(21557) Daniellitt Main-belt Asteroid
Discovered on 24 August 1998 by LINEAR at Socorro.
Daniel Abraham Litt (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for his mathematics project. He attends the Orange High School, Pepper Pike, Ohio, U.S.A.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Daniellitt is today
Seen from above the solar system on 2026-10-14: Daniellitt is 3.18 au from the Sun and 3.53 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21557 |
| Provisional designation | 1998 QE73 |
| Orbit class | Main-belt Asteroid |
| Diameter | 12.2 km (#4,012 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.172 |
| Rotation period | 4.23 hours |
| Absolute magnitude (H) | 12.29 |
| Orbital period | 5.22 years |
| Semi-major axis | 3.01 au |
| Perihelion – aphelion | 2.83 – 3.18 au |
| Eccentricity | 0.0575 |
| Inclination | 8.74° |
| Closest distance between its orbit and Earth's (MOID) | 1.82 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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