2018-06-08 Tracking News

Contents on 8 June '18

Traffic Report -- two objects
IAU Minor Planet Center
- NEOCP Activity -- 24 listings
- New MPECs -- eight MPECs
Observers -- 34 observers
Impact Risk Monitoring -- five objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 939 risk-listed objects, 52 have had news in the last 31 days. Updated at 2006 UTC on 8 June.
Ephemerides for risk-listed objects & close passers
News archive (old) & news image catalog (discontinued)
Object Links - mainly for radar targets & close passers (mostly discontinued)
Observing Campaigns (old)

The latest A/CC news is available via framed access, 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 8 June '18

Two objects reported inside ten LD

Two asteroids are reported inside ten lunar distances (LD) of our planet today. Nearest is 2018 EJ4, which is inbound from 6.79 to 6.10 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage	I D	~Size	Distance today	Inside ten LD	Notes
5.56 LD June 10	2018 EJ4	186 m	6.10 from 6.79 LD	June 4 - 16	radar/NHATS target - DOU
8.96 LD June 11	2015 DP155	162 m	9.23 from 9.52 LD	June 6 - 15	NHATS target

Approaching (sorted by 10-LD bubble entry date)
1.6 LD June 14*	2018 LD1	18 m	14.1 from 16.5 LD	June 10 - 18	Earth passage uncertainty +/- 5 mins.*, risk - DOU
7.62 LD June 15	2018 LK	147 m	20.60 from 23.23 LD	June 13 - 18

This report was generated at 1823 UTC with follow-up in today's DOU MPEC for approaching risk-listed 2018 LD1, inbound 2018 EJ4, and departed risk-listed objects 2018 LE1 and 2018 LM, plus astrometry from March for 2003 FY6.

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 8 June '18

The MPC's NEO Confirmation Page has 24 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 24 objects listed. Of these, eleven were "one nighters." So far The Tracking News has counted a total of 36 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 8 June '18

Minor Planet Electronic Circulars

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

MPEC 2018-L29 time-stamped "12:03 UT" - Daily Orbit Update - see below
MPEC 2018-L30 time-stamped "18:18 UT" - 2018 LK2 - see below
MPEC 2018-L31 time-stamped "18:21 UT" - 2018 LL2 - see below
MPEC 2018-L32 time-stamped "18:25 UT" - 2018 LN2 - see below
MPEC 2018-L33 time-stamped "18:31 UT" - 2018 LM2 - see below
MPEC 2018-L34 time-stamped "20:20 UT" - 2013 JG29 - see below
MPEC 2018-L35 time-stamped "21:10 UT" - 2018 KB4 - see below
MPEC 2018-L36 time-stamped "23:31 UT" - Comet P/2018 L1 (Panstarrs)

MPEC 2018-L36 - "23:31 UT" - Comet P/2018 L1 (Panstarrs)

PK18L010 P/2018 L1 (Panstarrs) (q=1.885 AU, Q=5.391 AU, TP=2018 Nov. 12.60605 TT) was picked up at 0649 UT on 3 June by Pan-STARRS 1 (PS1), observing it at June 3.28-31p3. This detection was confirmed by the Mt. Lemmon Survey (MLS) (May 18.23-24p4), Sandlot Obs. (June 4.13-16p3), Steward Obs. Mt. Lemmon Station (June 4.16-18p4 & 7.20-23p3), Hidetaka Sato via iTelescope Obs. Siding Spring (June 4.49-50p3), B. Lutkenhoner via Slooh.com Canary Islands Obs. (June 4.91-94p3), program code "(" (17) via Slooh.com Canary Islands Obs. (June 4.94-95p2 & 7.94p2), the Spacewatch 0.9m telescope (June 5.24-25p3 & 6.16-18p3), and R. Wainscoat on Mauna Kea (June 6.34p3).

