List of asteroid close approaches to Earth in 2014
| Time of discovery of asteroids which came closer to Earth than the Moon in 2014 |
Below is the list of asteroid close approaches to Earth in 2014.
Timeline of known close approaches less than one lunar distance from Earth in 2014
A list of known near-Earth asteroid close approaches less than 1 lunar distance from Earth in 2014.For reference, the radius of Earth is approximately or 0.0166 Lunar distances.
The orbit of geosynchronous satellites, however, is or 0.110 Lunar distances. This year, 3 asteroids were detected which traveled nearer than this, most notably 2014 AA, which impacted. This list does not include any of the other 32 objects that collided with earth in 2014, none of which were discovered in advance, but were recorded by sensors designed to detect detonation of nuclear devices .
| Date of closest approach | Date discovered | Object | Nominal geocentric distance | Nominal geocentric distance | Size | Closer approach to Moon | Refs | |
| 2014-01-01 | 2014-01-02 | 0.25 | 5–10 | 28.8 | Yes | |||
| 2014-01-02 | 2014-01-01 | 2014 AA | 0.001 | 2–4 | 30.9 | |||
| 2014-01-08 | 2014-01-10 | 0.96 | 15–30 | 26.6 | Yes | |||
| 2014-01-09 | 2014-01-10 | 0.34 | 2–5 | 29.9 | ||||
| 2014-01-10 | 2014-01-10 | 0.48 | 10–20 | 27.2 | ||||
| 2014-02-21 | 2014-02-22 | 0.67 | 7–16 | 27.8 | ||||
| 2014-03-05 | 2014-02-28 | 0.91 | 20–40 | 25.7 | ||||
| 2014-03-06 | 2014-03-05 | 2014 EF | 0.44 | 4–9 | 29.0 | |||
| 2014-03-06 | 2014-03-05 | 2014 EC | 0.16 | 6–14 | 28.2 | |||
| 2014-03-09 | 2014-03-11 | 0.68 | 5–11 | 28.7 | Yes | |||
| 2014-03-30 | 2014-04-04 | 0.43 | 20–50 | 25.4 | Yes | |||
| 2014-04-03 | 2014-04-04 | 0.30 | 5–11 | 28.6 | ||||
| 2014-05-03 | 2014-04-28 | 0.76 | 6–14 | 28.0 | ||||
| 2014-05-07 | 2014-05-06 | 0.28 | 3–8 | 29.3 | ||||
| 2014-05-10 | 2014-05-10 | 0.26 | 3–8 | 29.2 | ||||
| 2014-05-26 | 2014-05-28 | 0.89 | 6–14 | 28.0 | ||||
| 2014-05-28 | 2014-05-27 | 0.23 | 3–8 | 29.4 | ||||
| 2014-06-03 | 2014-06-05 | 0.54 | 10–20 | 27.2 | ||||
| 2014-06-03 | 2014-06-02 | 0.043 | 4–8 | 29.1 | ? | |||
| 2014-06-22 | 2014-06-24 | 0.64 | 10–23 | 27.0 | Yes | |||
| 2014-07-24 | 2014-07-25 | 0.52 | 4–9 | 29.0 | ||||
| 2014-07-25 | 2014-07-26 | 0.70 | 4–9 | 29.0 | ||||
| 2014-08-31 | 2014-09-01 | 2014 RA | 0.15 | 5–10 | 28.8 | |||
| 2014-09-07 | 2014-09-01 | 2014 RC | 0.10 | 11–25 | 26.8 | |||
| 2014-09-20 | 2014-09-20 | 0.21 | 4–9 | 29.0 | ||||
| 2014-10-01 | 2014-10-02 | 2014 TL | 0.26 | 8–17 | 27.6 | |||
| 2014-10-19 | 2014-10-24 | 0.66 | 7–15 | 28.0 | ||||
| 2014-10-27 | 2014-10-25 | 0.43 | 8–19 | 27.4 | ||||
| 2014-11-13 | 2014-11-17 | 0.57 | 2–5 | 30.3 | Yes | |||
| 2014-11-15 | 2014-11-17 | 0.86 | 9–23 | 27.1 | Yes | |||
| 2014-12-07 | 2014-11-24 | 0.98 | 3–7 | 29.4 | Yes | |||
| 2014-12-26 | 2014-12-27 | 0.91 | 16–35 | 26.1 |
Timeline of close approaches less than one Lunar distance from the Moon in 2014
The number of asteroids listed here are significantly less than those of asteroids approaching Earth for several reasons:- Asteroids approaching Earth not only move faster, but are brighter and are easier to detect with modern surveys due to these factors
- Asteroids approaching closer to Earth are higher priority to confirm, and only confirmed asteroids are listed with a lunocentric approach distance
- Those which make close approaches to the Moon are frequently lost in its glare, making them harder to confirm, and are more easily discovered during the new Moon, when the Moon is too close to the Sun for any asteroids to be detected while they are near to the Moon anyway.
