1924 Horus
Main-belt asteroid
From Wikipedia, the free encyclopedia
1924 Horus, provisional designation 4023 P-L, is a dark asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. Discovered during the PalomarâLeiden survey in 1960, it was later named after Horus from Egyptian mythology.[3][7]
| Discovery[1] | |
|---|---|
| Discovered by | C. J. van Houten I. van Houten G. T. Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 24 September 1960 |
| Designations | |
| (1924) Horus | |
| Pronunciation | /ËhÉËrÉs/[2] |
Named after | Horus (Egyptian mythology)[3] |
| 4023 P-L · 1951 BD 1969 BA | |
| main-belt | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 56.69 yr (20,707 days) |
| Aphelion | 2.6465 AU |
| Perihelion | 2.0331 AU |
| 2.3398 AU | |
| Eccentricity | 0.1311 |
| 3.58 yr (1,307 days) | |
| 203.62° | |
| 0° 16m 31.44s / day | |
| Inclination | 2.7294° |
| 350.27° | |
| 2022-Oct-26 | |
| 152.36° | |
| Physical characteristics | |
| Dimensions | 12.3 km 12.986±0.135[4] |
| 6.183±0.006[5][6] | |
| 0.070±0.004[4] 0.0888 ± 0.011 | |
| 13.5 | |
Orbit and classification
Horus was discovered on 24 September 1960, by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden, on photographic plates taken by Tom Gehrels at Palomar. On the same date, the trio of astronomers also discovered 1912 Anubis, 1923 Osiris and 5011 Ptah.[7]
The survey designation "P-L" stands for PalomarâLeiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful PalomarâLeiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand asteroid discoveries.[8]
Physical characteristics
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Horus measures 12.986 kilometers in diameter and its surface has an albedo of 0.070.[4] The body has a rotation period of 6.183 hours.[5][6]
Naming
This minor planet was named after Horus, the falcon-headed king of the sky and the stars, and son of the Egyptian god Osiris.[3] The official naming citation was published by the Minor Planet Center on 1 November 1979 (M.P.C. 5013).[9]
