Contents  on 3 May '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 3 May '18

One object reported inside ten LD

One minor object is known to be within ten lunar distances (LD) of Earth today. 2018 HM2 is edging away from 9.32 to 9.94 LD.

Neighborhood Traffic
Earth passage I D ~Size Distance today  Inside ten LD Notes
8.72 LD April 30 2018 HM2 62 m  9.32 to 9.94 LD April 27 - tomorrow NHATS target - DOU
Approaching (sorted by 10-LD bubble entry date)
6.2   LD May 8* 2016 JQ5 8 m  11.6 from 13.7 LD tomorrow - May 11 EPU +/- 14.00 hours*
9.65 LD May 7 1999 FN19 112 m  10.67 from 11.27 LD May 5 - 9 radar/NHATS target
6.48 LD May 9 388945 2008 TZ3 282 m  12.81 from 14.61 LD May 5 - 13 DOU
9.50 LD May 29 68347 2001 KB67 371 m  78.90 from 82.27 LD May 28 - 30 radar target
5.56 LD June 10 2018 EJ4 186 m  51.04 from 52.29 LD June 4 - 16 radar/NHATS target
8.96 LD June 11 2015 DP155 162 m  35.96 from 36.72 LD June 6 - 15 NHATS target - DOU
* EPU = Earth passage uncertainty

This report was generated at 1845 UTC with first follow-up for outbound 2018 HM2 in today's DOU MPEC along with continuing follow-up for approaching 2015 DP155, and 388945 2008 TZ3 plus pre-recovery observation from March of 2003 FY6, adding 10.00 days to its previous 19.91-day observation arc. (During this apparition the object passed outside our ten-LD traffic reporting zone.)


<< Reading:  An article about mining near-Earth objects conjectures that "Taking into account [various] probabilities, we are left with only 10 asteroids that are -- theoretically -- economically worthwhile and practically feasible to mine," but which 10?
        Anyone with an interest in technical illustration of minor objects and the visual application of imagery and science data to 3D surfaces using publicly accessible data and software tools should see a preprint posted today. Go straight to the PDF for details and examples.



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 3 May '18

The MPC's NEO Confirmation Page has 6 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had six objects listed. Of these, two were "one nighters." So far The Tracking News has counted a total of seven 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 3 May '18

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 3 May '18 >>  MPEC 2018-J03 - "12:10 UT" - Daily Orbit Update

Observers  on 3 May '18

Fifteen observers appear in today's MPEC.

CodeObserver / observatory
C97Al-Fulaij Obs., 8 in MPEC 2018-J03 -- 2016 JP, 2013 US3, 475967, 337084, 138847, 9856, 1866, 1036
K46Bamberg Obs. in Germany, 1 in MPEC 2018-J03 -- 25916
160Castelmartini Obs. in Italy, 4 in MPEC 2018-J03 -- 85628, 444193, 388945, 1627
703Catalina Sky Survey in Arizona, 1 in MPEC 2018-J03 -- 2015 DP155
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2018-J03 -- 2003 FY6
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2018-J03 -- 433
C95SATINO-1 in France, 1 in MPEC 2018-J03 -- 1999 AF4
Y00SONEAR in Brazil, 2 in MPEC 2018-J03 -- 444193, 194126
691Spacewatch 0.9m telescope in Arizona, 7 in MPEC 2018-J03 -- 2018 HQ, 2018 GR2, 2018 GJ1, 2018 GG5, 2018 FS3, 2018 FO5, 2015 FP118
291Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2018-J03 -- 2018 HA1, 2018 GS1, 2018 FJ4, 2018 EE, 2017 SG14, 2013 AW52
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2018-J03 -- 2013 US3
W33Transit Dreams Obs., 1 in MPEC 2018-J03 -- 2013 US3
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPEC 2018-J03 -- 2016 XH2, 2016 TB18, 265482
C51WISE in Earth polar orbit, 1 in MPEC 2018-J03 -- 14402
E08Wobblesock Obs. in New South Wales, 4 in MPEC 2018-J03 -- 2018 HM2, 2018 HH2, 2018 GR2, 2018 FV4
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 May '18

At last check (NEODyS at 2359 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 3 May '18

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

1845Generated Traffic Report
1616Grabbed MPEC 2018-J03 - Daily Orbit Update - see above