| Discovery [1] | |
|---|---|
| Discovered by | C. van Houten I. van Houten T. Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 24 September 1960 |
| Designations | |
| (5011) Ptah | |
| Pronunciation | /ˈtɑː/[2] |
Named after | Ptah (Egyptian mythology)[3] |
| 6743 P-L · 1983 TF2 | |
| Apollo · NEO · PHA [1][4] Mars-crosser | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 55.90 yr (20,419 days) |
| Aphelion | 2.4533 AU |
| Perihelion | 0.8181 AU |
| 1.6357 AU | |
| Eccentricity | 0.4998 |
| 2.09 yr (764 days) | |
| 29.031° | |
| 0° 28m 15.96s / day | |
| Inclination | 7.4075° |
| 10.780° | |
| 105.75° | |
| Earth MOID | 0.0256 AU · 10 LD |
| Physical characteristics | |
| 1.56 km (calculated)[5] | |
| 0.20 (assumed)[5] | |
| Q [5][6] | |
| 16.4[1][5] | |
5011 Ptah (/ˈtɑː/; prov. designation: 6743 P-L) is a near-Earth object and potentially hazardous asteroid of the Apollo group. It was discovered by astronomers with the Palomar–Leiden survey on 24 September 1960. The rare O-type asteroid on an eccentric orbit measures approximately 1.6 kilometers (1 mile) in diameter. It was named after the Ancient Egyptian deity Ptah.
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