Contents  on 13 August '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 13 August '17

No objects reported inside ten LD

There are no asteroids known to be within ten lunar distances (LD) of our planet today, but newly announced 2017 PD25 will briefly pass through our ten-LD reporting sphere starting tomorrow.

Approaching (sorted by 10-LD bubble entry date)
9.62 LD Aug. 162017 PD25 29 m  < 10 LD tomorrow, NEW - MPEC
7.87 LD Sept. 291989 VB 389 m  < 10 LD Sept. 25
0.13 LD Oct. 122012 TC4 15 m  < 10 LD Oct. 5, intruder, radar/NHATS target, risk
8.5   LD Oct. 132005 TE49 15 m  < 10 LD Oct. 11, uncertainty +/- 10.1167 hours, NHATS target
5.77 LD Oct. 22171576 1999 VP11 645 m  < 10 LD Oct. 20

This report was updated at 1722 UTC with the discovery of 2017 PD25 (MPEC). Your first neighborhood flying rocks traffic report was generated at 1440 UTC.

NASA/JPL has a news item telling that radar target 3122 Florence (1981 ET3) will be "the largest asteroid [about 4.3 km.] to pass this close to our planet [18.38 LD September 1st] since the first near-Earth asteroid was discovered over a century ago."



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 13 August '17

The MPC's NEO Confirmation Page has 49 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 49 objects listed. Of these, 21 were "one nighters." So far The Tracking News has counted a total of 55 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 13 August '17

Minor Planet Electronic Circulars

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


MPEC 2017-P45 - "14:58 UT" - 2017 PD25


<< DOU on 13 Aug. '17 >>  MPEC 2017-P44 - "12:04 UT" - Daily Orbit Update

Observers  on 13 August '17

Nineteen observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2017-P45 -- 2017 PD25
H21Astronomical Research Obs. Westfield in Illinois, 28 in MPEC 2017-P44 -- 2017 OU18, 2017 OT18, 2017 OH7, 2017 OG1, 2017 MK7, 2017 GQ6, 2014 CF14, 2012 HN8, 2011 YU62, 2008 MH1, 90075, 68950, 66146, 494706, 374449, 294739, 265962, 222073, 190166, 143624, 142561, 142040, 11398, 7336, 6053, 4197, 2329, 1980
T05ATLAS Haleakala in Hawaii, 10 in MPEC 2017-P44 -- 2017 OF7, 2017 GQ6, 495959, 488494, 485652, 385580, 341816, 232368, 159467, 3752
T08ATLAS Mauna Loa in Hawaii, 10 in MPEC 2017-P44 -- 2008 MH1, 422699, 265962, 20460, 154144, 142464, 142040, 12538, 100926, 6053
U63Burnt Tree Hill Obs., 1 in MPEC 2017-P44 -- 496018
160Castelmartini Obs. in Italy, 9 in MPEC 2017-P44 -- 2017 OD1, 2014 YC15, 496018, 495848, 422699, 265962, 190166, 142561, 1980
107Cavezzo Obs. in Italy, 2 in MPEC 2017-P44 -- 2017 OT18, 142561
006Fabra Obs. in Spain, 1 in MPEC 2017-P44 -- 90075
K73Gravina Obs. in Italy, 1 in MPEC 2017-P44 -- 190166
950.EURONEAR via La Palma in the Canary Islands, 1 in MPEC 2017-P44 -- 2015 TB353
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2017-P44 -- 2016 OT5
J69North Obs. in England, 1 in MPEC 2017-P44 -- 2017 OT18
C27Pallerols Obs. in Spain, 2 in MPEC 2017-P44 -- 2017 OL1, 2017 OD1
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2017-P44 & 2017-P45 -- 2017 PD25, 2016 OT5, 2015 TB353, 2015 BJ528, 2012 SQ56, 2005 QC, 434096, 162120, 142561
W25RMS Obs., 1 in MPEC 2017-P45 -- 2017 PD25
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2017-P45 -- 2017 PD25
H36Sandlot Obs. in Kansas, 1 in MPEC 2017-P45 -- 2017 PD25
G403Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2017-P44 -- 2017 OD1
T09UH/Tholen NEO Follow-Up Subaru Telescope in Hawaii, 1 in MPEC 2017-P44 -- 2014 NG65
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 August '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 13 August '17

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

1722Updated Traffic Report
1630Grabbed MPEC 2017-P45 - 2017 PD25 - see above
1430Grabbed MPEC 2017-P44 - Daily Orbit Update - see above