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Showing posts with label Near Earth Object. Show all posts
Showing posts with label Near Earth Object. Show all posts

Nov 10, 2019

I have done more updating to the table "Known-(with reasonably low uncertainty)-NEO-Earth-Close-Approaches-Less-Than-10LD(Nominal_Dist)-as-of-2019-11-08p"


I added
  • Planetary Orbits -- Scale Model
  • Solar System Objets -- Scale Model
Planetary Orbits [if the Earth was the size of a Basketball - with a radius of 12.0275 CM(4.73523622 inches)]
Planetary Orbits [if the Earth was the size of a Basketball - with a radius of 12.0275 CM(4.73523622 inches)]
Solar System Objets
[if the Earth was the size of a Basketball - with a radius of 12.0275 CM(4.73523622 inches)]


If  the Earth was the size of a basketball  how far would the Moon [and the NEO Earth Close Approaches  be]
If  the Earth was the size of a basketball  how far would the Moon [and the NEO Earth Close Approaches  be]?  Here is a spreadsheet of 9331 Close Approaches Less Than 10LD (Nominal_Dist) as of 2019 11-08p   [if the Earth was the size of a Basketball - with a
  radius of 12.0275 CM(4.73523622 inches)]

Nov 3, 2019

The Table "Known-(with reasonably low uncertainty)-NEO-Earth-Close-Approaches-Less-Than-10LD(Nominal_Dist)-as-of-2019-11-03a" Has been updated.


If  the Earth was the size of a basketball  how far would the Moon [and the NEO Earth Close Approaches  be]
If  the Earth was the size of a basketball  how far would the Moon [and the NEO Earth Close Approaches  be]?  Here is a spreadsheet of 9281 Close Approaches Less Than 10LD (Nominal_Dist) as of 2019 11-03a   [if the Earth was the size of a Basketball - with a
  radius
of 12.0275 CM(4.73523622 inches)]

NEO-Earth-Close-Approaches by number of Earth radii from 2010-January-01 to 2021-January-01
NEO-Earth-Close-Approaches by number of Earth radii from 2010-January-01 to 2021-January-01

If  the Earth was the size of a basketball  how far would the Moon [and the NEO Earth Close Approaches  be]? in feet 2010-January-01 to 2021-January-01
If  the Earth was the size of a basketball  how far would the Moon [and the NEO Earth Close Approaches  be]? in feet 2010-January-01 to 2021-January-01

Known NEO Earth Close Approaches <= Geosynchronous orbit From 2004-Mar-01 to 2029-May-01  (as of 2019-11-30)


Known NEO Earth Close Approaches <= Geosynchronous orbit
From 2004-Mar-01 to 2029-May-01
 (as of 2019-11-30)

Data from the NSA-JPL SBDB Close-Approach Data API https://ssd-api.jpl.nasa.gov/cad.api?dist-max=11LD&date-min=1900-01-01&date-max=2200-12-31&fullname=true&sort=dist

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 24, 2019

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%

Mar 17, 2019

The NEO(Aten) 2019 EA2 on on 2019-03-17


Image of the NEO(Aten) 2019 EA2 on 2019-03-17 from AstroCamp Observatory. Nerpio, Spain ( MPC I89) a stack of 20-60 Second Luminance BIN2 Images taken with iTelescope.net's (T07 TEL 0.43-m f/6.8 reflector + CCD)
By Steven M. Tilley
Image of the NEO(Aten) 2019 EA2 on 2019-03-17 from AstroCamp Observatory. Nerpio, Spain ( MPC I89) a stack of 20-60 Second Luminance BIN2 Images taken with iTelescope.net's (T07 TEL 0.43-m f/6.8 reflector + CCD)
By Steven M. Tilley
Image of the NEO(Aten) 2019 EA2 on 2019-03-17 from AstroCamp Observatory. Nerpio, Spain ( MPC I89) a stack of 20-60 Second Luminance BIN2 Images taken with iTelescope.net's (T07 TEL 0.43-m f/6.8 reflector + CCD)
By Steven M. Tilley
The NEO(Aten) 2019 EA2  was first observed by the Mt. Lemmon Survey on 2019-03-09. I has an absolute magnitude of 25.852 giving it  an estimated diameter of 18 m - 40 m. This asteroid will make a close approach of 0.8 lunar distance on 2019-Mar-22.
See :

