2018-06-12 Tracking News

Contents on 12 June '18

Traffic Report -- five objects
IAU Minor Planet Center
- NEOCP Activity -- 41 listings
- New MPECs -- ten MPECs
Observers -- 39 observers
Impact Risk Monitoring -- seven objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 940 risk-listed objects, 29 have had news in the last 31 days. Updated at 1624 UTC on 12 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 12 June '18

Five objects reported inside ten LD

There are five small celestial bodies reported within ten lunar distances (LD) of our planet today. Nearest is risk-listed 2018 LD1, which is inbound from 6.74 to 4.38 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
0.9 LD June 15*	2018 LV3	17 m	5.3 from 7.8 LD	yesterday - June 19	NEW, EPU +/- 7 mins.*, intruder - MPEC

1.57 LD June 14	2018 LD1	18 m	4.38 from 6.74 LD	June 10 - 18	risk - DOU

3.93 LD June 9	2018 LR2	25 m	5.93 to 7.73 LD	June 5 - 14	risk - DOU

5.56 LD June 10	2018 EJ4	186 m	5.80 to 6.34 LD	June 4 - 16	radar/NHATS target - DOU
8.96 LD yesterday	2015 DP155	162 m	8.99 to 9.13 LD	June 6 - 15	NHATS target - DOU

Approaching (sorted by 10-LD bubble entry date)
7.62 LD June 15	2018 LK	152 m	11.02 from 13.18 LD	tomorrow - June 18	DOU
6.0 LD June 29*	2018 LR3	19 m	15.3 from 16.0 LD	June 20 - July 8	NEW, EPU +/- 50 mins.*, risk - MPEC
* EPU = Earth passage uncertainty

This report was generated at 2056 UTC with the discoveries of inbound intruder 2018 LV3 (MPEC) and approaching risk-listed 2018 LR3 (MPEC), and with the recovery of distant 2016 LB in today's DOU MPEC, which also has follow-up for five objects in the above active traffic table plus four departed objects: 2018 LU2, 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 12 June '18

The MPC's NEO Confirmation Page has 41 listings

When last checked at 2330 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 41 objects listed. Of these, 21 were "one nighters." So far The Tracking News has counted a total of 59 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 12 June '18

Minor Planet Electronic Circulars

As of last check at 2330 UTC, there have been ten MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2018-L54 time-stamped "01:18 UT" - 2005 MF5 - see below
MPEC 2018-L55 time-stamped "12:03 UT" - Daily Orbit Update - see below
MPEC 2018-L56 time-stamped "13:28 UT" - 2018 LO3 - see below
MPEC 2018-L57 time-stamped "13:33 UT" - 2018 LS3 - see below
MPEC 2018-L58 time-stamped "13:38 UT" - 2018 LU3 - see below
MPEC 2018-L59 time-stamped "13:42 UT" - 2018 LV3 - see below
MPEC 2018-L60 time-stamped "13:50 UT" - 2018 LP3 - see below
MPEC 2018-L61 time-stamped "13:55 UT" - 2018 LQ3 - see below
MPEC 2018-L62 time-stamped "13:59 UT" - 2018 LR3 - see below
MPEC 2018-L63 time-stamped "14:04 UT" - 2018 LT3

MPEC 2018-L63 - "14:04 UT" - 2018 LT3

K18L03T 2018 LT3 (small asteroid, H=24.8 ~37m) was picked up at 1035 UT on 10 June by Pan-STARRS 1 (PS1), observing it at June 10.42-45p4. This detection was confirmed by Visnjan Obs. (June 10.93p2), Great Shefford Obs. (June 11.02p3), Steward Obs. Mt. Lemmon Station (June 11.24p3 & 12.25p4), McDonald Obs. (June 11.26p3), and Sandlot Obs. (June 11.33p1).

MPEC 2018-L62 - "13:59 UT" - 2018 LR3

K18L03R 2018 LR3 (risk listed, Earth MOID=1.7 LD, H=26.2 ~19m, close passer) was picked up at 0804 UT on 10 June by PS1, observing it at June 10.33-35p3. This detection was confirmed by Steward Mt. Lemmon Sta. (June 11.15-16p3), R. Wainscoat on Mauna Kea (June 11.27p3), ESA Optical Ground Station (ESA OGS) (June 11.91-92p3), and the Spacewatch 0.9m telescope (June 12.16-18p3).

