2018-06-10 Tracking News

Contents on 10 June '18

Traffic Report -- five objects
IAU Minor Planet Center
- NEOCP Activity -- 20 listings
- New MPECs -- five MPECs
Observers -- 36 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 2105 UTC on 10 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 10 June '18

Five objects reported inside ten LD

Five visitors are reported moving less than ten lunar distances (LD) from our home world today. Nearest is newly announced 2018 LR2, which is heading out from 3.93 to 4.52 LD, while radar/NHATS target 2018 EJ4 comes its closest to our planet on this passage -- 5.56 LD at 1916 UTC.

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
1.54 LD June 6	2018 LU2	16 m	7.83 to 9.98 LD	June 1 - 11	NEW, NHATS target - MPEC, DOU
1.57 LD June 14	2018 LD1	18 m	9.15 from 11.59 LD	today - June 18	enters ten LD, risk - DOU

3.93 LD yesterday	2018 LR2	25 m	3.93 to 4.52 LD	June 5 - 14	NEW - MPEC

5.56 LD today	2018 EJ4	186 m	5.56 LD	June 4 - 16	radar/NHATS target, Earth closest at 1916 UTC - DOU
8.96 LD tomorrow	2015 DP155	162 m	8.96 from 9.05 LD	June 6 - 15	NHATS target - DOU

Approaching
7.62 LD June 15	2018 LK	150 m	15.54 from 18.03 LD	June 13 - 18	DOU

This report was generated at 1851 UTC with the discoveries announced late yesterday of outbound objects 2018 LR2 (MPEC) and 2018 LU2 (MPEC, DOU). We probably will also be adding 2018 LQ2 (MPEC, DOU) to this reporting. It is currently calculated with some uncertainty to pass Earth at 9.3 LD on August 27th. Today's DOU MPEC has follow-up for five objects in the above active traffic table and for departed objects 68347 2001 KB67 and risk-listed 2018 LE1 and 2018 LM.

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 10 June '18

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, ten were "one nighters." So far The Tracking News has counted a total of 32 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 June '18

Minor Planet Electronic Circulars

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

MPEC 2018-L47 time-stamped "12:03 UT" - Daily Orbit Update - see below
MPEC 2018-L48 time-stamped "16:53 UT" - 2018 LC3 - see below
MPEC 2018-L49 time-stamped "16:57 UT" - 2018 LD3 - see below
MPEC 2018-L50 time-stamped "17:00 UT" - 2018 LE3 - see below
MPEC 2018-L51 time-stamped "17:03 UT" - 2018 LF3

MPEC 2018-L51 - "17:03 UT" - 2018 LF3

K18L03F 2018 LF3 (small asteroid, H=25.7 ~25m) was picked up at 0945 UT on 8 June by Pan-STARRS 1 (PS1), observing it at June 8.41-44p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (June 9.30-31p4 & 10.22p4).

MPEC 2018-L50 - "17:00 UT" - 2018 LE3

K18L03E 2018 LE3 (Q=4.110 AU, H=21.3 ~186m) was picked up at 0826 UT on 8 June by the Catalina Sky Survey (CSS), observing it at June 8.35-37p3. This detection was confirmed by Steward Mt. Lemmon Sta. (June 8.42-46p8, 9.18p4 & 10.38p4), Bernezzo Obs. (June 8.91-93p3), Great Shefford Obs. (June 9.02-03p3), Astronomical Research Obs. Westfield (June 9.30-31p3), Sandlot Obs. (June 9.33-34p3), Sormano Obs. (June 9.85p3), Visnjan Obs. (June 9.98-99p3), and Schiaparelli Obs. (June 10.01-03p4).

MPEC 2018-L49 - "16:57 UT" - 2018 LD3

K18L03D 2018 LD3 (small asteroid, H=23.8 ~59m) was picked up at 0805 UT on 8 June by the Mt. Lemmon Survey (MLS), observing it at June 8.34-35p4 and 8.42p4. This detection was confirmed by PS1 (June 8.51-52p2), the Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) (June 9.26-27p3), Visnjan Obs. (June 10.01-02p2), and Steward Mt. Lemmon Sta. (June 10.34p4).