| Date of closest approach | Object | Nominal lunocentric distance | Nominal lunocentric distance | Size | approach distance to Earth | |
| 2014-01-01 | 0.24 | 4–12 | 28.8 | 0.25 | ||
| 2014-01-02 | 2014 AA | 0.93 | 1–5 | 30.9 | impact | |
| 2014-01-07 | 0.55 | 10–33 | 26.6 | 0.96 | ||
| 2014-01-08 | 0.95 | 7–23 | 27.4 | 1.50 | ||
| 2014-01-09 | 0.93 | 2–7 | 29.9 | 0.34 | ||
| 2014-01-10 | 0.85 | 7–22 | 27.5 | 0.48 | ||
| 2014-03-05 | 0.97 | 15–49 | 25.7 | 0.91 | ||
| 2014-03-06 | 2014 EC | 0.9992 | 5–16 | 28.2 | 0.16 | |
| 2014-03-09 | 0.64 | 4–13 | 28.6 | 0.68 | ||
| 2014-03-17 | 2014 FE | 0.90 | 7–24 | 27.3 | 1.10 | |
| 2014-03-29 | 0.097 | 18–57 | 25.4 | 0.43 | ||
| 2014-05-10 | 0.84 | 3–10 | 29.2 | 0.26 | ||
| 2014-05-28 | 0.67 | 3–9 | 29.3 | 0.23 | ||
| 2014-06-03 | 0.78 | 8–27 | 27.0 | 0.54 | ||
| 2014-06-04 | 0.42 | 3–10 | 29.1 | 0.043 | ||
| 2014-06-22 | 0.37 | 8–26 | 27.1 | 0.64 | ||
| 2014-08-31 | 2014 RA | 0.79 | 4–11 | 28.9 | 0.15 | |
| 2014-09-07 | 2014 RC | 0.33 | 9–30 | 26.8 | 0.10 | |
| 2014-09-20 | 0.80 | 3–10 | 29.1 | 0.21 | ||
| 2014-10-01 | 2014 TL | 0.74 | 6–19 | 27.8 | 0.26 | |
| 2014-10-27 | 0.53 | 7–23 | 27.4 | 0.43 | ||
| 2014-11-13 | 0.48 | 2–6 | 30.4 | 0.57 | ||
| 2014-11-15 | 0.70 | 8–26 | 27.1 | 0.86 | ||
| 2014-12-04 | 0.58 | 3–8 | 29.6 | 0.98 |
Additional examples
An example list of near-Earth asteroids that passed more than 1 lunar distance from Earth in 2014.- passed 6.2 lunar distances from Earth on 10 February 2014.
- passed more than from Earth on 17–18 February 2014.
- may have passed as close as 0.97 lunar distances from Earth from the Moon on either April 14 or 15th, 2014, but the nominal orbit calculates an approach of 1.29 lunar distances from Earth.
- passed 1.1 lunar distances from Earth on 3 June 2014.
- passed 3.25 lunar distances from Earth on 8 June 2014.
- passed from Earth on 18 August 2014.
- passed roughly from Earth on 1 September 2014.
- The orbit of 2009 RR with an observation arc of only 4 days predicted that it could pass just inside 1 lunar distance on 2014-09-16, but the orbital uncertainties show that it could have passed as much as from Earth.
- passed 1.1 lunar distances from Earth on 23 September 2014.
- passed 1.5 lunar distances from Earth on 24 October 2014.