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Astronomy toolkit

Infer stellar and cosmological properties from measured light.

Radiant intensity

L / Wd / m

1.344e+3 W m⁻²

Stellar temperature and luminosity

λmax / mR / m

T = 5800 K

L = 3.906e+26 W

Spectral redshift

λobs / nmλrest / nm

z = 0.03000

Hubble recession

H₀ / km s⁻¹ Mpc⁻¹d / Mpc

8400 km s⁻¹