Contents  on 14 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 14 July '18

Three objects reported inside ten LD

Three minor objects are known to be within ten lunar distances (LD) of our planet today. Nearest is inbound 2018 NM, which moves in from 5.03 to 3.62 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  4.76 to 5.50 LD June 24 - July 21 intruder, NHATS target - DOU
1.40 LD July 17 2018 NM 18 m  3.62 from 5.03 LD July 10 - 23 NHATS target - DOU
2.37 LD July 7 2018 NJ 9 m  9.61 to 10.91 LD June 29 - today NHATS target, exits ten LD, risk - DOU
Approaching - sorted by 10-LD bubble entry date
9.36 LD Aug. 27 2018 LQ2 37 m  15.06 from 15.21 LD Aug. 17 - Sept. 6 NHATS target - DOU
4.22 LD Aug. 29 1998 SD9 49 m  128.64 from 132.91 LD Aug. 25 - Sept. 2

This report was generated at 2200 UTC with follow-up in today's DOU MPEC for approaching 2018 LQ2, inbound 2018 NM, outbound intruder 2018 NX and risk-listed 2018 NJ, and departed objects 1999 FN19, 441987 2010 NY65, Moon-buzzing 2018 NH, 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 14 July '18

The MPC's NEO Confirmation Page has 65 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 65 objects listed. Of these, 33 were "one nighters." So far The Tracking News has counted a total of 92 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 14 July '18

