HR 8799 Overview

HR 8799 1.49 R⦿ 7204.58 K
HR 8799 b
1.200 RJup
HR 8799 c
1.200 RJup
HR 8799 d
1.200 RJup
HR 8799 e
1.170 RJup
Discovery Data
Host Planet Method Year Reference Disposition
HR 8799 HR 8799 b Imaging 2008 Marois et al. 2008 Confirmed Planet
HR 8799 HR 8799 c Imaging 2008 Marois et al. 2008 Confirmed Planet
HR 8799 HR 8799 d Imaging 2008 Marois et al. 2008 Confirmed Planet
HR 8799 HR 8799 e Imaging 2010 Marois et al. 2010 Confirmed Planet
HR 8799 HR 8799 b HR 8799 c HR 8799 d HR 8799 e
RA
23h07m28.84s
Dec
+21d08m02.54s
Distance
41.2441+0.1515-0.1505
pc
Parallax
24.2175000±0.0880942 mas
Ecliptic Latitude
24.52435 deg
Ecliptic Longitude
356.78792 deg
Galactic Latitude
-35.57552 deg
Galactic Longitude
92.7646 deg
Total Proper Motion
119.0689573±0.1652303 mas/yr
Proper Motion (RA)
108.301000±0.167781 mas/yr
Proper Motion (Dec)
-49.48040±0.15242 mas/yr
Photometry
mV
5.98±0.01
mTESS
5.7051±0.0063
mJ
5.383±0.027
mH
5.280±0.018
mKs
5.240±0.018
mW1
5.194±0.217
mW2
5.045±0.078
mW3
5.214±0.016
mW4
4.853±0.036
mGaia
5.9091400±0.0018783
mB
6.2350000±0.0714143
Source Swastik et al. 2021 TICv8 Gravity Collaboration et al. 2019 Gaia DR2 Zurlo et al. 2016 Marois et al. 2008 Gray et al. 2003 Cannon & Pickering 1918
Teff
(K)
7339+4-5
7204.5800+83.8357-129.5430
7400
7376.66+218.34-217.66
--- --- --- ---
L
(log10(L⦿))
---
0.7334676+0.0164458-0.0153483
---
0.74143533+0.00200321-0.00201253
---
0.692+0.035-0.038
--- ---
ρ
(g/cm3)
---
0.6815284+0.1743645-0.0969250
--- --- --- --- --- ---
M
(M⦿)
---
1.610000+0.320028-0.213299
--- ---
1.510+0.038-0.024
1.5±0.3 --- ---
R
(R⦿)
---
1.4933800+0.0493412-0.0509352
---
1.4376420+0.0887483-0.0814700
--- --- --- ---
log g
(log10(cm/s2))
4.19+0.01-0.02
4.2965600+0.0897777-0.0666633
4.0 --- --- --- --- ---
Metallicity
(dex)
-0.65+0.02-0.01
[Fe/H]
--- -0.5 [Fe/H] --- --- -0.47 [M/H] --- ---
v sin i
(km/s)
34.79+0.24-0.13
--- --- --- --- --- --- ---
Sp. T
--- --- A5 --- --- A5 V F0+ V ({lambda} Boo)... A5
Age
(Gyr)
--- --- 0.03 --- ---
0.0600+0.1000-0.0300
--- ---
Status
Confirmed Planet
Detected By
Astrometry, Imaging
Source Marois et al. 2008 Konopacky et al. 2016 Bonnefoy et al. 2016 Zurlo et al. 2016
i
(deg)
--- 38±7 --- 30.27±4.95
P
(days)
170000 171667.5 --- 166510.17±9021.68
a
(au)
68 70 --- 67.96±1.85
Teq
(K)
--- --- 1200 ---
Rp
(R)
13±1 --- 7 ---
Rp
(RJup)
1.2±0.1 --- 0.6 ---
Mp
(M)
2000 +1000-600
--- --- ---
Mp
(MJup)
7 +4-2
--- --- ---
Tp
(days)
--- --- --- 2453936±2350
Status
Confirmed Planet
Detected By
Astrometry, Imaging
Source Marois et al. 2008 Konopacky et al. 2016 Bonnefoy et al. 2016 Zurlo et al. 2016
e
--- <0.5 --- ---
i
(deg)
--- 37±12 --- 29.43±0.35
P
(days)
69000 67571.25 --- 83255.09±4510.84
a
(au)
38 38 --- 42.81±1.16
Teq
(K)
--- --- 1200 ---
Rp
(R)
13 +1-0
--- 11 ---
Rp
(RJup)
1.2 +0.1-0
--- 1.0 ---
Mp
(M)
3000±1000 --- --- ---
Mp
(MJup)
10±3 --- --- ---
Tp
(days)
--- --- --- 2396093±3590
Status
Confirmed Planet
Detected By
Astrometry, Imaging
Source Marois et al. 2008 Konopacky et al. 2016 Bonnefoy et al. 2016 Zurlo et al. 2016
e
--- <0.6 --- ---
i
(deg)
--- 45±8 --- 38.63±2.84
Teq
(K)
--- --- 1300 ---
Rp
(R)
13 +1-0
--- 10 ---
Rp
(RJup)
1.2 +0.1-0
--- 0.9 ---
Mp
(M)
3000±1000 --- --- ---
Mp
(MJup)
10±3 --- --- ---
P
(days)
37000 --- --- 41627.54±2257.24
a
(au)
24 --- --- 26.97±0.73
Tp
(days)
--- --- --- 2438859±566
Status
Confirmed Planet
Detected By
Astrometry, Imaging
Source Gravity Collaboration et al. 2019 Bonnefoy et al. 2016 Zurlo et al. 2016 Marois et al. 2010
Teq
(K)
1150±50 1300 --- ---
Mp
(M)
3178+2225-1271
--- --- ---
Mp
(MJup)
10+7-4
--- --- ---
e
0.15±0.08 --- --- ---
i
(deg)
25±8 --- 30.95±1.43 ---
Rp
(R)
13.1+1.5-1.2
10 --- ---
Rp
(RJup)
1.17+0.13-0.11
0.9 --- ---
a
(au)
16.4+2.1-1.1
--- 16.99±0.46 14.5±0.5
P
(days)
--- --- 20815.60±1128.62 18000.0
Tp
(days)
--- --- 2449940±340 ---
Literature Time Series (1 File Type, 1 File)
File Type Data Points Filter Reference
Photometric Light Curve     54 Hp (Hipparcos) Hipparcos and Tycho Catalogs
Known Objects
4 Confirmed Planets
1 2MASS Point Source Catalog
Data Files
1 SuperWASP Time Series
4 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
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