MPEC 2018-L61 - "13:55 UT" - 2018 LQ3

K18L03Q 2018 LQ3 (small asteroid, i=36.2°, Earth MOID=7.3 LD, H=22.4 ~112m) was picked up at 0759 UT on 10 June by ATLAS Mauna Loa, observing it at June 10.33-36p6. This detection was confirmed by Great Shefford Obs. (June 10.94-95p5 & 12.02p4), B. Lutkenhoner via Slooh.com Canary Islands Obs. (June 11.05-06p2 & 11.94-96p2), SONEAR (June 11.14-15p6), McDonald Obs. (June 11.15-16p8), Steward Mt. Lemmon Sta. (June 11.16-17p4 & 12.24p4), Harlingten Research Obs. (June 11.16-17p3), M. Suzuki via iTelescope Obs. Mayhill (June 11.17-18p3), the Catalina Sky Survey (CSS) (June 11.25-26p3), Wiggins Obs. (June 11.25-26p7 & 12.25-26p10), Visnjan Obs. (June 11.87-88p4), ESA OGS (June 11.91p3), North Obs. (June 11.92-95p6), Golden Hill Obs. (June 11.96-99p7), Northolt Branch Obs. (June 11.99-01p4), Rand II Obs. (June 12.10p4), Wobblesock Obs. (June 12.35-36p3), Moriyama Obs. (June 12.49-51p5), and JAXA Space Tracking & Communications Center (JAXA STCC) (June 12.50p3).

MPEC 2018-L60 - "13:50 UT" - 2018 LP3

K18L03P 2018 LP3 (small asteroid, Earth MOID=8.5 LD, H=25.7 ~25m) was picked up at 0628 UT on 10 June by the Mt. Lemmon Survey (MLS), observing it at June 10.27-29p8 and 10.39p4. This detection was confirmed by PS1 (June 5.37p1 & 6.37-40p2), Steward Mt. Lemmon Sta. (June 10.36p4, 11.17p4 & 12.24-25p4), Visnjan Obs. (June 10.86p4), and Great Shefford Obs. (June 10.99p2 & 12.03p3).

MPEC 2018-L59 - "13:42 UT" - 2018 LV3

K18L03V 2018 LV3 (Earth MOID=0.9 LD, H=26.5 ~17m) was picked up at 0910 UT on 11 June by Pan-STARRS 2 (PS2), observing it at June 11.38-40p3. This detection was confirmed by Steward Mt. Lemmon Sta. (June 12.19p4 & 12.37p4), Chabot Obs. (June 12.24-26p6), and Wobblesock Obs. (June 12.48-50p2).

MPEC 2018-L58 - "13:38 UT" - 2018 LU3

K18L03U 2018 LU3 (small asteroid, H=23.1 ~81m) was picked up at 0521 UT on 11 June by CSS, observing it at June 11.22-23p3. This detection was confirmed by PS1 (June 10.33-34p2), Steward Mt. Lemmon Sta. (June 11.27-28p4 & 12.24p3), Wobblesock Obs. (June 11.36-37p3 & 12.37-39p3), and Arcadia Obs. (June 11.42-45p3).

MPEC 2018-L57 - "13:33 UT" - 2018 LS3

K18L03S 2018 LS3 (small asteroid, H=25.3 ~29m) was picked up at 1020 UT on 10 June by PS1, observing it at June 10.43-46p3. This detection was confirmed by Steward Mt. Lemmon Sta. (June 11.21p3 & 12.25p4) and the Spacewatch 1.8m telescope (June 12.25p3).

MPEC 2018-L56 - "13:28 UT" - 2018 LO3

K18L03O 2018 LO3 (small asteroid, H=25.6 ~26m) was picked up at 0800 UT on 4 June by PS1, observing it at June 4.33-36p3. This detection was confirmed by R. Wainscoat/Mauna Kea (June 6.41-42p3), MLS (June 11.27-28p4), Steward Mt. Lemmon Sta. (June 11.38p3 & 12.34-35p4), and Spacewatch 1.8m (June 12.23-24p3).

