Planet	Atmospheric Composition	Surface Pressure (Pa)	Temperature (K)	Methane (% by volume)	Oxygen (% by volume)	Nitrogen (% by volume)	Carbon Dioxide (% by volume)	Hydrogen (% by volume)	Notes
Mercury	Trace gases	1.000000e-05	440	0	0	0	0	0	Very thin atmosphere.
Venus	CO2 96.5%, N2 3.5%	9.200000e+06	737	0	0	3.5	96.5	0	Extremely dense atmosphere.
Earth	N2 78%, O2 21%, Ar 0.93%	1.013250e+05	288	0.0002	21	78	0.040	0.0005	Life-supporting atmosphere.
Mars	CO2 95.3%, N2 2.7%	6.100000e+02	210	0.0007	0.13	2.7	95.3	0.003	Thin atmosphere, cold temperatures.
Jupiter	H2 89.8%, He 10.2%	1.000000e+05	165	0	0	0.5	0.03	0.01	Largest planet, thick atmosphere.
Saturn	H2 96.3%, He 3.25%	1.013250e+05	134	0	0	0.5	0.03	0.01	Similar to Jupiter, but colder.
Uranus	H2 83%, He 15%, CH4 2%	3.700000e+04	76	2	0	15	0.1	0.1	Cold, ice giant atmosphere.
Neptune	H2 80%, He 19%, CH4 1%	3.000000e+04	72	1.5	0	19	0.1	0.1	Cold, stormy atmosphere.
Pluto	N2 98%, CH4 2%	2.000000e+04	44	0	0	0	0.01	0.01	Very thin, varies with distance from Sun.
Moon (Luna)	Trace gases	0.000000e+00	-233	0	0	0	0	0	Almost no atmosphere.
Europa	O2 0.1%	1.000000e-04	50	0	0	0	0	0	Thin atmosphere primarily composed of oxygen.
Ganymede	O2 0.1%, H2	1.000000e-04	110	0	0	0	0	0	Thin atmosphere; largest moon.
Callisto	CO2 0.01%, O2	1.000000e-04	150	0	0	0.01	0.01	Very thin atmosphere.	NaN
Titan	N2 95%, CH4 5%	1.470000e+05	94	5	0	0.1	0.01	Thick atmosphere, methane lakes.	NaN
Enceladus	Water vapor, CO2	1.000000e-05	180	0	0	0	0	0	Plumes above the surface.
Mercury's exosphere	O, Na, H, He	1.000000e-05	440	0	0	0	0	0	Very weak exosphere.
Soho (Sovereign Moon)	Traces of gases	1.000000e-05	x	x	x	x	x	x	x
Sedna	N2 0.002%	1.000000e-03	50	0	0	0	0	0	Outer Solar System object with a thin atmosphere.
Haumea	H2, He, some N2	1.000000e-04	30	0	0	0	0	0	Distant dwarf planet with a tenuous atmosphere.
Makemake	N2 0.01%	1.000000e-04	50	0	0	0	0	0	Tenuous atmosphere, similar to Pluto.
Eris	N2 0.5%	1.000000e-04	40	0	0	0	0	0	Distant dwarf planet with weak atmosphere.
Vesta	Trace gases	1.000000e-04	230	0	0	0	0	0	Asteroid with very weak atmosphere.
Series	Trace gases	1.000000e-05	250	0	0	0	0	0	Largest asteroid with thin atmosphere.
Deimos	Trace gases	1.000000e-05	180	0	0	0	0	0	Very thin atmosphere.
Phobos	Trace gases	1.000000e-05	250	0	0	0	0	0	Extremely thin atmosphere.
Haumea's satellite	Some N2	1.000000e-04	x	x	x	x	x	x	x
Mercury's moon	Trace gases	1.000000e-05	x	x	x	x	x	x	x
2874 Epitome	Trace gases	1.000000e-05	x	x	x	x	x	x	x
433 Eros	Trace gases	1.000000e-05	x	x	x	x	x	x	x
216 Kleopatra	Trace gases	1.000000e-05	x	x	x	x	x	x	x
243 Ida	Trace gases	1.000000e-05	x	x	x	x	x	x	x
15 Eunomia	Trace gases	1.000000e-05	x	x	x	x	x	x	x
1895 Allena	Trace gases	1.000000e-05	x	x	x	x	x	x	x
55191 Ganymede	Trace gases	1.000000e-05	x	x	x	x	x	x	x
9073 Ainstan	Trace gases	1.000000e-05	x	x	x	x	x	x	x
10706 Tewin	Trace gases	1.000000e-05	x	x	x	x	x	x	x
23369 Germain	Trace gases	1.000000e-05	x	x	x	x	x	x	x
26421 Angaro	Trace gases	1.000000e-05	x	x	x	x	x	x	x
24309 Kati	Trace gases	1.000000e-05	x	x	x	x	x	x	x
5437 Jappie	Trace gases	1.000000e-05	x	x	x	x	x	x	x
54708 Tanaka	Trace gases	1.000000e-05	x	x	x	x	x	x	x
18220 Duval	Trace gases	1.000000e-05	x	x	x	x	x	x	x
13236 Galique	Trace gases	1.000000e-05	x	x	x	x	x	x	x
10994 Omenes	Trace gases	1.000000e-05	x	x	x	x	x	x	x
82963 Kirilli	Trace gases	1.000000e-05	x	x	x	x	x	x	x
71926 Kanon	Trace gases	1.000000e-05	x	x	x	x	x	x	x
28843 Alva	Trace gases	1.000000e-05	x	x	x	x	x	x	x
19870 Jokim	Trace gases	1.000000e-05	x	x	x	x	x	x	x
6533 Yasuda	Trace gases	1.000000e-05	x	x	x	x	x	x	x
338 AZaz	Trace gases	1.000000e-05	x	x	x	x	x	x	x
8771 Tuya	Trace gases	1.000000e-05	x	x	x	x	x	x	x
29525 Hetrag	Trace gases	1.000000e-05	x	x	x	x	x	x	x
31045 Sigiri	Trace gases	1.000000e-05	x	x	x	x	x	x	x
10699 Vanjura	Trace gases	1.000000e-05	x	x	x	x	x	x	x
22006 Greska	Trace gases	1.000000e-05	x	x	x	x	x	x	x
22006 Belayze	Trace gases	1.000000e-05	x	x	x	x	x	x	x
12962 Niiokimo	Trace gases	1.000000e-05	x	x	x	x	x	x	x
18962 Adock	Trace gases	1.000000e-05	x	x	x	x	x	x	x
38060 Yungja	Trace gases	1.000000e-05	x	x	x	x	x	x	x
17101 Gadyatin	Trace gases	1.000000e-05	x	x	x	x	x	x	x
38362 Lomyny	Trace gases	1.000000e-05	x	x	x	x	x	x	x
17528 Muroky	Trace gases	1.000000e-05	x	x	x	x	x	x	x
17949 Gantok	Trace gases	1.000000e-05	x	x	x	x	x	x	x
37600 Hargeneral	Trace gases	1.000000e-05	x	x	x	x	x	x	x
22099 Aurasia	Trace gases	1.000000e-05	x	x	x	x	x	x	x
44745 Baronte	Trace gases	1.000000e-05	x	x	x	x	x	x	x
216092 Ochan	Trace gases	1.000000e-05	x	x	x	x	x	x	x
47435 Traviss	Trace gases	1.000000e-05	x	x	x	x	x	x	x
17179 Flosser	Trace gases	1.000000e-05	x	x	x	x	x	x	x