
K2 Names
K2 Planets and Candidates
K2 Targets
Stellar Hosts
K2 Time Series
Source Howard et al. 2025 Smith et al. 2022 TICv8 Livingston et al. 2018 Gaia DR2 Mayo et al. 2018 Smith et al. 2017 Kruse et al. 2019 Petigura et al. 2018 Pope et al. 2016
Teff
(K)
6053.0±100.0 6069±92
6073.270+123.216-145.542
 6217±78
5993.267+519.613-143.267
 6033.0±50.0 5990±40 --- --- ---
L✶
(log10(L⦿))
---
0.899+0.024-0.026
0.9610762+0.0309535-0.0244837
 ---
0.9310785+0.0146978-0.0152127
 --- --- --- --- ---
Metallicity
(dex)
0.240±0.044 [Fe/H] 0.20±0.07 [Fe/H] 0.169±0.015 [M/H] 0.21±0.06 [Fe/H] --- 0.15±0.08 [Fe/H] 0.20±0.05 [Fe/H] --- --- ---
γ
(km/s)
--- -2.855±0.005 --- --- -2.3325056379724565±0.6761083983927655 --- -2.08±0.01 --- --- ---
Age
(Gyr)
--- 3.7±0.4 --- --- --- ---
2.4+0.2-0.6
 --- --- ---
M✶
(M⦿)
1.48±0.12 1.44±0.03
1.140000+0.148079-0.165775
 1.63±0.04 ---
1.424556 +0.095378-0.107159
1.60+0.14-0.10
 --- --- ---
R✶
(R⦿)
2.66±0.11 2.55±0.02
2.73115+0.14840-0.16557
 2.63±0.07
2.7093472+0.1343290-0.4150700
2.276457 +0.320083-0.257309
3.1±0.1
2.71 +0.42-0.13
1.98 ---
log g
(log10(cm/s2))
3.90±0.08 3.783±0.004
3.6222800+0.0833961-0.0973954
 3.81±0.02 --- 3.78±0.1 3.67±0.04 --- --- ---
v sin i
(km/s)
9.40±1.00 --- --- --- --- --- 9.3±0.5 --- --- ---
S Index
0.119 --- --- --- --- --- --- --- --- ---
CAII LOG RHK
-5.393 --- --- --- --- --- --- --- --- ---
ρ✶
(g/cm3)
--- ---
0.0788922+0.0204643-0.0186438
0.0990+0.0320-0.0270
 --- --- 0.078±0.003 --- --- ---
Sp. T
--- --- --- --- --- --- G0 IV --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Source Smith et al. 2022 Howard et al. 2025 Livingston et al. 2018 Mayo et al. 2018 Smith et al. 2017 Kruse et al. 2019 Petigura et al. 2018 Pope et al. 2016
Teq
(K)
1184±19
1108.0+34.0-33.0
 1113±21 --- --- --- --- ---
S
(S⨁)
---
357.0+46.0-41.0
 --- --- --- --- --- ---
Mp
(M⨁)
277±6
287.0+23.0-22.0
 --- --- 308±29 --- --- ---
Mp
(MJup)
0.87±0.02
0.9030+0.0724-0.0692
 --- --- 0.970±0.090 --- --- ---
P
(days)
18.24783±0.00003 18.24901±0.00062 18.251985±0.001399
18.248708 +0.000634-0.000572
18.249±0.001
18.24841 +0.00053-0.00055
18.252213 +0.001438-0.001419
18.25
ρ
(g/cm3)
---
0.900+0.150-0.130
 --- --- --- --- --- ---
Rp
(R⨁)
11.9±0.1
12.37+0.18-0.10
 11.73±0.42
10.5358595501 +1.5095613911-1.20731555932
14.5±0.6
12.48 +1.95-0.87
8.3 +1.3-1.2
---
Rp
(RJup)
1.06±0.01
1.104+0.016-0.009
 1.046±0.037
0.939946431 +0.134674047-0.107709480
1.29±0.05
1.113 +0.174-0.078
0.74 +0.12-0.11
---
TC
(days)
2458182.7133±0.0005
(BJD-TDB)
2457233.8255±0.0012
(BJD)
2457233.82366+0.00255-0.00261
(BJD)
2457233.82597 +0.001104-0.001160
2457233.823±0.003
(BJD-TDB)
2457233.82582 +0.00098-0.00096
(BJD)
2457233.82485 +0.002602-0.002524
(BJD)
2457233.823
(BJD)
a/R✶
13.1±0.1 ---
12.01+0.87-1.69
11.418816 +1.289520-1.565156
11.1±0.1 11.1±1.4 --- ---
b
0.34±0.05 ---
0.39+0.22-0.24
 --- 0.41±0.05 ---
0.38 +0.23-0.25
0.343
ω
(deg)
334±4 --- --- --- 8.0±8.0 --- --- ---
e
0.22±0.01 --- --- --- 0.19±0.04 --- --- ---
i
(deg)
88.6±0.2 --- ---
87.632965 +1.633927-1.444101
87.7±0.3 --- --- ---
Rp/R✶
0.0426±0.0004 ---
0.0408+0.0013-0.0007
0.042431 +0.001169-0.000800
0.0422±0.0006
0.0422 +0.0012-0.0021
0.0385 +0.0013-0.0007
0.042143
K
(m/s)
54±1 --- --- --- 56±4 --- --- ---
a
(au)
0.153±0.001 --- 0.1597±0.0012 --- 0.159±0.006 --- --- ---
T14
(hours)
11.1±0.2 --- --- --- 12±0
11.49600+0.12000-0.14400
11.04960+0.16080-0.11040
 10.86792
δ
(%)
--- --- --- --- --- 0.193±0.0017 --- 0.1776
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
K2 Names
Source Smith et al. 2022
Tp
(days)
2458025.6±2.8
(BJD-TDB)
Teq
(K)
390±6
ω
(deg)
13±2
Mp sin i
(M⨁)
2670±64
Mp sin i
(MJup)
8.4±0.2
e
0.210±0.009
P
(days)
522.2±1.4
K
(m/s)
170±2
a
(au)
1.43±0.01
T14
(hours)
<33.6
TC
(days)
2458104.2±1.5
(BJD-TDB)
Print
Known Objects
2 Confirmed Planets
2 K2 Targets
1 2MASS Point Source Catalog
Data Files
2 K2 Time Series
2 Associated Literature Data
  • System
  • Star
  • Confirmed
  • Candidate
  • False Positive Planet
  • Controversial
  • False Positive
  • Aliases
  • Data Access
  • Transit Prediction Service
  • Time Series
  • Kepler | K2
  • External Link
  • Search
  • Browse
  • Download

NASA Exoplanet Archive is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program.