Contents  on 28 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 28 June '18

Two objects reported inside ten LD

There are two asteroids known to be less than ten lunar distances (LD) from our planet today. Nearest is 2018 MX4, outbound from 5.53 to 5.94 LD.

Neighborhood Traffic - sorted by Earth passage distance
Earth passage I D ~Size Distance today  Inside ten LD Notes
5.52 LD yesterday 2018 MX4 14 m  5.53 to 5.94 LD June 23 - July 2
6.01 LD tomorrow 2018 LR3 19 m  6.05 from 6.20 LD June 20 - July 8 NHATS target, risk
2.8   LD July 4* 2018 MB7 60 m  14.2 from 16.8 LD June 30 - July 8 Earth passage uncertainty +/- 40 mins.*

This report was generated at 1944 UTC with follow-up in today's DOU MPEC for departed objects 2018 MG7 and 441987 2010 NY65.

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 28 June '18

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2330 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 23 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 28 June '18

Minor Planet Electronic Circulars

As of last check at 2330 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 28 June '18 >>  MPEC 2018-M103 - "12:04 UT" - Daily Orbit Update

Observers  on 28 June '18

Seven observers appear in today's MPEC.

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 5 in MPEC 2018-M103 -- 2018 MG7, 68950, 66391, 441987, 138847
T08ATLAS Mauna Loa in Hawaii, 5 in MPEC 2018-M103 -- 2017 YE5, 2011 GA62, 18882, 162168, 5604
X74Campo dos Amarais Obs., 1 in MPEC 2018-M103 -- 4954
Z36Cancelada Obs., 1 in MPEC 2018-M103 -- 66391
160Castelmartini Obs. in Italy, 8 in MPEC 2018-M103 -- 68950, 65996, 415029, 398188, 162168, 139345, 13553, 7889
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-M103 -- 2018 LE3
C51WISE in Earth polar orbit, 1 in MPEC 2018-M103 -- 90367
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 28 June '18

At last check (NEODyS at 2330 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 28 June '18

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

1944Generated Traffic Report
1500Grabbed MPEC 2018-M103 - Daily Orbit Update - see above