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K2-73 Overview

  • Star: K2-73
    • Stellar Radius: 1.06 Solar Radius
    • Stellar Effective Temperature: 5922.00 K
    • Planet: K2-73 b
      • Disposition Confirmed
      • Planet Radius 0.230 Jupiter Radius
    • Planet: K2-73 c
      • Disposition Confirmed

K2-73 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
K2-73
K2-73 b 7.5 d 2.58 R⨁ Transit 2016 Crossfield et al. 2016 Confirmed Planet
K2-73 c 1000 d > 1142 M⨁ Radial Velocity 2025 Howard et al. 2025 Confirmed Planet
K2-73 b
RA
22h20m06.16s
Dec
-09d03m21.92s
Distance
269.183+2.539-2.493
pc
Parallax
3.6864300±0.0344589 mas
Ecliptic Latitude
1.22851 deg
Ecliptic Longitude
333.55638 deg
Galactic Latitude
-49.98864 deg
Galactic Longitude
52.5209 deg
Total Proper Motion
50.2007714±0.0615324 mas/yr
Proper Motion (RA)
49.2720000±0.0615905 mas/yr
Proper Motion (Dec)
9.6118400±0.0599855 mas/yr
Photometry
mV 11.345±0.034
mTESS 11.2821±0.0061
mJ 10.695±0.026
mH 10.382±0.022
mKs 10.322±0.021
mKep 11.745
mW1 10.293±0.023
mW2 10.335±0.020
mW3 10.223±0.070
mW4 8.891
mGaia 11.714600±0.000289
mB 12.433±0.356
mg 12.4143000±0.0014095
mi 13.2337000±0.0047745
mr 11.8450000±0.0011792
mu 14.3929000±0.0045608
mz 12.5888000±0.0045115
Abundances
(Hypatia Catalog)
[Fe/H] 0.08±0.06 dex
[C/H] 0.03±0.09 dex
[O/H] -0.07±0.09 dex
[Na/H] -0.10±0.04 dex
[Mg/H] 0.09±0.07 dex
[Al/H] -0.09±0.06 dex
[Si/H] -0.03±0.05 dex
[Ca/H] 0.05±0.06 dex
[Y/H] 0.09±0.08 dex
Mission
K2: Observed in Campaign 3
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 TICv8 Gaia DR2 Mayo et al. 2018 Crossfield et al. 2016 Kruse et al. 2019 Barros et al. 2016 Schmitt et al. 2016 Vanderburg et al. 2016
Teff
(K)
5867.0±100.0
5865.0000+128.1910-95.1484
5732.6665+70.0835-151.5170
 5844.0±50.0 5922±76 --- --- --- 6634
M✶
(M⦿)
1.02±0.04
1.061000+0.140148-0.112087
 ---
1.043192 +0.025665-0.027360
1.050±0.030 --- --- --- ---
R✶
(R⦿)
1.058±0.039
1.0572100+0.0533608-0.0415136
1.0788460+0.0593720-0.0259024
1.051008 +0.131147-0.070573
1.060±0.070
1.079 +0.026-0.059
--- --- 1.77
log g
(log10(cm/s2))
4.390±0.081
4.4154600+0.0897971-0.0555310
 --- 4.35±0.1 4.409±0.057 --- --- --- ---
Metallicity
(dex)
0.040±0.044 [Fe/H] 0.030±0.100 [M/H] --- 0.09±0.08 [Fe/H] --- --- --- --- ---
L✶
(log10(L⦿))
---
0.076089308+0.015768170-0.019348606
0.054040320+0.006171783-0.006260757
 --- --- --- --- --- ---
γ
(km/s)
--- --- -38.40547541026231±0.93157576652786 --- --- --- --- --- ---
ρ✶
(g/cm3)
---
1.2658929+0.3389744-0.1732521
 --- --- --- --- --- --- ---
v sin i
(km/s)
2.0±1.0 --- --- --- --- --- --- --- ---
S Index
0.1586 --- --- --- --- --- --- --- ---
CAII LOG RHK
-4.999 --- --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Names
K2 Planets and Candidates
Transit
Source Howard et al. 2025 Mayo et al. 2018 Crossfield et al. 2016 Kruse et al. 2019 Barros et al. 2016 Schmitt et al. 2016 Vanderburg et al. 2016
P
(days)
7.49556±0.00029
7.495692 +0.000279-0.000283
7.49543±0.00059 7.49569±0.00025 7.49491004
7.495 +0.0084-0.0069
7.4956613
δ
(%)
--- --- ---
0.0589 +0.0012-0.0013
0.058±0.001 --- 0.0603
T14
(hours)
--- --- 3.620±0.085
3.59040+0.06720-0.08880
3.83000+0.13500-0.13500
3.52800+0.07200-0.12000
 3.51000
TC
(days)
2456987.6726±0.0012
(BJD)
2456980.17657 +0.001433-0.001327
2456987.6741±0.0023
(BJD-TDB)
2456980.1755±0.0012
(BJD)
2456987.675542
(BJD)
2456987.6728 +0.0013-0.0018
(BJD)
2456980.177
(BJD)
Teq
(K)
968.0±25.0 --- --- --- --- --- ---
S
(S⨁)
209.0+23.0-21.0
 --- 213±30 --- --- --- ---
Mp
(M⨁)
9.20+3.80-3.70
 --- --- --- --- --- ---
Mp
(MJup)
0.0289+0.0120-0.0116
 --- --- --- --- --- ---
ρ
(g/cm3)
2.8+1.3-1.2
 --- --- --- --- --- ---
Rp
(R⨁)
2.58+0.13-0.06
2.6253911509 +0.362051901362-0.190863836641
2.45±0.21
2.71 +0.11-0.29
--- --- 4.74
Rp
(RJup)
0.230+0.012-0.005
0.2342217103 +0.0323001072-0.0170277310
0.219±0.019
0.242 +0.0098-0.026
 --- --- 0.423
a/R✶
---
15.108184 +1.394212-3.187118
---
14.9 +3.3-1.4
---
11.8 +3.6-3.7
---
i
(deg)
---
88.443035 +1.107666-1.798170
--- --- ---
86.7 +2.4-2.9
---
Rp/R✶
---
0.022901 +0.001345-0.000638
0.0210±0.0012
0.02300 +0.00080-0.00212
---
0.0239 +0.0035-0.0021
0.02273
b
--- --- --- --- ---
0.28 +0.57-1.01
0.20
a
(au)
--- --- 0.07619±0.00072 --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity
Tools
Planetary Systems
K2 Names
Source Howard et al. 2025
Teq
(K)
186.1+6.6-7.2
S
(S⨁)
0.285±0.042
Mp sin i
(M⨁)
1142.0+53.0-45.0
Mp sin i
(MJup)
3.5931+0.1668-0.1416
P
(days)
1000.00±100.00
TC
(days)
2456905.0+62.0-99.0
(BJD)
Print
Known Objects
2 Confirmed Planets
1 K2 Targets
1 2MASS Point Source Catalog
Data Files
1 K2 Time Series
2 Associated Literature Data
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  • Candidate
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