Contents  on 1 September '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 1 September '18

Three objects reported inside ten LD

Three asteroids are known to be within ten lunar distances (LD) of our planet today. All of them are outbound and well beyond seven LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
4.21 LD Aug. 29 1998 SD9 49 m  7.71 to 9.81 LD Aug. 25 - tomorrow radar target - DOU
7.80 LD Aug. 23 2018 PU23 8 m  8.24 to 8.34 LD Aug. 7 - Sept. 13 NHATS target, risk
9.36 LD Aug. 27 2018 LQ2 37 m  9.47 to 9.54 LD Aug. 17 - Sept. 6 NHATS target - DOU
Approaching Traffic
8.50 LD Sept. 20 2017 SL16 23 m  28.07 from 29.42 LD Sept. 17 - 24 NHATS target

This report was generated at 1744 UTC with follow-up in today's DOU MPEC for outbound objects 2018 LQ2 and 1998 SD9 and for departed 2018 QZ.



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 1 September '18

The MPC's NEO Confirmation Page has 7 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had seven objects listed. Of these, four were "one nighters." So far The Tracking News has counted a total of nine 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 1 September '18

Minor Planet Electronic Circulars

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


<< DOU on 1 Sept. '18 >>  MPEC 2018-R04 - "12:04 UT" - Daily Orbit Update


MPEC 2018-R03 - "05:10 UT" - 2017 UX51


MPEC 2018-R02 - "05:09 UT" - 2017 NM2


MPEC 2018-R01 - "05:07 UT" - 2015 BX518

Observers  on 1 September '18

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 15 in MPEC 2018-R04 -- 2018 QZ, 2018 QW, 2018 QU1, 2018 QT1, 2018 QP, 2018 PL9, 2018 PK10, 2018 PJ22, 2018 OB, 2018 NR, 2018 NN4, 2018 NN, 2018 LQ2, 2018 KE3, 2018 FO5
T05ATLAS Haleakala in Hawaii, 13 in MPEC 2018-R04 -- 2018 PK22, 2018 NU3, 2016 NF23, 2010 RO82, 2001 RQ17, 1999 RV2, 467917, 419022, 410088, 337252, 190788, 5646, 1916
T08ATLAS Mauna Loa in Hawaii, 19 in MPEC 2018-R04 -- 2018 LQ2, 2015 FP118, 2013 EP41, 2011 GA62, 2002 OS4, 2001 SC170, 1999 RB32, 86324, 481394, 418929, 414960, 283729, 163818, 162168, 13553, 3752, 2061, 1865, 433
X74Campo dos Amarais Obs., 1 in MPEC 2018-R04 -- 7889
160Castelmartini Obs. in Italy, 6 in MPEC 2018-R04 -- 2018 PW7, 2011 GA62, 438429, 414960, 31345, 21277
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 7 in MPEC 2018-R04 -- 2018 PW23, 2018 PO10, 2018 PM22, 2018 PG22, 2018 PE9, 2015 DV180, 2014 SG143
J27El Guijo Obs. in Spain, 3 in MPEC 2018-R04 -- 1999 RB32, 481394, 115052
J95Great Shefford Obs. in England, 2 in MPEC 2018-R04 -- 2018 QU1, 2018 QT1
W19Kalamazoo Obs. in Michigan, 2 in MPEC 2018-R04 -- 2015 FP118, 6456
695^Spacewatch via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2018-R04 -- 2018 PM22
C41MASTER-II Kislovodsk in Russia, 1 in MPEC 2018-R04 -- 162168
J69North Obs. in England, 2 in MPEC 2018-R04 -- 2018 QU1, 2011 UA
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-R04 -- 1998 SD9
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPECs 2018-R01, 2018-R02 & 2018-R03 -- 2017 UX51, 2017 NM2, 2015 BX518
W25RMS Obs., 2 in MPEC 2018-R04 -- 2018 PK22, 140039
C95SATINO-1 in France, 1 in MPEC 2018-R04 -- 2002 OS4
G403Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-R04 -- 2018 QU1
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2018-R04 -- 2018 GA5, 2008 RT26
291Spacewatch 1.8m telescope in Arizona, 9 in MPEC 2018-R04 -- 2018 QP, 2018 PX7, 2018 PV10, 2018 PU21, 2018 PL23, 2018 PE9, 2017 DQ35, 2011 EJ47, 2008 EM7
I52Steward Obs. Mt. Lemmon Station in Arizona, 13 in MPEC 2018-R04 -- 2018 QT, 2018 QP, 2018 QO1, 2018 PW23, 2018 PT21, 2018 PM22, 2018 PJ9, 2018 PJ22, 2018 PB22, 2018 FS3, 2017 NK, 2016 CL264, 2014 SG143
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2018-R04 -- 2014 PW59
C51WISE in Earth polar orbit, 3 in MPEC 2018-R04 -- 53789, 518463, 308899
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 September '18

At last check (NEODyS at 2358 UTC) there was no risk monitoring news to report yet today. Visit the CRT to view activity in the last four weeks and our ephemerides page for a complete list of risk-rated objects under current observation or having recent news.

Chronology  on 1 September '18

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

1744Generated Traffic Report
1500Grabbed MPEC 2018-R01 - 2015 BX518 - see above
Grabbed MPEC 2018-R02 - 2017 NM2 - see above
Grabbed MPEC 2018-R03 - 2017 UX51 - see above
Grabbed MPEC 2018-R04 - Daily Orbit Update - see above