MPEC 2018-L35 - "21:10 UT" - 2018 KB4

K18K04B 2018 KB4 (H=21.2 ~195m) was picked up at 1335 UT on 26 May by PS1, observing it at May 26.57-60p4. This detection was confirmed by San Marcello Pistoiese Obs. (May 26.99-01p3), LCO Sutherland A (May 27.02-03p4), Visnjan Obs. (May 27.02-04p8), Steward Mt. Lemmon Sta. (May 27.46p4, June 2.44p4 & 3.43p4), Golden Hill Obs. (May 28.05-09p5), Slooh.com CIO/code "(" (17) (May 28.16-17p3), Richard Miles via Faulkes Telescope South (June 4.67p2), Sato/iTelObs-SSO (June 4.68p2 & 6.56p3), R. Wainscoat/Mauna Kea (June 6.59p3), and Auger Obs. (June 7.43p2).

MPEC 2018-L34 - "20:20 UT" - 2013 JG29

K13J29G 2013 JG29 (H=20.8 ~234m) from PS1 (Jan. 6.22-23p4 at G=22.4-23.2, May 21.53p1 at G=20.3 & June 8.41-45p4 at w=21.0-2)

MPEC 2018-L33 - "18:31 UT" - 2018 LM2

K18L02M 2018 LM2 (small asteroid, H=24.3 ~47m) was picked up at 0414 UT on 6 June by MLS, observing it at June 6.18-19p4, 7.22-24p4, and 8.23-24p4. This detection was confirmed by Steward Mt. Lemmon Sta. (June 6.30p3, 7.15-16p3 & 8.21p3).

MPEC 2018-L32 - "18:25 UT" - 2018 LN2

K18L02N 2018 LN2 (small asteroid, H=23.1 ~81m) was picked up at 0547 UT on 6 June by MLS, observing it at June 6.24-26p4. This detection was confirmed by McDonald Obs. (June 6.36-37p3), Steward Mt. Lemmon Sta. (June 6.41p4, 7.43p4 & 8.25p4), and Visnjan Obs. (June 6.94-96p4).

MPEC 2018-L31 - "18:21 UT" - 2018 LL2

K18L02L 2018 LL2 (Q=4.223 AU, H=20.3 ~295m) was picked up at 0348 UT on 6 June by MLS, observing it at June 6.16-17p4. This detection was confirmed by PS1 (May 25.27-31p2), Steward Mt. Lemmon Sta. (June 6.30-31p4 & 8.17p4), Visnjan Obs. (June 6.88-89p2), Great Shefford Obs. (June 6.94-95p2), and JAXA Space Tracking & Communications Center (JAXA STCC) (June 7.54-56p4).

MPEC 2018-L30 - "18:18 UT" - 2018 LK2

K18L02K 2018 LK2 (risk listed, H=19.8 ~371m) was picked up at 2220 UT on 2 June by WISE, observing it at June 2.93p1, 2.99p2, 3.06p1, 3.26p1, and 3.32p1. This detection was confirmed by Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (June 5.30-31p5 & 7.34-35p3), Mt. John Obs. (June 7.64-65p3), and Joseph Masiero via Gemini South Obs. (June 8.40p3).

