Back of the Envelope Calculation Using the JPL's Fireball Data --- 2018 VP1

 I did a back of the envelope calculation using the JPL's fireball data to estimated that asteroids equal to or greater than 2018 VP1 impact the Earth at a rate of one every 37 to 53 days. IMHO we are at greater risk from the "background." https://docs.google.com/spreadsheets/d/12i7lhXgL0u6m36eoenKDKV-dLtkoedz0/edit?f#gid=1305411600 asteroid https://cneos.jpl.nasa.gov/fireballs/ https://cneos.jpl.nasa.gov/sentry/details.html#?des=2018%20VP1

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

The Asteroid 2020 NK1 Has Been Removed From Sentry: Earth Impact Monitoring

What is Up With Asteroid 2018 SV13

Here a write up "What is Up With Asteroid 2018 SV13" Is asteroid 2018 SV13 real? NO

The NEO 2020 NK1 On 2020-07-21 From Siding Spring Observatory Australia.

The NEO 2020 NK1 Has Been Rated Torino Impact Hazard Scale 1 this happens a few times a year. The current The NEO 2020 NK1 Has Been Rated Torino Impact Hazard Scale 1 this happens a few times a year. The current Torino Scale state for 1 " A routine discovery in which a pass near Earth is predicted, that poses no unusual level of danger. Current calculations show the chance of collision is extremely unlikely with no cause for public attention or public concern. New telescopic observations very likely will lead to reassignment to Level 0."  I in order to help lower uncertainty I did an imaging run with itelescope.net's T30 in itelescope.net

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The NEO 2020 NK1 on 2020-07-21 from Siding Spring Observatory Australia - MPC Q62 using  T30 (0.50-m f/6.8 reflector + CCD) a stack of 15 - 20 second luminance BIN2 images . By Steven M. Tilley

The NEO 2020 NK1 on 2020-07-21from Siding Spring Observatory Australia - MPC Q62 using T30 (0.50-m f/6.8 reflector + CCD) a stack of 15 - 20 second luminance BIN2 images . By Steven M. Tilley

The NEO 2020 NK1 on 2020-07-21 from Siding Spring Observatory Australia - MPC Q62 using T30 (0.50-m f/6.8 reflector + CCD) a stack of 15 - 20 second luminance BIN2 images . By Steven M. Tilley

Perihelion 2020 Sep 21.088437 +/- 0.0701 TT =  2:07:21 (JD 2459113.588437)
Epoch 2020 Jul 21.0 TT = JDT 2459051.5   Earth MOID: 0.0027   Ve: 0.0539
M 322.85838324 +/- 0.24            (J2000 ecliptic)          Find_Orb
n   0.59820505 +/- 0.00329          Peri.  107.84849 +/- 0.10
a   1.39498433 +/- 0.00511          Node   311.10569 +/- 0.006
e   0.6474844 +/- 0.0012              Incl.   45.46161 +/- 0.08
P   1.65/601.79d           H 19.0   G  0.15   U  8.9 
q 0.49175368 +/- 0.000137    Q 2.29821498 +/- 0.0103
From 41 observations 2020 July 13-21; mean residual 0".18

Background

(as of 2020-07-21 ) 

(Check links for Updates)

• Object: 2020 NK1
• Orbit Type: Apollo [NEO, PHA]
• Approximate Diameter: 420 m - 940 m (1377.95 to 3083.99 Feet)  (Absolute H= 19.0 )
• On the Sentry Risk Table:  YES [8 Number of Potential Impacts  2090-2101]
• for more information read Understanding Risk Pages by Jon Giorgini 
• On the NEODyS CLOMON2 risk page: YES[22 Number of Potential Impacts  2086-2102] 
• 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:YES(Priority Level High)
• Radar Observations: none (yet)
• Discovery observation was made:2020 07 13.567919 by ATLAS-MLO, Mauna Loa(MPC Code T08)
• Last Observation(publish) was made:2020 07 21.18925000
  ESA Optical Ground Station, Tenerife (MPC Code J04)
• Number of Optical Observations(published): 38
• Oppositions: 1 
• Number of Observatories Reporting (Published) Observations :8
• Observatories Reporting (Published) Observations(MPC Code):

• (474) Mount John Observatory, Lake Tekapo, New Zealand.
• (E10) Siding Spring-Faulkes Telescope South, Australia/NSW.
• (J04) ESA Optical Ground Station, Tenerife , Canary   Islands (Spain).
• (Q59) Siding Spring-LCO Clamshell {#}2  Australia/NSW.
• (T05) ATLAS-HKO, Haleakala, US/Hawaii.  Observer
• (T08) ATLAS-MLO, Mauna Loa,US/Hawaii.  Observers
• (W88) Slooh.com Chile Observatory, La Dehesa,Chile.
• (Z84) Calar Alto-Schmidt, Spain. 

