From the reference cited, "This provided sensitivity to faint planetary-mass companions within 1 arcsec (∼30 au) of the star. We detected the companion AF Lep b at a separation of 339 mas (9 au), within the inner edge of its unresolved debris disk."
Very nice. My observation, the exoplanet.eu site documents AF Lep b and properties.
http://exoplanet.eu/catalog/af_lep_b/, shows P = 8935 days. M = 5.1 Mjup, R=1.33 Rjup, mean density = 2.689 g cm^-3. The host star is 1.2 Msun, applying MMSN postulated protoplanetary disc mass initially could be 3995 earth masses, total dust and gas. The exoplanet at 5.1 Mjup is about 1621 earth masses. It orbits near 8.4 to 9 au from the host star with slightly shorter period than Saturn in our solar system, 8935 day period for AF Lep b, 24.46 years. The eccentricity is large too, e=0.47. The closest approach to its host star about 4.452 au and swinging out to about 12.348 au from parent star. Jupiter semi-major axis 5.203 au, Saturn 9.537 au. In our solar system, no such large exoplanets formed like AF Lep b. The exoplanet.eu site shows 217 imaged exoplanets now.
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