(39795) Marson Jupiter Trojan
Discovered on 30 September 1997 by Spacewatch at Kitt Peak.
Roberto Marson (1944–2011) was a multi-sport athlete who competed in four Paralympics from 1964 to 1976 winning a total of 26 medals. He was named Outstanding Athlete at the 1968 games after winning ten gold medals. He was added to the International Paralympian Hall of Fame in 2012.Naming citation (WGSBN Bull. 1, #1, 17), IAU / Minor Planet Center, via NASA/JPL
Where Marson is today
Seen from above the solar system on 2026-10-14: Marson is 5.58 au from the Sun and 6.56 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 39795 |
| Provisional designation | 1997 SF28 |
| Orbit class | Jupiter Trojan |
| Diameter | 18.3 km (#2,443 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0520 |
| Absolute magnitude (H) | 12.68 |
| Orbital period | 11.8 years |
| Semi-major axis | 5.18 au |
| Perihelion – aphelion | 4.68 – 5.68 au |
| Eccentricity | 0.0972 |
| Inclination | 6.73° |
| Closest distance between its orbit and Earth's (MOID) | 3.70 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Roberto
- (4881) Robmackintosh
- (7323) Robersomma
- (7794) Sanvito
- (8742) Bonazzoli
- (9478) Caldeyro
- (10579) Diluca
- (10590) Ragazzoni
- (12470) Pinotti
- (14919) Robertohaver
- (14964) Robertobacci
- (16996) Dahir
- (19224) Orosei
All asteroids named after someone called Roberto
Also discovered on 30 September 1997
- (9990) Niiyaeki
- (10894) Nakai
- (13691) Akie
- (15387) Hanazukayama
- (15906) Yoshikaneda
- (29458) Pearson
- (37786) Tokikonaruko
- (46727) Hidekimatsuyama