Cosmographic Values Index by James Q. Jacobs

A set of cosmographic values with code based on International Astronomic Union constants for Jan. 1. 2000. For data based on the Geodetic Reference System 1980 see the Geodesy Page, Figure of the Earth section.

These constants are also avalable in a spreadsheet, aegeo.xls

CONSTANT	NUMERIC VALUE	CODE*
Earth, Radius, Equatorial IAU 1979	3963.19245606 mi. 6,378,140 m	ER
Earth, Circumference, Equatorial	24,901.4726094 mi. 40,075,035.5351 m	CE
Earth, Circumference, Mean	24,873.492365 mi. 40,030,005.6967 m	CRM
Earth, Arc Degree, Mean	69.0933962964 mi. 111,1950.42769 m	AM
Earth, Radius, Mean	3958.73926185 mi. 6,370,973.27862 m	RA
Earth, Radius, Polar	3949.90462476 mi. 6,356,755.28816 m	RP
Flattening, axis ratio	0.996647186822	FL
Flattening inverse	298.257	FI
Flattening of the Earth	0.0033528131779	FE
Inclination, Lunar Orbit, Mean	5.1453964°	IL
Wobble, Lunar Orbit Inclination	± 0.0025°	WL
Lunar Major ( OB + IL )	28.584687511°	OL
Lunar Minor ( OB - IL )	18.293894711°	OM
Moon, Distance, Mean	384,399,070 m	MD
Lunar Orbit Eccentricity	0.054900489	LE
Moon, Radius, Mean	1,738,000 m	MR
Obliquity of the Ecliptic	23.439291111°	OB
Solar distance	149,597,870,000 m	AU
Geographical Mile	1,855.32571922 m	MG
MODULES	in degrees	CODE
Lunar Motion per Mean Rotation	13.1403824445°	R27
Mean Daily Lunar Motion	13.1763582244°	C27
Solar Orbit per Day	0.985609119791°	SO
Solar Orbit per Sidereal Rotation	0.982918083604°	SI
Solar Orbit per Nodal Month	26.8206129544°	S22
Solar Orbit per Sidereal Month	26.9284788014°	S27
Solar Orbit per Synodic Month	29.1056177173°	S29
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* The code was originally written for compatibility with an HP48 SX.
To upload the code to your HP see the:
COSMOGRAPHY DATA PROGRAMMING FILE

FOR MORE ASTRONOMIC AND GEODETIC DATA CHECK OUT THE:

Astronomical Constants Index - - Astronomy Formulas Pages - - Geodesy Page
Did ancient astronomers survey the Earth? - - Read the Archaeogeodesy Pages