( 375 )
An. 1657. MaU tty.fi. n. M. Uugem obscrved the Satellite very neär to Sa-turn on the Western side, and very little above the Line of the Anst. Isoppose this about 1c 1 * p. m. Let us now Calculate to that tirae.
Mot. Med. Sätet.
5 .
O
t
1 657 Mail 9 d
9 !l 10'
Londini
1641
8
19
U
Saturni Locus
m
N
OO
O
5 /
1 6
5
19
54
1? a la ^ T.
5*
0
3 i
Malt
6
9
H
/Equinoü. Sub.
ro
ii
00
9*
6
*3
11
9 11 4c r
0
9
5
b ab /EquinoB.
6
8
Ascen. ReBa
6
7
50
Long. Med. Satel.
4
10
41
Apocron.
10
ti
00
Apogaon ..
4
19
52
lieclin. Aust.
3
*3
Anomalia Med.
5
18
41-
SEquatio Sub.
0
0
Zr
Long. Vera Satel.
4
10
11
Apog.con
4
19
so
Residuum
11
10
ii
h. c. ante Apogäum.
0
19
39
Ergo l,o Semid. Annuli ad occasum ,0 ad Bore am ; Agreeing cxactlywith the Deseription and Figure of M. Hugetu.
1 hcre call the Plane of this Satellit's Orb, which hitherto I fuppole thelame with that of the Ring, Saturns Equinoftial, not that any discovery bathbeen able to prove that the Axls of that Globe is at right Angler thereto, hütbecause it bath pleased M. Hugens to call it so, and likewise becaule it is sonearly Parallel to our Globe' s EqulnoBlal ; Neverthelefs to soeak my Opinion,
I believe that the Axls is Inclined, and that not a little, to the Plane of theRing ; for as the Reftection of the Suns Light from the Ring is a great con-venience to that Hcmisphere oi Saturn, which beholds its Illuminate fxle;so that the other Hemifphere is very much Incommoded by the Shaddow of"the Ring, which for niany Months,and in some Parallels for several Years, oc-cafions a continual Night by rhe lnterception of the Sun s beams, which is aconsequence that Demonstratives follows the Position of-- the Ring in thePlane of Saturns Equator. Now this great inconvenience would be in somemeasore relicved by the Oblique Position of the Axls, for then the Parallelsof Latitude interfccting the Plane of the Ring, many and in most cases allof thera, might sor some time in every Diurnal Revolution of the Globe, freethemfclves from- this Eclipfe , which otherwise were- sufficient to renderthis Gbbe of Saturn unfit for any setled Habitation j but this is but Con-jecture^
The