<< DOU on 12 June '18 >> MPEC 2018-L55 - "12:03 UT" - Daily Orbit Update

Observations of risk-listed objects
K18L02R 2018 LR2 (small asteroid, arc=3 days, H=25.7 ~25m, close passer) from Sormano Obs. (June 9.87-88p3)
K18L01E 2018 LE1 (small asteroid, arc=7 days, H=27.5 ~11m, close passer, NHATS target) from Spacewatch 0.9m (June 12.27-30p3)
K18L01D 2018 LD1 (small asteroid, arc=7 days, H=26.2 ~19m, close passer) from ESA OGS (June 12.07p3)
K18L01B 2018 LB1 (Q=4.580 AU, arc=24 days, H=20.0 ~339m) from ESA OGS (June 11.96-97p2) and Spacewatch 0.9m (June 12.20-23p3)
K18L00M 2018 LM (small asteroid, arc=8 days, H=25.1 ~32m, close passer, NHATS target) from ESA OGS (June 11.90p2)
Observations of close-passing objects
K18L02U 2018 LU2 (arc=5 days, H=26.7 ~15m, NHATS target) from Steward Mt. Lemmon Sta. (June 12.36-37p4)
K18L00K 2018 LK (arc=56 days, H=21.7 ~155m) from program code "*" (19) via Slooh.com Canary Islands Obs. (June 6.10-11p3) and North Obs. (June 11.97-99p5)
K18E04J 2018 EJ4 (arc=89 days, H=21.4 ~178m, NHATS target, radar support) from Slooh.com CIO/code "*" (19) (May 29.92-93p3) and N.V. Maigurova via Nikolaev Obs. (June 7.84-86p9)
K16L00B 2016 LB (arc=2 opp, H=22.8 ~93m) from Spacewatch 1.8m (June 11.17-20p3 at R=21.7-22.3)
K15DF5P 2015 DP155 (arc=2 opp, H=21.5 ~170m, NHATS target) from Maigurova/Nikolaev Obs. (June 6.89-91p8 & 7.92-94p8) and Northolt Branch Obs. (June 10.95-99p11)
68347 68347 2001 KB67 (radar support) from Maigurova/Nikolaev Obs. (June 7.89-91p6)
Observation campaigns (NHATS targets, radar support)
K18L03F 2018 LF3 (arc=4 days, H=25.6 ~26m, NHATS) from Steward Mt. Lemmon Sta. (June 12.32-33p3)
K18L01J 2018 LJ1 (arc=6 days, H=26.5 ~17m, NHATS) from Spacewatch 0.9m (June 9.27-28p3)
K18L01C 2018 LC1 (arc=7 days, H=24.8 ~37m, NHATS) from Steward Mt. Lemmon Sta. (June 12.35p4)
K18L00C 2018 LC (arc=10 days, H=25.5 ~27m, NHATS) from MLS (June 11.25-27p4) and Spacewatch 1.8m (June 12.18-19p3)
K18K02C 2018 KC2 (arc=22 days, H=22.8 ~93m, NHATS) from Spacewatch 1.8m (June 11.31-33p3)
K18K01P 2018 KP1 (arc=23 days, H=25.1 ~32m, NHATS) from Spacewatch 1.8m (June 11.28-30p3 at R=21.2-22.5)
K18K01D 2018 KD1 (arc=24 days, H=24.5 ~43m, NHATS) from Spacewatch 1.8m (June 11.34p3)
05604 5604 1992 FE (radar) from WISE (June 8.06p2, 8.19p1, 8.32p1, 8.51p1 & 8.78p1) and CSS (June 11.16-18p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K18L02S 2018 LS2 (arc=7 days, H=22.3 ~117m) from Steward Mt. Lemmon Sta. (June 12.29-30p4)
K18L02N 2018 LN2 (arc=6 days, H=23.1 ~81m) from Chabot Obs. (June 12.20-21p3)
K18L01G 2018 LG1 (arc=6 days, H=23.3 ~74m) from Steward Mt. Lemmon Sta. (June 12.35p4)
K18L01F 2018 LF1 (arc=7 days, H=24.5 ~43m) from Steward Mt. Lemmon Sta. (June 12.36p3)
K18K03C 2018 KC3 (arc=19 days, H=23.1 ~81m) from Wishing Star Obs. (June 12.08-09p3)
K18J02S 2018 JS2 (arc=29 days, H=22.5 ~107m) from Spacewatch 0.9m (June 9.22-23p2)
