| Discovery[1] | |
|---|---|
| Discovered by | Félix Aguilar Obs. |
| Discovery site | Félix Aguilar Obs. |
| Discovery date | 28 July 1968 |
| Designations | |
| (10988) Feinstein | |
Named after | Alejandro Feinstein (Argentine astronomer)[2] |
| 1968 OL · 1992 NH | |
| main-belt · Phocaea[3] background[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 48.27 yr (17,630 days) |
| Aphelion | 2.8707AU |
| Perihelion | 1.6887 AU |
| 2.2797 AU | |
| Eccentricity | 0.2592 |
| 3.44yr (1,257 days) | |
| 136.20° | |
| 0° 17m 10.68s / day | |
| Inclination | 24.043° |
| 117.60° | |
| 127.38° | |
| Physical characteristics | |
| Dimensions | 3.43 km(calculated)[3] |
| 2.6723±0.0005h[a] | |
| 0.23(assumed)[3] | |
| S[3][5] | |
| 14.09±0.16[a] · 14.3[1] · 14.54[3] · 14.65±0.23[5] | |
10988 Feinstein (provisional designation1968 OL) is a stony Phocaeaasteroid from the inner regions of theasteroid belt. Approximately 3.4 kilometers in diameter, it was discovered on 28 July 1968 by astronomers at theFélix Aguilar Observatory in El Leoncito,Argentina. The asteroid was named after Argentine astronomerAlejandro Feinstein in 2008.[2]
Dynamically, Feinstein is a member of thePhocaea family (701),[3] a large inner-beltasteroid family of stony composition. However, no membership to any known family could be found when using theHierarchical Clustering Method.[4]
Feinstein orbits the Sun in theinner main-belt at a distance of 1.7–2.9 AU once every 3 years and 5 months (1,257 days). Its orbit has aneccentricity of 0.26 and aninclination of 24° with respect to theecliptic.[1] The body'sobservation arc begins at El Leoncito with its official discovery observation in 1968.[2]
Feinstein has been characterized as a common stonyS-type asteroid byPanSTARRS photometric survey,[5] which agrees with the family's overallspectral type.[6]: 23
In May 2016, a rotationallightcurve of Feinstein was obtained from photometric observations by Czech astronomerPetr Pravec atOndřejov Observatory. Lightcurve analysis gave a shortrotation period of 2.6723 hours with a brightness amplitude of 0.11magnitude (U=3-).[a]
TheCollaborative Asteroid Lightcurve Link assumes analbedo of 0.23 – derived from25 Phocaea, the Phocaea family's largest member and namesake – and calculates a mean-diameter of 3.43 kilometers based on anabsolute magnitude of 14.54.[3]
Thisminor planet was named after Argentinian astronomerAlejandro Feinstein (born 1928) atLa Plata Astronomical Observatory in La Plata, and one of the co-founders of the Argentinian Astronomical Association (Spanish:Asociación Argentina de Astronomía).[2] The official naming citation was published by theMinor Planet Center on 20 May 2008 (M.P.C. 62929).[7]