MPEC 2018-L48 - "16:53 UT" - 2018 LC3

K18L03C 2018 LC3 (i=44.3°, H=18.7 ~616m) was picked up at 1031 UT on 7 June by MLS, observing it at June 7.44-46p8 and 8.41-42p4. This detection was confirmed by Visnjan Obs. (June 10.05p2) and Steward Mt. Lemmon Sta. (June 10.45p4).

<< DOU on 10 June '18 >> MPEC 2018-L47 - "12:03 UT" - Daily Orbit Update

Observations of risk-listed objects
K18L01E 2018 LE1 (small asteroid, arc=5 days, H=27.4 ~11m, close passer, NHATS target) from the Spacewatch 0.9m telescope (June 10.17-18p3) and CSS-Kuiper (June 10.21-22p3 at G=21.9-22.6)
K18L01D 2018 LD1 (small asteroid, arc=5 days, H=26.2 ~19m, close passer) from Spacewatch 0.9m (June 10.19-20p3) and Steward Mt. Lemmon Sta. (June 10.24-25p4)
K18L01B 2018 LB1 (Q=4.569 AU, arc=21 days, H=20.2 ~309m) from the Spacewatch 1.8m telescope (June 9.17-18p3)
K18L00M 2018 LM (small asteroid, arc=6 days, H=25.1 ~32m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (June 10.15-16p4) and Spacewatch 0.9m (June 10.16-17p3)
K17K03B 2017 KB3 (small asteroid, arc=13 days, H=25.0 ~34m) from UH/Tholen NEO Follow-Up 2.24m Telescope (2017 May 29.32p2 at G=22.35-56 & 2017 May 30.38p1 at G=23.74)
Observations of recently (no longer) risk-listed objects
K18K01B 2018 KB1 (arc=24 days, H=20.7 ~245m) from Steward Mt. Lemmon Sta. (June 10.40-41p3)
K18J05D 2018 JD5 (arc=26 days, H=18.9 ~562m) from Spacewatch 0.9m (June 10.44-45p3) and Steward Mt. Lemmon Sta. (June 10.45p3)
Observations of close-passing objects
K18L02U 2018 LU2 (arc=3 days, H=26.6 ~16m, NHATS target) from Visnjan Obs. (June 9.99p3)
K18L00K 2018 LK (arc=54 days, H=21.8 ~148m) from LCO Sutherland A (June 8.11-14p8) and Peschiera del Garda Obs. (June 9.93-94p4)
K18E04J 2018 EJ4 (arc=88 days, H=21.3 ~186m, NHATS target, radar support) from Peschiera del Garda Obs. (June 9.85p10) and Povegliano Veronese Obs. (June 9.91p4)
K15DF5P 2015 DP155 (arc=2 opp, H=21.4 ~178m, NHATS target) from Peschiera del Garda Obs. (June 9.87-88p6) and Povegliano Veronese Obs. (June 9.92-93p4)
68347 68347 2001 KB67 (radar support) from N.V. Maigurova via Nikolaev Obs. (May 29.03-04p4, 31.00-02p8, June 1.93-95p10 & 2.94-97p10), Sabadell Obs. (May 30.92-94p4), Northolt Branch Obs. (May 30.98-02p15, June 1.95-97p7 & 5.99-01p10), Fabra Obs. (June 1.89p7 & 2.92-93p8), North Obs. (June 3.02-04p6 & 3.91-93p4), Rand II Obs. (June 3.17-18p6), CSS (June 3.35-37p4 & 9.34-36p4), ATLAS Mauna Loa (June 4.50-54p4), program code "'" (16) via Slooh.com Canary Islands Obs. (June 5.11-15p3 & 5.97-02p3), Mulheim-Ruhr Obs. (June 5.89-95p5 & 6.89-92p4), Squirrel Valley Obs. (June 6.11-12p6), ATLAS Haleakala (June 6.49-52p4), and MLS (June 8.31p1)
