2018-06-21 Tracking News

Contents on 21 June '18

Traffic Report -- five objects
IAU Minor Planet Center
- NEOCP Activity -- 41 listings
- New MPECs -- nine MPECs
Observers -- 29 observers
Impact Risk Monitoring -- ten objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 946 risk-listed objects, 31 have had news in the last 31 days. Updated at 1501 UTC on 21 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 21 June '18

Five objects reported inside ten LD

Five visitors are known to be less than ten lunar distances (LD) of our home world today. Nearest is 2018 LX5, which comes its closest to Earth on this passage -- 5.22 LD at 1801 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
0.54 LD June 16	2018 MZ4	6 m	9.11 to 11.27 LD	June 12 - 21	intruder, NHATS target, exits ten LD

5.22 LD today	2018 LX5	30 m	5.22 LD	June 18 - 24	Earth closest at 1801 UTC - DOU
6.02 LD June 29	2018 LR3	19 m	8.87 from 9.50 LD	yesterday - July 8	NHATS target, risk
6.50 LD today	2018 LS5	16 m	6.50 LD	June 18 - 25	Earth closest at 2048 UTC, risk - DOU
7.49 LD yesterday	2018 MK	51 m	7.77 to 9.55 LD	June 18 - 22

Approaching
5.51 LD June 27	2018 MX4	15 m	11.72 from 13.33 LD	June 23 - July 2	risk - DOU

This report was generated at 1753 UTC with follow-up in today's DOU MPEC for three objects active in the above traffic table and for four departed objects: 2018 MJ, 2015 DP155, 68347 2001 KB67, and 1999 FN19.

<< Reading: NASA/JPL announced yesterday a new multi-agency ten-year "National Near-Earth Object Preparedness Strategy and Action Plan" (PDF).

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 21 June '18

The MPC's NEO Confirmation Page has 41 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 41 objects listed. Of these, 28 were "one nighters." So far The Tracking News has counted a total of 54 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 21 June '18

Minor Planet Electronic Circulars

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

MPEC 2018-M68 time-stamped "11:34 UT" - 2018 LA16 - see below
MPEC 2018-M69 time-stamped "11:37 UT" - 2018 LB16 - see below
MPEC 2018-M70 time-stamped "11:40 UT" - 2018 MQ6 - see below
MPEC 2018-M71 time-stamped "11:43 UT" - 2018 MR6 - see below
MPEC 2018-M72 time-stamped "11:46 UT" - 2018 MS6 - see below
MPEC 2018-M73 time-stamped "11:50 UT" - 2018 MT6 - see below
MPEC 2018-M74 time-stamped "11:53 UT" - 2018 MU6 - see below
MPEC 2018-M75 time-stamped "12:04 UT" - Daily Orbit Update - see below
MPEC 2018-M76 time-stamped "23:34 UT" - 2018 MV6

MPEC 2018-M76 - "23:34 UT" - 2018 MV6

K18M06V 2018 MV6 (small asteroid, Q=4.590 AU, Earth MOID=7.9 LD, H=22.7 ~98m) was picked up at 1110 UT on 18 June by Pan-STARRS 1 (PS1), observing it at June 15.48-51p3, 18.47-50p4, and 21.46p1. This detection was confirmed by Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (June 19.22p3).

