P l a n e t s   C a t a l o g u e

 

Orbital Data For The Planets
		SEMIMAJOR AXIS		SIDEREAL PERIOD
PLANET		AU	106 km	Tropical Years	Days	SYNODIC PERIOD (Days)	MEAN ORBITAL SPEED (km/s)	ORBITAL ECCENTRICITY	INCLINATION OF ORBIT TO ECLIPTIC
Mercury		0.3871	57.9	0.24085	87.97	115.88	47.9	0.206	7.004
Venus		0.7233	108.2	0.061521	224.70	583.96	35.0	0.007	3.394
Earth		1.0000	149.6	1.000039	365.26	-	29.8	0.017	0.0
Mars		1.5237	227.9	1.88089	686.98	779.87	24.1	0.093	1.850
Jupiter		5.2028	778	11.86		399	13.1	0.048	1.308
Saturn		9.588	1427	29.46		378	9.6	0.056	2.488
Uranus		19.191	2871	84.07		370	6.8	0.046	0.774
Neptune		30.061	4497	164.82		367	5.4	0.010	1.774
Pluto		39.529	5913	248.6		367	4.7	0.248	17.15
Adapted from The Astronomical Almanac (U.S. Naval Observatory), 1981.

Physical Data For The Planets
	DIAMETER
PLANET	km	Earth = 1	MASS (Earth = 1)	MEAN DENSITY (g/cm3	ROTATION PERIOD (days)	INCLINATION OF EQUATOR TO ORBIT	OBLATENESS	SURFACE GRAVITY (Earth = 1)	ALBEDO	VISUAL MAGNITUDE AT MAXIMUM LIGHT*	ESCAPE VELOCITY (km/s)
Mercury	4,878	0.38	0.055	5.43	58.6	0.0	0	0.38	0.106	-1.9	4.3
Venus	12,104	0.95	0.82	5.24	-243.0	177.4	0	0.91	0.65	-4.4	10.4
Earth	12,756	1.00	1.00	5.52	0.9973	23.4	1/298.2	1.00	0.37	-	11.2
Mars	6,794	0.53	0.107	3.9	1.026	25.2	1/164	0.38	0.15	-2.0	5.0
Jupiter	143,200	11.2	317.8	1.3	0.41	3.1	1/16	2.53	0.52	-2.7	60
Saturn	120,000	9.41	94.3	0.7	0.43	26.7	1/9.2	1.07	0.47	+0.7	36
Uranus	51,800	3.98	14.6	1.3	-0.65	97.9	1/30	0.92	0.50	+5.5	21
Neptune	49,500	3.81	17.2	1.5	0.77	29	1/40	1.18	0.5	+7.8	24
Pluto	3,100	0.27	0.0023	0.5	6.387	90	?	0.03	0.5	+15.1	1
*At mean opposition for superior planets. Adapted from The Astronomical Almanac (U.S. Naval Observatory), 1981.

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