Calculadora de Distancia Comóvil Gratis
Calcula la distancia comóvil a objetos lejanos factorizando la expansión del universo.
Comoving Distance
428.2857 Mpc
Comoving Distance vs Redshift (z)
Fórmula
## Comoving Distance Approximation At low redshifts the comoving distance is well approximated by the linear Hubble relation. ### Formula **d = c z / H0** - *c* = 299 800 km/s (speed of light) - *z* = observed redshift - *H0* = Hubble constant The result is in Mpc. For z above about 0.3, higher-order corrections become important.
Ejemplo Resuelto
A galaxy at redshift z = 0.1 with H0 = 70 km/s/Mpc.
- 01d = c z / H0
- 02d = 299800 * 0.1 / 70
- 03d = 29980 / 70
- 04d ≈ 428.3 Mpc ≈ 1396 Mly
Preguntas Frecuentes
What is comoving distance?
It is the distance between two objects measured in a reference frame that expands with the universe. It remains constant as the universe grows.
When does this linear approximation break down?
For redshifts above about 0.3, the non-linear effects of the expansion history (matter and dark energy content) become significant.
How does comoving distance differ from luminosity distance?
Luminosity distance accounts for the dimming of light due to expansion: d_L = d_comoving * (1 + z). It is always larger than the comoving distance.