Minor Planet Electronic Circulars

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


MPEC 2018-N79 - "16:30 UT" - 2018 NU3


MPEC 2018-N78 - "16:18 UT" - 2018 NS3


MPEC 2018-N77 - "16:06 UT" - 2018 NN3


MPEC 2018-N76 - "15:42 UT" - 2018 NM3


MPEC 2018-N75 - "15:21 UT" - 2018 NL3


MPEC 2018-N74 - "14:51 UT" - 2018 NV3


MPEC 2018-N73 - "14:46 UT" - 2018 NT3


MPEC 2018-N72 - "14:36 UT" - 2018 NR3


MPEC 2018-N71 - "14:30 UT" - 2018 NQ3


MPEC 2018-N70 - "14:23 UT" - 2018 NP3


MPEC 2018-N69 - "14:15 UT" - 2018 NO3


<< DOU on 14 July '18 >>  MPEC 2018-N68 - "12:05 UT" - Daily Orbit Update

Observers  on 14 July '18

A total of 31 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2018-N73 -- 2018 NT3
H21Astronomical Research Obs. Westfield in Illinois, 8 in MPECs 2018-N68, 2018-N74 & 2018-N75 -- 2018 NV3, 2018 NL3, 2018 NH, 2018 NB, 2018 MS6, 2018 LQ2, 2018 LH5, 2014 ON344
T08ATLAS Mauna Loa in Hawaii, 4 in MPECs 2018-N68 & 2018-N73 -- 2018 NT3, 2018 NB, 2018 MR8, 441987
U63Burnt Tree Hill Obs., 1 in MPEC 2018-N79 -- 2018 NU3
160Castelmartini Obs. in Italy, 16 in MPEC 2018-N68 -- 2018 MR8, 2014 NE3, 2011 GA62, 2009 OG, 86039, 68950, 65996, 518463, 415029, 398188, 31345, 283729, 16960, 162168, 14402, 13553
807Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPECs 2018-N75 & 2018-N77 -- 2018 NN3, 2018 NL3
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 12 in MPECs 2018-N68, 2018-N69, 2018-N70, 2018-N71, 2018-N72, 2018-N73, 2018-N74, 2018-N76, 2018-N77 & 2018-N78 -- 2018 NW1, 2018 NV3, 2018 NT3, 2018 NT2, 2018 NS3, 2018 NR3, 2018 NQ3, 2018 NP3, 2018 NO3, 2018 NN3, 2018 NM3, 2018 NF2
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2018-N79 -- 2018 NU3
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2018-N68 -- 2018 NV2
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPECs 2018-N69 & 2018-N73 -- 2018 NT3, 2018 NO3
734Farpoint Obs. in Kansas, 1 in MPEC 2018-N69 -- 2018 NO3
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2018-N79 -- 2018 NU3
157Frasso Sabino Obs. in Italy, 1 in MPEC 2018-N68 -- 2018 MR8
J95Great Shefford Obs. in England, 2 in MPECs 2018-N73 & 2018-N74 -- 2018 NV3, 2018 NT3
A17Guidestar Obs. in Germany, 1 in MPEC 2018-N68 -- 2018 MH
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2018-N79 -- 2018 NU3
Z43Landehen Obs., 3 in MPEC 2018-N68 -- 2018 NV, 283729, 138847
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2018-N68 -- 89959
474Mt. John Obs. in New Zealand, 3 in MPECs 2018-N72, 2018-N75 & 2018-N77 -- 2018 NR3, 2018 NN3, 2018 NL3
C47Nonndorf Obs. in Austria, 1 in MPEC 2018-N68 -- 2018 MR8
Z80Northolt Branch Obs. in England, 4 in MPEC 2018-N68 -- 2018 NX, 2018 NV, 2018 MR8, 2018 MM8
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-N68 -- 385268
F51Pan-STARRS 1 (PS1) in Hawaii, 25 in MPECs 2018-N68, 2018-N69, 2018-N70, 2018-N71, 2018-N72, 2018-N74, 2018-N75, 2018-N76, 2018-N77, 2018-N78 & 2018-N79 -- 2018 NV3, 2018 NU3, 2018 NS3, 2018 NR3, 2018 NQ3, 2018 NP3, 2018 NO3, 2018 NN3, 2018 NN1, 2018 NM3, 2018 NL3, 2018 NJ2, 2018 NG1, 2018 MU6, 2018 ME5, 2018 LQ2, 2017 YE5, 2015 RJ83, 2015 AM45, 2012 LT7, 1999 FN19, 87311, 455550, 338172, 2061
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2018-N68 & 2018-N74 -- 2018 NV3, 2018 NB, 2018 ME5, 506859
K63Pascoli Obs. in Italy, 1 in MPEC 2018-N79 -- 2018 NU3
D29Purple Mtn. Obs. Xuyi Station in China, 21 in MPEC 2018-N68 -- 2018 BL3, 2015 FP118, 2014 NE3, 2002 PH80, 1999 VQ11, 87311, 68950, 67367, 66251, 54789, 503960, 474574, 414960, 217796, 17181, 159495, 138847, 13553, 6569, 4257, 887
C95SATINO-1 in France, 1 in MPEC 2018-N79 -- 2018 NU3
204Schiaparelli Obs. in Italy, 1 in MPEC 2018-N79 -- 2018 NU3
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-N68 -- 2015 OH
A16Tentlingen Obs. in Switzerland, 2 in MPEC 2018-N68 -- 2015 BR514, 139345
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 7 in MPECs 2018-N68 & 2018-N72 -- 2018 NS, 2018 NR3, 2018 NM, 2018 NL, 2018 NJ, 2018 LS15, 2018 LG5
L01Visnjan Obs., 1 in MPEC 2018-N79 -- 2018 NU3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 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 NLJPL Sentry15392060-210994.765918e-05-4.47-4.510JPL: Computed at 07:49 today Pacific time based on 21 observations spanning 9.1953 days (2018-Jul-03.40294 to 2018-Jul-12.59828). Diameter approximately 0.031 km. from weighted mean H=25.21.
2018 NJJPL Sentry15392083-2117220.00133819948-4.51-4.510JPL: Computed at 07:43 today Pacific time based on 31 observations spanning 8.3393 days (2018-Jul-05.27485 to 2018-Jul-13.61417). Diameter approximately 0.009 km. from weighted mean H=27.79.

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 14 July '18

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

2200Generated Traffic Report
1823Grabbed MPEC 2018-N76 - 2018 NM3 - see above
Grabbed MPEC 2018-N77 - 2018 NN3 - see above
Grabbed MPEC 2018-N78 - 2018 NS3 - see above
Grabbed MPEC 2018-N79 - 2018 NU3 - see above
1539Noted that JPL Sentry has updated its 2018 NJ risk assessment - see above
Noted that JPL Sentry has updated its 2018 NL risk assessment - see above
Grabbed MPEC 2018-N69 - 2018 NO3 - see above
Grabbed MPEC 2018-N70 - 2018 NP3 - see above
Grabbed MPEC 2018-N71 - 2018 NQ3 - see above
Grabbed MPEC 2018-N72 - 2018 NR3 - see above
Grabbed MPEC 2018-N73 - 2018 NT3 - see above
Grabbed MPEC 2018-N74 - 2018 NV3 - see above
Grabbed MPEC 2018-N75 - 2018 NL3 - see above
1336Grabbed MPEC 2018-N68 - Daily Orbit Update - see above