The 44 - 99 metre wide asteroid 2014 FR52 will made a close pass (16.6 lunar distances, 0.0427 AU), travelling at 6.77 km/second, to the Earth-Moon system on the 30th April 2014 @ 04:09 UT ±00:01.
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The Lunar Distance (LD), the distance between Earth and the Moon, equals 384,401 km, (or 0.00256 AU).
Ephemeris
Date TT R. A. (2000) Decl. Delta r Elong. Phase Mag 2014 04 29 14 00.55 -33 18.7 0.0429 1.047 160.3 19.0 17.9 2014 04 30 14 16.92 -37 21.2 0.0427 1.047 157.1 22.0 18.0 2014 05 01 14 35.18 -41 13.9 0.0428 1.046 153.7 25.3 18.1 2014 05 02 14 55.36 -44 50.2 0.0433 1.045 150.1 28.7 18.2 2014 05 03 15 17.37 -48 04.4 0.0442 1.045 146.5 32.1 18.4 2014 05 04 15 40.97 -50 52.0 0.0453 1.045 143.1 35.4 18.5 2014 05 05 16 05.73 -53 10.6 0.0468 1.045 139.9 38.5 18.7 2014 05 06 16 31.08 -54 59.6 0.0486 1.045 136.9 41.3 18.8 2014 05 07 16 56.35 -56 20.4 0.0506 1.045 134.2 43.8 19.0 2014 05 08 17 20.92 -57 15.6 0.0528 1.045 131.8 46.1 19.2 2014 05 09 17 44.22 -57 48.8 0.0552 1.045 129.6 48.0 19.3 2014 05 10 18 05.86 -58 04.2 0.0578 1.046 127.8 49.7 19.5 2014 05 11 18 25.65 -58 05.4 0.0605 1.047 126.2 51.1 19.6 2014 05 12 18 43.50 -57 55.9 0.0633 1.047 124.8 52.4 19.7 2014 05 13 18 59.47 -57 38.7 0.0662 1.048 123.6 53.3 19.9 2014 05 14 19 13.68 -57 16.2 0.0692 1.049 122.7 54.2 20.0 2014 05 15 19 26.27 -56 50.0 0.0723 1.051 121.9 54.8 20.1