| 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 | /ˈhɔːrəs/[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 | 2.6465AU |
| Perihelion | 2.0331 AU |
| 2.3398 AU | |
| Eccentricity | 0.1311 |
| 3.58yr (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 | |
1924 Horus, provisional designation4023 P-L, is a darkasteroid from the inner regions of theasteroid belt, approximately 12 kilometers in diameter. Discovered during thePalomar–Leiden survey in 1960, it was later named afterHorus from Egyptian mythology.[3][7]
Horus was discovered on 24 September 1960, byCornelis Johannes van Houten andIngrid van Houten-Groeneveld at Leiden, on photographic plates taken byTom Gehrels at Palomar. On the same date, the trio of astronomers also discovered1912 Anubis,1923 Osiris and5011 Ptah.[7]
Thesurvey designation "P-L" stands forPalomar–Leiden, named after Palomar Observatory andLeiden Observatory, which collaborated on the fruitfulPalomar–Leiden survey in the 1960s. Gehrels used Palomar'sSamuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped thephotographic plates to Ingrid and Cornelis van Houten at Leiden Observatory whereastrometry was carried out. The trio are credited with the discovery ofseveral thousand asteroid discoveries.[8]
According to the survey carried out by NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Horus measures 12.986 kilometers in diameter and its surface has analbedo of 0.070.[4] The body has arotation period of 6.183 hours.[5][6]
Thisminor planet was named afterHorus, 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 theMinor Planet Center on 1 November 1979 (M.P.C. 5013).[9]
