| 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 | 2.4085AU |
| Perihelion | 1.9763 AU |
| 2.1924 AU | |
| Eccentricity | 0.0986 |
| 3.25yr (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] |
| 24h[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] | |
1513 Mátra (provisional designation1940 EB) is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 5 kilometers in diameter. It was discovered on 10 March 1940, by Hungarian astronomerGyörgy Kulin atKonkoly Observatory in Budapest, Hungary.[8] It was later named after theMátra mountain range.[2]
Mátra is a member of theFlora family, a large group of stonyS-type asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.4 AU once every 3 years and 3 months (1,186 days). Its orbit has aneccentricity of 0.10 and aninclination of 4° with respect to theecliptic.[1]
One day prior to Mátra's official discovery observation at Konkoly, aprecovery was taken atNice Observatory. However, the body'sobservation arc begins 10 years later in 1950, when it was observed at theLa Plata Observatory in Argentina.[8]
American astronomerRichard P. Binzel obtained a rotationallight-curve of Mátra from photometric observation in the 1980s. It gave a tentativerotation period of 24 hours with a brightness variation of 0.1magnitude (U=1).[7] As of 2017, a secure period still has yet to be determined.[3]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission, Mátra measures between 4.96 and 6.60 kilometers in diameter and its surface has analbedo between 0.189 and 0.34.[4][5][6]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from the family's largest body and namesake, the asteroid8 Flora – and calculates a diameter of 5.85 kilometers with anabsolute magnitude of 13.33.[3]
Thisminor planet was named after theMátra mountain range in northern Hungary, where the outstation of the discovering Konkoly Observatory is located.[2] The official naming citation was published by theMinor Planet Center on 1 February 1980 (M.P.C. 5182).[9]
