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Nov 1, 2019

NEO Made a Close Flyby on Halloween Wow it was ~ 4.60 (Metaphorical) inches From a Basketball Size Earth


A 1  to 7 meters NEO made a close approache  on Halloween  it was ~ 4.60 (Metaphorical) Inches from a Basketball Size Earth. This asteroid discovered by the Catalina Sky Survey  and given the observer-assigned temporary designation. C0PPEV1(Now  2019 UN13) So far there is 18 observations from four observing stations over 3.7 hours. This object has gone out of range telescopes so new observations  runs will have wait until  2019 UN13 comes back in range(if ever).

If  the Earth was the size of a basketball  how far would the Moon [and the NEO Earth Close Approaches  be]? 
  Given the fact it was  the 2nd closest approache it is making buzz online ---by the way  it is too small to do anything.





Scout: NEOCP Hazard Assessment of C0PPEV1 archive
Pseudo-MPEC for C0PPEV1 - Project Pluto ..
Spooky Halloween asteroid flyby one of the closest near misses ever seen A big space boulder scopes out the trick-or-treating situation here on Earth.(Cnet)
Earth Impact Effects Program

Oct 31, 2019

The Discovery of 2019 RU3.

This artist's concept shows a broken-up asteroid.
ImageCourtesy NASA/JPL-Caltech
Today (for October 31, 2019) Dr. Al Grauer reports on the podcast Travelers In The Night (562-Monster Space Rock) On his teammate at Catalina Sky Survey, Hannes Gröller, discovery of 2019 RU3. (also see 562-Additional Information-Monster Space Rock)



Oct 29, 2019

NASA-JPL Released Episode 4 [Deflecting Disaster] of Season Two of 'On a Mission' Podcast Targets Asteroids

This artist's concept shows a broken-up asteroid.
ImageCourtesy NASA/JPL-Caltech

Today[2019-10-29] NASA-JPL released Episode 4 [Deflecting Disaster] of  Season Two of 'On a Mission' Podcast Targets Asteroids. "Unlike the dinosaurs, we have a space program. There are many ways we could steer an asteroid off its path towards Earth.? " This is the 4th of a 10-episode podcast host by Leslie Mullen. New episodes will be released weekly. For more information, see "Season Two of 'On a Mission' Podcast Targets Asteroids"[NASA JPL press release].

Oct 28, 2019

The 2019 UB8 2019-10-29 Flyby! How Close? Is Close?

(2019 UB8) approximate (0.50 LD) flyby distance from Earth
This image adapted by Steven M Tilley from the image the original
Earth-Moon.png by Nickshanks
 under licensed under the
Creative Commons Attribution 2.5 Generic license
Tonight(2019-Oct-28/29) the NEO 2019 UB8 (4.4 m - 9.7 m) will do a flyby(A.K.A NEO Earth Close Approaches) of a Nominal Distance of 0.50 LD (0.00127 AU) ~191,000 KM (~ 119,000 miles). Sorting by nominal distance, this close approach is listed in the top 270 of 22,500+ entries in JPL's close approach database. (As of 2019-Oct-28) Flybys within one LD are quite common from what we "know" NEOs flybys within one LD a few times every week or so.

If  the Earth was the size of a basketball  how far would the Moon be?
What is Close

Close is a relative term. "Close" to a major sports venue is not the same as "close" to the ER. If one were to think of a basketball-size Earth, it may in understanding what is "close" and what is "far." In this, basketball-size Earth system, the ISS would be at ~0.76 CM (0.3 inches); we had NEO Flybys at 10.35 CM (4.1 inches) [ 2011 CQ1 on 2011-Feb-04] before. The Moon would range from ~673.41 CM (~22.0 Ft) to ~753.81 CM (~24.7 Ft). 2019 UB8 will be ~347.62 CM (~11.4 Ft) from the basketball. To see 2019 UB8 tonight, check out the Virtual Telescope Project.

Oct 24, 2019

Oct 23, 2019

NASA-JPL Released Episode 3[Bracing For A Crash] of Season Two of 'On a Mission' Podcast Targets Asteroids

This artist's concept shows a broken-up asteroid.
ImageCourtesy NASA/JPL-Caltech
This week NASA-JPL released Episode 3[Bracing For A Crash] of Season Two of 'On a Mission' Podcast Targets Asteroids. "[What] [i]f a big asteroid is heading our way, how does NASA prepare for the oncoming disaster? " This is the 3rd of a 10-episode podcast host by Leslie Mullen. New episodes will be released weekly. For more information, see "Season Two of 'On a Mission' Podcast Targets Asteroids"[NASA JPL press release].

