(18727) Peacock Main-belt Asteroid
Discovered on 22 May 1998 by LONEOS at Anderson Mesa.
Anthony Peacock (b. 1950) was project scientist for the ESA Exosat and XMM-Newton missions. A leading expert on detectors for use in high-energy astrophysics, he has also developed the S-CAM, a cryogenic camera having an ultrafast photon-counting detector, for ground-based optical astronomy.Naming citation (WGSBN Bull. 4, #9, 6), IAU / Minor Planet Center, via NASA/JPL
Where Peacock is today
Seen from above the solar system on 2026-10-14: Peacock is 2.79 au from the Sun and 3.10 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18727 |
| Provisional designation | 1998 KW3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.9 km (#4,605 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0710 |
| Rotation period | 4.42 hours |
| Absolute magnitude (H) | 13.57 |
| Orbital period | 5.53 years |
| Semi-major axis | 3.13 au |
| Perihelion – aphelion | 2.76 – 3.50 au |
| Eccentricity | 0.119 |
| Inclination | 5.38° |
| Closest distance between its orbit and Earth's (MOID) | 1.75 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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