2011 CQ1
| Discovery[1] | |
|---|---|
| Discovered by |
Catalina Sky Survey Richard A. Kowalski |
| Discovery date | February 4, 2011 |
| Designations | |
| MPC designation | 2011 CQ1 |
| Aten NEO[2] | |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 5 | |
| Aphelion | 1.0087 AU (150.90 Gm) (Q) |
| Perihelion | 0.66454 AU (99.414 Gm) (q) |
| 0.83661 AU (125.155 Gm) (a) | |
| Eccentricity | 0.20567 (e) |
| 0.77 yr (279.5 d) | |
| 18.607° (M) | |
| 1.2880°/day (n) | |
| Inclination | 5.2445° (i) |
| 315.23° (Ω) | |
| 335.40° (ω) | |
| Earth MOID | 0.000166307 AU (24,879.2 km) |
| Jupiter MOID | 4.09715 AU (612.925 Gm) |
| Physical characteristics | |
| Dimensions | ~1 meter (39 in) |
| 14.2 (2011 peak)[3] | |
| 32.1[2] | |
|
| |
2011 CQ1 is a meteoroid discovered on February 4, 2011 by Richard A. Kowalski, at the Catalina Sky Survey.[1] On the same day the meteoroid passed within 0.85 Earth radii (5,480 kilometers (3,410 mi)) of Earth's surface, and was perturbed from the Apollo class to the Aten class of near-Earth objects.[4] With a relative velocity of only 9.7 km/s,[2] had the asteroid passed less than 0.5 Earth radii from Earth's surface, it would have fallen as a brilliant fireball. The meteoroid is between 80 centimeters (31 in) and 2.6 meters (100 in) wide.[4] The meteoroid was removed from the Sentry Risk Table on February 5, 2011.[5]
| Parameter | Epoch | aphelion (Q) |
perihelion (q) |
Semi-major axis (a) |
eccentricity (e) |
Period (p) |
inclination (i) |
Longitude ascending node (Ω) |
Mean anomaly (M) |
Argument of perihelion (ω) |
|---|---|---|---|---|---|---|---|---|---|---|
| Units | AU | (days) | (°) | |||||||
| Pre-flyby | 2011-Jan-26 | 1.347 | 0.9096 | 1.128 | 0.1940 | 437.9 | 1.073° | 135.4° | 310.9° | 58.59° |
| Post-flyby | 2011-Feb-08 | 1.009 | 0.6624 | 0.8360 | 0.2076 | 279.2 | 5.296° | 315.4° | 220.6° | 335.1° |
References
- 1 2 "MPEC 2011-C12 : 2011 CQ1". IAU Minor Planet Center. 2011-02-04. Retrieved 2013-02-27. (K11C01Q)
- 1 2 3 4 "JPL Close-Approach Data: (2011 CQ1)" (last observation: 2011-02-04; arc: 1 day). Retrieved 31 March 2016.
- ↑ "2011 CQ1 Ephemerides for 4 February 2011". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 2013-02-28.
- 1 2 Don Yeomans & Paul Chodas (4 February 2011). "Very Small Asteroid Makes Close Earth Approach on February 4, 2011". News. NASA/JPL Near-Earth Object Program Office. Retrieved 18 September 2011.
- ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2012-03-19.
External links
- 2011 CQ1 at the JPL Small-Body Database
This article is issued from Wikipedia - version of the 9/28/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.