K18J02G 2018 JG2 (arc=32 days, H=23.9 ~56m) from Spacewatch 1.8m (June 11.45p3)
K15A45M 2015 AM45 (arc=3 opp, H=22.1 ~129m) from Spacewatch 1.8m (June 12.41-43p3)
K18K00L 2018 KL (arc=26 days, H=21.9 ~141m) from Spacewatch 0.9m (June 11.31p2)
Observations of other objects
K18L03E 2018 LE3 (Q=4.115 AU, arc=4 days, H=21.3 ~186m) from Steward Mt. Lemmon Sta. (June 12.28p4)
K18L01H 2018 LH1 (i=42.6°, Q=4.893 AU, arc=22 days, H=19.7 ~389m) from Spacewatch 0.9m (June 12.21-24p3)
K18L00N 2018 LN (arc=8 days, H=20.2 ~309m) from Steward Mt. Lemmon Sta. (June 12.35-36p3)
K18K04B 2018 KB4 (arc=16 days, H=21.2 ~195m) from Wobblesock Obs. (June 11.46-47p2)
K18K02R 2018 KR2 (arc=21 days, H=19.1 ~513m) from PS1 (June 11.58-59p2)
K18K02L 2018 KL2 (arc=22 days, H=21.7 ~155m) from MLS (June 11.27-28p4) and Chabot Obs. (June 12.27-28p3)
K18J05E 2018 JE5 (arc=27 days, H=20.6 ~257m) from Slooh.com CIO/code "*" (19) (May 17.02-04p3) and MLS (June 11.31-33p4)
K18J03C 2018 JC3 (arc=2 opp, H=20.0 ~339m) from Wobblesock Obs. (June 11.40-42p3) and ATLAS Mauna Loa (June 11.49-52p4)
K18J02D 2018 JD2 (i=51.0°, q=0.214 AU, arc=33 days, H=18.9 ~562m) from MLS (June 11.21-22p4)
K18J01P 2018 JP1 (arc=35 days, H=20.8 ~234m) from Spacewatch 1.8m (June 12.21-22p3 at R=21.2-22.1)
K18J01E 2018 JE1 (arc=35 days, H=19.9 ~355m) from CSS (June 11.20-22p3) and Wobblesock Obs. (June 11.43-44p3)
K18F05Q 2018 FQ5 (arc=73 days, H=18.7 ~616m) from program code "#" (12) via Slooh.com Chile Obs. (May 6.08-09p3)
K18E04Q 2018 EQ4 (arc=91 days, H=19.6 ~407m) from Spacewatch 0.9m (June 12.25-26p3)
K18E04E 2018 EE4 (arc=93 days, H=20.5 ~269m) from Spacewatch 1.8m (June 11.22-26p3 at R=22.1-7)
K17W29C 2017 WC29 (arc=2 opp, H=17.8 ~933m) from Steward Mt. Lemmon Sta. (June 10.44-45p4 at G=23.5-6)
K17K05D 2017 KD5 (i=50.1°, arc=2 opp, H=19.8 ~371m) from Spacewatch 1.8m (June 10.43-45p3)
K15FB8P 2015 FP118 (arc=2 opp, H=19.3 ~467m) from CSS (June 11.23-24p4)
K13Q10H 2013 QH10 (Q=4.789 AU, arc=2 opp, H=18.5 ~676m) from MLS (June 11.21-22p4)
K12P06G 2012 PG6 (q=0.322 AU, arc=4 opp, H=20.3 ~295m) from PS1 (June 11.57-60p4)
K12M04R 2012 MR4 (i=53.1°, arc=4 opp, H=17.6 ~1.02 km) from Spacewatch 0.9m (June 12.40-44p3)
K12F62N 2012 FN62 (Q=5.272 AU, arc=2 opp, H=17.7 ~977m) from MLS (June 11.23-24p4)
K04L00H 2004 LH (i=39.5°, arc=4 opp, H=18.8 ~589m) from WISE (June 10.08p1, 10.15p1, 10.21p1, 10.28p1 & 10.48p1)
J99L01W 1999 LW1 (arc=3 opp, H=20.3 ~295m) from Frasso Sabino Obs. (June 10.00-01p3)
q2684 522684 2016 JP from MLS (June 11.25-27p4)
p8469 518469 2005 LH8 from CSS (June 11.42-43p4)
p8463 518463 2005 JY80 from CSS (June 11.44-45p4)
p3171 513171 2004 MD6 from MLS (June 11.41-42p4)
p1523 511523 2014 QS439 from CSS (June 11.42-43p4)
o4711 504711 2009 SP171 from the Palomar Transient Factory (PTF) (June 11.27-34p5)
n5615 495615 2015 PQ291 from CSS (June 11.18-20p4) and ATLAS Mauna Loa (June 11.31-33p4)
