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Qatar-2 Overview

  • Star: Qatar-2
    • Stellar Radius: 0.71 Solar Radius
    • Stellar Effective Temperature: 4645.00 K
    • Planet: Qatar-2 b
      • Disposition Confirmed
      • Planet Radius 1.254 Jupiter Radius

Qatar-2 Architecture & Discovery Information

Name Orbital Separation Planet Size Method Year Reference Disposition
Qatar-2
Qatar-2 b 1.34 d 14.06 R⨁ Transit 2011 Bryan et al. 2011 Confirmed Planet
Qatar-2 b
RA
13h50m37.32s
Dec
-06d48m14.66s
Distance
181.374+1.218-1.203
pc
Parallax
5.4849000±0.0365103 mas
Ecliptic Latitude
4.28004 deg
Ecliptic Longitude
208.1145 deg
Galactic Latitude
53.16778 deg
Galactic Longitude
327.95632 deg
Total Proper Motion
89.5001770±0.0661233 mas/yr
Proper Motion (RA)
-88.1844000±0.0655776 mas/yr
Proper Motion (Dec)
-15.290300±0.082237 mas/yr
Photometry
mV 13.443±0.160
mTESS 12.3164±0.0062
mJ 11.350±0.026
mH 10.794±0.022
mKs 10.619±0.021
mKep 13.009
mW1 10.563±0.022
mW2 10.642±0.022
mW3 10.533±0.077
mW4 8.6
mGaia 13.027600±0.000721
mB 14.582±0.022
mg 14.9689000±0.0050921
mi 12.7252000±0.0021941
mr 13.0988000±0.0026459
mu 16.5598000±0.0076532
mz 12.9590000±0.0048205
Abundances
(Hypatia Catalog)
[Fe/H] 0.15±0.04 dex
[Na/H] 0.24±0.04 dex
[Mg/H] 0.10±0.07 dex
[Al/H] 0.22±0.06 dex
[Si/H] 0.16±0.05 dex
[Ca/H] 0.22±0.06 dex
[BaII/H] 0.08±0.19 dex
Mission
K2: Observed in Campaign 6
Tools
Planetary Systems
ExoFOP Target Overview Page
IRSA Finding Chart
K2 Planets and Candidates
K2 Targets
Stellar Hosts
K2 Time Series
Source Yalçınkaya et al. 2024 TICv8 Gaia DR2 Močnik et al. 2017 Bonomo et al. 2017 Dai et al. 2017 Maxted et al. 2015 Mancini et al. 2014 Bryan et al. 2011 Kruse et al. 2019 Petigura et al. 2018 Barros et al. 2016 Pope et al. 2016
Teff
(K)
4645±50
4459.000+119.856-127.452
4649.140+110.430-29.898
 --- 4645±50 4645±50 --- 4645±50 4645±50 --- --- --- ---
Metallicity
(dex)
--- --- --- --- 0.020±0.080 -0.02±0.08 [Fe/H] 0.149 [Fe/H] 0.02±0.08 [M/H] 0.02±0.08 [m/H] --- --- --- ---
v sin i
(km/s)
--- --- --- --- 2.80±0.50 2.8±0.5 --- 3.28±0.04 2.8 --- --- --- ---
ρ✶
(g/cm3)
---
2.2177555+0.7046876-0.6040288
 --- 2.947±0.021 --- --- --- 2.241±0.023 2.89±0.17 --- --- --- ---
M✶
(M⦿)
---
0.6990000+0.0868297-0.0755920
 --- 0.727±0.024 0.743±0.020 0.740±0.037 0.751 0.743±0.021 0.740±0.037 --- --- --- ---
R✶
(R⦿)
---
0.7630910+0.0656015-0.0581070
0.66292840+0.00860936-0.03040530
 0.7033±0.0080 0.776±0.007 0.713±0.018 --- 0.776±0.008 0.713±0.018
0.6629 +0.0304-0.0086
0.66 --- ---
log g
(log10(cm/s2))
---
4.5173900+0.1085750-0.0861421
 --- --- --- 4.601±0.018 --- 4.530±0.005 4.601±0.018 --- --- --- ---
L✶
(log10(L⦿))
---
-0.6832030+0.0254389-0.0214901
-0.73288147+0.00611368-0.00620100
 --- --- --- --- --- --- --- --- --- ---
γ
(km/s)
--- --- -23.54858241937268±0.92047475249340 --- --- --- --- --- --- --- --- --- ---
Age
(Gyr)
--- --- --- --- 7.0±7.0 1.4±0.3 17.50 5.0 --- --- --- --- ---
Prot
(days)
--- --- --- 18.0±0.2 --- 18.5±1.9 --- --- --- --- --- --- ---
Print
Status