<< DOU on 21 June '18 >> MPEC 2018-M75 - "12:04 UT" - Daily Orbit Update

Observations of risk-listed objects
K18M05R 2018 MR5 (arc=6 days, H=20.9 ~224m) from the Spacewatch 0.9m telescope (June 21.40-42p3)
K18M05C 2018 MC5 (small asteroid, arc=9 days, H=25.0 ~34m, NHATS target) from Steward Obs. Mt. Lemmon Station (June 21.34-35p3)
K18M04X 2018 MX4 (small asteroid, arc=4 days, H=26.6 ~16m, close passer) from Steward Mt. Lemmon Sta. (June 21.30-32p4)
K18L05S 2018 LS5 (small asteroid, arc=7 days, H=26.6 ~16m, close passer) from Steward Mt. Lemmon Sta. (June 21.30p3)
K14U34X 2014 UX34 (small asteroid, arc=37 days, H=22.2 ~123m) from program code "+" (20) via Cerro Paranal (2014 Nov. 11.32-33p4)
Observations of close-passing objects
K18M00J 2018 MJ (NHATS target) from Steward Mt. Lemmon Sta. (June 21.25-26p4)
K18L05X 2018 LX5 (arc=6 days, H=25.3 ~29m) from KLENOT (June 20.86-87p7) and Steward Mt. Lemmon Sta. (June 21.16p4)
K15DF5P 2015 DP155 (arc=2 opp, H=21.5 ~170m, NHATS target) from Terskol Obs. (June 14.96-98p10)
J99F19N 1999 FN19 (arc=2 opp, H=22.5 ~107m, NHATS target, radar support) from Purple Mtn. Obs. Xuyi Station (June 20.76-79p4)
68347 68347 2001 KB67 (radar support) from Northolt Branch Obs. (June 19.98-99p4), the Catalina Sky Survey (CSS) (June 20.27-29p4), ATLAS Mauna Loa (June 20.44-46p3), and Xuyi Sta. (June 20.51-53p3)
Observation campaigns (NHATS targets, radar support)
K18L02V 2018 LV2 (arc=14 days, H=25.2 ~31m, NHATS) from the Spacewatch 1.8m telescope (June 21.39-40p2 at R=22.5)
K18L02Q 2018 LQ2 (arc=16 days, H=24.7 ~39m, NHATS) from Spacewatch 0.9m (June 21.31p2) and Steward Mt. Lemmon Sta. (June 21.42-43p4)
K18L02M 2018 LM2 (arc=15 days, H=24.3 ~47m, NHATS) from Spacewatch 1.8m (June 21.30-32p3 at R=22.1-8)
K18L01C 2018 LC1 (arc=16 days, H=24.8 ~37m, NHATS) from Steward Mt. Lemmon Sta. (June 21.37p4)
K18E00B 2018 EB (arc=58 days, H=21.8 ~148m, radar) from Rokycany Obs. (April 6.88p4)
-- NHATS target table -- Planetary radar schedules: Arecibo & Goldstone
Observations of small asteroids (H>22.0)
K18M06T 2018 MT6 (arc=2 days, H=26.1 ~20m) from KLENOT (June 20.91p3)
K18M05F 2018 MF5 (arc=9 days, H=23.2 ~78m) from Steward Mt. Lemmon Sta. (June 21.41-42p4)
K18L05U 2018 LU5 (arc=7 days, H=23.5 ~68m) from Steward Mt. Lemmon Sta. (June 21.23-24p4) and Spacewatch 1.8m (June 21.41-42p3)
K18L03D 2018 LD3 (arc=13 days, H=23.7 ~62m) from Eschenberg Obs. (June 20.89p3), KLENOT (June 20.89p7), Guidestar Obs. (June 20.90-92p3), and Steward Mt. Lemmon Sta. (June 21.28-29p4)
K18L02N 2018 LN2 (arc=14 days, H=23.1 ~81m) from the Mt. Lemmon Survey (MLS) (June 20.23-24p4) and Steward Mt. Lemmon Sta. (June 21.19p4)
K18L01G 2018 LG1 (arc=15 days, H=23.3 ~74m) from Steward Mt. Lemmon Sta. (June 21.29-30p4)
K18J02V 2018 JV2 (arc=40 days, H=23.7 ~62m) from Spacewatch 0.9m (June 21.21-24p3) and Steward Mt. Lemmon Sta. (June 21.28-29p4)