m4795 484795 2009 DE47 from MLS (June 11.16-18p4)
l5967 475967 2007 JF22 from CSS (June 11.20-22p4)
k7309 467309 1996 AW1 from ATLAS Mauna Loa (June 11.48-52p4)
h8430 438430 2006 WL3 from MLS (June 11.23-24p4)
f5029 415029 2011 UL21 from WISE (June 9.46p1, 9.59p1, 9.72p1, 9.92p1, 10.05p1, 10.12p1, 10.18p2, 10.25p1, 10.31p1, 10.44p1, 10.57p2 & 10.70p1)
e8752 408752 1991 TB2 from ATLAS Mauna Loa (June 11.30-32p3)
e4108 404108 2012 SF51 from PS1 (June 11.56-59p4)
a7390 367390 2008 MB5 from MLS (June 11.29-30p4)
X3578 333578 2006 KM103 from MLS (June 11.41-42p4)
R8327 278327 2007 HA59 from ATLAS Haleakala (June 11.27-30p7)
R6392 276392 2002 XH4 from MLS (June 11.23-24p4)
O3566 243566 1995 SA from MLS (June 11.45-46p4)
M0839 220839 2004 VA from CSS (June 11.27-28p3) and ATLAS Mauna Loa (June 11.40-43p4)
L2359 212359 2006 EV52 from JPL SynTrack Robotic Telescope (April 18.41-45p3, 20.31p1, 20.36p1 & 20.40p1)
J0161 190161 2005 TJ174 from PS1 (June 11.28-31p3)
G2168 162168 1999 GT6 from Maigurova/Nikolaev Obs. (June 6.99-02p9 & 7.97-99p7) and CSS (June 11.35-37p4)
F3957 153957 2002 AB29 from Slooh.com CIO/code "*" (19) (June 4.09-10p3)
F2637 152637 1997 NC1 from CSS (June 11.44-45p4)
D9345 139345 2001 KA67 from Maigurova/Nikolaev Obs. (June 6.94-97p7 & 7.95-99p10) and ATLAS Mauna Loa (June 11.54-56p3)
D9289 139289 2001 KR1 from ATLAS Haleakala (June 11.40-44p3)
D8847 138847 2000 VE62 from PTF (June 8.23-28p4 & 8.33p1), ATLAS Haleakala (June 11.41-43p3), and Wishing Star Obs. (June 12.05-06p3)
A0085 100085 1992 UY4 from CSS (June 11.44-45p3)
96189 96189 Pygmalion (1991 NT3) from N. Falla via iTelescope Obs. Siding Spring (June 11.59-61p3 & 11.65p1)
86067 86067 1999 RM28 from PTF (June 11.36p1 & 11.44p1)
85713 85713 1998 SS49 from PS1 (June 11.52-54p3)
85628 85628 1998 KV2 from CSS (June 11.27-29p4)
66391 66391 1999 KW4 from ATLAS Haleakala (June 11.40-44p4) and Wishing Star Obs. (June 12.04p3)
66251 66251 1999 GJ2 from PTF (June 8.23-25p2 & 11.17p2)
65996 65996 1998 MX5 from CSS (June 11.35-37p4)
38091 38091 1999 JT3 from MLS (June 11.16-18p4)
36183 36183 1999 TX16 from CSS (June 11.22-24p4)
25916 25916 2001 CP44 from CSS (June 11.33-35p4) and ATLAS Mauna Loa (June 11.48-51p4)
13553 13553 Masaakikoyama (1992 JE) from ATLAS Mauna Loa (June 11.57-59p3)
11500 11500 Tomaiyowit (1989 UR) from MLS (June 11.43-44p4)
09856 9856 1991 EE from ATLAS Haleakala (June 11.27-30p4)
06569 6569 Ondaatje (1993 MO) from CSS (June 11.42-43p3)
05626 5626 1991 FE from CSS (June 11.31-33p4)
04596 4596 1981 QB from MLS (June 11.45-46p4)
03552 3552 Don Quixote (1983 SA) from Campo Catino Austral Obs. (CAO) (June 12.41-42p3)
01866 1866 Sisyphus (1972 XA) from ATLAS Haleakala (June 11.32-35p4)
01685 1685 Toro (1948 OA) from CSS (June 11.20-22p4)
01580 1580 Betulia (1950 KA) from ATLAS Haleakala (June 11.25-29p5)
00719 719 Albert (1911 MT) from ATLAS Mauna Loa (June 11.51-54p4)

