1513 Mátra
Main-belt asteroid
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1513 Mátra (provisional designation 1940 EB) is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 10 March 1940, by Hungarian astronomer György Kulin at Konkoly Observatory in Budapest, Hungary.[8] It was later named after the Mátra mountain range.[2]
| Discovery[1] | |
|---|---|
| Discovered by | G. Kulin |
| Discovery site | Konkoly Obs. |
| Discovery date | 10 March 1940 |
| Designations | |
| (1513) Matra | |
Named after | Mátra (mountain range)[2] |
| 1940 EB · 1940 EO | |
| main-belt · Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.67 yr (24,351 days) |
| Aphelion | 2.4085 AU |
| Perihelion | 1.9763 AU |
| 2.1924 AU | |
| Eccentricity | 0.0986 |
| 3.25 yr (1,186 days) | |
| 324.55° | |
| 0° 18m 12.96s / day | |
| Inclination | 3.9773° |
| 136.22° | |
| 27.140° | |
| Physical characteristics | |
| Dimensions | 4.96±0.70 km[4] 5.19±0.92 km[5] 5.85 km (calculated)[3] 6.603±0.271 km[6] |
| 24 h[7] | |
| 0.189±0.024[6] 0.24 (assumed)[3] 0.31±0.19[5] 0.34±0.13[4] | |
| S[3] | |
| 13.33[1][3][5][6] · 13.43[4] | |
Orbit and classification
Mátra is a member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0â2.4 AU once every 3 years and 3 months (1,186 days). Its orbit has an eccentricity of 0.10 and an inclination of 4° with respect to the ecliptic.[1]
One day prior to Mátra's official discovery observation at Konkoly, a precovery was taken at Nice Observatory. However, the body's observation arc begins 10 years later in 1950, when it was observed at the La Plata Observatory in Argentina.[8]
Physical characteristics
Rotation period
American astronomer Richard P. Binzel obtained a rotational light-curve of Mátra from photometric observation in the 1980s. It gave a tentative rotation period of 24 hours with a brightness variation of 0.1 magnitude (U=1).[7] As of 2017, a secure period still has yet to be determined.[3]
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Mátra measures between 4.96 and 6.60 kilometers in diameter and its surface has an albedo between 0.189 and 0.34.[4][5][6]
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 â derived from the family's largest body and namesake, the asteroid 8 Flora â and calculates a diameter of 5.85 kilometers with an absolute magnitude of 13.33.[3]
Naming
This minor planet was named after the Mátra mountain range in northern Hungary, where the outstation of the discovering Konkoly Observatory is located.[2] The official naming citation was published by the Minor Planet Center on 1 February 1980 (M.P.C. 5182).[9]
