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.

In about 45 minutes from now (now = 10/31/19 7:00 am PDT), newly-discovered #asteroid C0PPEV1 will pass only 6200 km above Earth's surface. 45 minutes ago it was passing through Earth's shadow.
This is much closer than our geostationary satellites. https://t.co/q4qKuaUHjb pic.twitter.com/jsG2kaBY4O

— Tony Dunn (@tony873004) October 31, 2019

Newly-discovered #asteroid C0PPEV1 paid a heavy price for almost striking Earth this morning.
Earth's gravity bent its trajectory, sending its aphelion out to the asteroid belt.https://t.co/q4qKuaUHjb pic.twitter.com/vzx5zpxGBG

— Tony Dunn (@tony873004) October 31, 2019

From Bill Gray: C0PPEV1 = near-miss
this object is about to come _very_ close to us, perigee at 12520 +/- 70 km from the geocenter :https://t.co/5EoksMRcsg

People in Asia and Australia might be able to get
some astrometry on it over the next hour or two.

— Asteroid Initiatives (@AsteroidEnergy) October 31, 2019

A near-Earth asteroid, identified as C0PPEV1, was spotted early Thursday by the Catalina Sky Survey, based in Arizona. It extremely close, 6,200 km above Africa at 15:45 UTC.https://t.co/Vrqjx6T3QX

— Tom Ruen (@Tom_Ruen) October 31, 2019

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

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.

2002 XQ90 Earth Close Approaches (JPL)

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:

• MPEC 2002-Y19 : 2002 XQ90
• The Tracking News - Earth's Busy Neighborhood(Sunday, 16 December 2018)
• NEODyS-2 (2002 XQ90)
• MPEC Index(Project Pluto)
• M.P.E.C. statistics

Confirmation images of the NEO 2018 RP8

The NEO(Aten) 2018 RP8 (approximate diameters 320 m - 710 m [ 1049.87 foot -  2329.4 foot]) was first observed by ATLAS HKO (Asteroid Terrestrial-Impact Last Alert System)  on 2018-09-15. The observations were submitted to the Minor Planet Center(MPC) in Cambridge, Massachusetts using the observer-assigned temporary designation A108wr0. This "new" asteroid was posted to the NEO Confirmation Page(NEOCP) informing observers around the world that "A108wr0" needed confirmation observations.  In an  effort to help in the confirmation  I obtain 60-15 Second Luminance BIN2 taken using  iTelescope.net's(T21).


I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 4 sets(stacks) of  15 images.  Each image was shifted match movement of  A108wr0.
.

Confirmation image of the NEOCP(NEO Confirmation Page)object A108wr0 (now 2018 RP8)

from Mayhill, New Mexico 

[New Mexico Skies](MPC Code H06) 

15-15 second luminance BIN2 images

 taken with iTelescope.net's (T21)

By Steven M. Tilleyn

Confirmation image of the NEOCP(NEO Confirmation Page)object A108wr0 (now 2018 RP8)
from Mayhill, New Mexico 
[New Mexico Skies](MPC Code H06) 
15-15 second luminance BIN2 images
 taken with iTelescope.net's (T21)
By Steven M. Tilleyn

Confirmation image of the NEOCP(NEO Confirmation Page)object A108wr0 (now 2018 RP8)
from Mayhill, New Mexico 
[New Mexico Skies](MPC Code H06) 
15-15 second luminance BIN2 images
 taken with iTelescope.net's (T21)
By Steven M. Tilleyn

Confirmation image of the NEOCP(NEO Confirmation Page)object A108wr0 (now 2018 RP8)
from Mayhill, New Mexico 
[New Mexico Skies](MPC Code H06) 
15-15 second luminance BIN2 images
 taken with iTelescope.net's (T21)
By Steven M. Tilleyn

Confirmation image of the NEOCP(NEO Confirmation Page)object A108wr0 (now 2018 RP8)

from Mayhill, New Mexico 

[New Mexico Skies](MPC Code H06) 

60-15 second luminance BIN2 images

 taken with iTelescope.net's (T21)

By Steven M. Tilleyn

I submitted my observations to the  Minor Planet Center(MPC).

