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5011 Ptah
From Wikipedia, the free encyclopedia
| Discovery A | |
|---|---|
| Discoverer | C. J. van Houten, I. van Houten-Groeneveld, T. Gehrels |
| Discovery date | September 24, 1960 |
| Alternate designations B |
6743 P-L |
| Category | Apollo Mars crosser |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.500 |
| Semi-major axis (a) | 1.634 AU |
| Perihelion (q) | 0.818 AU (122.318 Gm) |
| Aphelion (Q) | 2.450 AU (366.546 Gm) |
| Orbital period (P) | 2.092 a (763.949 d) |
| Mean orbital speed | 45.471 km/s |
| Inclination (i) | 7.425° |
| Longitude of the ascending node (Ω) |
9.556° |
| Argument of perihelion (ω) |
107.247° |
| Mean anomaly (M) | 159.679° |
| Physical characteristics D | |
| Dimensions | 1.1 - 2.6 km |
| Mass | |
| Density | |
| Surface gravity | |
| Escape velocity | |
| Rotation period | h |
| Spectral class | |
| Absolute magnitude | 17.1 |
| Albedo (geometric) | |
| Mean surface temperature |
|
5011 Ptah is a highly eccentric Mars crossing and Apollo asteroid, discovered in 1960 and named after an Egyptian god, Ptah. It passes within 30 Gm (0.2 AU) of Earth 15 times between 1900 and 2100. The next one is on January 21, 2007, at 29.6 Gm.
See also: List of asteroids
| Minor planets | ||
|---|---|---|
| Previous minor planet | 5011 Ptah | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
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