(73704) Hladiuk Outer Main-belt Asteroid
Discovered on 6 October 1991 by A. Lowe at Palomar.
Donald W. Hladiuk (b. 1957) is a professional geologist in Calgary, Alberta. For over 20 years, he has presented sky highlights on a local radio morning show. He has led numerous astronomical expeditions with the Calgary chapter of the Royal Astronomical Society of Canada, of which he has twice been president.Naming citation (20040713/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hladiuk is today
Seen from above the solar system on 2026-10-14: Hladiuk is 3.12 au from the Sun and 2.18 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 73704 |
| Provisional designation | 1991 TW15 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 4.54 km (#11,548 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.124 |
| Absolute magnitude (H) | 14.83 |
| Orbital period | 5.83 years |
| Semi-major axis | 3.24 au |
| Perihelion – aphelion | 3.07 – 3.41 au |
| Eccentricity | 0.0530 |
| Inclination | 12.1° |
| Closest distance between its orbit and Earth's (MOID) | 2.09 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Donald
- (2956) Yeomans
- (4794) Bogard
- (6107) Osterbrock
- (6478) Gault
- (6688) Donmccarthy
- (8875) Fernie
- (9122) Hunten
- (9177) Donsaari
- (9295) Donaldyoung
- (9448) Donaldavies
- (11267) Donaldkessler
- (11419) Donjohnson
All asteroids named after someone called Donald
Also discovered on 6 October 1991
- (9957) Raffaellosanti
- (55755) Blythe
- (65696) Pierrehenry
- (65697) Paulandrew
- (65698) Emmarochelle
- (73703) Billings
- (85200) Johnhault
- (96192) Calgary
- (96193) Edmonton
- (100049) Cesarann
- (100050) Carloshernandez
- (100051) Davidhernandez