Page:Philosophical Transactions - Volume 004.djvu/223



s. d. m. sec.

The Moon from the Horoscope in the Ecliptick 47 34

In a great Circle 47 36

Her Azimuth from the Horoscope 45 53

The Altitude of her Center 14 23

Her Parallactical Angle 78 17

Her Parallax in

Altitude 51 21

Longitude 10 25

Latitude 50 17

Hence her visible place ♍︎ 29 54 48

With visible North-Latitude 1 8 59

Therefore she is in Antecedence of the Star 1 8 25

With less North-Latitude 16 1

Now the Moons Semi-diameter being only 14 m. 17 sec. it appears, that the Star is more to the North, than the Moons Limb, by 1 m. 44 sec. and the Moons Latitude decreasing together with the Altitude of the 93d degree, causeth the Apparent Motion to be visible in a line bending down from the Star; so that near the visible Conjunction the Star may stand about 3 min. to the North from the Moons Limb. Though this be not like to prove an Occultation, yet let me desire those, who have fit Glasses and Instruments, to observe this Transit, and how far the Star may stand from the Limb of the Moon at the time of the visible Conjunction, that we may be the better enabled to define, both how the Motion of the Moon's Latitudes, which shall need its limations, is to be reform'd, and whether that Æquation of the Nodes, allow'd by the Caroline Author and some other Moderns, be firm and valid.

V. The last Occultation happens on May 23; when 12 h. 17 m. P. M. by the Ephemerides the Moon will be in Conjunction with Antares. To define the Beginning and End of it, I have snpputed [sic] the Moon's true and visible places to 12 h. 28 min. 42 sec. and 13 h. 43 m. 40 sec. P. M. at Derby, by the Caroline Tables, and I find,