Contents  on 21 May '19

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 21 May '19

Four objects reported inside ten LD

Four small celestial objects are reported within ten lunar distances (LD) of our planet today. 2019 JL3 is the closest and moves away from 2.82 to 4.14 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
2.48 LD yesterday 2019 JL3 36 m  2.82 to 4.14 LD May 15 - 25
4.14 LD May 17 2012 KT12 19 m  5.12 to 5.69 LD May 7 - 27 NHATS target
5.56 LD May 17 2019 JG1 16 m  9.02 to 10.50 LD May 12 - 21 NHATS target, exits ten LD
6.09 LD May 17 2019 GT1 34 m  6.65 to 7.06 LD May 8 - 26 NHATS target

This report was generated at 1910 UTC with astrometry from early this month in today's DOU MPEC for 2019 JV1, 2019 JJ, 2019 JF, and 2019 HN3.

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 21 May '19

The MPC's NEO Confirmation Page has 40 listings

When last checked at 2305 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 40 objects listed. Of these, five were "one nighters." So far The Tracking News has counted a total of 47 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 21 May '19

Minor Planet Electronic Circulars

As of last check at 2305 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 21 May '19 >>  MPEC 2019-K10 - "12:31 UT" - Daily Orbit Update

Observers  on 21 May '19

Four observers appear in today's MPEC.

CodeObserver / observatory
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 18 in MPEC 2019-K10 -- 2019 JV1, 2019 JN1, 2019 JL1, 2019 JJ, 2019 JF, 2019 HT3, 2019 HP2, 2019 HO, 2019 HK3, 2019 GR1, 2019 GQ2, 2019 GP3, 2019 GM19, 2019 GB4, 2019 CS, 2019 AV2, 2018 YJ, 2018 VZ9
E89Geyserland Obs. in New Zealand, 3 in MPEC 2019-K10 -- 163902, 140928, 10145
108Montelupo Obs. in Italy, 1 in MPEC 2019-K10 -- 2008 HS3
204Schiaparelli Obs. in Italy, 7 in MPEC 2019-K10 -- 2019 HN3, 2019 GZ6, 2019 FY, 2019 FP2, 2019 FG1, 2018 XG5, 2016 GG135
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 21 May '19

At last check (NEODyS at 2305 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 21 May '19

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

1910Generated Traffic Report
1620Grabbed MPEC 2019-K10 - Daily Orbit Update - see above