On 2018 Sept. 8 at 21:42 UTC the MPC Issued MPEC 2018-S25 : 2018 RP8 assigning the objet the provisonal designation 2018 RP8.

How Are Minor Planets Named?

Confirmation images of the NEO 2018 RQ1

The NEO(Aten) 2018 RQ1 (approximate diameters 39 m - 88 m [127.953 foot - 288.7139 foot]) was first observed by the Catalina Sky Survey on 2018-09-07. It was posted to the NEO Confirmation Page(NEOCP) under the observer-assigned temporary designations "ZR388AE"  In an  effort to help in the confirmation I obtain 60-30 Second Luminance BIN2 taken using  iTelescope.net's(T31).

Orbit diagram for 2018 RQ1
Earth Distance: 0.031 au
Sun Distance: 1.025 au
2018-09-08 16:25 UTC
courtesy of NASA/JPL-Caltech
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018RQ1

Orbit diagram for 2018 RQ1
Earth Distance: 0.031 au
Sun Distance: 1.025 au
2018-09-08 16:25 UTC
courtesy of NASA/JPL-Caltech
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018RQ1

Orbit diagram for 2018 RQ1
Earth Distance: 0.031 au
Sun Distance: 1.025 au
2018-09-08 16:25 UTC
courtesy of NASA/JPL-Caltech
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018RQ1

I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 3 sets(stacks) of  20 images.  Each image was shifted match movement of  2018 RQ1(ZR388AE).

A confirmation image of the NEO 2018 RQ1(ZR388AE)
on 2018-09-08 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 20-30 second luminance BIN2 images
taken with iTelescope.net's (T31)
by Steven M. Tilley

A confirmation image of the NEO 2018 RQ1(ZR388AE)
on 2018-09-08 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 20-30 second luminance BIN2 images
taken with iTelescope.net's (T31)
by Steven M. Tilley

A confirmation image of the NEO 2018 RQ1(ZR388AE)
on 2018-09-08 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 20-30 second luminance BIN2 images
taken with iTelescope.net's (T31)
by Steven M. Tilley

A confirmation image of the NEO 2018 RQ1(ZR388AE)
on 2018-09-08 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 60-30 second luminance BIN2 images
taken with iTelescope.net's (T31)
by Steven M. Tilley

I submitted my observations to the  Minor Planet Center(MPC). On 2018 Sept. 8 at 21:42 UTC the MPC Issued MPEC 2018-R63 : 2018 RQ1  assigning the objet the provisonaldesignation 2018 RQ1.

How Are Minor Planets Named?

Helping With The Confirmation of the Mars-crossing Asteroid 2018 PO23

On 2018-08-13 I check the NEO Confirmation Page(NEOCP) and  an object clalled ZTF00Th.

Orbit diagram for 2018 PO23
(view 1)
2018-08-13 12:35 UTC
Earth Distance: 0.723 au
Sun Distance: 1.691 au
courtesy of NASA/JPL-Caltech
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018PO23

Orbit diagram for 2018 PO23
(view 2)
2018-08-13 12:35 UTC
Earth Distance: 0.723 au
Sun Distance: 1.691 au
courtesy of NASA/JPL-Caltech
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018PO23

Orbit diagram for 2018 PO23
(view 3)
2018-08-13 12:35 UTC
Earth Distance: 0.723 au
Sun Distance: 1.691 au
courtesy of NASA/JPL-Caltech
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018PO23

I was able to obtain a  set of  4-60 second luminance BIN2 images taken with iTelescope.net's (T30) and a set 12-60 second luminance BIN2 images taken with iTelescope.net's (T30). I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 3 sets(stacks) of 3 images.  Each image was shifted match movement of ZTF00Th.