<< DOU on 8 June '18 >> MPEC 2018-L29 - "12:03 UT" - Daily Orbit Update

Observations of risk-listed objects
K18L01E 2018 LE1 (small asteroid, arc=3 days, H=27.4 ~11m, close passer, NHATS target) from Spacewatch 0.9m (June 8.18-19p2)
K18L01D 2018 LD1 (small asteroid, arc=3 days, H=26.2 ~19m, close passer) from Spacewatch 0.9m (June 8.19-20p3)
K18L01B 2018 LB1 (Q=4.574 AU, arc=20 days, H=20.1 ~323m) from the Spacewatch 1.8m telescope (June 8.30-31p3)
K18L00M 2018 LM (small asteroid, arc=4 days, H=25.1 ~32m, close passer, NHATS target) from Astronomical Research Obs. Westfield (June 6.15p1), Spacewatch 0.9m (June 8.16p3), and Steward Mt. Lemmon Sta. (June 8.20p3)
Observations of recently (no longer) risk-listed objects
K18K01B 2018 KB1 (arc=22 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (June 8.40-41p4)
K18J01Z 2018 JZ1 (small asteroid, arc=29 days, H=23.7 ~62m) from Mt. John Obs. (June 7.31-32p3)
Observations of close-passing objects
K18E04J 2018 EJ4 (arc=86 days, H=21.3 ~186m, NHATS target, radar support) from Northolt Branch Obs. (June 6.99-01p10) and the Catalina Sky Survey (CSS) (June 7.31-33p4)
K03F06Y 2003 FY6 (q=0.305 AU, arc=4 opp, H=22.4 ~112m) from LCO Cerro Tololo C (March 29.14-17p5 & 29.31-34p5), LCO Cerro Tololo A (March 29.22-25p10), and LCO Siding Spring A (March 30.54-56p10)
Observation campaigns (NHATS targets, radar support)
K18L00C 2018 LC (arc=6 days, H=25.5 ~27m, NHATS) from Steward Mt. Lemmon Sta. (June 8.27-28p4)
K18K01P 2018 KP1 (arc=20 days, H=25.1 ~32m, NHATS) from Spacewatch 1.8m (June 8.24-25p3)
K18K01D 2018 KD1 (arc=21 days, H=24.5 ~43m, NHATS) from Spacewatch 0.9m (June 8.21-24p3) and Steward Mt. Lemmon Sta. (June 8.37-38p4)
K17M08T 2017 MT8 (arc=2 opp, H=23.2 ~78m, NHATS) from Steward Mt. Lemmon Sta. (June 8.43-44p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K18L00H 2018 LH (arc=5 days, H=24.0 ~54m) from Mt. John Obs. (June 7.41p3), Steward Mt. Lemmon Sta. (June 8.17-18p3 at G=20.9-22.1), and Spacewatch 1.8m (June 8.22p3 at R=21.9-22.3)
K18K03C 2018 KC3 (arc=15 days, H=23.0 ~85m) from Spacewatch 0.9m (June 8.25p3)
K18J02V 2018 JV2 (arc=27 days, H=23.6 ~65m) from Spacewatch 0.9m (June 8.34-35p3)
K18J02J 2018 JJ2 (Q=4.354 AU, arc=29 days, H=24.0 ~54m) from Spacewatch 0.9m (June 8.38p3)
K18J01Y 2018 JY1 (arc=30 days, H=23.5 ~68m) from Spacewatch 0.9m (June 8.20-21p3)
K18J01W 2018 JW1 (arc=32 days, H=22.4 ~112m) from Spacewatch 1.8m (June 8.18-21p3 at R=22.1-6)
K16EF8E 2016 EE158 (arc=2 opp, H=23.9 ~56m) from ARO Westfield (June 6.32-33p2 at V=22.2-5)
J99L01K 1999 LK1 (arc=4 opp, H=22.1 ~129m) from CSS (June 7.29-31p4)
K18K01H 2018 KH1 (arc=21 days, H=21.9 ~141m) from Steward Mt. Lemmon Sta. (June 8.33-36p3)
