The Horsehead Nebula is approximately 422 parsecs or 1375 light years from Earth. It is a G0IV type star of magnitude 8.03, 93.2 parsecs from Earth. It is equivalent to 4,550 million parsecs or 14.4 billion light years. The luminosity of at 606 parsecs is the highest ever derived for this star. Beam lengths may extend between several thousand, hundreds of thousands or millions of parsecs. The entire complex is thought to be around 140 parsecs distant. For example, M is the magnitude at 10 parsecs in the V passband. Kepler-10 is a G-type star located 187 parsecs (608 light years) from Earth. This region is relatively small, approximately 10 parsecs in size. Such jets can exceed millions of parsecs in length. Neotrantor was about three parsecs from Trantor. We take and to be zero and is estimated to be 17 parsecs.