K18E04R 2018 ER4 (arc=99 days, H=22.2 ~123m) from Holmes/CTIO (June 20.98-99p3)
Observations of other objects
K18M06S 2018 MS6 (arc=3 days, H=20.7 ~245m) from Spacewatch 0.9m (June 21.41-43p3)
K18M05J 2018 MJ5 from Steward Mt. Lemmon Sta. (June 21.22p4)
K18M05H 2018 MH5 from Steward Mt. Lemmon Sta. (June 21.24-25p4)
K18M05G 2018 MG5 from Steward Mt. Lemmon Sta. (June 21.24p3)
K18M04V 2018 MV4 (arc=7 days, H=20.7 ~245m) from Spacewatch 1.8m (June 21.47p3)
K18L06R 2018 LR6 from Steward Mt. Lemmon Sta. (June 21.16-17p4)
K18L06Q 2018 LQ6 from Steward Mt. Lemmon Sta. (June 21.18-19p4)
K18L05W 2018 LW5 from Guidestar Obs. (June 20.97-01p3)
K18L05P 2018 LP5 (arc=8 days, H=20.7 ~245m) from Spacewatch 0.9m (June 21.33-34p2) and Steward Mt. Lemmon Sta. (June 21.42-43p4)
K18L05O 2018 LO5 from Spacewatch 0.9m (June 21.16-19p3) and Steward Mt. Lemmon Sta. (June 21.28p4)
K18L05G 2018 LG5 from Steward Mt. Lemmon Sta. (June 21.19-20p4)
K18L05F 2018 LF5 (i=41.0°, Q=4.519 AU, arc=33 days, H=20.0 ~339m) from MLS (June 20.29-30p3) and Steward Mt. Lemmon Sta. (June 21.37p3)
K18L04N 2018 LN4 from Steward Mt. Lemmon Sta. (June 21.26p4)
K18L04E 2018 LE4 from Steward Mt. Lemmon Sta. (June 21.25p4)
K18L03U 2018 LU3 from Spacewatch 0.9m (June 21.17-20p3)
K18L03Q 2018 LQ3 from Steward Mt. Lemmon Sta. (June 21.20-21p4 at G=20.9-22.4)
K18L03E 2018 LE3 from Steward Mt. Lemmon Sta. (June 21.26p3)
K18L03C 2018 LC3 (i=44.4°, arc=13 days, H=18.8 ~589m) from M. Kumrucu-Lohmiller via Slooh.com Canary Islands Obs. (June 20.17-21p4) and CSS (June 20.42-44p4)
K18L02S 2018 LS2 from Spacewatch 0.9m (June 21.17-18p2)
K18L02L 2018 LL2 (Q=4.204 AU, arc=27 days, H=20.0 ~339m) from Spacewatch 1.8m (June 21.30p3) and Steward Mt. Lemmon Sta. (June 21.32p3)
K18L00N 2018 LN (arc=17 days, H=20.3 ~295m) from Steward Mt. Lemmon Sta. (June 21.29p4)
K18K02K 2018 KK2 (Q=4.461 AU, arc=34 days, H=18.3 ~741m) from Holmes/CTIO (June 19.98-99p3)
K18K00V 2018 KV (Q=4.391 AU, arc=69 days, H=17.1 ~1.29 km) from Steward Mt. Lemmon Sta. (June 21.29-30p4)
K18K00T 2018 KT (arc=35 days, H=20.8 ~234m) from Sandlot Obs. (June 21.33-34p3)
K18J03C 2018 JC3 (arc=2 opp, H=20.0 ~339m) from KLENOT (June 20.90p9)
K18J01S 2018 JS1 (Q=4.378 AU, arc=69 days, H=20.3 ~295m) from MLS (June 20.27-28p4) and Steward Mt. Lemmon Sta. (June 21.32-33p3)
K18J01Q 2018 JQ1 (arc=44 days, H=21.4 ~178m) from Spacewatch 0.9m (June 21.26-29p3)
K18J01E 2018 JE1 (arc=45 days, H=19.9 ~355m) from Steward Mt. Lemmon Sta. (June 21.17p3)
K18J00E 2018 JE (arc=47 days, H=20.9 ~224m) from Holmes/CTIO (June 19.99-01p3 at V=22.4-5)
K17Y05E 2017 YE5 (Q=4.824 AU, arc=2 opp, H=19.3 ~467m) from LCO McDonald Obs. (June 20.41-42p10 & 21.40p6) and Guidestar Obs. (June 21.02-04p4)
K17Q17P 2017 QP17 (arc=2 opp, H=19.6 ~407m) from Spacewatch 0.9m (June 21.25-28p2)
K17D36O 2017 DO36 (i=57.3°, arc=3 opp, H=17.7 ~977m) from Guidestar Obs. (June 21.05-07p3)
K15X01K 2015 XK1 (arc=4 opp, H=19.9 ~355m) from Xuyi Sta. (June 15.64-67p2) and Castelmartini Obs. (June 19.98-99p3)
