Table 2 Mission design results of the two types of the kinetic impactor.

From: Enhanced Kinetic Impactor for Deflecting Large Potentially Hazardous Asteroids via Maneuvering Space Rocks

Type

Classic Kinetic Impactor

Enhanced Kinetic Impactor

Launch Vehicle

CZ-5

CZ-5

C3

23.72 km2/s2

0 km2/s2

Mass of impactor

3.56 tons

205.02 tons

Launch date

May. 2, 2020

Oct. 7, 2021

Transfer time

670.73 days

1447 days

Impact date

Mar. 4, 2022

Sep. 23, 2025

∆v of Apophis

0.38 mm/s

39.81 mm/s

∆ Perigee of Apophis in 2029

+176.22 km

+1,866.93 km

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