Encyclopedia: 644...
Encyclopedia : 6 : 64 : 644 (4 articles)
6-4-4-6The Pennsylvania Railroad's lone S1 was the only 6-4-4-6 ever constructed. A 6-4-4-6 steam locomotive, in the Whyte notation for describing locomotive wheel arrangements, is one with six leading wheels in a leading truck, two sets of four driving wheels, and six trailing wheels in a trailing t..
644For other uses, see (disambiguation)}}}. ..
644 Cosima644 Cosima Name Name Cosima Designation 1907 AA Discovery Discoverer August Kopff Discovery date September 7, 1907 Discovery site Heidelberg Orbital elements Epoch August 18, 2005 (JDCT 2453600.5) Eccentricity (e) 0.156 Semimajor axis (a) 2.599 AU Perihelion (q) 2.19..
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