( 4+6 ).

'tA Comet. Au.1680 . at Danc-zick, by M.Hevelius. Ph.Coi. n. 3 . f. 65 .

xA Comet. An.1682. at pant-zick j by M.Hevelius.

'• T1'. f- 1 6 .

h. ' rr

2 44 002 47 is2 ss ;

2 59 :o

z 12 2

3 II 22

; 2 7 543 36 20

It’s He <*4 and the Foot of Androm. Alamech 1 -

That Distance repeated -- - — -- — -

Its Head from Capella -—

' ■- —— ■ ■ > ■ ■■ — ■ repeated

Its Head from Algol in Medusa's - — --

-from Mirach — . .. .

-from Alatnecb again —-—■ ■ ■ -

- -from Capella again -- - 1 -

o r a11 26 o11 26 sO1 is31 1 24

18 16 54'9 Zs 0ii 33 30?o so AC

At 4 h 2i'f p.m. the height of the Comes was about- 5 0 *, therefore theDistance of the Head of the Comet from Algol corrected by refraction, 8° 19t.

from Mirach . 19 37

And admitting with Hevelius the Place of Mirach now in T. 21 0 40*34". with North Latitude 25° s/. its Distance from Algol will be 23° 42'40T and the Place of the Head of the Comet in ^. 14 0 48^, with NorthLatitude 17 0 8*.

At 3 h 28'. I State the correct Distance of the Comet’t Head from Capella3i°oo r ;from Alamech 11 0 40'; and therefore its true Plac« in L. 14 0 50^,with North Latitude 17 ° 6 f : agreeing very well with the Place derivedfrom the former Distances from two other and different Stars.

The Tail was not, it feems, directly Opposite to the Sun : for the SansPlace was now L. 13 0 ; but the Comet being in 14 0 47L of the fame Sign y

that is i° 40', in the Conscquence of the Su», the T dii ought, if it hadbeen exactly opposite to the Sun, to have lain in Consequence of the Head 3but the Kjtce pt Cajfiopeia is now in ^. 13^ 24/. in Antecedence of theComet, whose Tail lay not therefore. in Consequence, but in Antecedence ofthe Line pasiing through its Head and the Sun, at about an Angle of io°,

Next Night, being that foliowing the 23 of April, about % of an Houraster two, its Tail appeared much {horter than last Morning : At 2 h yj». itsHead was from Mirach 2i° 9*. Hence and trom a Course of Gbservation ofit sent me by an ingenious Frierrd, 1 found its Motion was Direct, and itsLatitude Decreasing.

CVI. Nuperum Cometam Observavi primum m. ante Solis Ortum, a Die 2.ad 4 Dec. An. 1680. deinde vesp. a 24 Drcemh. ad tAE^uinoctium Vernum. Ma-ne versabatur in —, & ist. subLatit. Australi. Vesperi vero in +V, K> T, &^. sub Latit. Bor.

CVII. Plurimas distantias ä Fixis, tum Altitudines Nuperi Cometa Meridia-nas, Impetravi quas autem omnes hic recense,e nimis longum foret, nec vacateas rigidi ori Calculo subjicere. Sufficiat hac vice dixisse Cometam hunc hic Ge-dani Die 2J Aug. st. n. 1681. primum detectum, atque a Die 26 Aug. ad 17.

Septemb.