Rotation of Earth...
Born in 476 CE in Kusumpur (Bihar), Aryabhatt's intellectual brilliance remapped the boundaries of mathematics and astronomy...
In 499 CE, at the age of 23, he wrote a text on astronomy and an unparallel treatise on mathematics called "Aryabhatiyam." He formulated the process of calculating the motion of planets and the time of eclipses.
Aryabhatt was the first to proclaim that the earth is round, it rotates on its axis, orbits the sun and is suspended in space - 1000 years before Copernicus published his heliocentric theory.
The period of one sidereal rotation of the earth according to Aryabhata is 23 hours, 56 minutes 4.1 seconds. The corresponding modern value is 23 hours, 56 minutes 4.091 seconds.
Arryabhatta also has given the value of earth diameter is which is the sharpest amongst all modern scientists..
Source :Aryabhatiyam, Golapadah, Chapter 4,Arrabhatta
Distance of Planets from Sun
Distance of earth from the sun is 1.5 × 108 km that is called Astronomical Unit (AU)
Planet Aryabhatta Modern science
Mercury 0.37 AU 0.387 AU
Venus 0.725 AU 0.723 AU
Mars 1.438 AU 1.432 AU
Jupiter 4.16 AU 4.20 AU
Saturn 9.41 AU 9.54 AU