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-13 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 4-60 second luminance BIN2 images
taken with iTelescope.net's (T30)
Steven M. Tilley

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-13 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 4-60 second luminance BIN2 images
taken with iTelescope.net's (T30)
By Steven M. Tilley

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-13 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 4-60 second luminance BIN2 images
taken with iTelescope.net's (T30)
Steven M. Tilley

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-13 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 4-60 second luminance BIN2 images
taken with iTelescope.net's (T30)
By Steven M. Tilley

Then I  submitted this batch of  4 observation to the Minor Planet Center.
About 14 hours later I  obtain a  set of  60-60 second luminance BIN2 images taken with iTelescope.net's(T11) I had Astrometrica stack 3 stacks of 15 images ( note a star keep me from having  4 stacks of 15 images)
 

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-14 from from Mayhill,
New Mexico [New Mexico Skies](MPC Code H06)
 a stack of 15-60 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-14 from from Mayhill,
New Mexico [New Mexico Skies](MPC Code H06)
 a stack of 15-60 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-14 from from Mayhill,
New Mexico [New Mexico Skies](MPC Code H06)
 a stack of 15-60 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley

Then I  submitted this batch of  3 observation to the Minor Planet Center.
After another ten  hours I  obtain a  set of  60-60 second luminance BIN2 images taken with iTelescope.net's(T17) I had Astrometrica stack 3 stacks of 15 images ( note the first 9 images where on the "wrong" side of the meridian flip)

 A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-14 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15-60 second luminance BIN2 images
taken with iTelescope.net's (T17)
By Steven M. Tilley

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-14 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15-60 second luminance BIN2 images
taken with iTelescope.net's (T17)
By Steven M. Tilley

A confirmation image of the Mars-crossing Asteroid 2018 PO23
on 2018-08-14 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15-60 second luminance BIN2 images
taken with iTelescope.net's (T17)
By Steven M. Tilley

Then I  submitted this batch of 3  observation to the Minor Planet Center.

After 110 observations,  collectively made from 27 observatories from around the world, at Aug. 16.90, 2018 the Minor Planet Center gave  ZTF00Th. the provisional designation 2018 PO23 and removed it form the NEOCP.

The of Confirmation of the Asteroid the 2018 PL9

On 2018-08-07 at ~ 10:30 UTC  observers with ATLAS (Asteroid Terrestrial-Impact Last Alert System) imaged a "new" asteroid.  Over the next  ~ 35 minutes, the  ATLAS term would take three additional observations.  The observations were submitted to the Minor Planet Center(MPC) in Cambridge, Massachusetts using the observer-assigned temporary designation A107TVP.  This  "new" asteroid was posted to the NEO Confirmation Page(NEOCP) informing observers around the world that "A107TVP" needed confirmation observations.  

  

Asteroid Orbit diagram for 2018 PL9 [NEO(Amor)]
Approximate Diameter 350 to 900 Meters
2018-08-07 10:30 UTC  
courtesy of NASA/JPL-Caltec
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018PL9

Asteroid Orbit diagram for 2018 PL9 [NEO(Amor)]
Approximate Diameter 350 to 900 Meters
2018-08-07 10:30 UTC  
courtesy of NASA/JPL-Caltec
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018PL9

About five hours later I checked the NEOCP saw A107TVP listed(by this time it had "precovery" observations from Pan-STARRS 1, Haleakala.), and decided to take confirmation images. I had iTelescope.Net's T30 to started taking 60 second luminance BIN2 images and was able to obtain 28 images. I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 3 sets(stacks) of 9 images.  Each image was shifted match movement of A107TVP.

