Steampunk Planets

Classic: Steampunk has general descriptions of how scientists saw the planets in the 19th century. The information has been turned into more manageable tables with terms from GURPS Space added. UranusUranus has various other alternative names until 1850 - The Georgian Sidis, Herschel, and even Neptune. and Neptune are regarded as too far out to worry about visiting and so no details are provided in Classic: Steampunk. 
==Vulcan (hypothetical planet)==
Orbital Radius (AU)	Year Length (days)	Day Length 	Diameter 	Density	Gs 	Atm 	Albedo	Mean Temp 	Terrain	Type
0.17 	26 days 	26 days (tide-locked	1,100 miles	6.5 	0.16	Trace (replenished from solar outgassing)	0.06 	1220 F dayside950 F twilight-459 F nightside	mountainous/
volcanic	Tiny (Rock)
*Vulcan | The Planet That Didn't Exist
==Mercury==
Orbital Radius (AU)	Year Length	Day Length 	Diameter 	Density	Gs 	Atm 	Albedo	Mean Temp	Terrain	Type
0.29 	88 days 	88 days tide-locked	3,000 miles	7.2 	0.50	Trace (replenished from solar outgassing)	0.06 	640 F dayside
465 F twilight
-459 F nightside	mountainous/
volcanic	hot rockball
Tiny (Rock)
==Venus==
Thanks to the clouds speculation regarding this world went riot.
Orbital Radius (AU)	Year Length	Day Length 	Diameter	Density	Gs 	Atm 	Albedo	Mean Temp	Terrain	Type
0.72 	225 days 	1 day or 150 days (estimate)	7,700 	5.0 	0.88	very dense, oxygen/nitrogen	0.76 	116 F 	marsh/
nitrogen	Standard (greenhouse)
==Mars==
Mars: believed to be covered in canals.In 1907 Alfred Russell Wallace wrote "Is Mars Habitable?" which showed that air pressure and temperature of Mars made liquid water on Mars impossible. Wallace's conclusion would be summed up as the blunt "only a race of madmen would build canals under such conditions"
Orbital Radius (AU)	Year Length	Day Length	Diameter 	Density	Gs 	Atm	Albedo	Mean Temp	Terrain	Type
1.52 	687 	24 h 37 m 	4,200 miles	4.2 	0.41	very thin, oxygen/
nitrogen	0.15 	35 F 	barren 	Cold Desert
Small (Rock)
==Vesta, Juno, Ceres, and Pallas==
Classic: Steampunk doesn't mention the fact that these asteroids were considered planets from 1807 to as late as the 1870s.Why is Pluto not a planet?Robinson, Horatio Nelson (1871) A Treatise on Astronomy pg 145Royal Greenwich Observatory (1872) Observations Made in Astronomy, Magnetism and Meteorolgy pg XCIX
==Jupiter==
Orbital Radius (AU)	Year Length 	Day Length	Diameter 	Density	Gs 	Atm	Albedo	Mean Temp	Terrain	Type
5.20 	11.86 	9 h 40 m 	86.500 miles	1.4 	2.76	superdense, methane/
ammonia	0.51 	 	 	
unknown 	Medium Gas Giant	 	 	 	 	 	 	 	 	
==Saturn==
Orbital Radius (AU)	Year Length 	Day Length	Diameter 	Density	Gs 	Atm	Albedo	Mean Temp	Terrain	Type
9.54 	29.46 years 	10 h 14 m 	73,000 miles	0.75 	1.26	superdense, methane/
ammonia	0.61 	 	 	
unknown 	Small Gas Giant	 	 	 	 	 	 	 	 	
==Additional Information==
*Bygone Visions of Cosmic Neighbors
==Notes==
Category:Setting Concepts
==References==
Category:Other Planets
Category:Steampunk Genre