K15MA1Q 2015 MQ101 (arc=2 opp, H=19.9 ~355m) from Sandlot Obs. (June 21.24-29p3)
K15D00P 2015 DP (i=59.5°, arc=3 opp, H=18.4 ~708m) from Steward Mt. Lemmon Sta. (June 21.43-45p3)
K14UJ2S 2014 US192 (arc=4 opp, H=18.8 ~589m) from Spacewatch 1.8m (June 21.28p3)
K14G53E 2014 GE53 (Q=4.038 AU, arc=2 opp, H=18.5 ~676m) from Spacewatch 1.8m (June 21.16-19p3)
K12TD9M 2012 TM139 (arc=3 opp, H=19.7 ~389m) from Steward Mt. Lemmon Sta. (June 21.27-28p4)
K10J87F 2010 JF87 (arc=3 opp, H=19.2 ~490m) from UH/Tholen NEO Follow-Up 2.24m Telescope (June 15.52-53p2 at G=22.98)
K07N01L 2007 NL1 (arc=2 opp, H=21.4 ~178m) from Spacewatch 0.9m (June 21.32-34p3)
K05M05F 2005 MF5 from Guidestar Obs. (June 20.93-96p3)
K01SH0C 2001 SC170 (arc=2 opp, H=20.3 ~295m) from MLS (June 20.27-28p4)
j5550 455550 2004 JO2 from ATLAS Mauna Loa (June 20.48-53p4)
j0648 450648 2006 UC63 from CSS (June 20.25-26p3), ATLAS Mauna Loa (June 20.42-45p5), and Xuyi Sta. (June 20.55-58p3)
i4193 444193 2005 SE71 from WISE (June 18.59p1, 18.72p1, 18.78p1, 18.85p1, 18.98p1, 19.24p1 & 19.37p1)
g4482 424482 2008 DG5 from CSS (June 20.43-44p3)
f4903 414903 2010 XT45 from CSS (June 20.44p1)
d7237 397237 2006 KZ112 from WISE (June 19.27p1, 19.40p1, 19.67p2, 19.73p2 & 20.12p1)
J4126 194126 2001 SG276 from WISE (June 18.64p1, 18.77p1, 19.04p1, 19.30p1, 19.43p1, 19.56p1, 19.69p1, 19.82p1, 19.95p1 & 20.08p1)
I9973 189973 2003 XE11 from Xuyi Sta. (June 15.65-66p2)
G4217 164217 2004 PT42 from MLS (June 20.20-22p4)
G2168 162168 1999 GT6 from Xuyi Sta. (June 20.78-80p2)
F9533 159533 2001 HH31 from Xuyi Sta. (June 15.56-58p2)
F3957 153957 2002 AB29 from Northolt Branch Obs. (June 20.02-03p9)
E0039 140039 2001 SO73 from CSS (June 20.43-44p4)
D9345 139345 2001 KA67 from Xuyi Sta. (June 15.64-67p3) and Northolt Branch Obs. (June 20.01-02p7)
87309 87309 2000 QP from CSS (June 20.41-42p3)
85989 85989 1999 JD6 from CSS (June 20.18-20p4)
67367 67367 2000 LY27 from Xuyi Sta. (June 15.62-64p2)
66400 66400 1999 LT7 from SONEAR (June 20.08-09p3)
66391 66391 1999 KW4 from ATLAS Mauna Loa (June 20.35-38p4)
54401 54401 2000 LM from CSS (June 20.38-40p3)
53789 53789 2000 ED104 from MLS (June 20.35-37p4)
25916 25916 2001 CP44 from Xuyi Sta. (June 17.60-63p3) and SONEAR (June 20.00-01p3 & 20.19-20p3)
18109 18109 2000 NG11 from Xuyi Sta. (June 14.80-82p3)
17181 17181 1999 UM3 from CSS (June 20.16-18p3)
16834 16834 1997 WU22 from CSS (June 20.44-46p4)
15745 15745 Yuliya (1991 PM5) from ATLAS Mauna Loa (June 20.45-48p4)
13553 13553 Masaakikoyama (1992 JE) from Xuyi Sta. (June 15.74-77p2)
11500 11500 Tomaiyowit (1989 UR) from CSS (June 20.38-40p3)
07889 7889 1994 LX from Xuyi Sta. (June 15.73-76p5)
04596 4596 1981 QB from CSS (June 20.40-42p4)
01866 1866 Sisyphus (1972 XA) from ATLAS Mauna Loa (June 20.33-35p4)
01627 1627 Ivar (1929 SH) from ATLAS Mauna Loa (June 20.38-42p4) and Bamberg Obs. (June 20.92-96p5)