A confirmation image of the NEOCP(NEO Confirmation Page)

object A107TVP(now 2018 PL9) on 2018-08-07

 from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 

a stack of 9 - 60 second luminance BIN2 images 

 taken with iTelescope.net's (T30) 

 By Steven M. Tilley

A confirmation image of the NEOCP(NEO Confirmation Page)

object A107TVP(now 2018 PL9) on 2018-08-07

 from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 

a stack of 9 - 60 second luminance BIN2 images 

 taken with iTelescope.net's (T30) 

 By Steven M. Tilley

A confirmation image of the NEOCP(NEO Confirmation Page)

object A107TVP(now 2018 PL9) on 2018-08-07

 from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 

a stack of 9 - 60 second luminance BIN2 images 

 taken with iTelescope.net's (T30) 

 By Steven M. Tilley

I submitted three observations of A107TVP to the MPC in the "new" "Astrometry Data Exchange Standard (ADES)" format [PSV -"Pipe Separated Values"] at 2018-08-07T18:00:23.907Z. I got the  automatic acknowledgement e-mail at  18:03 (UTC) and an "Automated NEOCP candidate posting results" e-mail at 18:11 (UTC).

On 2018-08-08 I took  and submitted  three additional observations.

A confirmation image of the NEOCP(NEO Confirmation Page)

object A107TVP(now 2018 PL9) on 2018-08-08

 from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 

a stack of 10 - 60 second luminance BIN2 images 

 taken with iTelescope.net's (T30) 

 By Steven M. Tilley

A confirmation image of the NEOCP(NEO Confirmation Page)

object A107TVP(now 2018 PL9) on 2018-08-08

 from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 

a stack of 10 - 60 second luminance BIN2 images 

 taken with iTelescope.net's (T30) 

 By Steven M. Tilley

A confirmation image of the NEOCP(NEO Confirmation Page)

object A107TVP(now 2018 PL9) on 2018-08-08

 from Siding Spring Observatory, Coonabarabran, NSW, Australia. (MPC Q62) 

a stack of 10 - 60 second luminance BIN2 images 

 taken with iTelescope.net's (T30) 

 By Steven M. Tilley

Over three days the following observatories  submitted observations of A107TVP:

• (711) McDonald Observatory, Fort Davis, Texas,US
• (850) Cordell-Lorenz Observatory, Sewanee, Tennessee, US 
• (E23) Arcadia,NSW, Australia.
• (F51) Pan-STARRS 1, Haleakala, Hawaii, US   
• (J04) ESA Optical Ground Station, Tenerife, Canary Islands, Spain
• (L01) Višnjan Observatory, Tican, Croatia. 
• (P93) Space Tracking and Communications Center, JAXA, Japan.
• (Q62) iTelescope Observatory, Siding Spring,NSW, Australia. 
• (T05) ATLAS-HKO, Haleakala, Hawaii,US.
• (X31) Galileo Galilei Observatory, Oro Verde, Argentina.
• (X74) Observatório Campo dos Amarais, Brazil.

On 2018-08-10 at 15:24 UTC the MPC Issued "MPEC 2018-P46 : 2018 PL9" assigning the provisonal designations "2018 PL9" to the "new" asteroid.

The asteroid 2018 MR8 [NEOCP P10I7IV] on 2018-07-04

The asteroid 2018 MR8[NEOCP P10I7IV](Classification: Aten [NEO])
on 2018-07-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 13-60 second luminance BIN2 images
taken with iTelescope.net's
(T17 TEL 0.43-m f/6.8 reflector + CCD)
By Steven M. Tilley

The asteroid 2018 MR8[NEOCP P10I7IV](Classification: Aten [NEO])
on 2018-07-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 13-60 second luminance BIN2 images
taken with iTelescope.net's
(T17 TEL 0.43-m f/6.8 reflector + CCD)
By Steven M. Tilley

The asteroid 2018 MR8[NEOCP P10I7IV](Classification: Aten [NEO])
on 2018-07-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 13-60 second luminance BIN2 images
taken with iTelescope.net's
(T17 TEL 0.43-m f/6.8 reflector + CCD)
By Steven M. Tilley

The asteroid 2018 MR8[NEOCP P10I7IV](Classification: Aten [NEO])
on 2018-07-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 13-60 second luminance BIN2 images
taken with iTelescope.net's
(T17 TEL 0.43-m f/6.8 reflector + CCD)
By Steven M. Tilley