MPEC 2018-L54 - "01:18 UT" - 2005 MF5

K05M05F 2005 MF5 (H=21.7 ~155m) from MLS (June 11.39-40p3), Steward Mt. Lemmon Sta. (June 11.45p3), and Visnjan Obs. (June 11.98-99p3)

Observers on 12 June '18

A total of 39 observers appear in today's MPECs.

Code	Observer / observatory
`E23`	Arcadia Obs. in New South Wales, 1 in MPEC 2018-L58 -- 2018 LU3
`T05`	ATLAS Haleakala in Hawaii, 7 in MPEC 2018-L55 -- 66391, 278327, 139289, 138847, 9856, 1866, 1580
`T08`	ATLAS Mauna Loa in Hawaii, 10 in MPECs 2018-L55 & 2018-L61 -- 2018 LQ3, 2018 JC3, 495615, 467309, 408752, 25916, 220839, 139345, 13553, 719
`W96`	Campo Catino Austral Obs. in Chile, 1 in MPEC 2018-L55 -- 3552
`703`	Catalina Sky Survey (CSS) in Arizona, 21 in MPECs 2018-L55, 2018-L58 & 2018-L61 -- 2018 LU3, 2018 LQ3, 2018 JE1, 2015 FP118, 85628, 65996, 518469, 518463, 511523, 495615, 475967, 36183, 25916, 220839, 162168, 152637, 100085, 6569, 5626, 5604, 1685
`G58`	Chabot Obs. in northern California, 3 in MPECs 2018-L55 & 2018-L59 -- 2018 LV3, 2018 LN2, 2018 KL2
`J04`	ESA Optical Ground Station (ESA OGS) in the Canary Islands, 5 in MPECs 2018-L55, 2018-L61 & 2018-L62 -- 2018 LR3, 2018 LQ3, 2018 LM, 2018 LD1, 2018 LB1
`157`	Frasso Sabino Obs. in Italy, 1 in MPEC 2018-L55 -- 1999 LW1
`J77`	Golden Hill Obs. in England, 1 in MPEC 2018-L61 -- 2018 LQ3
`J95`	Great Shefford Obs. in England, 3 in MPECs 2018-L60, 2018-L61 & 2018-L63 -- 2018 LT3, 2018 LQ3, 2018 LP3
`G48`	Harlingten Research Obs. in New Mexico, 1 in MPEC 2018-L61 -- 2018 LQ3
`H06#`	M. Suzuki in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-L61 -- 2018 LQ3
`Q628`	N. Falla in England via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-L55 -- 96189
`P93`	JAXA Space Tracking & Communications Center in Japan, 1 in MPEC 2018-L61 -- 2018 LQ3
`U68`	JPL SynTrack Robotic Telescope, 1 in MPEC 2018-L55 -- 212359
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2018-L56 & 2018-L62 -- 2018 LR3, 2018 LO3
`711`	McDonald Obs. in Texas, 2 in MPECs 2018-L61 & 2018-L63 -- 2018 LT3, 2018 LQ3
`900`	Moriyama Obs. in Japan, 1 in MPEC 2018-L61 -- 2018 LQ3
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 20 in MPECs 2018-L54, 2018-L55, 2018-L56 & 2018-L60 -- 2018 LP3, 2018 LO3, 2018 LC, 2018 KL2, 2018 JE5, 2018 JD2, 2013 QH10, 2012 FN62, 2005 MF5, 522684, 513171, 484795, 438430, 38091, 367390, 333578, 276392, 243566, 11500, 4596
