2020 CD 3
|
Asteroid 2020 CD 3 |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Apollo type , NEA |
| Major semi-axis | 1.0253 AU |
| eccentricity | 0.0384 |
| Perihelion - aphelion | 0.9860 AU - 1.0648 AU |
| Inclination of the orbit plane | 0.8447 ° |
| Length of the ascending node | 138.5739 ° |
| Argument of the periapsis | 339.6916 ° |
| Time of passage of the perihelion | 19th January 2020 |
| Sidereal period | 1.04 a |
| Physical Properties | |
| Absolute brightness | 31.672 (± 0.34008) mag |
| 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. | |
2020 CD₃ , also known as C26FED2 , is a tiny asteroid near the Earth . It was Earth's temporary satellite until the beginning of March 2020 .
discovery
The asteroid was discovered on February 15, 2020 by astronomers Theodore Pruyne and Kacper Wierzchos as part of the Mount Lemmon Survey or the Catalina Sky Survey at the Mount Lemmon Observatory . The discovery of the asteroid was announced by the Minor Planet Center on February 25, 2020 after observations ruled out the possibility that the object was man-made. After the 2006 RH120, discovered in 2006, it is the second temporary satellite on Earth to be discovered in situ . Due to its tentative orbit, 2020 CD3 may have been captured by Earth between 2017 and 2018.
Around March 7, 2020, the “mini moon” left Earth orbit again.
Characteristic
2020 CD3 has an absolute magnitude of 32, which indicates that it is very small. Assuming 2020 CD3 has a low albedo characteristic of dark carbonaceous C-type asteroids, its diameter is likely to be 1.9-3.5 meters. The Minor Planet Center classifies CD3 as a Cupid asteroid in 2020 because it orbits the Sun beyond Earth, even though the JPL Small-Body Database considers it part of the Apollo orbit-traversing group of asteroids .
Web links
- Earth has probably caught a mini moon. Spektrum.de , February 27, 2020, accessed on February 27, 2020 .
Individual evidence
- ↑ https://minorplanetcenter.net/mpec/K20/K20DA4.html
- ↑ Marina Koren: A Fleeting Moment in the Solar System . In: The Atlantic , March 20, 2020; accessed April 2, 2020.
- ↑ http://www.minorplanetcenter.net/db_search/show_object?object_id=2020+CD3
- ↑ https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=54000953