CELESTIAL HEAVYWEIGHTS. The following items are a selection from a list compiled in the June 1997 issue of Astronomy. The largest known star is Mu Cephei (with a radius of 11 AU). The most massive star is Eta Carinae (100 solar masses). The largest known meteorite in the ground (an estimated 60 tons) lies in a farm in Namibia. The largest dug-up meteorite, the "Ahnighito" (34 tons), is on view in New York's American Museum of Natural History. The furthest galaxy (a distinction which changes frequently) is an unnamed object in Virgo with a redshift of 4.38. The most distant known object is the quasar PC 1247+3406, with a redshift of 4.897. The brightest recorded supernova occurred in the year 1006. As bright as a quarter moon, the object was visible in daylight and cast shadows at night.