`0895`	N.V. Maigurova via Nikolaev Obs. in Ukraine, 5 in MPEC 2018-L55 -- 2018 EJ4, 2015 DP155, 68347, 162168, 139345
`J69`	North Obs. in England, 2 in MPECs 2018-L55 & 2018-L61 -- 2018 LQ3, 2018 LK
`Z80`	Northolt Branch Obs. in England, 2 in MPECs 2018-L55 & 2018-L61 -- 2018 LQ3, 2015 DP155
`I41`	Palomar Transient Factory (PTF) in southern California, 4 in MPEC 2018-L55 -- 86067, 66251, 504711, 138847
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2018-L55, 2018-L56, 2018-L57, 2018-L58, 2018-L60, 2018-L62 & 2018-L63 -- 2018 LU3, 2018 LT3, 2018 LS3, 2018 LR3, 2018 LP3, 2018 LO3, 2018 KR2, 2012 PG6, 85713, 404108, 190161
`F52`	Pan-STARRS 2 in Hawaii, 1 in MPEC 2018-L59 -- 2018 LV3
`W71`	Rand II Obs. in New York, 1 in MPEC 2018-L61 -- 2018 LQ3
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2018-L63 -- 2018 LT3
`G40*`	program code "*" (19) via Slooh.com Canary Islands Obs. in the Canary Islands, 4 in MPEC 2018-L55 -- 2018 LK, 2018 JE5, 2018 EJ4, 153957
`G409`	B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-L61 -- 2018 LQ3
`W88#`	program code "#" (12) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-L55 -- 2018 FQ5
`Y00`	SONEAR in Brazil, 1 in MPEC 2018-L61 -- 2018 LQ3
`587`	Sormano Obs. in Italy, 1 in MPEC 2018-L55 -- 2018 LR2
`691`	Spacewatch 0.9m telescope in Arizona, 9 in MPECs 2018-L55 & 2018-L62 -- 2018 LR3, 2018 LJ1, 2018 LH1, 2018 LE1, 2018 LB1, 2018 KL, 2018 JS2, 2018 EQ4, 2012 MR4
`291`	Spacewatch 1.8m telescope in Arizona, 12 in MPECs 2018-L55, 2018-L56 & 2018-L57 -- 2018 LS3, 2018 LO3, 2018 LC, 2018 KP1, 2018 KD1, 2018 KC2, 2018 JP1, 2018 JG2, 2018 EE4, 2017 KD5, 2016 LB, 2015 AM45
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 18 in MPECs 2018-L54, 2018-L55, 2018-L56, 2018-L57, 2018-L58, 2018-L59, 2018-L60, 2018-L61, 2018-L62 & 2018-L63 -- 2018 LV3, 2018 LU3, 2018 LU2, 2018 LT3, 2018 LS3, 2018 LS2, 2018 LR3, 2018 LQ3, 2018 LP3, 2018 LO3, 2018 LN, 2018 LG1, 2018 LF3, 2018 LF1, 2018 LE3, 2018 LC1, 2017 WC29, 2005 MF5
`L01`	Visnjan Obs., 4 in MPECs 2018-L54, 2018-L60, 2018-L61 & 2018-L63 -- 2018 LT3, 2018 LQ3, 2018 LP3, 2005 MF5
`718`	Wiggins Obs. in Utah, 1 in MPEC 2018-L61 -- 2018 LQ3
`C51`	WISE in Earth polar orbit, 3 in MPEC 2018-L55 -- 2004 LH, 415029, 5604
`I15`	Wishing Star Obs. in Rhode Island, 3 in MPEC 2018-L55 -- 2018 KC3, 66391, 138847
`E08`	Wobblesock Obs. in New South Wales, 6 in MPECs 2018-L55, 2018-L58, 2018-L59 & 2018-L61 -- 2018 LV3, 2018 LU3, 2018 LQ3, 2018 KB4, 2018 JE1, 2018 JC3