Observation campaigns (NHATS targets, radar support)
K18L02Q 2018 LQ2 (arc=5 days, H=24.7 ~39m, NHATS) from Sormano Obs. (June 9.90-91p2), CSS (June 10.33-35p4), and Steward Mt. Lemmon Sta. (June 10.40-41p3)
K18L02M 2018 LM2 (arc=4 days, H=24.2 ~49m, NHATS) from Steward Mt. Lemmon Sta. (June 10.16-17p4)
K18L01J 2018 LJ1 (arc=5 days, H=26.5 ~17m, NHATS) from Steward Mt. Lemmon Sta. (June 10.23-24p3) and Spacewatch 0.9m (June 10.28-29p3)
K18L01C 2018 LC1 (arc=5 days, H=24.7 ~39m, NHATS) from Steward Mt. Lemmon Sta. (June 10.25-26p4)
K18L00C 2018 LC (arc=8 days, H=25.4 ~28m, NHATS) from Steward Mt. Lemmon Sta. (June 10.20p4)
K18G01L 2018 GL1 (arc=62 days, H=23.7 ~62m, NHATS) from Steward Mt. Lemmon Sta. (June 10.39-40p3)
K17N00K 2017 NK (arc=2 opp, H=21.2 ~195m, NHATS) from Steward Mt. Lemmon Sta. (June 10.42-45p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K18L02T 2018 LT2 (arc=4 days, H=23.6 ~65m) from Spacewatch 0.9m (June 10.24-27p3)
K18L02S 2018 LS2 (arc=5 days, H=22.3 ~117m) from Spacewatch 0.9m (June 10.22-23p3)
K18L02N 2018 LN2 (arc=4 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (June 10.25-26p3)
K18L01G 2018 LG1 (arc=4 days, H=23.4 ~71m) from Steward Mt. Lemmon Sta. (June 10.17p4)
K18L01F 2018 LF1 (arc=5 days, H=24.6 ~41m) from Steward Mt. Lemmon Sta. (June 10.35-36p4)
K18L00G 2018 LG (arc=8 days, H=22.7 ~98m) from Steward Mt. Lemmon Sta. (June 10.19p4)
K18K03C 2018 KC3 (arc=17 days, H=23.1 ~81m) from Steward Mt. Lemmon Sta. (June 10.30p4) and Spacewatch 0.9m (June 10.36-37p3)
K18K00H 2018 KH (arc=25 days, H=24.5 ~43m) from CSS-Kuiper (June 10.34-35p4)
K18J02V 2018 JV2 (arc=29 days, H=23.7 ~62m) from Steward Mt. Lemmon Sta. (June 10.35p4)
K18J02J 2018 JJ2 (Q=4.355 AU, arc=31 days, H=24.0 ~54m) from Steward Mt. Lemmon Sta. (June 10.37p3)
K18J01Y 2018 JY1 (arc=32 days, H=23.5 ~68m) from Steward Mt. Lemmon Sta. (June 10.36p4)
K18K01H 2018 KH1 (arc=23 days, H=21.9 ~141m) from Steward Mt. Lemmon Sta. (June 10.29-30p4)
Observations of other objects
K18L02P 2018 LP2 (arc=5 days, H=20.6 ~257m) from Spacewatch 0.9m (June 10.23-24p3)
K18L02L 2018 LL2 (Q=4.222 AU, arc=16 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (June 10.19-20p4)
