(4993) Cossard Main-belt Asteroid
Discovered on 11 April 1983 by Debehogne, H., De Sanctis, G. at La Silla.
Italian archeoastronomer Guido Cossard (b. 1958) made a big contribution to the study of megalithic sites located in Valle d'Aosta, in particular on the interpretation of several engravings with astronomical meanings found there. Of particular importance is his work on the Coligny calendar dating back the Celtic period.Naming citation (20050407/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Cossard is today
Seen from above the solar system on 2026-10-14: Cossard is 2.25 au from the Sun and 3.23 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4993 |
| Provisional designation | 1983 GR |
| Orbit class | Main-belt Asteroid |
| Rotation period | 48.3 hours |
| Spectral type | V |
| Absolute magnitude (H) | 13.7 |
| Orbital period | 3.65 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.23 – 2.51 au |
| Eccentricity | 0.0603 |
| Inclination | 6.93° |
| 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 Guido
- (8555) Mirimao
- (10834) Zembsch-Schreve
- (12035) Ruggieri
- (22495) Fubini
- (27270) Guidotti
- (27287) Garbarino
- (31244) Guidomonzino
- (309426) Guidoschwarz
- (331605) Guidogryseels
All asteroids named after someone called Guido
More named asteroids discovered by Debehogne, H., De Sanctis, G.
- (2461) Clavel
- (2765) Dinant
- (2788) Andenne
- (2958) Arpetito
- (3016) Meuse
- (3121) Tamines
- (3235) Melchior
- (3268) De Sanctis
- (3308) Ferreri
- (3610) Decampos
- (3740) Menge
- (4192) Breysacher
← (4992) Kalman · (4994) Kisala →