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observation - Coggle Diagram
observation
measure properties of astronomical objects
composition
atomic & molecular,extinction&reddening
structure
magnetic field
components
dark matter,central blackhole
evolution
bulk properties
size/morphology
angular size&distance,unresolved stars,unresolved planets,unresolved orbits
luminosity
flux&distance
mass
gravity & rotation,M=a^3/p^2,virial theorem
temperature
effective temperature,excitation&ionization
position & motion
astrometry,proper,otion&RV,redshift,line width
age
population,population synthesis,single stars
environment
multiple stars and clusters,galaxy clusters,ISM&IGM
distance
luminosity and standard candles
redshift and Hubble constant
parallax
qualify measurements
accuracy and precision: systematic and random errors
Poisson process
SNR