Lagniappe Observing: Asteroid

Showing posts with label Asteroid. Show all posts

Aug 21, 2022

Using Find_orb(interactive version) and Guide9 To find the impact location of The NEO 2008 TC3.

Using Find_orb(interactive version) and Guide9 To find the impact location of The NEO 2008 TC3.

Credits

The Observations of 2008 TC3 were obtained from the The Minor Planet Center (MPC)

https://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=2008+TC3

The Observations were examined with Find_Orb Orbit determination software - Project Pluto http://www.projectpluto.com/find_orb.htm

Text editing was done with MS Notepad.

The impact.tdf graphic was done with MS Paint.

The Map was done with Guide9 https://www.projectpluto.com/guide9b.htm

2008TC3-groundpath-rev Wikimedia Commons

https://en.wikipedia.org/wiki/2008_TC3#/media/File:2008TC3-groundpath-rev.png

Music Way Out West by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org https://youtu.be/1jYKETpAu1A

Created using Pinnacle Studio

Steven M. Tilley

http://lagniappeobserving.com

Oct 22, 2020

Map of 316 impacts in Fireballs Reported by US Government Sensors (1988-Apr-15 to 2020-Oct-21; limited to events >= 0.3kt)

Courtesy NASA/JPL-Caltech

Map of 316 impacts in Fireballs Reported by US Government Sensors (1988-Apr-15 to 2020-Oct-21; limited to events >= 0.3kt) https://cneos.jpl.nasa.gov/fireballs/ 2018VP1 is small~2m any fireball from it would be ~ 4.2e-4 Mt = 0.42 KT [note 225 are >= 0.42 KT] https://cneos.jpl.nasa.gov/sentry/details.html#?des=2018%20VP1

https://docs.google.com/spreadsheets/d/1_K6JofpQw7Uz7oXLVbcH8l8rSFiM8zb4/edit#gid=246013977

Aug 7, 2020

I am working on getting a website The Asteroid News up and running

I am working on getting a website the Asteroid News up and running. There is a need for very high quality researches, writers, editors, web editors, coders, databases, etc. info(AT)theasteroidnews(dot)com

Jun 14, 2020

2018 VP1 Information Sheet-- "1 in 240" Odds of a Fireball on 2020-11-02 or ."99.59% chance the asteroid will MISS the Earth"

2018 VP1 Information Sheet-- "1 in 240" Odds of a Fireball on 2020-11-02 or ."99.59% chance the asteroid will MISS the Earth"

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

Throughout the year, very small rocks strick the Earth's atmosphere and creating spectacular fireballs. Most of these rocks travel through space unknown to habitats of Earth until they strick the atmosphere. If we are lucky, the fireball will be seen and reported. If we are really lucky, the fireballs will be capture on film. The most vast majority of fireballs are of no danger what so ever. Most fireballs are like rainbows in that they are cool. Four times in the past, these rocks travel through the field of vision of an asteroid observer before impact. Observation was taken. The rocks were given designations, like 2014 AA( i.e., the first discovery of the first half of January in 2014), and the rocks "became" asteroids. These four asteroids were on the safe side when it comes to size.

In the first half of November 2018, an asteroid was discovered and give the designation 2018 VP1. This asteroid is very small[1.8 m - 3.9 m ( 5.90551 to 12.79528 feet) ]. This asteroid was only observed 21 times over 13 days.

In orbit determination, one calculation what orbit will place the object in the sky where it was seen. If one knows an object's orbit, it knows where it is going and where it will be in the sky. All observations are "imperfect," so there will be many similar orbits. If one were to create virtual asteroids for each of the similar orbits and did a simulation, one would see over time. The virtual asteroids move apart from each other to create an uncertainty region. The real asteroid is somewhere within the uncertainty region. When doing the simulation, if any of the virtual asteroids impact the Earth, they become virtual impactors, and there is 'Non-Zero' probability of the real asteroid hitting the Earth. By calculating the percentage of virtual impactors to virtual asteroids, one can calculate the risk of impact.

There is a very low-risk impact 2018 VP1 will on 2020-11-02. However, it must be restarted this asteroid is very small[1.8 m - 3.9 m ( 5.90551 to 12.79528 feet) ]. We have a fireball this size about two times a year.

