(27240) Robhall Main-belt Asteroid
Discovered on 12 October 1999 by LONEOS at Anderson Mesa.
Rob Hall (b. 1994) is a Visitor Experience Lead for Lowell Observatory. He is a shift lead for the Starry Skies Shop and ticketing desks. Rob helps train people and maintain our point of sale and ticketing software and also helps with reporting.Naming citation (WGSBN Bull. 1, #4, 5), IAU / Minor Planet Center, via NASA/JPL
Where Robhall is today
Seen from above the solar system on 2026-10-14: Robhall is 2.37 au from the Sun and 2.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 27240 |
| Provisional designation | 1999 TR36 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.10 km (#12,496 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.289 |
| Rotation period | 389 hours |
| Absolute magnitude (H) | 14.31 |
| Orbital period | 3.77 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.22 – 2.63 au |
| Eccentricity | 0.0847 |
| Inclination | 13.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.22 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Rob
- (4955) Gold
- (8136) Landis
- (10389) Robmanning
- (12944) Robwalrecht
- (58365) Robmedrano
- (133743) Robertwoodward
- (343662) Robmorgan
All asteroids named after someone called Rob
Also discovered on 12 October 1999
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- (21821) Billryan
- (21861) Maryhedberg
- (21862) Joshuajones
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- (24053) Shinichiro
- (24074) Thomasjohnson
- (25377) Rolaberee
- (25378) Erinlambert
- (38470) Deleflie
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- (74824) Tarter