Contents  on 13 July '19

NOTE:  These A/CC news pages will update less often for an extended period. All discoveries and observing credits will be reported, but we may miss some interim impact risk assessments and undercount NEOCP objects, and there may be some days without a traffic report for Earth's Busy Neighborhood.

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 13 July '19

Six objects reported inside ten LD

Six asteroids are reported to be less than ten lunar distances (LD) from Earth today. The closest appears to be risk-listed 2019 NX5, which is calculated with some uncertainty to be outbound from about 3.0 to 3.2 LD*.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.82 LD July 9 2019 MB4 21 m  5.91 to 7.47 LD July 2 - 15 intruder
0.83 LD July 10 2019 NN3 37 m  4.62 to 6.56 LD July 5 - 15 intruder
2.13 LD July 10 2019 NM5 13 m  5.12 to 6.95 LD July 5 - 15
2.6   LD July 9* 2019 NX5 5 m  3.0 to 3.2 LD June 13 - Aug. 4 EPU +/- 21 mins.*, NHATS target, risk
5.56 LD July 9 2019 NP5 10 m  6.44 to 7.05 LD July 2 - 17 NHATS target, risk
7.82 LD today 2019 MW1 43 m  7.82 LD July 9 - 16 Earth closest at 0410 UTC
Approaching
6.6   LD July 29* 2019 NN4 26 m  14.2 from 15.0 LD July 20 - Aug. 6 EPU +/- 13 mins.*, NHATS target
* EPU = Earth passage uncertainty

This report was generated at 1740 UTC with follow-up in today's DOU MPEC for departed 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. "LD*" indicates some uncertainty in object passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

Radar Astrometry  on 13 July '19

Radar observation of four objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 1925 UTC when the database was dated 13 July


Data update noted at 2132 UTC when the database was dated 13 July

NEOCP Activity  on 13 July '19

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 26 listings on the NEOCP today.

New MPECs  on 13 July '19

Minor Planet Electronic Circulars

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


MPEC 2019-N154 - "13:13 UT" - 2019 NT6


MPEC 2019-N153 - "13:08 UT" - 2019 NS6


<< DOU on 13 July '19 >>  MPEC 2019-N152 - "12:03 UT" - Daily Orbit Update

Observers  on 13 July '19

Thirteen observers appear in today's MPECs.

CodeObserver / observatory
251Arecibo in Puerto Rico, 4 in radar -- 2019 DN, 2019 CD5, 2015 EG, 88254
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2019-N153 & 2019-N154 -- 2019 NT6, 2019 NS6
160Castelmartini Obs. in Italy, 9 in MPEC 2019-N152 -- 2019 KD3, 2019 EQ1, 85989, 68950, 453778, 441987, 366733, 355256, 12538
703Catalina Sky Survey (CSS) in Arizona, 20 in MPEC 2019-N152 -- 2019 GD3, 2019 BJ5, 89355, 87025, 68950, 66391, 441825, 267759, 231134, 173561, 163051, 162082, 143947, 141593, 137170, 12538, 112221, 7889, 6178, 3103
J95Great Shefford Obs. in England, 3 in MPEC 2019-N152 -- 2019 NW5, 2019 NE2, 2019 ME1
K92LCO Sutherland B in South Africa, 1 in MPEC 2019-N152 -- 2019 MA2
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2019-N152 -- 433
568^R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2019-N153 & 2019-N154 -- 2019 NT6, 2019 NS6
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPECs 2019-N152, 2019-N153 & 2019-N154 -- 2019 NT6, 2019 NS6, 483563, 7889
F52Pan-STARRS 2 (PS2) in Hawaii, 3 in MPEC 2019-N152 -- 2005 UC, 231134, 12538
K19PASTIS Obs. in France, 1 in MPEC 2019-N152 -- 12538
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2019-N152 -- 90403
I41Zwicky Transient Facility (ZTF) in southern California, 7 in MPEC 2019-N152 -- 2009 OB3, 85867, 468741, 455736, 267759, 162082, 7889
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 July '19

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 13 July '19

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

2132Noted Radar Astrometry database update - see above
1925Noted Radar Astrometry database update - see above
1740Generated Traffic Report
1430Grabbed MPEC 2019-N152 - Daily Orbit Update - see above
Grabbed MPEC 2019-N153 - 2019 NS6 - see above
Grabbed MPEC 2019-N154 - 2019 NT6 - see above