https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2019EA2

https://newton.spacedys.com/neodys/index.php?pc=1.1.0&n=2019EA2

https://cneos.jpl.nasa.gov/sentry/details.html#?des=2019 EA2

http://www.hohmanntransfer.com/mn/19/19076_0317.htm

https://minorplanetcenter.net//mpec/K19/K19F08.html

https://cneos.jpl.nasa.gov/ca/

Jan 14, 2019

Observing The NEO 2019 AG7 on 2019-01-13 from Siding Spring Australia


The asteroid 2019 AG7(Classification: Aten [NEO])
[Estimated Diameter 23 m - 51 m]
on 2019-01-13
from Siding Spring Observatory,
 Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 12 - 5 second luminance BIN2 images
taken with iTelescope.net's (T30)
By Steven M. Tilley



The asteroid 2019 AG7(Classification: Aten [NEO])
[Estimated Diameter 23 m - 51 m]
on 2019-01-13
from Siding Spring Observatory,
 Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 12 - 5 second luminance BIN2 images
taken with iTelescope.net's (T30)
By Steven M. Tilley
..

The asteroid 2019 AG7(Classification: Aten [NEO])
[Estimated Diameter 23 m - 51 m]
on 2019-01-13
from Siding Spring Observatory,
 Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 12 - 5 second luminance BIN2 images
taken with iTelescope.net's (T30)
By Steven M. Tilley

Orbit diagram 2019 AG7
Earth Distance: 0.014 AU
Sun Distance: 0.988 AU
courtesy of NASA/JPL-Caltech
2019-01-13 13:25 UTC
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2019AG7


Background
(as of 2019-01-13)
  • Object:2019 AG7 
  • Orbit Type: Aten [NEO]
  • Approximate Diameter: 23 m to 51 m (75.4593 feet to  167.323) (Absolute Magnitude: H= 25.32)
  • On the Sentry Risk Table:  Yes 
    •  NOTE this is NOT a prediction of an impact but rather a statement there is insufficient observational data rule out an impact -- for more information read  Understanding Risk Pages by Jon Giorgini
    • "The likelihood of a collision is zero, or is so low as to be effectively zero. Also applies to small objects such as meteors and bodies that burn up in the atmosphere as well as infrequent meteorite falls that rarely cause damage.."
  •  On the NEODyS CLOMON2 risk page: Yes
  • First(Precovery) Observation was made: 2018 12 31.614374(By Pan-STARRS 1, Haleakala, US/Hawaii.  (MPC Code F51))
  • Discovery observation was made:2019 01 09.37994 (By the Catalina Sky Survey, US/Arizona. (MPC Code 703)
  • Last Observation(publish): 2019 01 12.582898 (By Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m) (MPC Code T12)
  • Data-Arc Span (publish): 12 days
  • Number of Optical Observations(published):54
  • Observatories Reporting (Published) Observations(MPC Code): 
    • (204) Schiaparelli Observatory,Italy. 
    • (291) LPL/Spacewatch II, US/Arizona.  
    • (474) Mount John Observatory, Lake Tekapo, New Zealand. 
    • (703) Catalina Sky Survey, US/Arizona. 
    • (807) Cerro Tololo Observatory, La Serena, Chile.
    • (F51) Pan-STARRS 1, Haleakala  (N20.707235 W156.255910)  US/Hawaii.
    • (F65) Haleakala-Faulkes Telescope North, US/Hawaii. 
    • (G40) Slooh.com Canary Islands Observatory, Canary Islands (Spain).
    • (I52) Steward Observatory, Mt. Lemmon Station
    • (J04) ESA Optical Ground Station, Tenerife, Canary Islands (Spain). 
    • (J95) Great Shefford,UK. 
    • (L01) Višnjan Observatory, Tičan, Croatia.
    • (T05) ATLAS-HKO, Haleakala, US/Hawaii. 
    • (T12) Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m), US/Hawaii. 
  • Perihelion Distance: 0.4829280277140071(AU)
  • Aphelion Distance: 1.007267187900272(AU)
  • Earth MOID: 0.00482722(AU),  1.879 (LD), 113.348270821(Earth Radii), 448,718.132 (Miles), or 722,141.833(KM)
  • Close-Approach to Earth: Will safely pass Earth on 2019-Jan-15 at a Nominal Distance of  0.0100782635426263(AU), 3.922(LD), 236.648370166 (Earth Radii), 936,833.123(Miles), or 1,507,686.766(KM)

