Contents  on 9 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 9 June '17

Four objects reported inside ten LD

Four is today's count of asteroids passing through a "bubble" of space defined by ten lunar distances (LD) from Earth's center. Risk-listed 2017 LD is the nearest, outbound from 4.84 to 5.72 LD.

Earth passage I D ~Size Distance Today  Notes
1.02 LD June 62017 KQ27 23 m  5.78 to 8.14 LD risk
1.90 LD May 242017 KJ32 6 m  8.76 to 9.29 LD risk
2.99 LD June 52017 LD 10 m  4.84 to 5.72 LD risk
5.18 LD June 72017 LE 18 m  6.47 to 7.83 LD

This report was generated at 1826 UTC with follow-up in today's DOU MPEC for departed radar targets 2017 CS and 418094 2007 WV4.

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. 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 9 June '17

The MPC's NEO Confirmation Page has 16 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had sixteen objects listed. Of these, one was a "one nighter."

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 9 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 9 June '17 >>  MPEC 2017-L55 - "12:02 UT" - Daily Orbit Update

Observers  on 9 June '17

Nine observers appear in today's MPEC.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 5 in MPEC 2017-L55 -- 190166, 142040, 141056, 106589, 6063
T08ATLAS Mauna Loa in Hawaii, 2 in MPEC 2017-L55 -- 66391, 11398
160Castelmartini Obs. in Italy, 10 in MPEC 2017-L55 -- 2017 CS, 2011 ED78, 66391, 418094, 416584, 163696, 142561, 142040, 11398, 2102
822Cordoba Obs. in Argentina, 1 in MPEC 2017-L55 -- 138846
203GiaGa Obs. in Italy, 3 in MPEC 2017-L55 -- 2017 HY50, 2011 ED78, 6063
Z43Landehen Obs., 3 in MPEC 2017-L55 -- 2017 CS, 418094, 11398
K38M57 Obs. in Italy, 1 in MPEC 2017-L55 -- 2017 GQ6
926Tenagra II Obs. in Arizona, 6 in MPEC 2017-L55 -- 2017 LG, 86819, 418094, 416584, 138846, 106589
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-L55 -- 2017 JD3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 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 9 June '17

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

1826Generated Traffic Report
1452Grabbed MPEC 2017-L55 - Daily Orbit Update - see above