K18K00L 2018 KL (arc=23 days, H=21.9 ~141m) from Spacewatch 0.9m (June 8.33-34p3)
Observations of other objects
K18L00N 2018 LN (arc=4 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (June 8.33-36p4)
K18L00J 2018 LJ (q=0.351 AU, Q=4.408 AU, arc=5 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (June 8.23-24p3)
K18K03F 2018 KF3 (arc=13 days, H=19.8 ~371m) from Spacewatch 1.8m (June 8.45p3)
K18K03E 2018 KE3 (arc=13 days, H=19.2 ~490m) from Holmes/CTIO (June 7.29p3) and Mt. John Obs. (June 7.62-63p3)
K18K03D 2018 KD3 (arc=14 days, H=21.0 ~214m) from Steward Mt. Lemmon Sta. (June 8.41-42p4 at G=21.5-22.5)
K18K02R 2018 KR2 (arc=16 days, H=19.1 ~513m) from ATLAS Mauna Loa (June 6.57-60p4)
K18K02K 2018 KK2 (Q=4.470 AU, arc=22 days, H=18.3 ~741m) from Spacewatch 0.9m (June 8.17p3)
K18K01M 2018 KM1 (q=0.350 AU, arc=19 days, H=20.8 ~234m) from Spacewatch 0.9m (June 7.22p3)
K18K01G 2018 KG1 (Q=4.276 AU, arc=21 days, H=19.0 ~537m) from Steward Mt. Lemmon Sta. (June 8.27-28p3)
K18K00V 2018 KV (Q=4.391 AU, arc=56 days, H=17.1 ~1.29 km) from CSS (June 7.33-34p3) and Steward Mt. Lemmon Sta. (June 8.41-42p4)
K18J05E 2018 JE5 (arc=24 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (June 8.42-43p3)
K18J03A 2018 JA3 (arc=25 days, H=21.4 ~178m) from Mt. John Obs. (June 7.38-39p4)
K18J01P 2018 JP1 (arc=31 days, H=20.8 ~234m) from Spacewatch 0.9m (June 8.35-36p3)
K18J00F 2018 JF (arc=35 days, H=21.4 ~178m) from Spacewatch 0.9m (June 8.25-28p3)
K18H03T 2018 HT3 (Q=5.437 AU, arc=46 days, H=18.4 ~708m) from Holmes/CTIO (June 7.32p2) and Mt. John Obs. (June 7.61-62p4)
K18G05A 2018 GA5 (Q=4.921 AU, arc=56 days, H=18.3 ~741m) from Steward Mt. Lemmon Sta. (June 8.44-45p4)
K18G00L 2018 GL (arc=63 days, H=20.4 ~282m) from ARO Westfield (June 7.11-14p3 at V=22.3-7)
K18F05O 2018 FO5 (arc=79 days, H=20.5 ~269m) from Spacewatch 1.8m (June 8.16-17p3)
K18F05E 2018 FE5 (Q=4.157 AU, arc=78 days, H=20.6 ~257m) from Mt. John Obs. (June 7.33-34p4)
K18D04J 2018 DJ4 (arc=101 days, H=21.6 ~162m) from Mt. John Obs. (June 7.57-58p4)
K18A12P 2018 AP12 (Q=4.423 AU, arc=145 days, H=20.9 ~224m) from Spacewatch 0.9m (June 8.44p3)
K17Y05F 2017 YF5 (arc=166 days, H=19.6 ~407m) from Mt. John Obs. (June 7.37-38p3)
K17W14H 2017 WH14 (arc=2 opp, H=18.0 ~851m) from MLS (June 7.28-30p4) and Steward Mt. Lemmon Sta. (June 8.41-42p3)
K17G05T 2017 GT5 (arc=2 opp, H=21.3 ~186m) from Steward Mt. Lemmon Sta. (June 8.39-40p4)
K17C32O 2017 CO32 (q=0.231 AU, arc=2 opp, H=19.4 ~446m) from Mt. John Obs. (June 7.34-35p4)
K16N22T 2016 NT22 (q=0.162 AU, arc=3 opp, H=19.5 ~426m) from Mt. John Obs. (June 7.56-57p4)
