(5445) Williwaw Main-belt Asteroid
Discovered on 7 August 1991 by H. E. Holt at Palomar.
Named after a dramatic mountain on the skyline of Anchorage. A williwaw is a sudden seaward gust of cold air common along mountainous coasts at high latitudes. Mt. Williwaw was named by the Mountaineering Club of Alaska in 1963 and stands 5445 feet above sea level. It is the highest point in the Campbell Creek drainage. Name suggested by D. Hamilton.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Williwaw is today
Seen from above the solar system on 2026-10-14: Williwaw is 2.29 au from the Sun and 3.08 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5445 |
| Provisional designation | 1991 PA12 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.80 km (#5,916 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.301 |
| Rotation period | 10.7 hours |
| Absolute magnitude (H) | 12.46 |
| Orbital period | 4.09 years |
| Semi-major axis | 2.56 au |
| Perihelion – aphelion | 1.99 – 3.12 au |
| Eccentricity | 0.220 |
| Inclination | 6.11° |
| Closest distance between its orbit and Earth's (MOID) | 0.987 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 7 August 1991
- (5034) Joeharrington
- (5596) Morbidelli
- (6014) Chribrenmark
- (6015) Paularego
- (6016) Carnelli
- (6017) Robertmorehead
- (6018) Pierssac
- (8027) Robertrushworth
- (8280) Petergruber
More named asteroids discovered by H. E. Holt
- (4502) Elizabethann
- (4642) Murchie
- (4643) Cisneros
- (4711) Kathy
- (4745) Nancymarie
- (4955) Gold
- (4958) Wellnitz
- (5034) Joeharrington
- (5132) Maynard
- (5134) Ebilson
- (5185) Alerossi
- (5235) Jean-Loup
← (5444) Gautier · (5446) Heyler →