Transit of Mercury on 2019 Nov. 11 Delta T: 69.3s 75-40 Location: W 75°00'00.0", N 40°00'00.0", 10m (Longitude referred to Greenwich meridian) Sun's Position Angular EST Altitude Azimuth Angle Separation d h m s ° ° ° ' Transit Begins 11 07:36:03.9 8.7 121.6 109.9 16.2 Ingress Interior Contact 11 07:37:45.2 9.0 121.9 109.9 16.1 Least Angular Distance 11 10:20:13.5 29.3 157.0 1.2 Egress Interior Contact 11 13:02:40.0 29.7 201.7 298.5 16.1 Transit Ends 11 13:04:21.1 29.5 202.1 298.5 16.2 Duration: 5h 28m 17.2s Solar Semidiameter: 16' 09.4" Semidiameter of Mercury: 0' 05.0" Inferior Conjunction: 10h 22m (not the same time as mid-transit) Generated with the U.S. Naval Observatory's MICA 2.2.2 software. ____________ At the start of the Transit, the sun will be in Libra, the center about 3½° east of Zubenelgenubi; by the end of the Transit, the sun will have moved to about 3¾° east of Zubenelgenubi. With Inferior Conjunction at 10:22 am EST, Mercury will transition from Eastern Elongation (in the evening sky) to Western Elongation (in the morning sky). Perhaps it's a rhetorical question — but will sighting Mercury's silhoutte at each stage of the Transit qualify as having seen Mercury at each elongation? ____________ Here's a table of the Delta T values for 2019 from the U.S.Naval Observatory, obtained 11-October-2019: 2019 1 1 69.2202 2019 2 1 69.2452 2019 3 1 69.2733 2019 4 1 69.3032 2019 5 1 69.3326 2019 6 1 69.3540 2019 7 1 69.3582 2019 8 1 69.3442 2019 9 1 69.3376