(5381) Sekhmet ( lat. Sekhmet ) is a small near-Earth asteroid from the Aton group , which belongs to the spectral class S with a relatively high albedo [1] . It has a very elongated orbit, therefore, in the process of its movement around the Sun, it suppresses not only the Earth ’s orbit, but also Venus . The asteroid was discovered on May 14, 1991 by the American astronomer Carolyn Shoemaker at the Palomar Observatory and named after Sekhmet , the Egyptian goddess of war [2] .
- The orbit of the asteroid Sekhmet and its position in the solar system
| (5381) Sekhmet | |
|---|---|
| Asteroid | |
| Opening | |
| Discoverer | Carolyn Shoemaker |
| Place of discovery | Palomar |
| Discovery date | May 14, 1991 |
| Eponym | Sekhmet |
| Alternative notation | 1991 JY |
| Category | NEA ( Atons ) |
| Orbital characteristics | |
| Age of September 30, 2012 JD 2456200.5 | |
| Eccentricity ( e ) | 0.2962124 |
| Semimajor axis ( a ) | 141.738 million km (0.9474606 AU ) |
| Perihelion ( q ) | 99.754 million km (0.666811 AU) |
| Aphelion ( Q ) | 183.723 million km (1,2281102 AU) |
| Circulation Period ( P ) | 336.853 days (0.922 g. ) |
| Average orbital speed | 29.916 km / s |
| Inclination ( i ) | 48.97073 ° |
| Longitude node (Ω) | 58.55130 ° |
| Perihelion Argument (ω) | 37.42211 ° |
| Median Anomaly ( M ) | 176.72445 ° |
| physical characteristics | |
| Diameter | ~ 1 km |
| Rotation period | 3 h |
| Spectral class | S |
| Apparent magnitude | 18.22 m (current) |
| Absolute magnitude | 16.5 m |
| Current distance from the sun | 0.713 a. e. |
| Current distance from earth | 1,287 a. e. |
Conducted in December 2003, a group of astronomers from the Arecibo Observatory conducted radar studies of this body, which showed signs of the possible presence of Sekhmet’s small 300 meters in diameter satellite , which revolves around an asteroid at a distance of 1.5 km [1] . But this discovery has not yet been confirmed (2012). On May 17, 2015, an asteroid (5381) Sekhmet with a diameter of three kilometers approached the Earth at 24 million kilometers (62 distances to the Moon ).
See also
- List of Asteroids ( 5301-5400 )
- Classifications of Minor Planets
- List of asteroids crossing the orbit of Venus
- List of asteroids crossing the Earth’s orbit
Notes
- ↑ 1 2 Neish, CD; Nolan, MC; Howell, ES & Rivkin, AS (2003), "Radar Observations of Binary Asteroid 5381 Sekhmet", Bulletin of the American Astronomical Society T. 35: 1421
- ↑ Schmadel, Lutz D. Dictionary of Minor Planet Names . - Fifth Revised and Enlarged Edition. - B. , Heidelberg, N. Y .: Springer, 2003 .-- P. 460. - ISBN 3-540-00238-3 .