Also see Sentry: Earth Impact Monitoring

Find_orb computing Monte Carlo variant orbits for the NEO 2018 VP1. One can use Monte Carlo method to create virtual asteroids. By using orbits of the virtual asteroids one can can see where the "real" asteroid could go. If any of virtual asteroids impact the Earth they become known as virtual impactors and the is 'Non-Zero' probability of the real asteroid hitting the Earth

An program is Solex & Exorb

@kpheider asked me to calculate a path of risk for #2018VP1. It's only a few meters across but JPL's SENTRY has it at 1 chance in 240 of impacting on Nov 2, 2020 (ESA/NEODys has it at 1 in 400). Path of risk stretches across the Pacific. Calculated with SOLEX 12.1 pic.twitter.com/U8SGb8CvOl
— Peter Thomas (@ptastro1) July 26, 2019

Background

(as of 2020-06-13 )

Object: 2018 VP1
Orbit Type: NEO Apollo
Approximate Diameter: 1.8 m - 3.9 m ( 5.90551 to 12.79528 feet) (Absolute Magnitude: H=30.9)
On the Sentry Risk Table: YES

Impact Probability(2020-11-02.05) = 4.1e-3
0.41% chance of Earth impact
1 in 240 odds of impact
99.59% chance the asteroid will miss the Earth

for more information read Understanding Risk Pages by Jon Giorgini
On the NEODyS CLOMON2 risk page: YES

(2020-11-02.051) 5.16e-3
0.516%
1 in 194
99.484% chance the asteroid will miss the Earth

Possible Earth Impact Effects Program of 2018 VP1
Listed on The Near-Earth Object Human Space Flight Accessible Targets Study (NHATS):NO
Listed on the Goldstone Asteroid Radar Schedule:NO
Listed on the Arecibo Asteroid Radar Schedule:NO
Radar Observations:
Discovery observation was made: 2018 11 03.27284202 5 (By Palomar Mountain--ZTF (MPC Code I41)[ First precovery observation was 2018 11 03.27249502]
Last Observation(publish) was made: 2018 11 16.24026503 (By Cerro Paranal (MPC Code 309))
Data-Arc Span (publish): 13 days ( yr)
Number of Optical Observations(published): 21
Oppositions: 1
Number of Observatories Reporting (Published) Observations :5
Observatories Reporting (Published) Observations(MPC Code):

(309) Cerro Paranal, Chile.
(H01) Magdalena Ridge Observatory, Socorro, US/New
(I41) Palomar Mountain--ZTF, US/California.
(L01) Višnjan Observatory, Tičan, Croatia.
(T12) Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m)

Perihelion Distance: 0.9051326626577225 (AU)
Aphelion Distance: 2.270308947523921 (AU)
Earth MOID: 5.54556E-5 (AU), 0.022 (LD), 1.30069951121949 (Earth Radii), (Miles), or 8,296.04 5,154.92 (KM)
Close-Approach to Earth: Will pass the Earth on 2020-Nov-02 11:33 at a Nominal Distance(Best Fit) of 0.00280167254552464 (AU), 1.09 (LD), 65.71 (Earth Radii), 260,431.733 (Miles), or 419,124.247(KM). "IF" the Earth was the Size of a Basketball flyby would be 25.53 feet ( 7.78 meters) away
Close-Approach to Earth Uncertainty:

Distance (Maximum Distance (au) - Minimum Distance (au)): 0.0256085074009903 - 3.90766585857012e-05 = 0.02556943074(AU) 9.951(LD) or 3,825,132.39 KM( 2,376,827.07 Miles)
Time Uncertainty: (minutes) 4750.56847240545 ( 3 Days 7 Hours 11
Minutes)

Object velocity relative to Earth at close-approach [V-relative] (KM/S): 9.71114662839966
Object velocity relative to a massless Earth at close-approach[V-infinity](KM/S):9.61271582257126
Visibility:

Naked Eye Visibility:NO
Peak Magnitude: 17.1
2018 VP1 Ephemerides(Near Earth Objects Dynamic Site - NEODyS - SpaceDyS)

Note: this was edited to add links missing data formatting, typos, replace, the image of Find_orb computing, fixing bad links .

Oct 30, 2019

A list of 9257 Known NEO Earth Close Approaches Less-Than 10LD (Nominal_Dist) as of 2019-10-30

Here is a list of 9,257 Known NEO Earth Close Approaches Less-Than 10LD (Nominal_Dist) as of 2019-10-30.