Confirmed Planet
Detected By
Radial Velocity, Transit
Tools
Planetary Systems
Transit Prediction Service
K2 Planets and Candidates
Transit
Atmospheric Spectroscopy
Source Mancini et al. 2014 Yalçınkaya et al. 2024 Kokori et al. 2023 Ivshina & Winn 2022 Kokori et al. 2022 Močnik et al. 2017 Bonomo et al. 2017 Dai et al. 2017 Bryan et al. 2011 Kruse et al. 2019 Petigura et al. 2018 Barros et al. 2016 Pope et al. 2016
Teq
(K)
1344±14 --- --- --- --- 1285±16 --- --- 1292±19 --- --- --- ---
Mp
(M⨁)
792.635±17.162 --- --- --- --- 783.8±19.7 785.0±16.5 826±286 790.410±27.332 --- --- --- ---
Mp
(MJup)
2.494±0.054 --- --- --- --- 2.466±0.062 2.470±0.052 2.6±0.9 2.487±0.086 --- --- --- ---
e
0 --- --- --- --- 0 <0.011 0 0 --- --- --- ---
i
(deg)
86.12±0.08 --- 88.99±0.20 --- --- 88.99±0.20 86.120±0.080 89.7±0.5 88.30±0.94 --- --- --- ---
P
(days)
1.33711647±0.00000026 1.337116440±0.000000032 1.337116562±0.000000059 1.3371164±0.0000011 1.33711716±0.00000012 1.33711677±0.00000010 1.33711647±0.00000026 1.337116553±0.000000044 1.3371182±0.0000037 1.33711569±0.00000063 1.337116±0.000002 1.33711405 1.337
ρ
(g/cm3)
1.573±0.029 --- --- --- --- 2.356±0.045
1.552+0.057-0.054
 --- 2.208±0.173 --- --- --- ---
Rp
(R⨁)
14.056±0.146 --- --- --- --- 12.50±0.15 14.06±0.13 12.89±0.34 12.823±0.392
11.85 +0.56-0.20
11.5±4.6 --- ---
Rp
(RJup)
1.254±0.013 --- --- --- --- 1.115±0.013 1.254±0.012 1.150±0.030 1.144±0.035
1.057 +0.050-0.02
 1.03±0.41 --- ---
Rp/R✶
0.16590±0.00044 --- 0.16327±0.00019 --- --- --- --- 0.16208±0.00018 ---
0.1638 +0.0019-0.0018
0.1599 +0.0002-0.0001
--- 0.176536
K
(m/s)
558.7±5.9 --- --- --- --- 560.9±6.3
554.1+6.0-5.8
 --- 558.7±5.9 --- --- --- ---
a
(au)
0.02153±0.00020 --- --- --- --- 0.02136±0.00024
0.02153+0.00020-0.00019
 0.02160±0.00057 0.02149±0.00036 --- --- --- ---
TC
(days)
2455624.267096±0.000087
(BJD-TDB)
2457218.1101306±0.0000063
(BJD-TDB)
2457008.182780±0.000032
(BJD-TDB)
2456030.75054±0.00015
(BJD-TDB)
2457173.98591±0.00003
(BJD-TDB)
2457250.2008155±0.0000084
(BJD)
2455624.267096±0.000087
(BJD-TDB)
2455617.581506±0.000054
(BJD)
2455624.26679±0.00011
(BJD-TDB)
2457218.11004±0.000023
(BJD)
2457222.12138±0.000052
(BJD)
2457226.132853
(BJD)
2457218.11
(BJD)
b
--- --- --- --- --- 0.115±0.023 --- 0.03±0.06 0.19±0.10 ---
0.03 +0.04-0.02
--- 0.641
δ
(%)
--- --- --- --- --- 2.66587±0.00620 --- --- 2.725±0.040
3.3335 +0.0041-0.004
--- 3.217±0.006 3.1165
T14
(hours)
--- --- --- --- --- 1.8098±0.0011 --- --- 1.80960±0.01176
1.83168+0.00600-0.00648
 1.85040
1.84400+0.00600-0.00600
 1.50696
a/R✶
--- ---
6.45+0.05-0.06
 --- --- --- ---
6.51466+0.00765-0.00763
 ---
6.432 +0.077-0.068
--- --- ---
λ
(deg)
--- --- --- --- --- 0±8 --- --- --- --- --- --- ---
Print
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Radial Velocity Curve     44 Optical Spectra Bryan et al. 2011
Known Objects
1 Confirmed Planets
1 K2 Targets
1 2MASS Point Source Catalog
Data Files
1 K2 Time Series
1 Associated Literature Data
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