Dec 17, 2018

Confirmation Images Of The NEOCP(NEO Confirmation Page) Object (A10aElq = 2002 XQ90) on 2018-12-13

The NEO 2002 XQ90 first observed at an apparent magnitude of 17.4 by Lincoln Laboratory ETS, New Mexico(MPC Code 704) on 2002-12-15, ten days after it made a approaches of 11.50 Lunar Distances (0.02954 Astronomical Units). This asteroid was observed until 2003-01-12 when it became too faint to be observed. On 2018-12-09 ATLAS-MLO(Asteroid Terrestrial-impact Last Alert System - Mauna Loa) on its nightly sweep of the nigh sky found an object at an apparent magnitude of an apparent magnitude of 19.1. Observations of this object were reported to the Minor Planet Center(MPC) using the observer-assigned temporary designation A10aElq. The object was posted the NEO Confirmation Page. Observer from around world submitted confirmation observations to the MPC.  In an effort to help in the confirmation I obtain 60-10 Second Luminance BIN2 taken using iTelescope.net's(T11).

I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 4 sets(stacks) of 14 images. 

A confirmation image of the NEOCP(NEO Confirmation Page) object (A10aElq = 2002 XQ90)
on 2018-12-13 from Mayhill, New Mexico [New Mexico Skies](MPC Code H06)
a stack of 14-10 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley
A confirmation image of the NEOCP(NEO Confirmation Page) object (A10aElq = 2002 XQ90)
on 2018-12-13 from Mayhill, New Mexico [New Mexico Skies](MPC Code H06)
a stack of 14-10 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley
A confirmation image of the NEOCP(NEO Confirmation Page) object (A10aElq = 2002 XQ90)
on 2018-12-13 from Mayhill, New Mexico [New Mexico Skies](MPC Code H06)
a stack of 14-10 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley
A confirmation image of the NEOCP(NEO Confirmation Page) object (A10aElq = 2002 XQ90)
on 2018-12-13 from Mayhill, New Mexico [New Mexico Skies](MPC Code H06)
a stack of 14-10 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley

I submitted my observations to the Minor Planet Center(MPC).
On 2018-12-16 the MPC issued MPEC 2018-Y02 : 2002 XQ90 and identify the A10aElq as 2002 XQ90.

Close-Approach (CA) Date and Time (TDB)  ± Time Uncertainty CA Distance Nominal (LD) CA Distance Nominal (au) CA Distance Minimum (LD) CA Distance Minimum (au)
1903-10-01 14:09  ± 00:02 24.91 0.06401 24.91 0.06401
1919-09-21 01:49  ± < 00:01 21.14 0.05433 21.14 0.05433
1935-09-09 11:52  ± < 00:01 42.43 0.10902 42.43 0.10902
1986-12-18 06:01  ± < 00:01 44.06 0.1132 44.05 0.1132
2002-12-05 01:14  ± < 00:01 11.5 0.02954 11.5 0.02954
2018-12-11 01:08  ± < 00:01 18.03 0.04633 18.03 0.04633
2079-09-25 12:59  ± < 00:01 22.64 0.05818 22.64 0.05818
2095-11-07 20:06  ± 00:03 29.34 0.07538 29.33 0.07538
2111-11-29 13:51  ± 00:02 16.73 0.04298 16.72 0.04297
2127-12-07 00:16  ± < 00:01 9.98 0.02565 9.98 0.02565
2143-12-23 11:58  ± 00:04 55.32 0.14216 55.31 0.14213
2188-09-08 17:20  ± 00:06 65.3 0.1678 65.28 0.16775

Also see: