Contents  on 11 June '17

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 June '17

Three objects reported inside ten LD

Three asteroidal objects are reported passing within ten lunar distances (LD) of Earth today. Risk-listed 2017 LD is outbound from 6.65 to 7.61 LD, 2017 LE leaves ten LD, moving from 9.43 to 11.16 LD, and risk-listed 2017 KJ32 also leaves, traveling from 9.83 to 10.36 LD.

This report was generated at 1926 UTC with follow-up in today's DOU MPEC for departed radar targets 2017 CS and 418094 2007 WV4, and for distant 484402 2007 XH16.

Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting on transient natural objects that approach the actually significant 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 come within ten LD since A/CC began these traffic reports ten-plus years ago but is not currently coming so close. Object 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 June '17

The MPC's NEO Confirmation Page has 19 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had nineteen objects listed. Of these, three were "one nighters."

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 June '17

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 11 June '17 >>  MPEC 2017-L57 - "11:59 UT" - Daily Orbit Update

Observers  on 11 June '17

Thirteen observers appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPEC 2017-L57 -- 2017 HY50, 2017 CS, 2011 ED78, 68950, 66391, 54789, 494706, 456651, 329774, 190166, 142040, 6063, 4341, 1980
T05ATLAS Haleakala in Hawaii, 3 in MPEC 2017-L57 -- 66391, 418094, 11398
T08ATLAS Mauna Loa in Hawaii, 3 in MPEC 2017-L57 -- 484402, 163696, 4954
D08Ghezz Obs. in Switzerland, 1 in MPEC 2017-L57 -- 494706
203GiaGa Obs. in Italy, 3 in MPEC 2017-L57 -- 2017 HN3, 2013 BR45, 418094
K38M57 Obs. in Italy, 2 in MPEC 2017-L57 -- 2017 CS, 418094
W92MASTER OAFA Obs., 2 in MPEC 2017-L57 -- 4954, 1036
K74Muensterschwarzach Obs. in Germany, 3 in MPEC 2017-L57 -- 2017 CS, 416584, 2102
Z80Northolt Branch Obs. in England, 1 in MPEC 2017-L57 -- 418094
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPEC 2017-L57 -- 2017 GQ6, 2004 MD6, 1995 LG, 367525, 141670
G403Tony Evans in Portugal via Canary Islands Obs. in the Canary Islands, 1 in MPEC 2017-L57 -- 2017 HY50
W34Squirrel Valley Obs. in North Carolina, 3 in MPEC 2017-L57 -- 66391, 11398, 6063
W33Transit Dreams Obs., 6 in MPEC 2017-L57 -- 66391, 137170, 11398, 6063, 2329, 2102
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 11 June '17

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 11 June '17

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

1926Generated Traffic Report
1536Grabbed MPEC 2017-L57 - Daily Orbit Update - see above