Contents  on 13 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 13 July '18

Three objects reported inside ten LD

There are three transient natural objects reported inside ten lunar distances (LD) of Earth today. Closest is intruder 2018 NX, outbound from 4.02 to 4.76 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.30 LD July 7 2018 NX 10 m  4.02 to 4.76 LD June 24 - July 21 intruder, NHATS target
1.40 LD July 17 2018 NM 18 m  5.03 from 6.48 LD July 10 - 23 NHATS target - DOU
2.37 LD July 7 2018 NJ 9 m  8.33 to 9.61 LD June 29 - tomorrow NHATS target, risk
Approaching - sorted by 10-LD bubble entry date
9.36 LD Aug. 27 2018 LQ2 39 m  15.21 from 15.37 LD Aug. 17 - Sept. 6 NHATS target
4.22 LD Aug. 29 1998 SD9 49 m  132.91 from 137.32 LD Aug. 25 - Sept. 2

This report was generated at 2006 UTC with follow-up in today's DOU MPEC for inbound 2018 NM and departed objects 2015 DP155 and 441987 2010 NY65.



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 13 July '18

The MPC's NEO Confirmation Page has 82 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 82 objects listed. Of these, 45 were "one nighters." So far The Tracking News has counted a total of 96 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 13 July '18

Minor Planet Electronic Circulars

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


MPEC 2018-N67 - "23:45 UT" - 2018 NV2


MPEC 2018-N66 - "23:38 UT" - 2018 NU2


MPEC 2018-N65 - "23:30 UT" - 2018 NT2


<< DOU on 13 July '18 >>  MPEC 2018-N64 - "12:06 UT" - Daily Orbit Update


MPEC 2018-N63 - "11:53 UT" - 2016 BD15

Observers  on 13 July '18

A total of 27 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPECs 2018-N64 & 2018-N67 -- 2018 NV2, 2018 NV1, 2018 NU1, 2018 NQ, 2018 NF2, 2018 NB
T05ATLAS Haleakala in Hawaii, 16 in MPECs 2018-N64 & 2018-N67 -- 2018 NV2, 2018 NV, 2015 BR514, 2011 GA62, 2009 QJ9, 68950, 66391, 518640, 518635, 441987, 397237, 283729, 138847, 13553, 1866, 719
T08ATLAS Mauna Loa in Hawaii, 18 in MPEC 2018-N64 -- 2018 LF5, 2018 LC3, 2018 KE3, 2017 YE5, 2015 DP155, 2009 SK104, 86324, 67367, 513497, 511523, 408752, 322913, 25916, 17274, 153957, 6569, 5646, 1916
160Castelmartini Obs. in Italy, 6 in MPEC 2018-N64 -- 2018 NV, 2015 BR514, 495829, 455550, 138847, 719
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPECs 2018-N64, 2018-N65 & 2018-N66 -- 2018 NU2, 2018 NT2, 2018 NS1, 2018 NH2, 2018 MO5, 2018 LT3, 2018 LD4, 2018 LD16, 2018 LA16, 2018 GL1, 2018 DE2
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2018-N64 -- 2018 GA5
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPECs 2018-N64, 2018-N66 & 2018-N67 -- 2018 NV2, 2018 NU2, 2018 NS
K73Gravina Obs. in Italy, 1 in MPEC 2018-N64 -- 25916
J95Great Shefford Obs. in England, 1 in MPEC 2018-N67 -- 2018 NV2
A17Guidestar Obs. in Germany, 2 in MPEC 2018-N64 -- 2018 MM8, 2018 LZ5
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 3 in MPEC 2018-N64 -- 2018 NB, 2018 MR8, 2011 GA62
Z43Landehen Obs., 1 in MPEC 2018-N64 -- 2018 NV
474Mt. John Obs. in New Zealand, 12 in MPEC 2018-N64 -- 2018 NJ1, 2018 MK8, 2018 LR6, 2018 LO5, 2018 LM5, 2018 KB4, 2018 FH, 2016 CX264, 2010 MQ1, 2009 HW44, 2002 RR25, 516984
J69North Obs. in England, 1 in MPEC 2018-N64 -- 2018 NV
557Ondrejov Obs. in the Czech Republic, 2 in MPEC 2018-N64 -- 2011 GA62, 66391
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-N64 -- 138847
F51Pan-STARRS 1 (PS1) in Hawaii, 13 in MPECs 2018-N64, 2018-N65 & 2018-N66 -- 2018 NU2, 2018 NT2, 2018 NM, 2018 MW4, 2018 KM2, 2017 QP17, 2014 JM25, 1998 SG2, 67367, 469737, 369452, 364877, 220839
F52Pan-STARRS 2 (PS2) in Hawaii, 7 in MPEC 2018-N64 -- 2018 NS1, 2018 NR1, 87311, 509456, 471956, 301011, 189865
K63Pascoli Obs. in Italy, 1 in MPEC 2018-N67 -- 2018 NV2
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2018-N64 -- 2018 NE2
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2018-N67 -- 2018 NV2
C95SATINO-1 in France, 1 in MPEC 2018-N67 -- 2018 NV2
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2018-N64 -- 2018 NS
A16Tentlingen Obs. in Switzerland, 2 in MPEC 2018-N64 -- 68950, 455550
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2018-N63 & 2018-N64 -- 2018 LL5, 2016 BD15
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2018-N63 -- 2016 BD15
L01Visnjan Obs., 1 in MPEC 2018-N67 -- 2018 NV2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 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
2018 NSNEODyS1536R E M O V E D-

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 13 July '18

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

2358Grabbed MPEC 2018-N65 - 2018 NT2 - see above
Grabbed MPEC 2018-N66 - 2018 NU2 - see above
Grabbed MPEC 2018-N67 - 2018 NV2 - see above
2006Generated Traffic Report
1536Noted that NEODyS has removed 2018 NS as an impact risk - see above
1344Grabbed MPEC 2018-N64 - Daily Orbit Update - see above
1309Grabbed MPEC 2018-N63 - 2016 BD15 - see above