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

Impact Risk Monitoring on 12 June '18

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2330 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 LR3	JPL Sentry	1530	2059-2117	25	4.2268011e-06	-6.35	-6.72	0	JPL: Computed at 08:02 today Pacific time based on 15 observations spanning 1.8578 days (2018-Jun-10.32538 to 2018-Jun-12.18314). Diameter approximately 0.019 km. from weighted mean H=26.24.

2018 LR2	NEODyS	1530	2118	1	5.95e-10	-9.92	-9.92	n/a	NEODyS: "Based on 36 optical observations (of which 1 are rejected as outliers) from 2018-06-08.372 to 2018-06-11.052."

2018 LE1	JPL Sentry	1530	2098-2103	3	1.8964465e-06	-7.40	-7.41	0	JPL: Computed at 07:42 today Pacific time based on 42 observations spanning 6.9049 days (2018-Jun-05.39422 to 2018-Jun-12.29911). Diameter approximately 0.010 km. from weighted mean H=27.66.
2018 LE1	NEODyS	1530	2066-2103	6	3.01e-06	-7.21	-7.22	0	NEODyS: "Based on 40 optical observations (of which 1 are rejected as outliers) from 2018-06-05.395 to 2018-06-11.283."

2018 LD1	JPL Sentry	1530	2116-2116	1	6.888e-08	-8.14	-8.14	0	JPL: Computed at 07:39 today Pacific time based on 39 observations spanning 6.7275 days (2018-Jun-05.34064 to 2018-Jun-12.068188). Diameter approximately 0.018 km. from weighted mean H=26.36.
2018 LD1	NEODyS	1530	2106-2116	2	7.15e-08	-8.14	-8.16	0	NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2018-06-05.341 to 2018-06-11.266."

2018 LB1	JPL Sentry	1606	2032-2073	3	3.527076e-05	-1.58	-1.58	1	JPL #2 for the day: Computed at 07:34 today Pacific time based on 45 observations spanning 23.805 days (2018-May-19.425541 to 2018-Jun-12.23056). Diameter approximately 0.340 km. from weighted mean H=20.02.
2018 LB1	NEODyS	1606	2032-2081	5	2.43e-05	-1.79	-1.79	1	NEODyS #2 for the day: "Based on 45 optical observations (of which 0 are rejected as outliers) from 2018-05-19.426 to 2018-06-12.231."

2018 LM	JPL Sentry	1530	2112-2112	1	2.318e-07	-7.18	-7.18	0	JPL: Computed at 07:42 today Pacific time based on 74 observations spanning 7.6502 days (2018-Jun-04.25437 to 2018-Jun-11.904532). Diameter approximately 0.032 km. from weighted mean H=25.15.

2017 KB3	NEODyS	1530	2084-2117	13	1.08e-07	-7.32	-7.79	0	NEODyS: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2017-05-17.219 to 2017-05-30.379."

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 12 June '18

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

2056	Generated Traffic Report
1606	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
1530	Noted that NEODyS 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 updated its 2018 LD1 risk assessment - 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 Noted that NEODyS has posted 2018 LR2 as an impact risk - see above Noted that JPL Sentry has posted 2018 LR3 as an impact risk - see above Grabbed MPEC 2018-L55 - Daily Orbit Update - see above Grabbed MPEC 2018-L56 - 2018 LO3 - see above Grabbed MPEC 2018-L57 - 2018 LS3 - see above Grabbed MPEC 2018-L58 - 2018 LU3 - see above Grabbed MPEC 2018-L59 - 2018 LV3 - see above Grabbed MPEC 2018-L60 - 2018 LP3 - see above Grabbed MPEC 2018-L61 - 2018 LQ3 - see above Grabbed MPEC 2018-L62 - 2018 LR3 - see above Grabbed MPEC 2018-L63 - 2018 LT3 - see above
0311	Grabbed MPEC 2018-L54 - 2005 MF5 - see above

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