Contents  on 11 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 11 August '18

Two objects reported inside ten LD

Two minor planets are known to be inside ten lunar distances (LD) of our home world today. Nearest is newly announced 2018 PM10, which is outbound from 3.29 to 4.06 LD

Neighborhood Traffic - sorted by Earth passage distance, grouped by 2.41 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
1.36 LD Aug. 6 2018 PR7 7 m  4.89 to 5.81 LD July 26 - Aug. 16 NHATS target, risk - DOU
3.21 LD yesterday 2018 PM10 14 m  3.29 to 4.06 LD Aug. 5 - 15 NEW - MPEC
Approaching Traffic - sorted by 10-LD bubble entry date
9.36 LD Aug. 27 2018 LQ2 37 m  10.64 from 10.78 LD Aug. 17 - Sept. 6 NHATS target - DOU
4.22 LD Aug. 29 1998 SD9 49 m  42.32 from 44.82 LD Aug. 25 - Sept. 2

This report was updated at 2310 UTC with the discovery of outbound 2018 PM10 (MPEC). Your first local flying rocks traffic report was generated at 1726 UTC with follow-up in today's DOU MPEC for approaching 2018 LQ2, outbound 2018 PR7, and departed objects 2018 PY7 and risk-listed 2018 NL. We also noted the recovery of distant 2007 DG8 (MPEC), announced two days ago, and radar data posted late yesterday for 2018 EJ4.



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. "Distant" is used here to describe an object that has approached Earth within ten LD since A/CC began these traffic reports eleven years ago but is not currently coming so close. 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 11 August '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, 53 were "one nighters." So far The Tracking News has counted a total of 111 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 11 August '18

