Contents  on 2 August '18

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. To keep track of what's new each day, watch the Chronology section.

Traffic Report  on 2 August '18

No objects reported inside ten LD

No small Solar-System bodies are reported traveling within ten lunar distances (LD) of our home world today, but 2018 OZ arrives inside ten LD tomorrow.

Neighborhood Traffic
Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
6.97 LD Aug. 6 2018 OZ 33 m  10.28 from 11.97 LD tomorrow - Aug. 9 NHATS target
9.36 LD Aug. 27 2018 LQ2 37 m  12.01 from 12.17 LD Aug. 17 - Sept. 6 NHATS target - DOU
4.22 LD Aug. 29 1998 SD9 49 m  65.64 from 68.38 LD Aug. 25 - Sept. 2

This report was generated at 2253 UTC with today's DOU MPEC carrying astrometry from June and early July for approaching 2018 LQ2 and departed objects 68347 2001 KB67 and risk-listed 2018 NL.

Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object temporal distances are derived by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 2 August '18

The MPC's NEO Confirmation Page has 4 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four objects listed. Of these, two were "one nighters."

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 2 August '18

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 2 Aug. '18 >>  MPEC 2018-P03 - "12:03 UT" - Daily Orbit Update

Observers  on 2 August '18

Fourteen observers appear in today's MPEC.

CodeObserver / observatory
Z35Aras de los Olmos Obs. (OAO) in Spain, 10 in MPEC 2018-P03 -- 68950, 68347, 66391, 455550, 15745, 139345, 138847, 13553, 7889, 719
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPEC 2018-P03 -- 2018 NL, 2018 NB, 2018 NA, 2018 MJ7, 2018 MH, 2018 LZ5, 2018 LQ2, 2018 KT, 2017 GT5, 2016 LM11, 2014 UV, 2014 ON344
T08ATLAS Mauna Loa in Hawaii, 10 in MPEC 2018-P03 -- 2018 KE3, 2015 RB82, 2009 SK104, 99799, 89959, 513497, 36183, 17274, 6569, 1916
160Castelmartini Obs. in Italy, 10 in MPEC 2018-P03 -- 2018 MM8, 2011 GA62, 2002 OS4, 68950, 438429, 415029, 398188, 31345, 21277, 11500
J95Great Shefford Obs. in England, 1 in MPEC 2018-P03 -- 2018 OG
Q62}program code "}" (33) via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-P03 -- 2014 JM25
J69North Obs. in England, 1 in MPEC 2018-P03 -- 2018 NN4
Z80Northolt Branch Obs. in England, 2 in MPEC 2018-P03 -- 2018 NU3, 2012 OD1
C23Olmen Obs. in Belgium, 2 in MPEC 2018-P03 -- 2061, 1627
C27Pallerols Obs. in Spain, 1 in MPEC 2018-P03 -- 2018 NN
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPEC 2018-P03 -- 2012 NP, 2004 RX10, 9162
193Sanglok Obs. in Tajikistan, 1 in MPEC 2018-P03 -- 3552
B38Santa Mama Obs. in Italy, 1 in MPEC 2018-P03 -- 138847
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-P03 -- 2010 MQ1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 2 August '18

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.





Notes for Today's Latest Risk Assessments
2018 NLJPL Sentry16372060-210975.032427e-05-4.49-4.500JPL: Computed at 07:10 today Pacific time based on 29 observations spanning 21.060 days (2018-Jul-03.40294 to 2018-Jul-24.46303). Diameter approximately 0.029 km. from weighted mean H=25.31.
NEODyS16372057-2109205.62e-04-3.46-3.470NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2018-07-03.404 to 2018-07-24.464."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology  on 2 August '18

Times are UTC for when items were noted or added by The Tracking News.

2253Generated Traffic Report
1637Noted that JPL Sentry has updated its 2018 NL risk assessment - see above
Noted that NEODyS has updated its 2018 NL risk assessment - see above
Grabbed MPEC 2018-P03 - Daily Orbit Update - see above