HR 8799

HR 8799 is a young main sequence star with a debris disk and four giant extra-solar planets. It is one of the first systems in which the exoplanets were discovered (or confirmed) by direct imaging and the clearest view of so much of a planetary system. Characteristics:

• Pegasus - constellation.
• 23h07m28.7157s - right ascension.
• +21deg08m03.311s - declination.
• +5.964 - apparent magnitude.
• 133.3 ly - distance.
• A5 - spectral type.
• 1.43 - mass(solar).
• 4.92 - luminosity(solar).
• 1.34 - radius(solar).
• +0.234 - B-V color index.
• 30 million years - age.

(R_J and M_J are Jupiter's radius and mass and the temperatures are determined effective temperatures.)