Tags: Planet.

21047 Hodierna (1990 SE5) is an outer main-belt asteroid discovered on September 22 1990 by E. W. Elst at the European Southern Observatory.

apoapsis (km)
7.01819e+11
orbital period (μ)
2.51058e+08
periapsis (km)
4.90511e+11
absolute magnitude
12.9
discovery date
1990-09-22
discoverer
Eric Walter Elst
epoch
May 14 2008
former name
1990 SE5

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