Page:Gods Glory in the Heavens.djvu/383

JUPITER'S SATELLITES.

No.	Sidereal Revolution.				Distance. Jupiter's radius = 1.	Orbit inclined to Jupiter's equator.			Diameter in miles.	Mass. Jupiter =1	Apparent Diameter from Jupiter.
	d.	h.	m.	s.		°	′	″			′	″
1	1	18	27	23	6.048	0	0	7	2436	.000017	31	11
2	3	13	13	42	9.623	0	1	6	2187	.000023	17	35
3	7	3	42	33	15.350	0	5	3	3573	.000088	18	0
4	16	16	32	11	26.998	0	0	24	3057	.000043	8	46

[1] (Mean longitude of the 1st + twice mean longitude of 3d) 3 times mean longitude of 2d is always = ,

180°

1. In consequence of this remarkable relation, the 1st, 2d, and 3d satellites can never be eclipsed all at once.

 

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SATURN.

Volume (Earth's = 1),	772
Mass (Earth's = 1), .	101.364
Density (Earth's = 1),	.131
Diameter (Earth's = 1),	9.022
Diameter— — — in miles,	75.070
Diameter— — — apparent, mean,	17″.1
Diameter apparent— — — minimum.	15″.0
Diameter apparent— — — maximum.	20″.0
Gravity (Earth's = 1),	1.09
Gravity— — — bodies fall in one second, in feet,	17.6
Light and heat from Sun, perihelion (Earth's = 1)	.0123
Light and heat from Sun— — — aphelion,	.0099
Light and heat from Sun— — — mean,	.0111
Polar less than equatorial diameter.	1-10th
Distance from the Sun, mean, in miles,	906,205,000
Distance from the Sun— — —, (Earth's = 1),	9,538,850
Distance from the Sun, in miles, — — — maximum,	10,073,270
Distance from the Sun, in miles, — — — minimum,	9,004,422
Eccentricity of orbit (semi-axis major = 1),	.0560265