# from Harkness, 1891PASP....3...46 8.842 0.0188 # from Harkness, 1888AJ......8..108H (based on American photographs alone) 8.847 0.012 # from 1883MNRAS..43..211 # attributes: British use method contacts # Americans photographic # Germans direct heliometer measurements # French contacts + photographic # # from 1888MNRAS..48..201 # British value, based on ingress phase 2 8.874 0.081 # British value, based on ingress phase 3 8.823 0.023 # British value, based on egress 8.855 0.036 # British mean value 8.832 0.024 # from 1895MNRAS..55R.243 # This is based on German heliometer measurements of 1882 AND 1874 8.896 0.0216 # Quoted by Harkness, "Washington Observations", 1885, # Appendix III, as coming from Cruls (1887) 8.808