1563 Noël
| Discovery | |
|---|---|
| Discovered by | S. Arend |
| Discovery site | Uccle Obs. |
| Discovery date | 7 March 1943 |
| Designations | |
| MPC designation | 1563 Noël |
|
Named after
|
Emanuel Arend (discoverer's son) |
| 1943 EG · 1930 EF | |
| main-belt · Flora | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.63 yr (31,641 days) |
| Aphelion | 2.3789 AU |
| Perihelion | 2.0038 AU |
| 2.1914 AU | |
| Eccentricity | 0.0856 |
| 3.24 yr (1,185 days) | |
| 286.84° | |
| 0° 18m 13.68s / day | |
| Inclination | 5.9828° |
| 53.649° | |
| 116.36° | |
| Physical characteristics | |
| Dimensions |
7.23±0.51 km 8.98 km (calculated) |
|
3.5483±0.0003 h 3.5486±0.0002 h 3.5488±0.0001 h 3.5495±0.0001 h 3.550±0.002 h |
|
| 0.24 (assumed) 0.370±0.051 |
|
| SMASS = Sa · S | |
| 12.4 | |
1563 Noël, provisional designation 1943 EG, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 7 March 1943, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle.
The S-type asteroid, classified as a transitional Sa-subtype on the SMASS taxonomic scheme, is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.0–2.4 AU once every 3 years and 3 months (1,185 days). Its orbit has an eccentricity of 0.09 and an inclination of 6° with respect to the ecliptic.Noël was first identified as 1930 EF at the Crimean Simeiz Observatory in 1930, extending its observation arc by 13 years prior to its official discovery observation.
Between April 2008 and June 2015, five rotational light-curves were obtained from photometric observations by Czech astronomer Petr Pravec at the Ondřejov Observatory near Prague. All light-curves show a well-defined rotation period between 3.548 and 3.550 hours with a brightness variation of 0.15 to 0.18 in magnitude (U=3). In April 2008, a photometric observation by astronomer Julian Oey at the Kingsgrove Observatory, Australia, gave a concurring period of 3.550±0.002 hours and an amplitude of 0.14 (U=3).
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