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 [if the Earth was the size of a Basketball -
Radius 12.0275 CM(4.73523622 inches)]

Data from the SBDB Close-Approach Data API https://ssd-api.jpl.nasa.gov/cad.api?dist-max=25LD&date-min=1900-01-01&date-max=2200-12-31&fullname=true&sort=date

Sep 26, 2018

IF the Earth was the size of a basketball how far away would NEO Earth close approaches be?

IF the Earth was the size of a basketball how far away would NEO Earth close approaches be? Here is a list of The 100 closest observed NEO Earth close approaches as of 2018-09-26.

Sep 10, 2018

More Follow-up Observations of 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. As of 2018-09-10 2018 RQ1 as a data-arc span of 72.77 hr with 44 published observations. 2018 RQ1 is listed on the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.(as of 2018-09-10) In an effort to help with the improvement of the known orbit I booked imaging runs on iTelescope.net's T11 and T24 of 60-30 second luminance BIN2 images each.

I was able to obtain 20 images from T11. I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 3 sets(stacks) of 6 images. Each image was shifted match the movement of 2018 RQ1.

An image of the NEO 2018 RQ1

on 2018-09-10

from Mayhill, New Mexico

[New Mexico Skies](MPC Code H06)

a stack of 6-30 second luminance BIN2 images

taken with iTelescope.net's (T11)

By Steven M. Tilley

An image of the NEO 2018 RQ1
on 2018-09-10
from Mayhill, New Mexico
[New Mexico Skies](MPC Code H06)
a stack of 6-30 second luminance BIN2 images
taken with iTelescope.net's (T11)
By Steven M. Tilley

I was able to obtain 49 images from T24. I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 3 sets(stacks) of 14 images. I had work around the meridian flip.

An image of the NEO 2018 RQ1
on 2018-09-10
from Sierra Remote Observatory, Auberry, California (MPC U69)
a stack of 14-30 second luminance BIN2 images
taken with iTelescope.net's (T24)
By Steven M. Tilley

see
Accessible NEA(Object/Trajectory Details for 2018 RQ1)

Sep 9, 2018

Follow-up Observations of 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. As of 2018-09-09 2018 RQ1 as a data-arc span of 31.5 hr with 22 published observations. 2018 RQ1 is listed on the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.(as of 2018-09-09) In an effort to help with the improvement of the known orbit I had iTelescope.net's(T30) start taking images and was able to obtain 22-30 Second Luminance BIN2. I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 3 sets(stacks) of 7 images. Each image was shifted match the movement of 2018 RQ1.

An image of the NEO 2018 RQ1
on 2018-09-09 from
Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 22-30 second luminance BIN2 images
taken with iTelescope.net's (T30)
by Steven M. Tilley

An image of the NEO 2018 RQ1
on 2018-09-09 from
Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 7-30 second luminance BIN2 images
taken with iTelescope.net's (T30)
by Steven M. Tilley

see
Accessible NEA(Object/Trajectory Details for 2018 RQ1)

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

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 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?

Aug 19, 2018

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

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

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

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.

Aug 6, 2018

The Asteroid 2018 KE3 [NEO(Amor)] on 2018-08-04

The Asteroid 2018 KE3 is an Amor (a Near-Earth asteroids whose orbits approach but does NOT cross Earth's orbit) with an estimated diameter of 400 M to 900 M(1312.34 Foot to 2952.76 Foot) its MOID (Minimum orbit intersection distance) is 0.213016 AU(82.9 Lunar Distance (LD))

On 2018-08-04 I was able to obtain 40-60 Second Luminance BIN2 Images on itelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD).

The Asteroid 2018 KE3 [NEO(Amor)]
on 2018-08-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 40-60 second luminance BIN2
images taken with iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
[tracking on stars]
By Steven M. Tilley

The Asteroid 2018 KE3 [NEO(Amor)]
on 2018-08-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 40-60 second luminance BIN2
images taken with iTelescope.net's
(T17 TEL 0.43-m f/6.8 reflector + CCD)
[tracking on stars]
By Steven M. Tilley

The Asteroid 2018 KE3 [NEO(Amor)]
on 2018-08-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 40-60 second luminance BIN2
images taken with iTelescope.net's
(T17 TEL 0.43-m f/6.8 reflector + CCD)
[tracking on asteroid]
By Steven M. Tilley

Asteroid Orbit diagram
for 2018 KE3 [NEO(Amor)]
courtesy of NASA/JPL-Caltech
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018KE3

I use Astrometrica to do the data reduction by way of the stack and track method. I had Astrometrica stack 4 sets(stacks) of ten images. Each image was shifted match movement of 2018 KE3.

