(18204) Emilycostello Main-belt Asteroid
Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Emily Costello (b. 1990) is an American planetary scientist who studies the evolution of planetary surfaces exposed to space. Her research involves impact gardening, secondary cratering, space weathering, and regolith properties and development on a variety of targets. She is a Participating Scientist on NASA’s Lucy mission to the Jupiter Trojan asteroids.Naming citation (WGSBN Bull. 6, #10, 8), IAU / Minor Planet Center, via NASA/JPL
Where Emilycostello is today
Seen from above the solar system on 2026-10-14: Emilycostello is 2.35 au from the Sun and 2.26 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18204 |
| Provisional designation | 3065 P-L |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.92 |
| Orbital period | 4.44 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 2.35 – 3.05 au |
| Eccentricity | 0.130 |
| Inclination | 5.60° |
| Closest distance between its orbit and Earth's (MOID) | 1.34 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Emily
- (10282) Emilykramer
- (12669) Emilybrisnehan
- (13730) Willis
- (15576) Munday
- (16189) Riehl
- (16227) Emilykang
- (17099) Emilytianshi
- (18086) Emilykraft
- (19463) Emilystoll
- (27102) Emilychen
- (27328) Pohlonski
- (27456) Sarkisian
All asteroids named after someone called Emily
Also discovered on 24 September 1960
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- (1744) Harriet
- (1776) Kuiper
- (1777) Gehrels
- (1795) Woltjer
- (1808) Bellerophon
- (1809) Prometheus
- (1810) Epimetheus
- (1811) Bruwer
- (1812) Gilgamesh
- (1846) Bengt
- (1868) Thersites