Contents  on 29 May '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 29 May '18

Four objects reported inside ten LD

There are four small celestial objects reported inside ten lunar distances (LD) of our home world today. Nearest is 2018 KN2, which comes its closest to Earth on this passage -- 6.10 LD at 1510 UTC. Even further out, intruders 2018 KW1 and risk-listed 2018 KY2 leave our ten-LD traffic reporting "bubble."

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
0.39 LD May 23 2018 KW1 4 m  8.64 to 10.19 LD May 17 - 29 intruder, NHATS target, exits ten LD
0.78 LD May 26 2018 KY2 13 m  7.59 to 10.30 LD May 22 - 29 intruder, exits ten LD, risk
6.10 LD today 2018 KN2 27 m  6.10 LD May 25 - June 3 Earth closest at 1510 UTC
9.50 LD today 68347 2001 KB67 371 m  9.50 LD yesterday - tomorrow radar target, Earth closest at 0245 UTC
Approaching (sorted by 10-LD bubble entry date)
5.56 LD June 10 2018 EJ4 186 m  17.29 from 18.60 LD June 4 - 16 radar/NHATS target - DOU
8.96 LD June 11 2015 DP155 162 m  14.96 from 15.73 LD June 6 - 15 NHATS target - DOU

This report was generated at 1840 UTC with follow-up in today's DOU MPEC for approaching objects 2018 EJ4 and 2015 DP155 plus astrometry from mid-month for now departed intruder 2010 WC9.

<< Reading:  Think you have a tough commute? Slate has reposted an article about Spacewatch chief engineer Terry Bressi -- 6837 Bressi (1994 XN4) is named for him, who reports having had 380-plus encounters over the last sixteen years, including arrests, involving local police agencies and the U.S. Border Patrol. This while driving Arizona Route 86, "the only viable major road" connecting Tucson with the telescopes on Kitt Peak. He is again taking his legal issues to court.

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 29 May '18

The MPC's NEO Confirmation Page has 13 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had thirteen objects listed. Of these, four were "one nighters." So far The Tracking News has counted a total of nineteen 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 29 May '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 29 May '18 >>  MPEC 2018-K104 - "12:07 UT" - Daily Orbit Update

MPEC 2018-K103 - "11:42 UT" - 2018 KD3

MPEC 2018-K102 - "11:39 UT" - 2018 KC3

MPEC 2018-K101 - "11:36 UT" - 2018 KB3

Observers  on 29 May '18

Fourteen observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 6 in MPEC 2018-K104 -- 2018 KP2, 2018 JZ2, 2018 GM4, 2017 SB14, 514571, 368949
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2018-K104 -- 433
T08ATLAS Mauna Loa in Hawaii, 3 in MPEC 2018-K104 -- 2018 EJ4, 2015 DP155, 138847
V06Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2018-K101 -- 2018 KB3
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-K104 -- 2015 FP118
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 9 in MPECs 2018-K102, 2018-K103 & 2018-K104 -- 2018 KD3, 2018 KC3, 2018 KB1, 2018 JW1, 2018 EJ4, 2015 DP155, 2014 NE3, 2009 QJ9, 2004 TP1
G96Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2018-K101, 2018-K102 & 2018-K103 -- 2018 KD3, 2018 KC3, 2018 KB3
Z80Northolt Branch Obs. in England, 1 in MPEC 2018-K104 -- 139345
C23Olmen Obs. in Belgium, 1 in MPEC 2018-K104 -- 2010 WC9
W71Rand II Obs. in New York, 1 in MPEC 2018-K104 -- 450648
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2018-K102 & 2018-K103 -- 2018 KD3, 2018 KC3
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2018-K101 & 2018-K102 -- 2018 KC3, 2018 KB3
I52Steward Obs. Mt. Lemmon Station in Arizona, 3 in MPECs 2018-K101, 2018-K102 & 2018-K103 -- 2018 KD3, 2018 KC3, 2018 KB3
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-K104 -- 65996
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 May '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 29 May '18

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

1840Generated Traffic Report
1550Grabbed MPEC 2018-K101 - 2018 KB3 - see above
Grabbed MPEC 2018-K102 - 2018 KC3 - see above
Grabbed MPEC 2018-K103 - 2018 KD3 - see above
Grabbed MPEC 2018-K104 - Daily Orbit Update - see above