K18L01H 2018 LH1 (i=42.7°, Q=4.897 AU, arc=20 days, H=19.7 ~389m) from Spacewatch 0.9m (June 10.20-21p3) and Steward Mt. Lemmon Sta. (June 10.32-33p4 at G=21.3-22.4)
K18L00N 2018 LN (arc=6 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (June 10.24-25p4)
K18L00J 2018 LJ (q=0.351 AU, Q=4.437 AU, arc=7 days, H=21.2 ~195m) from Steward Mt. Lemmon Sta. (June 10.16p4)
K18K03F 2018 KF3 (arc=15 days, H=19.8 ~371m) from Steward Mt. Lemmon Sta. (June 10.38p4) and Spacewatch 0.9m (June 10.43-44p3)
K18K03D 2018 KD3 (arc=16 days, H=21.0 ~214m) from CSS-Kuiper (June 10.32-33p4) and Spacewatch 0.9m (June 10.37-39p3)
K18K02M 2018 KM2 (arc=20 days, H=20.4 ~282m) from Steward Mt. Lemmon Sta. (June 10.31-32p3)
K18K02L 2018 KL2 (arc=20 days, H=21.7 ~155m) from Steward Mt. Lemmon Sta. (June 10.30-31p4)
K18K01U 2018 KU1 (arc=22 days, H=20.8 ~234m) from CSS-Kuiper (June 10.31-32p3)
K18K01M 2018 KM1 (q=0.350 AU, arc=22 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (June 10.33p4)
K18K01G 2018 KG1 (Q=4.276 AU, arc=23 days, H=19.0 ~537m) from Steward Mt. Lemmon Sta. (June 10.26-28p4)
K18K00V 2018 KV (Q=4.391 AU, arc=58 days, H=17.1 ~1.29 km) from CSS (June 9.32-33p4) and Steward Mt. Lemmon Sta. (June 10.35-36p4)
K18J05E 2018 JE5 (arc=26 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (June 10.37p4)
K18J02D 2018 JD2 (i=51.0°, q=0.214 AU, arc=32 days, H=18.9 ~562m) from Steward Mt. Lemmon Sta. (June 10.18-19p4)
K18J01S 2018 JS1 (Q=4.378 AU, arc=58 days, H=20.3 ~295m) from Steward Mt. Lemmon Sta. (June 10.32p4)
K18J01Q 2018 JQ1 (arc=33 days, H=21.4 ~178m) from Steward Mt. Lemmon Sta. (June 10.33-35p4)
K18J01E 2018 JE1 (arc=34 days, H=19.9 ~355m) from Steward Mt. Lemmon Sta. (June 10.18-19p4)
K18H03S 2018 HS3 (arc=45 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (June 10.28-29p4) and Spacewatch 0.9m (June 10.30-31p3)
K18F01S 2018 FS1 (arc=84 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (June 10.27-28p4)
K18B02Y 2018 BY2 (arc=158 days, H=20.5 ~269m) from Steward Mt. Lemmon Sta. (June 10.31p4)
K17W14H 2017 WH14 (arc=2 opp, H=18.0 ~851m) from CSS (June 9.32-33p4)
K16J24J 2016 JJ24 (q=0.317 AU, arc=3 opp, H=19.9 ~355m) from CSS-Kuiper (June 10.35-36p4 at G=22.8-23.0)
K12P06G 2012 PG6 (q=0.322 AU, arc=4 opp, H=20.3 ~295m) from Spacewatch 0.9m (June 10.45-46p3)
K05E29Z 2005 EZ29 (arc=3 opp, H=20.3 ~295m) from ARO Westfield (June 9.33-35p3 at V=22.1-3)
K02P80H 2002 PH80 (arc=4 opp, H=19.5 ~426m) from Spacewatch 0.9m (June 10.46p3)
J99L01W 1999 LW1 (arc=3 opp, H=20.4 ~282m) from ATLAS Mauna Loa (June 9.51-54p4)