K15Y10P 2015 YP10 (arc=3 opp, H=20.2 ~309m) from ARO Westfield (June 6.22-26p4 at V=21.9-22.2)
K14Y15P 2014 YP15 (arc=2 opp, H=19.9 ~355m) from MLS (June 7.16-18p4)
K14U00V 2014 UV (i=36.0°, arc=2 opp, H=20.5 ~269m) from ARO Westfield (June 6.25-29p3 at V=22.1-3)
K14J25M 2014 JM25 (arc=3 opp, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (June 8.36-38p4)
K13Q10H 2013 QH10 (Q=4.789 AU, arc=2 opp, H=18.5 ~676m) from CSS (June 7.21-22p4)
K12O00Z 2012 OZ (arc=3 opp, H=20.1 ~323m) from ARO Westfield (June 6.23-26p3 at V=22.6-23.2)
K11R00F 2011 RF (arc=4 opp, H=20.5 ~269m) from Spacewatch 0.9m (June 8.39p3)
K11G62A 2011 GA62 (arc=4 opp, H=18.9 ~562m) from Mt. John Obs. (June 7.59p4)
K09SA4K 2009 SK104 (Q=4.457 AU, arc=2 opp, H=19.3 ~467m) from Mt. John Obs. (June 8.40p3)
K09H44W 2009 HW44 (i=41.1°, Q=4.279 AU, arc=3 opp, H=17.5 ~1.07 km) from Mt. John Obs. (June 8.35-36p3)
K04P27Y 2004 PY27 (arc=3 opp, H=20.7 ~245m) from Mt. John Obs. (June 7.58-60p6)
K04L00B 2004 LB (i=37.3°, arc=2 opp, H=21.6 ~162m) from ATLAS Mauna Loa (June 6.31-34p4), Mt. John Obs. (June 7.40p3), and Arcadia Obs. (June 7.41-47p5)
J99R02V 1999 RV2 (arc=3 opp, H=18.7 ~616m) from Spacewatch 0.9m (June 8.42p2)
p8678 518678 2008 UZ94 from MLS (June 7.44-45p4)
p8646 518646 2008 QD1 from Purple Mtn. Obs. Xuyi Station (June 6.65-68p2)
p8640 518640 2008 KZ5 from CSS (June 7.35-37p4)
p8635 518635 2008 HO3 from CSS (June 7.33-35p4)
p6976 516976 2012 HM1 from CSS (June 7.33-35p4)
o8796 508796 2000 KN44 from Xuyi Sta. (June 6.65-67p2)
k7309 467309 1996 AW1 from ATLAS Mauna Loa (June 7.50-54p4)
h6771 436771 2012 JG11 from MLS (June 7.37-38p3)
S5339 285339 1999 JR6 from PS1 (June 7.27-30p3)
P3062 253062 2002 TC70 from Spacewatch 0.9m (June 8.41p3)
I6822 186822 2004 FE31 from CSS (June 7.27-28p3)
G2980 162980 2001 RR17 from MLS (June 7.37-39p4)
F9533 159533 2001 HH31 from Xuyi Sta. (June 6.57-60p3)
F4268 154268 2002 RM129 from CSS (June 7.35-37p4)
D8937 138937 2001 BK16 from MLS (June 7.27-28p4)
D6839 136839 1997 WT22 from Spacewatch 0.9m (June 7.29-32p3)
86666 86666 2000 FL10 from CSS (June 7.33-35p4)
85628 85628 1998 KV2 from Xuyi Sta. (June 6.56-59p3)
85490 85490 1997 SE5 from Xuyi Sta. (June 6.56-57p2)
66391 66391 1999 KW4 from Olmen Obs. (June 5.98-99p3) and Fabra Obs. (June 7.84p7)
53435 53435 1999 VM40 from PS1 (June 7.28-31p3)
36183 36183 1999 TX16 from Xuyi Sta. (June 6.56-58p3)
25916 25916 2001 CP44 from ATLAS Mauna Loa (June 7.49-53p15)
08037 8037 1993 HO1 from CSS (June 7.18-20p3)
02061 2061 Anza (1960 UA) from ARO Westfield (June 6.34-38p7)
01866 1866 Sisyphus (1972 XA) from ATLAS Haleakala (June 7.30-33p4)
01627 1627 Ivar (1929 SH) from Olmen Obs. (June 4.87-88p3)

