(10109) Sidhu Main-belt Asteroid
Discovered on 29 May 1992 by E. F. Helin at Palomar.
Jaskarn Singh “Sid” Sidhu (b. 1938) joined the Royal Astronomical Society of Canada, Victoria Centre, in 1985, and has been a mentor for new members. He coordinates the loan of Centre-owned telescopes and the club's schools program. Sid was awarded the RASC President's Award in 2010 for his leadership during the International Year of Astronomy.Naming citation (WGSBN Bull. 2, #2, 6), IAU / Minor Planet Center, via NASA/JPL
Where Sidhu is today
Seen from above the solar system on 2026-10-14: Sidhu is 2.61 au from the Sun and 3.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10109 |
| Provisional designation | 1992 KQ |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.49 km (#5,421 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.148 |
| Absolute magnitude (H) | 12.62 |
| Orbital period | 4.35 years |
| Semi-major axis | 2.66 au |
| Perihelion – aphelion | 2.20 – 3.13 au |
| Eccentricity | 0.176 |
| Inclination | 14.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.