Oct 19, 2019

NEO Earth Close Approaches within 25 Lunar distance(dist_min)

We getting better at finding NEO(s) however we have not been looking for very long. Many factors like the full moon, cloudy nights, the lack of large telescopes(i.e. poor sky coverage), etc can keep us from discovering them. So, therefore, we do not "know" about many of the Close Approaches that have happened.  Much of the "known" Close Approaches is only our best postdiction and predictions  Here is An  NEO Earth Close Approaches within 25 Lunar distance(dist_min) table [ Data was taken from NASA JPL SBDB Close-Approach Data API on 2019-10-14.] and scatter plots.  The apparent gaps are most likely were "unknown" Close Approaches would go.

"known" Close Approaches within 25 Lunar distance(nominal)

 
"known" Close Approaches within 10 Lunar distance(nominal)
"known" Close Approaches within 1 Lunar distance(nominal)

"known" Close Approaches within 0.5 Lunar distance(nominal)
"known" Close Approaches within 0.25 Lunar distance(nominal)
"known" Close Approaches within 0.1(Geosynchronous orbit) Lunar distance(nominal)
"known" Close Approaches within 25 Lunar distance(nominal) 1/1/2014  12:00:00 AM to 10/13/2019  11:59:00 PM

"known" Close Approaches within 10 Lunar distance(nominal) 1/1/2014  12:00:00 AM to 10/13/2019  11:59:00 PM
"known" Close Approaches within 1Lunar distance(nominal) 1/1/2014  12:00:00 AM to 10/13/2019  11:59:00 PM
"known" Close Approaches within 0.5 Lunar distance(nominal) 1/1/2014  12:00:00 AM to 10/13/2019  11:59:00 PM
"known" Close Approaches within 0.25 Lunar distance(nominal) 1/1/2014  12:00:00 AM to 10/13/2019  11:59:00 PM
"known" CA within 0.1(Geosynchronous orbit)  Lunar distance(nominal) 1/1/2014  12:00:00 AM to 10/13/2019  11:59:00 PM
"known" Close Approaches dist nominal 0.1(Geosynchronous orbit) LD vs Approximate Diameters (M) A=0.15

"known" Close Approaches dist nominal 0.25 LD vs Approximate Diameters (M) A=0.15

"known" Close Approaches dist nominal 0.5 LD vs Approximate Diameters (M) A=0.15


"known" Close Approaches dist nominal 1 LD vs Approximate Diameters (M) A=0.15

"known" Close Approaches dist nominal 10 LD vs Approximate Diameters (M) A=0.15
"known" Close Approaches dist nominal 25 LD vs Approximate Diameters (M) A=0.15
"known" Close Approaches by absolute magnitude (H)

To get an idea what sizes of "known" Asteroids here is a graph and table created JPL Small-Body Database Search Engine (Asteroids [Numbered and Unnumbered] on 2019-10-18)

upper Approximate Diameters (KM) A=0.15 vs Number of NEOs   upper Approximate Diameters (KM)  A=0.15 vs the number of all All Asteroids

