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