• Perihelion Distance: 0.49 AU
• Aphelion Distance: 2.28 AU
• Earth MOID: 0.00275208 AU (1.071 Lunar Distance) 64.55 Earth radii
• Close-Approach to Earth:  2020-Jul-31 Minimum Distance  0.0544283775663102(AU) 21.182 Lunar Distance (LD)

Also see:

• JPL Small-Body Database Browser (2020 NK1)
• Sentry: Earth Impact Monitoring 2020 NK1 -- Earth Impact Risk Summary   
• NEODyS-2 2020NK1 
• Understanding Risk Pages by Jon Giorgini 
• Arecibo Asteroid Radar Schedule
•  MPC  Observations Database 2020 NK1 
• Torino Scale  
• Sentry: Earth Impact Monitoring Introduction 
• Palermo Technical Impact Hazard Scale 
• The Tracking News - Earth's Busy Neighborhood , 2020-07-21,  2020-07-20, 2020-07-19, 2020-07-18  , Consolidated Risk Tables
• Quantifying the risk posed by potential Earth impacts Steven R. Chesley (JPL), Paul W. Chodas (JPL), Andrea Milani (Univ. Pisa), Giovanni B. Valsecchi  Icarus 159, 423-432 (2002) (PDF)

 

The NEO 2020 NK1 Has Been Rated Torino Impact Hazard Scale 1 -- Normal (Green Zone)

The NEO 2020 NK1 Has Been Rated Torino Impact Hazard Scale 1 this happens a few times a year. The current Torino Scale state for 1 " A routine discovery in which a pass near Earth is predicted, that poses no unusual level of danger. Current calculations show the chance of collision is extremely unlikely with no cause for public attention or public concern. New telescopic observations very likely will lead to reassignment to Level 0."  2020 NK1 just need more observations.

Artist's concept of a near-Earth object. Image: Courtesy NASA/JPL-Caltech

Perihelion 2020 Sep 21.139924 +/- 0.224 TT =  3:21:29 (JD 2459113.639924)
Epoch 2020 Jul 17.0 TT = JDT 2459047.5   Earth MOID: 0.0027   Ve: 0.0545
M 320.28294890 +/- 0.8              (J2000 ecliptic)          Find_Orb
n   0.60050040 +/- 0.0106           Peri.  107.92176 +/- 0.35
a   1.39142727 +/- 0.0164           Node   311.10237 +/- 0.024
e   0.6466292 +/- 0.00384           Incl.   45.40097 +/- 0.25
P   1.64/599.49d           H 19.0   G  0.15   U  9.7
q 0.49168968 +/- 0.000482    Q 2.29116486 +/- 0.0332
From 29 observations 2020 July 13-19; mean residual 0".18

Background

(as of 2020-07-20 ) 

(Check links for Updates)

• Object: 2020 NK1
• Orbit Type: Apollo [NEO, PHA]
• Approximate Diameter: 420 m - 940 m (1377.95 to 3083.99 Feet)  (Absolute H= 19.0 )
• On the Sentry Risk Table:  YES [26 Number of Potential Impacts  2084-2106]
• for more information read Understanding Risk Pages by Jon Giorgini 
• On the NEODyS CLOMON2 risk page: YES[46 Number of Potential Impacts  2080-2103] 
• 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:YES(Priority Level High)
• Radar Observations: none (yet)
• Discovery observation was made:2020 07 13.567919 by ATLAS-MLO, Mauna Loa(MPC Code T08)
• Last Observation(publish) was made:2020 07 19.607192 by ATLAS-HKO, Haleakala(MPC Code T05)
• Number of Optical Observations(published): 29
• Oppositions: 1 
• Number of Observatories Reporting (Published) Observations :6
• Observatories Reporting (Published) Observations(MPC Code):

• (474) Mount John Observatory, Lake Tekapo, New Zealand.
• (E10) Siding Spring-Faulkes Telescope South, Australia/NSW.
• (T05) ATLAS-HKO, Haleakala, US/Hawaii.  Observer
• (T08) ATLAS-MLO, Mauna Loa,US/Hawaii.  Observers
• (W88) Slooh.com Chile Observatory, La Dehesa,Chile.
• (Z84) Calar Alto-Schmidt, Spain. 

• Perihelion Distance: 0.49 AU
• Aphelion Distance: 2.28 AU
• Earth MOID: 0.00278361 AU (1.083 Lunar Distance) 65.29 Earth radii
• Close-Approach to Earth:  2020-Jul-31 Minimum Distance  0.052769696480622 (AU) 20.536 Lunar Distance (LD)

Also see:

• JPL Small-Body Database Browser (2020 NK1)
• Sentry: Earth Impact Monitoring 2020 NK1 -- Earth Impact Risk Summary   
• NEODyS-2 2020NK1 
• Understanding Risk Pages by Jon Giorgini 
• Arecibo Asteroid Radar Schedule
•  MPC  Observations Database 2020 NK1 
• Torino Scale  
• Sentry: Earth Impact Monitoring Introduction 
• Palermo Technical Impact Hazard Scale 
• Quantifying the risk posed by potential Earth impacts Steven R. Chesley (JPL), Paul W. Chodas (JPL), Andrea Milani (Univ. Pisa), Giovanni B. Valsecchi  Icarus 159, 423-432 (2002) (PDF)

 

2018 SV13... "the object is not real"

There has been some media hub ba over 2018 SV13 Update on 2020 July 17 at 14:31 UT the Minor Planet Center Issued "MPEC 2020-O10 : RETRACTION OF 2018 SV13" .. 2018 SV13 " … the object is not real..." see https://minorplanetcenter.net/mpec/K20/K20O10.html

 Image edited by Steven M. Tilley  see the original (public domain) image Planetoid crashing into primordial Earth  at  Donald Davis' official site

How to see Comet NEOWISE

How to see Comet NEOWISE