(5011) Ptah
|
Asteroid (5011) Ptah |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Apollo type |
| Major semi-axis | 1.6357 AU |
| eccentricity | 0.5000 |
| Perihelion - aphelion | 0.8178 AU - 2.4536 AU |
| Inclination of the orbit plane | 7.4074 ° |
| Length of the ascending node | 10.7844 ° |
| Argument of the periapsis | 105.7443 ° |
| Sidereal period | 2.09 a |
| Physical Properties | |
| Absolute brightness | 16.4 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | September 24, 1960 |
| Another name | 6743 PL , 1983 TF 2 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(5011) Ptah is a near-Earth asteroid of the Apollo type , which was discovered on September 24, 1960 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery came about as part of the Palomar-Leiden survey , during which Tom Gehrels examined field plates recorded at the University of Leiden with the 120 cm Oschin Schmidt telescope of the Palomar observatory . Other asteroids of the Apollo type discovered in the Palomar-Leiden Survey in 1960 are (306367) Nut and 6344 PL .
The solar orbit of (5011) Ptah is strongly elliptical with an eccentricity of 0.5 . At the point closest to the sun (perihelion) it lies within the earth's orbit, at the point closest to the sun (aphelion) outside the orbit of Mars. The astronomer Duncan I. Steel sees in a publication from 1988 a connection between (5011) Ptah and the meteor shower of the Arietids .
In the MIT - UH - IRTF Joint Campaign for NEO Spectral Reconnaissance the asteroid the spectral Q in was bus - DeMeo associated system.
(5011) Ptah was named on May 16, 1992 after Ptah , a god of the ancient Egyptian religion , whose main cultural center was Memphis . Ptah was revered as a creator god and was the patron god of craftsmen.
Approaching the Earth
(5011) Ptah comes very close to earth. Between 1950 and 2100 the following approximations exist:
| date | Distance in AU |
|---|---|
| 3rd February 1961 | 0.19 |
| 20th January 1984 | 0.20 |
| January 21, 2007 | 0.20 |
| November 3, 2027 | 0.19 |
| February 11, 2030 | 0.17 |
| November 10, 2050 | 0.11 |
| November 13, 2073 | 0.09 |
| November 9, 2096 | 0.12 |
| March 4, 2099 | 0.12 |
See also
Web links
- (5011) Ptah in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (5011) Ptah in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
- Discovery Circumstances of (5011) Ptah according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Peter Jenniskens : Potentially Dangerous Space Rock Lost, and Found . News from October 18, 2007
- ↑ D. Olsson Stell: Identification of meteoroid streams from Apollo asteroids in the Adelaide radar orbit surveys . Icarus 75, 64, July 1988, pages 64-95 (English)
- ↑ Close Approaches in the NEODyS-2 database (English)
- ↑ 1 AU = approx. 150 million km