Observers on 8 June '18

A total of 34 observers appear in today's MPECs.

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2018-L29 -- 2004 LB
`H21`	Astronomical Research Obs. Westfield in Illinois, 7 in MPEC 2018-L29 -- 2018 LM, 2018 GL, 2016 EE158, 2015 YP10, 2014 UV, 2012 OZ, 2061
`T05`	ATLAS Haleakala in Hawaii, 1 in MPEC 2018-L29 -- 1866
`T08`	ATLAS Mauna Loa in Hawaii, 4 in MPEC 2018-L29 -- 2018 KR2, 2004 LB, 467309, 25916
`I47`	Auger Obs. in Argentina, 1 in MPEC 2018-L35 -- 2018 KB4
`703`	Catalina Sky Survey (CSS) in Arizona, 11 in MPEC 2018-L29 -- 2018 KV, 2018 EJ4, 2013 QH10, 1999 LK1, 86666, 518640, 518635, 516976, 186822, 154268, 8037
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2018-L29 & 2018-L30 -- 2018 LK2, 2018 KE3, 2018 HT3
`006`	Fabra Obs. in Spain, 1 in MPEC 2018-L29 -- 66391
`E105`	Richard Miles in England via Faulkes Telescope South in New South Wales, 1 in MPEC 2018-L35 -- 2018 KB4
`I114`	Joseph Masiero in southern California via Gemini South Obs. in Chile, 1 in MPEC 2018-L30 -- 2018 LK2
`J77`	Golden Hill Obs. in England, 1 in MPEC 2018-L35 -- 2018 KB4
`J95`	Great Shefford Obs. in England, 1 in MPEC 2018-L31 -- 2018 LL2
`Q621`	Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 2 in MPECs 2018-L35 & 2018-L36 -- P/2018 L1, 2018 KB4
`P93`	JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2018-L31 -- 2018 LL2
`W85`	LCO Cerro Tololo A in Chile, 1 in MPEC 2018-L29 -- 2003 FY6
`W87`	LCO Cerro Tololo C in Chile, 1 in MPEC 2018-L29 -- 2003 FY6
`Q63`	LCO Siding Spring A in New South Wales, 1 in MPEC 2018-L29 -- 2003 FY6
`K91`	LCO Sutherland A in South Africa, 1 in MPEC 2018-L35 -- 2018 KB4
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2018-L35 & 2018-L36 -- P/2018 L1, 2018 KB4
`711`	McDonald Obs. in Texas, 1 in MPEC 2018-L32 -- 2018 LN2
`474`	Mt. John Obs. in New Zealand, 16 in MPECs 2018-L29 & 2018-L30 -- 2018 LK2, 2018 LH, 2018 KE3, 2018 JZ1, 2018 JA3, 2018 HT3, 2018 FE5, 2018 DJ4, 2017 YF5, 2017 CO32, 2016 NT22, 2011 GA62, 2009 SK104, 2009 HW44, 2004 PY27, 2004 LB
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 10 in MPECs 2018-L29, 2018-L31, 2018-L32, 2018-L33 & 2018-L36 -- 2018 LN2, 2018 LM2, 2018 LL2, P/2018 L1, 2017 WH14, 2014 YP15, 518678, 436771, 162980, 138937
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2018-L29 -- 2018 EJ4
`C23`	Olmen Obs. in Belgium, 2 in MPEC 2018-L29 -- 66391, 1627
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2018-L29, 2018-L31, 2018-L34, 2018-L35 & 2018-L36 -- 2018 LL2, P/2018 L1, 2018 KB4, 2013 JG29, 53435, 285339
`D29`	Purple Mtn. Obs. Xuyi Station in China, 6 in MPEC 2018-L29 -- 85628, 85490, 518646, 508796, 36183, 159533
`104`	San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2018-L35 -- 2018 KB4
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2018-L36 -- P/2018 L1
`G40(`	program code "(" (17) via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPECs 2018-L35 & 2018-L36 -- P/2018 L1, 2018 KB4
`G409`	B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-L36 -- P/2018 L1
`691`	Spacewatch 0.9m telescope in Arizona, 19 in MPECs 2018-L29 & 2018-L36 -- 2018 LM, 2018 LE1, 2018 LD1, P/2018 L1, 2018 KM1, 2018 KL, 2018 KK2, 2018 KD1, 2018 KC3, 2018 JY1, 2018 JV2, 2018 JP1, 2018 JJ2, 2018 JF, 2018 AP12, 2011 RF, 1999 RV2, 253062, 136839
`291`	Spacewatch 1.8m telescope in Arizona, 6 in MPEC 2018-L29 -- 2018 LH, 2018 LB1, 2018 KP1, 2018 KF3, 2018 JW1, 2018 FO5
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 22 in MPECs 2018-L29, 2018-L31, 2018-L32, 2018-L33, 2018-L35 & 2018-L36 -- 2018 LN2, 2018 LN, 2018 LM2, 2018 LM, 2018 LL2, 2018 LJ, 2018 LH, 2018 LC, P/2018 L1, 2018 KV, 2018 KH1, 2018 KG1, 2018 KD3, 2018 KD1, 2018 KB4, 2018 KB1, 2018 JE5, 2018 GA5, 2017 WH14, 2017 MT8, 2017 GT5, 2014 JM25
`L01`	Visnjan Obs., 3 in MPECs 2018-L31, 2018-L32 & 2018-L35 -- 2018 LN2, 2018 LL2, 2018 KB4
`C51`	WISE in Earth polar orbit, 1 in MPEC 2018-L30 -- 2018 LK2

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 8 June '18

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
0000NNN000 Object	Risk Monitor	When Noted UTC	0000T0000 Year Range	VI #	000NN00 Prob Cum	T0000 PS Cum	T0000 PS Max	T S	Notes for Today's Latest Risk Assessments

2018 LK2	JPL Sentry	2005	2029-2110	27	1.310641e-07	-4.35	-4.90	0	JPL: Computed at 12:30 today Pacific time based on 20 observations spanning 5.4743 days (2018-Jun-02.93056 to 2018-Jun-08.40482). Diameter approximately 0.340 km. from weighted mean H=20.00.