p6976 516976 2012 HM1 from CSS (June 9.32-34p4)
p4652 514652 2005 SC71 from CSS (June 9.28-29p3)
p3182 513182 2005 CV38 from CSS (June 9.28-29p3)
o8767 508767 1993 BD2 from Oukaimeden Obs. (June 7.01-04p4)
k8730 468730 2010 MN51 from MLS (June 9.42-43p3)
j7212 457212 2008 JR26 from MLS (June 9.42-43p3)
j0648 450648 2006 UC63 from MLS (June 9.31-33p4) and CSS (June 9.32-33p4)
Y1050 341050 2007 HZ from ARO Westfield (June 9.34-37p3 at V=22.0-22.4)
X7084 337084 1998 SE36 from MLS (June 9.27-28p4) and CSS (June 9.28-29p4)
R8327 278327 2007 HA59 from ATLAS Mauna Loa (June 9.29-31p7)
P3062 253062 2002 TC70 from Spacewatch 0.9m (June 10.40-41p3)
J4126 194126 2001 SG276 from JBL Obs. (May 14.46p1, 14.50p1 & 14.55p1)
I6822 186822 2004 FE31 from Oukaimeden Obs. (June 6.87-90p4)
G3758 163758 2003 OS13 from MLS (June 9.42-44p4)
G2168 162168 1999 GT6 from MASTER IAC Obs. (June 8.16p4 & 8.21p2)
F3957 153957 2002 AB29 from ATLAS Mauna Loa (June 9.49-51p4)
D9289 139289 2001 KR1 from ATLAS Mauna Loa (May 23.58p1, 27.55-59p4, June 1.48-52p4 & 5.47-49p3), MLS (May 24.37p1 & June 4.36-38p4), ATLAS Haleakala (May 25.59-61p3), Castelmartini Obs. (May 25.99p3), North Obs. (May 27.93-94p3), Maigurova/Nikolaev Obs. (May 29.97-99p8, 30.95-97p9, June 1.91-93p8 & 2.92-94p9), Landehen Obs. (June 1.93p2), CSS (June 2.40-41p3 & 8.33-35p4), Squirrel Valley Obs. (June 6.07-08p6), and Frasso Sabino Obs. (June 9.90p6)
D8937 138937 2001 BK16 from CSS (June 9.28-29p4)
D8847 138847 2000 VE62 from JBL Obs. (April 9.48p1, 9.52p1, 9.57p1, 9.61p1, 9.66p1, 9.70p1, 10.52p1, 10.57p1, 10.61p1 & 10.66p1) and ATLAS Mauna Loa (June 9.40-43p8)
85989 85989 1999 JD6 from CSS (June 9.23-25p3)
66391 66391 1999 KW4 from CSS (June 9.28-29p4)
66008 66008 1998 QH2 from ATLAS Mauna Loa (June 9.24-26p4)
54401 54401 2000 LM from CSS (June 9.41-42p3)
37655 37655 Illapa (1994 PM) from MLS (June 9.27-28p3)
24761 24761 Ahau (1993 BW2) from CSS (June 9.30-31p3) and MLS (June 9.31-32p4)
09856 9856 1991 EE from ATLAS Mauna Loa (June 9.27-31p4)
04954 4954 Eric (1990 SQ) from SONEAR (June 9.21-23p3)
03752 3752 Camillo (1985 PA) from ATLAS Mauna Loa (June 9.33-36p4)
02135 2135 Aristaeus (1977 HA) from ARO Westfield (June 9.34-35p2 at V=22.0-22.1)
01866 1866 Sisyphus (1972 XA) from ATLAS Mauna Loa (June 9.30-32p4)
01580 1580 Betulia (1950 KA) from ATLAS Mauna Loa (June 9.27-29p6)
01036 1036 Ganymed (1924 TD) from ATLAS Haleakala (June 9.28-31p4)