Minor Planet Electronic Circulars

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


MPEC 2018-P67 - "22:46 UT" - 2018 PV10


MPEC 2018-P66 - "22:43 UT" - 2018 PU10


MPEC 2018-P65 - "22:39 UT" - 2018 PT10


MPEC 2018-P64 - "22:35 UT" - 2018 PS10


MPEC 2018-P63 - "22:31 UT" - 2018 PR10


MPEC 2018-P62 - "22:17 UT" - 2018 PQ10


MPEC 2018-P61 - "22:13 UT" - 2018 PP10


MPEC 2018-P60 - "22:09 UT" - 2018 PO10


MPEC 2018-P59 - "22:05 UT" - 2018 PN10


MPEC 2018-P58 - "21:09 UT" - 2018 PM10


MPEC 2018-P57 - "21:06 UT" - 2018 PK10


MPEC 2018-P56 - "20:58 UT" - 2018 PL10


MPEC 2018-P55 - "20:53 UT" - 2018 PJ10


<< DOU on 11 Aug. '18 >>  MPEC 2018-P54 - "12:03 UT" - Daily Orbit Update


MPEC 2018-P53 - "11:38 UT" - 2017 QY34

Observers  on 11 August '18

A total of 35 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2018-P54, 2018-P64 & 2018-P65 -- 2018 PT10, 2018 PS10, 2018 PR7, 2018 NY14, 2018 NU3, 2018 NO1, 2018 LQ2
T05ATLAS Haleakala in Hawaii, 4 in MPECs 2018-P54 & 2018-P56 -- 2018 PL10, 86878, 65996, 54401
T08ATLAS Mauna Loa in Hawaii, 17 in MPECs 2018-P54 & 2018-P56 -- 2018 PL8, 2018 PL10, 2018 NU3, 2018 KE3, 2009 SK104, 87311, 86324, 438429, 31345, 21277, 18882, 18109, 17274, 162168, 140039, 6456, 4183
160Castelmartini Obs. in Italy, 13 in MPECs 2018-P54 & 2018-P58 -- 2018 PM10, 2018 MM8, 2002 OS4, 87311, 68950, 438429, 283729, 18882, 180186, 162168, 138847, 13553, 11500
K51Celado Obs. in Italy, 2 in MPECs 2018-P58 & 2018-P67 -- 2018 PV10, 2018 PM10
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2018-P56, 2018-P57 & 2018-P62 -- 2018 PQ10, 2018 PL10, 2018 PK10
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2018-P58 -- 2018 PM10
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 5 in MPECs 2018-P55, 2018-P56, 2018-P60, 2018-P63 & 2018-P66 -- 2018 PU10, 2018 PR10, 2018 PO10, 2018 PL10, 2018 PJ10
734Farpoint Obs. in Kansas, 3 in MPECs 2018-P64, 2018-P65 & 2018-P67 -- 2018 PV10, 2018 PT10, 2018 PS10
E94Gisborne Obs. in New Zealand, 1 in MPEC 2018-P54 -- 2018 PL9
J77Golden Hill Obs. in England, 1 in MPEC 2018-P58 -- 2018 PM10
K73Gravina Obs. in Italy, 1 in MPEC 2018-P54 -- 17274
J95Great Shefford Obs. in England, 1 in MPEC 2018-P58 -- 2018 PM10
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-P58 -- 2018 PM10
Q66JAXA Janess-G in New South Wales, 1 in MPEC 2018-P58 -- 2018 PM10
P93JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2018-P58 -- 2018 PM10
W19Kalamazoo Obs. in Michigan, 2 in MPEC 2018-P54 -- 13553, 719
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2018-P55 & 2018-P59 -- 2018 PN10, 2018 PJ10
474Mt. John Obs. in New Zealand, 13 in MPECs 2018-P54, 2018-P55, 2018-P56, 2018-P57, 2018-P60, 2018-P61 & 2018-P63 -- 2018 PR7, 2018 PR10, 2018 PP10, 2018 PO10, 2018 PL10, 2018 PK10, 2018 PJ10, 2018 MV4, 2018 MO5, 2018 LF5, 2018 DX3, 2013 RV9, 1998 YF10
J69North Obs. in England, 1 in MPEC 2018-P58 -- 2018 PM10
Z80Northolt Branch Obs. in England, 2 in MPECs 2018-P54 & 2018-P58 -- 2018 PM10, 433
C23Olmen Obs. in Belgium, 3 in MPEC 2018-P54 -- 2018 NB, 2061, 1627
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-P54 -- 438429
F51Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2018-P55, 2018-P57, 2018-P59, 2018-P60, 2018-P61, 2018-P62, 2018-P63, 2018-P64, 2018-P65, 2018-P66 & 2018-P67 -- 2018 PV10, 2018 PU10, 2018 PT10, 2018 PS10, 2018 PR10, 2018 PQ10, 2018 PP10, 2018 PO10, 2018 PN10, 2018 PK10, 2018 PJ10
K63Pascoli Obs. in Italy, 2 in MPECs 2018-P58 & 2018-P67 -- 2018 PV10, 2018 PM10
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 2 in MPECs 2018-P54 & 2018-P67 -- 2018 PV10, 2018 PJ9
L04ROASTERR-1 in Romania, 1 in MPEC 2018-P58 -- 2018 PM10
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2018-P58 -- 2018 PM10
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2018-P58 & 2018-P67 -- 2018 PV10, 2018 PM10
C95SATINO-1 in France, 1 in MPEC 2018-P54 -- 1627
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2018-P59, 2018-P60, 2018-P62 & 2018-P65 -- 2018 PT10, 2018 PQ10, 2018 PO10, 2018 PN10
Z52The Studios Obs., 1 in MPEC 2018-P54 -- 13553
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 5 in MPECs 2018-P53 & 2018-P54 -- 2018 PY7, 2018 PR7, 2018 NL, 2018 FV3, 2017 QY34
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2018-P53 -- 2017 QY34
L01Visnjan Obs., 3 in MPECs 2018-P58, 2018-P66 & 2018-P67 -- 2018 PV10, 2018 PU10, 2018 PM10
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 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.
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 PY7NEODyS17092097-2118353.76e-05-5.59-6.06-NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2018-08-05.562 to 2018-08-10.526."
JPL Sentry15032097-2115161.853804e-05-5.87-6.290JPL: Computed at 07:41 today Pacific time based on 25 observations spanning 4.9642 days (2018-Aug-05.56103 to 2018-Aug-10.525213). Diameter approximately 0.015 km. from weighted mean H=26.72.
2018 PR7NEODyS1709209711.44e-08-9.97-9.970NEODyS: "Based on 50 optical observations (of which 0 are rejected as outliers) from 2018-08-06.267 to 2018-08-10.520."
JPL Sentry15032097-209717.789e-07-8.22-8.220JPL: Computed at 07:43 today Pacific time based on 50 observations spanning 4.2535 days (2018-Aug-06.26605 to 2018-Aug-10.519536). Diameter approximately 0.007 km. from weighted mean H=28.55.
2018 NLNEODyS17092060-2114161.53e-04-4.04-4.060NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2018-07-03.404 to 2018-08-10.604."
JPL Sentry15032060-210894.81238e-05-4.56-4.740JPL: Computed at 07:33 today Pacific time based on 30 observations spanning 38.200 days (2018-Jul-03.40294 to 2018-Aug-10.603303). Diameter approximately 0.029 km. from weighted mean H=25.33.

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 11 August '18

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

2310Updated Traffic Report
2301Grabbed MPEC 2018-P64 - 2018 PS10 - see above
Grabbed MPEC 2018-P65 - 2018 PT10 - see above
Grabbed MPEC 2018-P66 - 2018 PU10 - see above
Grabbed MPEC 2018-P67 - 2018 PV10 - see above
2233Grabbed MPEC 2018-P60 - 2018 PO10 - see above
Grabbed MPEC 2018-P61 - 2018 PP10 - see above
Grabbed MPEC 2018-P62 - 2018 PQ10 - see above
Grabbed MPEC 2018-P63 - 2018 PR10 - see above
2209Grabbed MPEC 2018-P59 - 2018 PN10 - see above
2138Grabbed MPEC 2018-P57 - 2018 PK10 - see above
Grabbed MPEC 2018-P58 - 2018 PM10 - see above
2100Grabbed MPEC 2018-P55 - 2018 PJ10 - see above
Grabbed MPEC 2018-P56 - 2018 PL10 - see above
1709Noted that NEODyS has updated its 2018 NL risk assessment - see above
Noted that NEODyS has updated its 2018 PR7 risk assessment - see above
Noted that NEODyS has updated its 2018 PY7 risk assessment - see above
1503Noted that JPL Sentry has updated its 2018 NL risk assessment - see above
Noted that JPL Sentry has updated its 2018 PR7 risk assessment - see above
Noted that JPL Sentry has updated its 2018 PY7 risk assessment - see above
1430Grabbed MPEC 2018-P53 - 2017 QY34 - see above
Grabbed MPEC 2018-P54 - Daily Orbit Update - see above