The Asteroid 2018 KE3 [NEO(Amor)]
on 2018-08-04 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 10-60 second luminance BIN2
images taken with iTelescope.net's (T17 TEL 0.43-m f/6.8 reflector + CCD)
[tracking on asteroid]
By Steven M. Tilley

I submitted four observations of 2018 KE3 to the The Minor Planet Center(MPC) in the "new" "Astrometry Data Exchange Standard (ADES)" format [PSV -"Pipe Separated Values"]

On 2018-08-05 the MPC published "MPEC 2018-P10 : DAILY ORBIT UPDATE (2018 AUG. 5 UT)" containing my 2018-08-04 observations. of 2018 KE3.

As more observations are made(over time) of any given asteroid.---more accurate orbital elements can be computed (with lower uncertainties). Here a test with Find_Orb showing "small" improvement to the orbital elements for 2018 KE3 (before and after my 2018-08-04 2018-08-04 observations).

Find_Orb orbital elements for 2018 KE3 before my 2018-08-04 observations.
Perihelion 2018 Aug 16.166920 +/- 0.000226 TT = 4:00:21 (JD 2458346.666920)
Epoch 2018 Mar 23.0 TT = JDT 2458200.5 Earth MOID: 0.2133 Find_Orb

M 323.12920834 +/- 0.0012           (J2000 ecliptic)
n   0.25225127241 +/- 8.32e-6       Peri.    3.43615306 +/- 0.00026
a   2.48073556073 +/- 5.45e-5       Node   321.10306305 +/- 0.00008
e   0.5058787539 +/- 9.59e-6        Incl.   10.22121421 +/- 0.00009
P   3.91                   H 19.2   G 0.15   U 4.9
q 1.22578414642 +/- 3.25e-6    Q 3.73568697504 +/- 0.000106
From 83 observations 2018 May 25-Aug. 3; mean residual 0".26

Find_Orb orbital elements for 2018 KE3 after my 2018-08-04 observations.
   Perihelion 2018 Aug 16.167005 +/- 0.00021 TT = 4:00:29 (JD 2458346.667005)
Epoch 2018 Mar 23.0 TT = JDT 2458200.5   Earth MOID: 0.2133   Find_Orb
M 323.12863383 +/- 0.0011           (J2000 ecliptic)
n   0.25225505676 +/- 7.77e-6       Peri.    3.43628389 +/- 0.00023
a   2.48071074989 +/- 5.09e-5       Node   321.10299979 +/- 0.00007
e   0.5058744699 +/- 8.96e-6        Incl.   10.22118040 +/- 0.00009
P   3.91                   H 19.2   G 0.15   U 4.8
q 1.22578251419 +/- 3.02e-6    Q 3.73563898558 +/- 9.89e-5
From 87 observations 2018 May 25-Aug. 4; mean residual 0".26

If one would to keep their eye JPL Small-Body Databas day afer day they see this
"improvement" of orbital elements and lower uncertainties as well.

Screenshot of JPL's Orbital Elements for 2018 KE3 before my 2018-08-04 observations.
Courtesy of NASA/JPL-Caltech https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018KE3

Screenshot of JPL's Orbital Elements for 2018 KE3 after my 2018-08-04 observations.
Courtesy of NASA/JPL-Caltech https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2018KE3

Apr 23, 2018

Confirmation images of the NEO 2018 HC1

A confirmation image of the NEO 2018 HC1 on
2018-04-21 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62)
a stack of 15 - 05 Second Luminance BIN2
images taken with iTelescope.net's
(T30 TEL 0.50-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley

Apr 6, 2018

The NEO 2018 BY2 - Information Sheet

The NEO 2018 BY2 on 2018-03-31 from Mayhill, New Mexico
(New Mexico Skies) - (MPC Code H06) a stack of 9 - 20 Second Luminance
BIN2 Images taken with iTelescope.net's
(T21 TEL 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer)
By Steven M. Tilley