Observers on 10 June '18

A total of 36 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 4 in MPECs 2018-L47 & 2018-L50 -- 2018 LE3, 2005 EZ29, 341050, 2135
`T05`	ATLAS Haleakala in Hawaii, 3 in MPEC 2018-L47 -- 68347, 139289, 1036
`T08`	ATLAS Mauna Loa in Hawaii, 11 in MPEC 2018-L47 -- 1999 LW1, 68347, 66008, 278327, 153957, 139289, 138847, 9856, 3752, 1866, 1580
`C77`	Bernezzo Obs. in Italy, 1 in MPEC 2018-L50 -- 2018 LE3
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2018-L47 -- 139289
`703`	Catalina Sky Survey (CSS) in Arizona, 16 in MPECs 2018-L47 & 2018-L50 -- 2018 LQ2, 2018 LE3, 2018 KV, 2017 WH14, 85989, 68347, 66391, 54401, 516976, 514652, 513182, 450648, 337084, 24761, 139289, 138937
`V06`	Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 6 in MPECs 2018-L47 & 2018-L49 -- 2018 LE1, 2018 LD3, 2018 KU1, 2018 KH, 2018 KD3, 2016 JJ24
`006`	Fabra Obs. in Spain, 1 in MPEC 2018-L47 -- 68347
`157`	Frasso Sabino Obs. in Italy, 1 in MPEC 2018-L47 -- 139289
`J95`	Great Shefford Obs. in England, 1 in MPEC 2018-L50 -- 2018 LE3
`Q67`	JBL Obs., 2 in MPEC 2018-L47 -- 194126, 138847
`Z43`	Landehen Obs., 1 in MPEC 2018-L47 -- 139289
`K91`	LCO Sutherland A in South Africa, 1 in MPEC 2018-L47 -- 2018 LK
`Z22`	MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2018-L47 -- 162168
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 11 in MPECs 2018-L47, 2018-L48 & 2018-L49 -- 2018 LD3, 2018 LC3, 68347, 468730, 457212, 450648, 37655, 337084, 24761, 163758, 139289
`628`	Mulheim-Ruhr Obs. in Germany, 1 in MPEC 2018-L47 -- 68347
`0895`	N.V. Maigurova via Nikolaev Obs. in Ukraine, 2 in MPEC 2018-L47 -- 68347, 139289
`J69`	North Obs. in England, 2 in MPEC 2018-L47 -- 68347, 139289
`Z80`	Northolt Branch Obs. in England, 1 in MPEC 2018-L47 -- 68347
`J43`	Oukaimeden Obs. in Morocco, 2 in MPEC 2018-L47 -- 508767, 186822
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 2 in MPECs 2018-L49 & 2018-L51 -- 2018 LF3, 2018 LD3
`A53`	Peschiera del Garda Obs. in Italy, 3 in MPEC 2018-L47 -- 2018 LK, 2018 EJ4, 2015 DP155
`A48`	Povegliano Veronese Obs. in Italy, 2 in MPEC 2018-L47 -- 2018 EJ4, 2015 DP155
`W71`	Rand II Obs. in New York, 1 in MPEC 2018-L47 -- 68347
`619`	Sabadell Obs. in Spain, 1 in MPEC 2018-L47 -- 68347
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2018-L50 -- 2018 LE3
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2018-L50 -- 2018 LE3
`G40'`	program code "'" (16) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-L47 -- 68347
`Y00`	SONEAR in Brazil, 1 in MPEC 2018-L47 -- 4954
`587`	Sormano Obs. in Italy, 2 in MPECs 2018-L47 & 2018-L50 -- 2018 LQ2, 2018 LE3
`691`	Spacewatch 0.9m telescope in Arizona, 16 in MPEC 2018-L47 -- 2018 LT2, 2018 LS2, 2018 LP2, 2018 LM, 2018 LJ1, 2018 LH1, 2018 LE1, 2018 LD1, 2018 KF3, 2018 KD3, 2018 KC3, 2018 JD5, 2018 HS3, 2012 PG6, 2002 PH80, 253062
`291`	Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2018-L47 -- 2018 LB1
`W34`	Squirrel Valley Obs. in North Carolina, 2 in MPEC 2018-L47 -- 68347, 139289
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 42 in MPECs 2018-L47, 2018-L48, 2018-L49, 2018-L50 & 2018-L51 -- 2018 LQ2, 2018 LN2, 2018 LN, 2018 LM2, 2018 LM, 2018 LL2, 2018 LJ1, 2018 LJ, 2018 LH1, 2018 LG1, 2018 LG, 2018 LF3, 2018 LF1, 2018 LE3, 2018 LD3, 2018 LD1, 2018 LC3, 2018 LC1, 2018 LC, 2018 KV, 2018 KM2, 2018 KM1, 2018 KL2, 2018 KH1, 2018 KG1, 2018 KF3, 2018 KC3, 2018 KB1, 2018 JY1, 2018 JV2, 2018 JS1, 2018 JQ1, 2018 JJ2, 2018 JE5, 2018 JE1, 2018 JD5, 2018 JD2, 2018 HS3, 2018 GL1, 2018 FS1, 2018 BY2, 2017 NK
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-L47 -- 2017 KB3
`L01`	Visnjan Obs., 4 in MPECs 2018-L47, 2018-L48, 2018-L49 & 2018-L50 -- 2018 LU2, 2018 LE3, 2018 LD3, 2018 LC3

