Contents  on 5 July '18

NOTE:  These A/CC news pages will update less often for an extended period. All discoveries and observing credits will be reported, but we may miss some interim impact risk assessments and undercount NEOCP objects, and there may be some days without a traffic report for Earth's Busy Neighborhood.

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 5 July '18

Two objects reported inside ten LD

Two minor planets are reported flying inside ten lunar distances (LD) of Earth today. Closest is 2018 MB7, which moves away from 3.23 to 5.08 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 5.0 & 10.0 LD boundaries
2.78 LD yesterday 2018 MB7 60 m  3.23 to 5.08 LD June 30 - July 8 DOU
6.01 LD June 29 2018 LR3 19 m  7.53 to 8.09 LD June 20 - July 8 NHATS target, risk
Approaching - sorted by 10-LD bubble entry date
9.36 LD Aug. 27 2018 LQ2 39 m  16.41 from 16.55 LD Aug. 17 - Sept. 6 NHATS target - DOU
4.22 LD Aug. 29 1998 SD9 49 m  172.75 from 178.57 LD Aug. 25 - Sept. 2

This report was generated at 1810 UTC with follow-up in today's DOU MPEC for approaching 2018 LQ2, outbound 2018 MB7, and departed objects 2018 MG7, 441987 2010 NY65, and 68347 2001 KB67.



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 5 July '18

The MPC's NEO Confirmation Page has 10 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had ten objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of seventeen listings on the NEOCP today.

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 5 July '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 5 July '18 >>  MPEC 2018-N16 - "12:04 UT" - Daily Orbit Update

Observers  on 5 July '18

A total of 26 observers appear in today's MPEC.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2018-N16 -- 2018 NB
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPEC 2018-N16 -- 2018 MM8, 2018 LG1, 2018 LE4, 2006 FE, 363163
T05ATLAS Haleakala in Hawaii, 21 in MPEC 2018-N16 -- 2018 NA, 2018 LF5, 2015 BR514, 2011 GA62, 85989, 68950, 66391, 455550, 441987, 220839, 212359, 17181, 164201, 159699, 15745, 152931, 144332, 13553, 3752, 2061, 1866
T08ATLAS Mauna Loa in Hawaii, 1 in MPEC 2018-N16 -- 2061
160Castelmartini Obs. in Italy, 12 in MPEC 2018-N16 -- 2018 NB, 2018 NA, 2018 LF5, 68950, 65996, 455550, 415029, 283729, 162168, 138847, 13553, 2061
703Catalina Sky Survey (CSS) in Arizona, 7 in MPEC 2018-N16 -- 2018 MR8, 2018 LF5, 2018 KV, 2004 LH, 68347, 518635, 495615
006Fabra Obs. in Spain, 1 in MPEC 2018-N16 -- 25916
J95Great Shefford Obs. in England, 1 in MPEC 2018-N16 -- 2018 MB7
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-N16 -- 2018 MW6
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2018-N16 -- 4954
568`Enrique Solano in Spain on Mauna Kea in Hawaii, 7 in MPEC 2018-N16 -- 2009 ST19, 96189, 42286, 329395, 283729, 222165, 1865
G96Mt. Lemmon Survey (MLS) in Arizona, 6 in MPEC 2018-N16 -- 2018 LQ2, 68950, 516457, 474574, 138847, 4257
0895N.V. Maigurova via Nikolaev Obs. in Ukraine, 3 in MPEC 2018-N16 -- 2018 MB7, 2017 YE5, 441987
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2018-N16 -- 1627
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-N16 -- 441987
F51Pan-STARRS 1 (PS1) in Hawaii, 6 in MPEC 2018-N16 -- 2015 MQ101, 289315, 164217, 163760, 138359, 3752
F52Pan-STARRS 2 (PS2) in Hawaii, 3 in MPEC 2018-N16 -- 67367, 505178, 25916
K63Pascoli Obs. in Italy, 1 in MPEC 2018-N16 -- 2018 NA
W71Rand II Obs. in New York, 1 in MPEC 2018-N16 -- 441987
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2018-N16 -- 2018 NA
0948program code 8 via Simeis Obs. in Ukraine, 3 in MPEC 2018-N16 -- 2017 YE5, 66391, 7889
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2018-N16 -- 86067
291Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2018-N16 -- 2018 NA, 2018 MH, 2018 LY5, 2018 LX15, 2018 LQ6, 2018 LQ2, 2018 LC16
I52Steward Obs. Mt. Lemmon Station in Arizona, 32 in MPEC 2018-N16 -- 2018 NB, 2018 NA, 2018 MY6, 2018 MW6, 2018 MU6, 2018 MS6, 2018 MR5, 2018 MQ5, 2018 MK8, 2018 MJ7, 2018 MG7, 2018 ME5, 2018 MD7, 2018 LZ5, 2018 LU15, 2018 LR6, 2018 LR15, 2018 LQ2, 2018 LN, 2018 LL2, 2018 LH5, 2018 LG, 2018 LF5, 2018 LC16, 2018 KV, 2018 KF3, 2018 JS1, 2018 JP1, 2018 JE5, 2018 DJ4, 2017 YE5, 2017 WH14
Z52The Studios Obs., 1 in MPEC 2018-N16 -- 13553
C51WISE in Earth polar orbit, 2 in MPEC 2018-N16 -- 2010 DJ77, 2010 CA55
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 5 July '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.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2010 CA55JPL Sentry14302021-203432.1825e-08-4.86-4.930JPL: Computed at 06:55 today Pacific time based on 38 observations spanning 4.1684 days (2010-Feb-04.71842 to 2010-Feb-08.88683). Diameter approximately 0.140 km. from weighted mean H=21.99.

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 5 July '18

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

1810Generated Traffic Report
1430Noted that JPL Sentry has updated its 2010 CA55 risk assessment - see above
1330Grabbed MPEC 2018-N16 - Daily Orbit Update - see above