Contents  on 18 July '17

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 efforts, and there may be some gaps in our traffic reporting 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 18 July '17

Report not compiled

(Traffic Report not compiled for this day. Click on right arrow immediately above for tomorrow's report.)

Radar Astrometry  on 18 July '17

Radar observation of 13 objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 0222 UTC when the database was dated 17 July


Data update noted at 2124 UTC when the database was dated 18 July


Data update noted at 2325 UTC when the database was dated 18 July


Data update noted at 2358 UTC when the database was dated 18 July

NEOCP Activity  on 18 July '17

The MPC's NEO Confirmation Page has 17 listings

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

New MPECs  on 18 July '17

Minor Planet Electronic Circulars

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


<< DOU on 18 July '17 >>  MPEC 2017-O14 - "11:59 UT" - Daily Orbit Update


MPEC 2017-O13 - "10:45 UT" - 2016 JJ24


MPEC 2017-O12 - "01:27 UT" - 2014 QX432

Observers  on 18 July '17

A total of 22 observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 13 in radar -- 2017 NH, 2017 MQ7, 2017 ME4, 2017 MC3, 2017 MB3, 2017 LX, 2017 KR27, 2017 KJ27, 2017 HK1, 2017 BM31, 90075, 481532, 190166
H21Astronomical Research Obs. Westfield in Illinois, 19 in MPEC 2017-O14 -- 2017 MZ3, 2017 MW4, 2017 MT8, 2017 MN7, 2017 MM, 2017 MG4, 2017 MG3, 2017 MB1, 2017 KR34, 2017 FD65, 2017 CS, 2017 BS5, 2017 BM31, 2016 YX7, 2002 RP28, 495930, 494713, 276660, 172974
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2017-O14 -- 2017 NM6
T08ATLAS Mauna Loa in Hawaii, 22 in MPECs 2017-O12 & 2017-O14 -- 2017 MB1, 2014 QX432, 2008 MH1, 96631, 68348, 496018, 495331, 494975, 488494, 484517, 438452, 265962, 23183, 20460, 163696, 159467, 6063, 6053, 5143, 3288, 1980, 1917
160Castelmartini Obs. in Italy, 3 in MPEC 2017-O14 -- 2017 NS5, 2017 MB1, 2017 BM31
107Cavezzo Obs. in Italy, 1 in MPEC 2017-O14 -- 190166
151Eschenberg Obs. in Switzerland, 4 in MPEC 2017-O14 -- 2017 NS5, 2017 MB1, 2014 SR339, 1999 XL136
006Fabra Obs. in Spain, 2 in MPEC 2017-O14 -- 190166, 11398
595Farra d'Isonzo Obs. in Italy, 2 in MPEC 2017-O14 -- 2017 NS5, 2017 BS5
157Frasso Sabino Obs. in Italy, 1 in MPEC 2017-O14 -- 2010 MW
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2017-O14 -- 90075
Q625Cristovao Jacques in Brazil via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-O14 -- 2017 NN6
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-O14 -- 2017 MB1
K93LCOGT Sutherland C in South Africa, 1 in MPEC 2017-O14 -- 2017 MD9
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPEC 2017-O14 -- 2017 NW5, 2017 NV5
C47Nonndorf Obs. in Austria, 1 in MPEC 2017-O14 -- 2017 MB1
C23Olmen Obs. in Belgium, 5 in MPEC 2017-O14 -- 2017 NS5, 2017 NH, 2017 MB1, 2017 BM31, 190166
A53Peschiera del Garda Obs. in Italy, 3 in MPEC 2017-O14 -- 2017 MB1, 2017 GQ6, 2017 BS5
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 13 in MPEC 2017-O14 -- 2017 NM6, 2017 KR34, 2017 BS5, 2017 BM31, 2011 ED78, 88254, 68348, 66391, 190166, 138846, 12538, 11398, 6063
L04ROASTERR-1 in Romania, 2 in MPEC 2017-O14 -- 2017 BS5, 2017 BM31
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2017-O12 -- 2014 QX432
J22Tacande Obs. in the Canary Islands, 1 in MPEC 2017-O14 -- 2017 EN
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2017-O13 -- 2016 JJ24
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 18 July '17

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
2017 MZ3JPL Sentry1540R E M O V E DJPL: Risk listing removed at 1500 UTC today.
2017 MB1JPL Sentry15402098-209811.200e-07-3.82-3.820JPL: Computed at 07:54 today Pacific time based on 299 observations spanning 28.730 days (2017-Jun-19.31418 to 2017-Jul-18.04413). Diameter approximately 0.610 km. from weighted mean H=18.72.

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 18 July '17

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

2358Noted Radar Astrometry database update - see above
2325Noted Radar Astrometry database update - see above
2124Noted Radar Astrometry database update - see above
1540Noted that JPL Sentry has updated its 2017 MB1 risk assessment - see above
Noted that JPL Sentry has removed 2017 MZ3 as an impact risk - see above
1315Grabbed MPEC 2017-O13 - 2016 JJ24 - see above
Grabbed MPEC 2017-O14 - Daily Orbit Update - see above
0222Grabbed MPEC 2017-O12 - 2014 QX432 - see above
Noted Radar Astrometry database update - see above