The NEO 2018 BY2 on 2018-04-02 from Sierra Remote Observatory,
Auberry, California, USA (MPC U69) a stack of 10 - 15 Second Luminance BIN2 Images
taken with iTelescope.net's (T24 TEL 0.61-m f/6.5 reflector + CCD)
By Steven M. Tilley

The NEO 2018 BY2 on 2018-04-05 from Siding Spring Observatory,
Coonabarabran, NSW, Australia. (MPC Q62) a stack of 20 - 15 Second Luminance BIN2
Images taken with iTelescope.net's (T27 TEL 0.70-m f/6.6 reflector + CCD)
By Steven M. Tilley

Background

(as of 2018-04-06)

Object: 2018 BY2
Orbit Type: Apollo [NEO, PHA]
Approximate Diameter: 210 m - 470 m ( 688.976 feet to 1541.995 feet) (Absolute Magnitude: H= 20.5)
On the Sentry Risk Table: NO
On the NEODyS CLOMON2 risk page: NO
First(Precovery) Observation was made: 2018 01 03.45659
Discovery observation was made on: 2018 01 17.31782
Discovery observation was made by Pan-STARRS 1, Haleakala (MPC Code F51) The Discovery M.P.E.C.:MPEC 2018-B85 : 2018 BY2
Last Observation (publish): 2018 04 05.42579 (at iTelescope Observatory, Siding Spring, Australia (MPC Code Q62) )
Data-Arc Span (publish): days 92
Number of Optical Observations(published):146
Observatories Reporting (Published) Observations(MPC Code):

(246) Klet Observatory-KLENOT, Czech Republic.
(474) Mount John Observatory, Lake Tekapo, New Zealand.
(568) Mauna Kea, US/Hawaii.
(587) Sormano, Italy.
(691) Steward Observatory, Kitt Peak - Spacewatch, US/Arizona.
(703) Catalina Sky Survey, US/Arizona.
(711) McDonald Observatory, Fort Davis,US/Texas.
(807) Cerro Tololo Observatory, La Serena, Chile.
(A48) Povegliano Veronese, Italy.
(B74) Santa Maria de Montmagastrell, Spain.
(F51) Pan-STARRS 1, Haleakala,US/Hawaii.
(H01) Magdalena Ridge Observatory, Socorro, US/New Mexico.
(H06) iTelescope Observatory, Mayhill, US/New Mexico.
(H21) Astronomical Research Observatory, Westfield, US/Illinois.
(H36) Sandlot Observatory, Scranton, US/Kansas.
(H45) Arkansas Sky Obs., Petit Jean Mountain South, US/Arkansas.
(I52) Steward Observatory, Mt. Lemmon Station,US/Arizona.
(K61) Rokycany Observatory, Czech Republic.
(L04) ROASTERR-1 Observatory, Cluj-Napoca, Romania.
(Q62) iTelescope Observatory, Siding Spring, Australia/NSW.
(T05) ATLAS-HKO, Haleakala, US/Hawaii.
(U69) iTelescope SRO Observatory, Auberry,
(W89) Cerro Tololo-LCO Aqawan A #1, Chile.

Perihelion Distance 1.014723117954455 (AU)
Aphelion Distance: 2.264719569328387 (AU)
Earth MOID (Earth center to NEO center): 0.04159 AU ((16.186 LD)), ( 975.57 Earth radii) or 3,866,032.024 miles ( 6,221,775.442 ( KM))
Next Close-Approach to Earth: Will safely pass Earth on 2018-Apr-11:

Minimum Distance(Earth center to NEO center) of 0.0609381959952516 (AU) ( 23.715 (LD)), 1429.89 (Earth radii) or 5,664,559.202 miles ( 9,116,224.365(KM))
Nominal Distance(Earth center to NEO center) of 0.0609437887594874 (AU) ( 23.718 (LD)), (1430.02 Earth radii) or 5,665,079.082 miles ( 9,117,061.03 (KM))
Maximum Distance(Earth center to NEO center) of 0.0609493815227982 (AU) ( 23.72 (LD)), (1430.156443 Earth radii) or 5,665,598.962 miles (9,117,897.696 (KM))

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