Wikipedia:Sandbox

Malcolm's Planet
	Famous "Blue Marble" photograph of Earth, taken from Apollo 17.
Designations
Adjectives	Terrestrial, Terran, Telluric, Tellurian, Earthly
Orbital characteristics
	Epoch J2000
Aphelion	152,097,701 km ; 1.0167103335 AU
Perihelion	147,098,074 km ; 0.9832898912 AU
Semi-major axis	149,597,887.5 km ; 1.0000001124 AU
Eccentricity	0.016710219
Orbital period (sidereal)	365.256366 days; 1.0000175 yr
Average orbital speed	29.783 km/s ; 107,218 km/h
Inclination	Reference (0) ; 7.25° to Sun's equator
Longitude of ascending node	348.73936°
Argument of perihelion	114.20783°
Known satellites	1 (the Moon)
Physical characteristics
Mean radius	6,371.0 km
Equatorial radius	6,378.1 km
Polar radius	6,356.8 km
Flattening	0.0033528
Circumference	40,075.02 km (equatorial); 40,007.86 km (meridional); 40,041.47 km (mean)
Surface area	510,072,000 km² 148,940,000 km² land (29.2 %); 361,132,000 km² water (70.8 %)
Volume	1.0832073×1012 km³
Mass	5.9736×1024 kg
Mean density	5.5153 g/cm³
Surface gravity	9.780327 m/s²; 0.99732 g
Escape velocity	11.186 km/s ; 40,270 km/h;
Sidereal rotation period	0.997258 d; 23h 56m 04.09054s
Equatorial rotation velocity	465.11 m/s
Axial tilt	23.439281°
Albedo	0.367
Atmosphere
Surface pressure	101.3 kPa (MSL)
Composition by volume	78.08% Nitrogen (N2); 20.95% Oxygen (O2); 0.93% Argon; 0.038% Carbon dioxide; About 1% water vapor (varies with climate)

Welcome to this sandbox page, a space to experiment with editing.

You can either edit the source code ("Edit source" tab above) or use VisualEditor ("Edit" tab above). Click the "Publish changes" button when finished. You can click "Show preview" to see a preview of your edits, or "Show changes" to see what you have changed.

Anyone can edit this page and it is automatically cleared regularly (anything you write will not remain indefinitely). Click here to reset the sandbox.

You can access your personal sandbox by clicking here, or using the "Sandbox" link in the top right.Creating an account gives you access to a personal sandbox, among other benefits.

Do NOT, under any circumstances, place promotional, copyrighted, offensive, or libelous content in sandbox pages. Doing so WILL get you blocked from editing.

For more info about sandboxes, see Wikipedia:About the sandbox and Help:My sandbox. New to Wikipedia? See the contributing to Wikipedia page or our tutorial. Questions? Try the Teahouse!

Shortcuts

^ This is the radius that gives a sphere with the same volume as the WGS 84 reference ellipsoid.
^ ^a ^b ^c The WGS 84 reference ellipsoid.
^ Pidwirny, Michael (2006-02-02). "Surface area of our planet covered by oceans and continents.(Table 8o-1)". University of British Columbia, Okanagan. Retrieved 2007-11-26. {{cite journal}}: Cite journal requires |journal= (help)
^ ^a ^b Yoder, C. F. (1995) p. 12.
^ Cite error: The named reference earth_fact_sheet was invoked but never defined (see the help page).

[wgs84sphere-1] This is the radius that gives a sphere with the same volume as the WGS 84 reference ellipsoid.

[wgs84-2] The WGS 84 reference ellipsoid.

[3] Pidwirny, Michael (2006-02-02). "Surface area of our planet covered by oceans and continents.(Table 8o-1)". University of British Columbia, Okanagan. Retrieved 2007-11-26. {{cite journal}}: Cite journal requires |journal= (help)

[yoder12-4] Yoder, C. F. (1995) p. 12.

[earth_fact_sheet-5] Cite error: The named reference earth_fact_sheet was invoked but never defined (see the help page).

[1]

[2]

[3]

[4]

[5]