(285263) 1998 QE 2
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Asteroid (285263) 1998 QE 2 |
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_1998_QE2,_Goldstone,_May_30,_2013.jpg)
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| The first radar images of the asteroid | |
| Properties of the orbit ( animation ) | |
| Orbit type | Cupid type |
| Major semi-axis | 2.4215 AU |
| eccentricity | 0.5710 |
| Perihelion - aphelion | 1.0387 AU - 3.8043 AU |
| Inclination of the orbit plane | 12.8542 ° |
| Length of the ascending node | 250.1715 ° |
| Sidereal period | 3.77 a |
| Physical Properties | |
| Medium diameter | 3 km |
| Albedo | 0.05 |
| Medium density | just under 1 g / cm³ |
| Rotation period | 4.75 h |
| Absolute brightness | 17.1 mag |
| history | |
| Explorer | LINEAR |
| Date of discovery | August 19, 1998 |
| 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. | |
(285263) 1998 QE 2 is an asteroid from Amor type that on 19 August 1998 by LINEAR was discovered. On May 31, 2013, it passed Earth 5.8 million kilometers away. Doppler radar observations during this time show a diameter of about three kilometers, a scarred, spherical shape with a slight equatorial bulge, and a companion about 750 meters tall with an orbital and rotation period of 31.3 hours. The mean distance on the almost circular, equatorial orbit is 6.2 km. The photometrically determined period of rotation of the main body is unusually long at 4.75 hours. The surface is comparatively dark and reddish. The temperature determined from the near-infrared spectrum suggests an albedo of 0.05.
Individual evidence
- ↑ Alessondra Springmann et al .: Radar Shape Model of Binary Near-Earth Asteroid (285263) 1998 QE2 . 45th Lunar and Planetary Science Conference, 17. – 21. March 2014, The Woodlands / Texas. LPI Contribution No. 1777, p. 1313. bibcode : 2014LPI .... 45.1313S