Contents  on 10 July '18

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 10 July '18

Five objects reported inside ten LD

Five minor planets are known to be less than ten lunar distances (LD) from Earth today. Closest is intruder 2018 NX, which leaves the Earth's sphere of gravitational influence as it travels from 1.79 to 2.54 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
0.30 LD July 7 2018 NX 10 m  1.79 to 2.54 LD June 24 - July 21 intruder, NHATS target, exits Earth SOI - DOU
0.32 LD July 8 2018 NW 9 m  8.87 to 13.61 LD July 6 - 10 intruder, exits ten LD, risk
1.4   LD July 17* 2018 NM 18 m  9.4 from 10.9 LD today - July 23 Earth passage uncertainty +/- 33 mins.*,
NHATS target, enters ten LD
2.37 LD July 7 2018 NJ 9 m  4.63 to 5.82 LD June 29 - July 14 NHATS target, risk
2.42 LD July 6 2018 NU 24 m  7.44 to 9.53 LD July 2 - 11
Approaching - sorted by 10-LD bubble entry date
9.36 LD Aug. 27 2018 LQ2 39 m  15.67 from 15.81 LD Aug. 17 - Sept. 6 NHATS target
4.22 LD Aug. 29 1998 SD9 49 m  146.59 from 151.46 LD Aug. 25 - Sept. 2

This report was generated at 2220 UTC with follow-up in today's DOU MPEC for outbound 2018 NX and departed objects 441987 2010 NY65 and 68347 2001 KB67, plus astrometry from November 2016 for 2016 WT7 and 2016 WG7.



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.

NEOCP Activity  on 10 July '18

The MPC's NEO Confirmation Page has 57 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 57 objects listed. Of these, 39 were "one nighters." So far The Tracking News has counted a total of 72 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 10 July '18

Minor Planet Electronic Circulars

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


MPEC 2018-N43 - "22:20 UT" - 2018 NJ1


MPEC 2018-N42 - "20:59 UT" - 2014 ME18


MPEC 2018-N41 - "20:57 UT" - 1998 YR11


MPEC 2018-N40 - "16:51 UT" - 2018 NG1


MPEC 2018-N39 - "16:47 UT" - 2018 NF1


MPEC 2018-N38 - "16:43 UT" - 2018 NE1


MPEC 2018-N37 - "16:38 UT" - 2018 ND1


<< DOU on 10 July '18 >>  MPEC 2018-N36 - "12:06 UT" - Daily Orbit Update

Observers  on 10 July '18

A total of 31 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2018-N38 -- 2018 NE1
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2018-N36 & 2018-N37 -- 2018 ND1, 2018 LY5, 2018 LO3, 2018 LF4, 2018 JJ2, 2015 MF60, 2013 TS132
T05ATLAS Haleakala in Hawaii, 4 in MPECs 2018-N36 & 2018-N38 -- 2018 NE1, 2018 LF5, 2018 GA5, 408752
160Castelmartini Obs. in Italy, 14 in MPEC 2018-N36 -- 2018 NV, 2018 NQ, 2018 MR8, 2015 BR514, 2014 NE3, 2011 GA62, 68950, 495829, 455550, 441987, 415029, 398188, 283729, 138847
G58Chabot Obs. in northern California, 2 in MPEC 2018-N36 -- 2018 MW6, 68347
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2018-N36 -- 2018 KT
I19El Gato Gris Obs. in Argentina, 1 in MPEC 2018-N38 -- 2018 NE1
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 3 in MPEC 2018-N36 -- 2015 MR101, 99799, 25916
734Farpoint Obs. in Kansas, 1 in MPEC 2018-N37 -- 2018 ND1
157Frasso Sabino Obs. in Italy, 1 in MPEC 2018-N36 -- 2015 RB82
J95Great Shefford Obs. in England, 3 in MPECs 2018-N36, 2018-N37 & 2018-N39 -- 2018 NX, 2018 NF1, 2018 ND1
A17Guidestar Obs. in Germany, 1 in MPEC 2018-N37 -- 2018 ND1
W19Kalamazoo Obs. in Michigan, 1 in MPEC 2018-N36 -- 15745
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2018-N36 -- 2061
474Mt. John Obs. in New Zealand, 1 in MPEC 2018-N43 -- 2018 NJ1
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2018-N37 -- 2018 ND1
Z80Northolt Branch Obs. in England, 2 in MPEC 2018-N36 -- 2018 MR8, 139345
G34Oberfrauendorf Obs. in Germany, 2 in MPEC 2018-N36 -- 2018 NV, 2018 NB
F51Pan-STARRS 1 (PS1) in Hawaii, 13 in MPECs 2018-N36, 2018-N39, 2018-N40, 2018-N41 & 2018-N43 -- 2018 NJ1, 2018 NG1, 2018 NF1, 2018 LD16, 2018 FS1, 2017 YE5, 2014 YR43, 2013 BF27, 2008 CP23, 2007 LT, 1998 YR11, 414960, 6063
F52Pan-STARRS 2 (PS2) in Hawaii, 6 in MPEC 2018-N36 -- 2018 NV, 2018 ME5, 2015 AM45, 68350, 518426, 719
D29Purple Mtn. Obs. Xuyi Station in China, 3 in MPEC 2018-N36 -- 2012 NP, 518426, 24761
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2018-N36 & 2018-N40 -- 2018 NG1, 495829
204Schiaparelli Obs. in Italy, 1 in MPEC 2018-N37 -- 2018 ND1
Y00SONEAR in Brazil, 3 in MPEC 2018-N36 -- 2018 NB, 2015 RB82, 65706
W34Squirrel Valley Obs. in North Carolina, 2 in MPEC 2018-N36 -- 2018 NX, 13553
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2018-N36 -- 2018 NV
A16Tentlingen Obs. in Switzerland, 1 in MPEC 2018-N36 -- 283729
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPECs 2018-N36 & 2018-N42 -- 2016 WT7, 2016 WG7, 2014 ME18
L01Visnjan Obs., 1 in MPEC 2018-N37 -- 2018 ND1
C51WISE in Earth polar orbit, 4 in MPEC 2018-N36 -- 2015 QM3, 443923, 140039, 1627
E08Wobblesock Obs. in New South Wales, 2 in MPECs 2018-N36 & 2018-N38 -- 2018 NE1, 2018 LF5
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 10 July '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 10 July '18

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

2302Grabbed MPEC 2018-N43 - 2018 NJ1 - see above
2220Generated Traffic Report
2134Grabbed MPEC 2018-N41 - 1998 YR11 - see above
Grabbed MPEC 2018-N42 - 2014 ME18 - see above
2030Grabbed MPEC 2018-N37 - 2018 ND1 - see above
Grabbed MPEC 2018-N38 - 2018 NE1 - see above
Grabbed MPEC 2018-N39 - 2018 NF1 - see above
Grabbed MPEC 2018-N40 - 2018 NG1 - see above
1331Grabbed MPEC 2018-N36 - Daily Orbit Update - see above