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

Impact Risk Monitoring on 10 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 LE1	JPL Sentry	1533	2066-2103	6	3.205672e-06	-7.13	-7.16	0	JPL: Computed at 07:36 today Pacific time based on 32 observations spanning 4.8213 days (2018-Jun-05.39422 to 2018-Jun-10.21551). Diameter approximately 0.010 km. from weighted mean H=27.59.
2018 LE1	NEODyS	1533	2066-2117	21	4.48e-06	-6.92	-7.28	0	NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2018-06-05.395 to 2018-06-09.186."

2018 LD1	JPL Sentry	1533	R E M O V E D						JPL: Risk listing removed at 1429 UTC today
2018 LD1	NEODyS	1533	2061-2110	4	2.85e-07	-7.53	-7.58	0	NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2018-06-05.341 to 2018-06-09.209."

2018 LB1	NEODyS	2100	2032	1	1.64e-05	-2.01	-2.01	0	NEODyS #2 for the day: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2018-05-19.426 to 2018-06-09.184."
2018 LB1	JPL Sentry	1533	2032-2063	2	9.638067e-05	-1.20	-1.20	1	JPL: Computed at 07:37 June 9th Pacific time based on 24 observations spanning 20.619 days (2018-May-19.425541 to 2018-Jun-09.04458). Diameter approximately 0.320 km. from weighted mean H=20.13.

2018 LM	NEODyS	2100	2112-2116	3	5.79e-07	-6.79	-6.87	0	NEODyS: "Based on 59 optical observations (of which 0 are rejected as outliers) from 2018-06-04.255 to 2018-06-09.171."
2018 LM	JPL Sentry	1533	2111-2116	3	1.08155e-06	-6.51	-6.65	0	JPL: Computed at 07:32 today Pacific time based on 66 observations spanning 5.9111 days (2018-Jun-04.25437 to 2018-Jun-10.16548). Diameter approximately 0.032 km. from weighted mean H=25.11.

2017 KB3	JPL Sentry	1533	2100-2117	5	1.29842e-07	-7.18	-7.40	0	JPL: Computed at 07:06 today Pacific time based on 41 observations spanning 13.160 days (2017-May-17.21791 to 2017-May-30.378137). Diameter approximately 0.034 km. from weighted mean H=24.98.

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 10 June '18

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

2100	Noted that NEODyS has updated its 2018 LB1 risk assessment - see above Noted that NEODyS has updated its 2018 LM risk assessment - see above
1851	Generated Traffic Report
1816	Grabbed MPEC 2018-L48 - 2018 LC3 - see above Grabbed MPEC 2018-L49 - 2018 LD3 - see above Grabbed MPEC 2018-L50 - 2018 LE3 - see above Grabbed MPEC 2018-L51 - 2018 LF3 - see above
1533	Noted that JPL Sentry has updated its 2017 KB3 risk assessment - see above 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 Noted that JPL Sentry has removed 2018 LD1 as an impact risk - see above Noted that NEODyS has updated its 2018 LD1 risk assessment - see above Noted that JPL Sentry has updated its 2018 LE1 risk assessment - see above Noted that NEODyS has updated its 2018 LE1 risk assessment - see above Noted that JPL Sentry has updated its 2018 LM risk assessment - see above Grabbed MPEC 2018-L47 - Daily Orbit Update - see above

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