HR 8799
23 07 28.71507
+21 08 03.3053
39.40
HR 8799
V342 Peg
V342 Pegasi
HD 218396
HIP 114189
TYC 1718-2350-1
SAO 91022
BD+20 5278
2MASS J23072869+2108033
Gaia DR2 2832463659640297472
5.953
6.21
5.383
5.280
5.240
7193
1.516
0.033
1.44
-0.47
kA5hF0mA5 V
HR 8799 b
HD 218396 b
Gaia DR2 2832463659640297472 b
TYC 1718-2350-1 b
HIP 114189 b
Confirmed planets
5
0.7
166510
67.96
0
30.27
60.89
1100
L/T
0.5
HR 8799 is a young Lambda Boötis star in the constellation of Pegasus. It hosts a debris disk and at least 4 planets. The outer two planets have peculiar spectral energy distributions that match a blend of L and T-type spectra.
imaging
15/11/26
2008
HR 8799
This image shows three planets orbiting the star HR 8799. It was obtained with the Keck II telescope on Hawaii. Credit: C. Marois et al., NRC Canada.
HR 8799 c
HD 218396 c
Gaia DR2 2832463659640297472 c
TYC 1718-2350-1 c
HIP 114189 c
Confirmed planets
7
1.0
83255
42.81
0
29.43
65.68
1200
L/T
0.5
HR 8799 is a young Lambda Boötis star in the constellation of Pegasus. It hosts a debris disk and at least 4 planets. The outer two planets have peculiar spectral energy distributions that match a blend of L and T-type spectra.
imaging
15/11/26
2008
HR 8799
This image shows three planets orbiting the star HR 8799. It was obtained with the Keck II telescope on Hawaii. Credit: C. Marois et al., NRC Canada.
HR 8799 d
HD 218396 d
Gaia DR2 2832463659640297472 d
TYC 1718-2350-1 d
HIP 114189 d
Confirmed planets
7
1.1
41628
26.97
0
38.63
56.09
1200
L7
0.5
HR 8799 is a young Lambda Boötis star in the constellation of Pegasus. It hosts a debris disk and at least 4 planets. The inner two planets have spectral energy distributions that best match dusty L7 dwarfs.
imaging
15/11/26
2008
HR 8799
This image shows three planets orbiting the star HR 8799. It was obtained with the Keck II telescope on Hawaii. Credit: C. Marois et al., NRC Canada.
HR 8799 e
HD 218396 e
Gaia DR2 2832463659640297472 e
TYC 1718-2350-1 e
HIP 114189 e
Confirmed planets
7
1.0
20816
16.99
0
30.95
145.73
1200
L7
0.5
HR 8799 is a young Lambda Boötis star in the constellation of Pegasus. It hosts a debris disk and at least 4 planets. The inner two planets have spectral energy distributions that best match dusty L7 dwarfs.
imaging
15/11/26
2010
HR 8799
This image shows three planets orbiting the star HR 8799. It was obtained with the Keck II telescope on Hawaii. Credit: C. Marois et al., NRC Canada.
Pegasus