Contents  on 1 June '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 June '18

One object reported inside ten LD

One asteroidal object is known to be less than ten lunar distances (LD) from our planet today. 2018 KN2 heads out from 7.44 to 8.60 LD.

Neighborhood Traffic
Earth passage I D ~Size Distance today  Inside ten LD Notes
6.10 LD May 29 2018 KN2 27 m  7.44 to 8.60 LD May 25 - June 3
Approaching (sorted by 10-LD bubble entry date)
5.56 LD June 10 2018 EJ4 186 m  13.44 from 14.71 LD June 4 - 16 radar/NHATS target - DOU
8.96 LD June 11 2015 DP155 162 m  12.76 from 13.47 LD June 6 - 15 NHATS target

This report was generated at 1725 UTC with follow-up in today's DOU MPEC for approaching 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. 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 June '18

The MPC's NEO Confirmation Page has 4 listings

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

Minor Planet Electronic Circulars

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

<< DOU on 1 June '18 >>  MPEC 2018-L01 - "12:02 UT" - Daily Orbit Update

Observers  on 1 June '18

Fourteen observers appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPEC 2018-L01 -- 2018 GA4, 2015 XP55, 518507
T05ATLAS Haleakala in Hawaii, 10 in MPEC 2018-L01 -- 513497, 475967, 405212, 36183, 25916, 164121, 162168, 5604, 1685, 1036
T08ATLAS Mauna Loa in Hawaii, 5 in MPEC 2018-L01 -- 2018 EJ4, 66391, 163243, 15745, 1627
C77Bernezzo Obs. in Italy, 1 in MPEC 2018-L01 -- 2018 EJ4
238Grorudalen Obs. in Norway, 1 in MPEC 2018-L01 -- 66391
G48Harlingten Research Obs. in New Mexico, 2 in MPEC 2018-L01 -- 2018 KM1, 2018 JK3
K38M57 Obs. in Italy, 1 in MPEC 2018-L01 -- 2018 EJ4
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2018-L01 -- 2018 HU3
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2018-L01 -- 2018 HU3
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2018-L01 -- 494999
291Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2018-L01 -- 2018 ED4, 2017 UE45, 2016 LJ49
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2018-L01 -- 2018 HU3
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-L01 -- 2018 HQ1
Z92West Park Obs. in England, 1 in MPEC 2018-L01 -- 66391
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 June '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 June '18

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

1725Generated Traffic Report
1600Grabbed MPEC 2018-L01 - Daily Orbit Update - see above