99942 Apophis
Last update: 2021-10-20 23:50 UTC
Orbital Properties
Epoch
59400.0
MJD
Orbit type
Aten
Perihelion (q)
0.746
au
Aphelion (Q)
1.099
au
Eccentricity (e)
0.191
-
Inclination (i)
3.3
deg
Orbit period (P)
323.7
days
Earth MOID
0.00005
au
Next Earth close approach
Date
2029-04-13
Nominal distance (from Earth center)
0.00025
au
38013
km
Maximum Brightness
3.1
-
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Risk
Object is not in risk list
Object is not in priority list
Physical Properties
Absolute Magnitude (H)
18.9
-
Diameter
375
*Estimated from the absolute magnitude using
m
Taxonomic type
S/Sq
Rotation period (T)
30.5600
h
Discovery Information
Discovery Date
2004-06-19
Observatory
Kitt Peak
External links