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NASA Confirms 60 feet Asteroid is on Course for a Close Encounter with Earth

All Sky Fireball Network

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA’s Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth’s atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Dec. 13, 2015, the network reported 29 fireballs.
(15 Geminids, 10 sporadics, 2 December Monocerotids, 1 Quadrantid, 1 alpha Canis Majorid)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point–Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

Near Earth Asteroids

Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

On December 13, 2015 there were potentially hazardous asteroids.

Recent & Upcoming Earth-asteroid encounters:

Asteroid
Date(UT)
Miss Distance
Size
2015 XU169
Dec 10
9.5 LD
16 m
1998 WT24
Dec 11
10.9 LD
1.1 km
2015 XA169
Dec 12
7.4 LD
15 m
2015 XR169
Dec 13
1.3 LD
8 m
2015 XX128
Dec 14
2.4 LD
25 m
2015 XX169
Dec 14
8.4 LD
14 m
2015 XN55
Dec 15
2.5 LD
15 m
2015 XY261
Dec 15
0.8 LD
16 m
2015 XL261
Dec 17
9.7 LD
42 m
2015 XE1
Dec 19
13.2 LD
29 m
2015 XN261
Dec 23
2.6 LD
31 m
2011 YD29
Dec 24
9.7 LD
24 m
2003 SD220
Dec 24
28.4 LD
1.8 km
2008 CM
Dec 29
22.8 LD
1.5 km
2004 MQ1
Jan 2
55.4 LD
1.1 km
1999 JV6
Jan 6
12.6 LD
410 m
1685 Toro
Jan 22
60.9 LD
1.7 km
2001 XR1
Jan 23
74.4 LD
1.5 km
2015 VC2
Jan 28
5.8 LD
15 m

Notes: LD means “Lunar Distance.” 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

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