Approximate Diameters (KM)  A=0.15
upper(H) lower(H)  upper lower All Asteroids NEOs NEOs has a % of All Asteroids
-1.50 -1.00 6,847.85 5,439.44 1 0.000% 0 0.000% 0.000%
-1.5 -1.00 6,847.85 5,439.44 1 0.000% 0 0.000% 0.000%
-1 -0.50 5,439.44 4,320.70 1 0.000% 0 0.000% 0.000%
-0.5 0.00 4,320.70 3,432.06 1 0.000% 0 0.000% 0.000%
0 0.50 3,432.06 2,726.18 1 0.000% 0 0.000% 0.000%
0.5 1.00 2,726.18 2,165.48 0 0.000% 0 0.000% 0.000%
1 1.50 2,165.48 1,720.10 0 0.000% 0 0.000% 0.000%
1.5 2.00 1,720.10 1,366.33 2 0.000% 0 0.000% 0.000%
2 2.50 1,366.33 1,085.31 2 0.000% 0 0.000% 0.000%
2.5 3.00 1,085.31 862.09 0 0.000% 0 0.000% 0.000%
3 3.50 862.09 684.79 7 0.001% 0 0.000% 0.000%
3.5 4.00 684.79 543.94 17 0.002% 0 0.000% 0.000%
4 4.50 543.94 432.07 28 0.003% 0 0.000% 0.000%
4.5 5.00 432.07 343.21 49 0.006% 0 0.000% 0.000%
5 5.50 343.21 272.62 98 0.012% 0 0.000% 0.000%
5.5 6.00 272.62 216.55 173 0.021% 0 0.000% 0.000%
6 6.50 216.55 172.01 285 0.034% 0 0.000% 0.000%
6.5 7.00 172.01 136.63 505 0.061% 0 0.000% 0.000%
7 7.50 136.63 108.53 581 0.070% 0 0.000% 0.000%
7.5 8.00 108.53 86.21 636 0.077% 0 0.000% 0.000%
8 8.50 86.21 68.48 557 0.067% 0 0.000% 0.000%
8.5 9.00 68.48 54.39 455 0.055% 0 0.000% 0.000%
9 9.50 54.39 43.21 359 0.043% 1 0.005% 0.000%
9.5 10.00 43.21 34.32 309 0.037% 0 0.000% 0.000%
10 10.50 34.32 27.26 342 0.041% 0 0.000% 0.000%
10.5 11.00 27.26 21.65 422 0.051% 0 0.000% 0.000%
11 11.50 21.65 17.20 607 0.073% 1 0.005% 0.000%
11.5 12.00 17.20 13.66 1,087 0.132% 0 0.000% 0.000%
12 12.50 13.66 10.85 1,880 0.228% 1 0.005% 0.000%
12.5 13.00 10.85 8.62 3,688 0.446% 2 0.009% 0.000%
13 13.50 8.62 6.85 6,765 0.819% 2 0.009% 0.000%
13.5 14.00 6.85 5.44 11,956 1.447% 7 0.033% 0.001%
14 14.50 5.44 4.32 20,126 2.436% 9 0.043% 0.001%
14.5 15.00 4.32 3.43 32,511 3.935% 31 0.147% 0.004%
15 15.50 3.43 2.73 51,611 6.247% 44 0.209% 0.005%
15.5 16.00 2.73 2.17 81,244 9.834% 76 0.361% 0.009%
16 16.50 2.17 1.72 114,481 13.856% 113 0.536% 0.014%
16.5 17.00 1.72 1.37 132,890 16.085% 166 0.788% 0.020%
17 17.50 1.37 1.09 124,987 15.128% 257 1.219% 0.031%
17.5 18.00 1.09 0.86 96,977 11.738% 353 1.675% 0.043%
18 18.50 0.86 0.68 63,784 7.720% 576 2.733% 0.070%
18.5 19.00 0.68 0.54 34,062 4.123% 705 3.345% 0.085%
19 19.50 0.54 0.43 15,035 1.820% 919 4.360% 0.111%
19.5 20.00 0.43 0.34 6,651 0.805% 994 4.716% 0.120%
20 20.50 0.34 0.27 3,270 0.396% 1,099 5.214% 0.133%
20.5 21.00 0.27 0.22 2,126 0.257% 1,174 5.570% 0.142%
21 21.50 0.22 0.17 1,601 0.194% 1,090 5.172% 0.132%
21.5 22.00 0.17 0.14 1,334 0.161% 1,045 4.958% 0.126%
22 22.50 0.14 0.11 1,189 0.144% 1,031 4.892% 0.125%
22.5 23.00 0.11 0.09 1,116 0.135% 1,037 4.920% 0.126%
23 23.50 0.09 0.07 1,155 0.140% 1,129 5.357% 0.137%
23.5 24.00 0.07 0.05 1,229 0.149% 1,221 5.793% 0.148%
24 24.50 0.05 0.04 1,294 0.157% 1,291 6.125% 0.156%
24.5 25.00 0.04 0.03 1,301 0.157% 1,301 6.173% 0.157%
25 25.50 0.03 0.03 1,202 0.145% 1,202 5.703% 0.145%
25.5 26.00 0.03 0.02 1,031 0.125% 1,031 4.892% 0.125%
26 26.50 0.02 0.02 932 0.113% 932 4.422% 0.113%
26.5 27.00 0.02 0.01 756 0.092% 756 3.587% 0.092%
27 27.50 0.01 0.01 530 0.064% 530 2.515% 0.064%
27.5 28.00 0.01 0.01 383 0.046% 383 1.817% 0.046%
28 28.50 0.01 0.01 229 0.028% 229 1.086% 0.028%
28.5 29.00 0.01 0.01 133 0.016% 133 0.631% 0.016%
29 29.50 0.01 0.00 101 0.012% 101 0.479% 0.012%
29.5 30.00 0.00 0.00 52 0.006% 52 0.247% 0.006%
30 30.50 0.00 0.00 27 0.003% 27 0.128% 0.003%
30.5 31.00 0.00 0.00 14 0.002% 14 0.066% 0.002%
31 31.50 0.00 0.00 5 0.001% 5 0.024% 0.001%
31.5 32.00 0.00 0.00 2 0.000% 2 0.009% 0.000%
32 32.50 0.00 0.00 4 0.000% 4 0.019% 0.000%
32.5 33.00 0.00 0.00 0 0.000% 0 0.000% 0.000%
33 33.50 0.00 0.00 1 0.000% 1 0.005% 0.000%
33.5 34.00 0.00 0.00 0 0.000% 0 0.000% 0.000%
34 34.50 0.00 0.00 0 0.000% 0 0.000% 0.000%
34.5 35.00 0.00 0.00 0 0.000% 0 0.000% 0.000%
35 35.50 0.00 0.00 0 0.000% 0 0.000% 0.000%
35.5 36.00 0.00 0.00 0 0.000% 0 0.000% 0.000%