2018 LE1	JPL Sentry	1441	2066-2103	11	6.56045e-06	-6.70	-7.27	0	JPL: Computed at 07:35 today Pacific time based on 21 observations spanning 2.7914 days (2018-Jun-05.39422 to 2018-Jun-08.1856). Diameter approximately 0.011 km. from weighted mean H=27.45.
2018 LE1	NEODyS	1441	2066-2117	26	4.24e-06	-6.98	-7.14	0	NEODyS: "Based on 19 optical observations (of which 0 are rejected as outliers) from 2018-06-05.395 to 2018-06-07.365."

2018 LD1	JPL Sentry	1441	2061-2089	3	1.85071e-07	-7.37	-7.38	0	JPL: Computed at 07:31 today Pacific time based on 21 observations spanning 2.8544 days (2018-Jun-05.34064 to 2018-Jun-08.19505). Diameter approximately 0.018 km. from weighted mean H=26.38.
2018 LD1	NEODyS	1441	2061-2116	11	1.93e-07	-7.49	-7.82	0	NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2018-06-05.341 to 2018-06-07.324."

2018 LB1	JPL Sentry	1626	2032-2063	2	8.209208e-05	-1.26	-1.26	1	JPL #2 for the day: Computed at 07:28 today Pacific time based on 21 observations spanning 19.888 days (2018-May-19.425541 to 2018-Jun-08.31341). Diameter approximately 0.320 km. from weighted mean H=20.13.
2018 LB1	NEODyS	1626	2032-2063	5	1.85e-05	-1.96	-1.96	0	NEODyS #2 for the day: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2018-05-19.426 to 2018-06-08.314."

2018 LM	JPL Sentry	1441	2112-2116	2	7.738e-07	-6.67	-6.79	0	JPL: Computed at 07:37 today Pacific time based on 49 observations spanning 3.9503 days (2018-Jun-04.25437 to 2018-Jun-08.20464). Diameter approximately 0.032 km. from weighted mean H=25.15.
2018 LM	NEODyS	1441	2111-2116	2	6.83e-08	-7.71	-7.71	0	NEODyS: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2018-06-04.255 to 2018-06-07.178."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology on 8 June '18

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

2358	Grabbed MPEC 2018-L36 - Comet P/2018 L1 (Panstarrs) - see above
2130	Grabbed MPEC 2018-L35 - 2018 KB4 - see above
2030	Grabbed MPEC 2018-L34 - 2013 JG29 - see above
2005	Noted that JPL Sentry has posted 2018 LK2 as an impact risk - see above
1900	Grabbed MPEC 2018-L33 - 2018 LM2 - see above
1832	Grabbed MPEC 2018-L30 - 2018 LK2 - see above Grabbed MPEC 2018-L31 - 2018 LL2 - see above Grabbed MPEC 2018-L32 - 2018 LN2 - see above
1823	Generated Traffic Report
1626	Noted that JPL Sentry has updated its 2018 LB1 risk assessment - see above Noted that NEODyS has updated its 2018 LB1 risk assessment - see above
1441	Noted that JPL Sentry has posted 2018 LB1 as an impact risk - see above Noted that NEODyS has posted 2018 LB1 as an impact risk - see above Noted that JPL Sentry has updated its 2018 LD1 risk assessment - see above Noted that NEODyS has posted 2018 LD1 as an impact risk - see above Noted that JPL Sentry has updated its 2018 LE1 risk assessment - see above Noted that NEODyS has posted 2018 LE1 as an impact risk - see above Noted that JPL Sentry has reposted 2018 LM as an impact risk - see above Noted that NEODyS has updated its 2018 LM risk assessment - see above Grabbed MPEC 2018-L29 - Daily Orbit Update - see above

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