1998SD9
Last update: 2021-09-17 23:50 UTC
Orbital Properties
Epoch
59400.0
MJD
Orbit type
Aten
Perihelion (q)
0.348
au
Aphelion (Q)
1.057
au
Eccentricity (e)
0.504
-
Inclination (i)
3
deg
Orbit period (P)
215.2
days
Earth MOID
0.00921
au
Next Earth close approach
Date
2021-10-06
Nominal distance (from Earth center)
0.02716
au
4063507
km
Maximum Brightness
119.9
-
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Risk
Object is not in risk list
Object is not in priority list
Physical Properties
Absolute Magnitude (H)
23.9
-
Diameter
60*
*Estimated from the absolute magnitude using
m
Taxonomic type
-
Rotation period (T)
-
h
Discovery Information
Discovery Date
1998-09-18
Observatory
Lincoln Laboratory ETS, New Mexico
External links