NASA Jet Propulsion Laboratory (JPL) Orbit Diagram for
The asteroid 2018 MR8(2018-07-04 14:00)
see https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018MR8

Background

(as of 2018-07-04)

•  Object:2018 MR8
• Orbit Type: Aten [NEO]
• Approximate Diameter: 220 m - 500 m( 721.785 feet to 1640.42 feet)(Absolute Magnitude: H= 20.376)
• On the Sentry Risk Table:  No 
• On the NEODyS CLOMON2 risk page: No 
• Discovery observation was made: 2018 06 24.57450
• Discovery observation was made by Pan-STARRS 1, Haleakala. (MPC Code F51) The Discovery M.P.E.C.:MPEC 2018-N11 : 2018 MR8
• Last Observation (publish): 2018 07 04.63335 (at  Arcadia Australia/NSW  (MPC Code E23)
• Data-Arc Span (publish): 10  days
• Number of Optical Observations(published):28
• Observatories Reporting (Published) Observations(MPC Code):
• (E23) Arcadia, Australia/NSW.
• (F51) Pan-STARRS 1, Haleakala, US/Hawaii.
• (H36) Sandlot Observatory, Scranton, US/Kansas.
• (I52) Steward Observatory, Mt. Lemmon Station, US/Arizona.
• (Q62) iTelescope Observatory, Siding Spring, Australia/NSW.
•  Perihelion Distance:0.7978047188215932(AU)
•  Aphelion Distance:1.144399062564495(AU)
• • Next Close-Approach to Earth:  Will safely pass Earth on 2018-Jul-13 :
  • Minimum Distance(Earth center to NEO center)  0.113853780794469 of (AU) ( 44.309 (LD)), or  10,583,370.104 miles ( 17,032,283.177 (KM))
  • Nominal Distance(Earth center to NEO center) of 0.115370764006667 (AU) ( 44.899 (LD)),or  10,724,382.503 miles ( 17,259,220.635 KM))  
  • Maximum Distance(Earth center to NEO center) of 0.116887744396502 (AU) ( 45.489 (LD)), ( Earth radii) or 10,865,394.64  miles (17,486,157.672 (KM))   
  
  
  Useful Links:
  

  • Space Situational Awareness(ESA) -- 2018 MR8
  • Near Earth Objects Dynamic Site--2018 MR8
  • (MPC) Observations --2018 MR8
  • JPL Orbit Diagram --2018 MR8
  • NEO Earth Close Approaches (JPL) (upcoming)
  • JPL's NEO Earth Close-Approaches (Between 1900 A.D. and 2200 A.D- limited to encounters with reasonably low uncertainty)
  • The Tracking News
  • NEO Coordination Centre 
  • Speed of Light - Space - Distance Calculator
  • Asteroid Hazards: The View from Space(MPC)
  • Don’t fear apocalyptic asteroids: you’re safer than you think
  • Understanding Risk Pages By Jon Giorgini
  • Revised asteroid scale aids understanding of impact risk
  • Near Earth, Objects Scale Helps Risk Communication
  • Dealing With the Impact Hazard: An International Project
  • The Palermo Technical Impact Hazard Scale
  • An Asteroid as Entered the Blogosphere… Should I Be Worried? A commentary by Steven M. Tilley
  • International Asteroid Warning Network
  • Impact Risk Assessment: An Introduction - Near-Earth Object Program
  • Hazardous NEO Technical Reviews
  • Frequently Asked Questions For Impact Risk Assessment 
  • How to Find an Impact Orbit for the Earth-Asteroid Collision
  • The Asteroid/Comet Impact Hazard
  • Whom should we call? Data policy for immediate impactors announcements
  • NEO Search & Follow-Up
  • NEOs' Science pages by Livia Giacomini
  • Torino Scale(JPL)
  • Find_Orb --- Orbit determination software - Project Pluto
  • Guide to Minor Body Astrometry(MPC)
  •  Asteroid - Impact Simulator (Impact Earth!) by Purdue University,
  • On-line Find_Orb
  
  
  
   

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