| Discovery[1] | |
|---|---|
| Discovered by | A. Galád A. Pravda |
| Discovery site | Modra Obs. |
| Discovery date | 7 September 1995 |
| Designations | |
| (13154) Petermrva | |
Named after | Peter Mrva (Slovakamateur astronomer)[2] |
| 1995 RC · 1972 TL6 | |
| main-belt · Flora[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.58 yr (16,282 days) |
| Aphelion | 2.5790AU |
| Perihelion | 1.8401 AU |
| 2.2095 AU | |
| Eccentricity | 0.1672 |
| 3.28yr (1,200 days) | |
| 230.03° | |
| 0° 18m 0.36s / day | |
| Inclination | 5.5206° |
| 331.59° | |
| 59.149° | |
| Physical characteristics | |
| Dimensions | 4.170±0.239 km[4][5] 4.176 km[6] 4.18 km(taken)[3] |
| 2.9848±0.0002h[a] 2.98502±0.00004 h[7] | |
| 0.1464[6] 0.152±0.020[4][5] | |
| S[3] | |
| 14.1[1] · 14.11±0.03(R)[a] · 14.46±0.32[8] · 14.56[4] · 14.6±0.058[6] | |
13154 Petermrva, provisional designation1995 RC, is a stony Floraasteroid from the inner regions of theasteroid belt, approximately 4.2 kilometers in diameter. It was discovered on 7 September 1995, by Slovak astronomersAdrián Galád and Alexander Pravda at theModra Observatory in the Bratislava Region of Slovakia.[9] The asteroid was named after Slovak amateur astronomerPeter Mrva.[2]
Petermrva is a member of theFlora family, one of the largest families ofstony asteroids. It orbits the Sun in theinner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,200 days). Its orbit has aneccentricity of 0.17 and aninclination of 6° with respect to theecliptic.[1] The firstprecovery was taken atCrimea-Nauchnij in 1972, extending the asteroid'sobservation arc by 23 years prior to its discovery.[9]
Two well-defined rotationallightcurves ofPetermrva were obtained from photometric observations at the Modra andOndřejov Observatory rendered arotation period of2.98502±0.00004 and2.9848±0.0002 hours, with a brightness amplitude of 0.18 and 0.14 inmagnitude, respectively (U=3/3).[7][a]
According to the thermal observation carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Petermrva measures 4.2 kilometer and has an untypically lowalbedo of 0.15.[4]
Thisminor planet is named after Slovak amateur astronomer Peter Mrva (born 1962) who participated in the construction the discovering Modra Observatory, after which the minor planet11118 Modra is named. He was also one of the first observers at the newly installed observatory. The second discoverer, Alexander Pravda, is thankful for his explanation and inspiration in some fields of astronomy and computer graphics.[2] The approved naming citation was published by theMinor Planet Center on 27 April 2002 (M.P.C. 45338).[10]