MPEC 2018-M74 - "11:53 UT" - 2018 MU6

K18M06U 2018 MU6 (small asteroid, H=22.2 ~123m) was picked up at 0805 UT on 19 June by MLS, observing it at June 19.34-35p4. This detection was confirmed by Steward Mt. Lemmon Sta. (June 19.44-46p6 & 20.35p4), Pan-STARRS 2 (PS2) (June 19.55-57p3), Visnjan Obs. (June 21.01-06p5), and Spacewatch 0.9m (June 21.36-39p3).

MPEC 2018-M73 - "11:50 UT" - 2018 MT6

K18M06T 2018 MT6 (small asteroid, Earth MOID=9.5 LD, H=26.1 ~20m) was picked up at 0549 UT on 19 June by MLS, observing it at June 19.24-26p4. This detection was confirmed by Steward Mt. Lemmon Sta. (June 19.35-36p4, 20.19p4 & 21.22-23p4), Holmes/CTIO (June 19.99p2), KLENOT (June 20.88-89p3), and Visnjan Obs. (June 20.92p2).

MPEC 2018-M72 - "11:46 UT" - 2018 MS6

K18M06S 2018 MS6 (H=20.7 ~245m) was picked up at 1339 UT on 18 June by PS1, observing it at June 18.57-59p3. This detection was confirmed by Steward Mt. Lemmon Sta. (June 19.39p4 & 21.35-36p3), Holmes/CTIO (June 19.39-40p3), Spacewatch 1.8m (June 20.46-47p3), and Visnjan Obs. (June 20.99p2).

MPEC 2018-M71 - "11:43 UT" - 2018 MR6

K18M06R 2018 MR6 (H=21.3 ~186m) was picked up at 0847 UT on 18 June by PS1, observing it at June 18.37-41p4 at w=21.8-22.4. This detection was confirmed by PS2 (June 18.36-38p3 at G=22.0-22.3), Holmes/CTIO (June 19.19-21p3), Spacewatch 1.8m (June 19.27-29p3 at R=21.7-22.3 & 20.37-39p3 at R=21.6-22.2), and Magdalena Ridge Obs. (MRO) (June 21.27-30p4).

MPEC 2018-M70 - "11:40 UT" - 2018 MQ6

K18M06Q 2018 MQ6 (H=21.2 ~195m) was picked up at 0944 UT on 16 June by PS1, observing it at May 22.50-51p2 at G=21.5-8 and June 16.41-43p3 at w=21.8-22.1. This detection was confirmed by Holmes/CTIO (June 17.09-10p3), Astronomical Research Obs. Westfield (June 17.16p2), Spacewatch 1.8m (June 18.29-30p3 at R=21.0-5 & 21.34-35p2 at R=21.8-22.2), and MRO (June 21.29-32p4).

MPEC 2018-M69 - "11:37 UT" - 2018 LB16

K18L16B 2018 LB16 (small asteroid, H=22.7 ~98m) was picked up at 1331 UT on 15 June by PS1, observing it at June 15.56-60p4 at w=21.5-22.1, 17.57-60p4 at w=21.2-9, and 19.57-59p3 at w=21.1-9. This detection was confirmed by R. Wainscoat on Mauna Kea (June 17.55p1), Spacewatch 0.9m (June 21.36-39p3), and Steward Mt. Lemmon Sta. (June 21.39-41p4).

MPEC 2018-M68 - "11:34 UT" - 2018 LA16

K18L16A 2018 LA16 (H=19.3 ~467m) was picked up at 1323 UT on 15 June by PS1, observing it at June 15.56-58p3, 17.58-60p3, and 19.57-59p3. This detection was confirmed by Spacewatch 1.8m (June 17.44-45p2), Holmes/CTIO (June 19.38-39p3), and MRO (June 21.36-38p4).

Observers on 21 June '18

A total of 29 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2018-M70 -- 2018 MQ6
`T08`	ATLAS Mauna Loa in Hawaii, 7 in MPEC 2018-M75 -- 68347, 66391, 455550, 450648, 15745, 1866, 1627
`K46`	Bamberg Obs. in Germany, 1 in MPEC 2018-M75 -- 1627
`160`	Castelmartini Obs. in Italy, 1 in MPEC 2018-M75 -- 2015 XK1
`703`	Catalina Sky Survey (CSS) in Arizona, 13 in MPEC 2018-M75 -- 2018 LC3, 87309, 85989, 68347, 54401, 450648, 424482, 414903, 17181, 16834, 140039, 11500, 4596
`309+`	program code "+" (20) via Cerro Paranal in Chile, 1 in MPEC 2018-M75 -- 2014 UX34
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPECs 2018-M68, 2018-M70, 2018-M71, 2018-M72, 2018-M73, 2018-M75 & 2018-M76 -- 2018 MV6, 2018 MT6, 2018 MS6, 2018 MR6, 2018 MQ6, 2018 LA16, 2018 KK2, 2018 JE, 2018 ER4
`151`	Eschenberg Obs. in Switzerland, 1 in MPEC 2018-M75 -- 2018 LD3
`A17`	Guidestar Obs. in Germany, 5 in MPEC 2018-M75 -- 2018 LW5, 2018 LD3, 2017 YE5, 2017 DO36, 2005 MF5
`246`	KLENOT in the Czech Republic, 4 in MPECs 2018-M73 & 2018-M75 -- 2018 MT6, 2018 LX5, 2018 LD3, 2018 JC3
`V37`	LCO McDonald Obs. in Texas, 1 in MPEC 2018-M75 -- 2017 YE5
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 3 in MPECs 2018-M68, 2018-M70 & 2018-M71 -- 2018 MR6, 2018 MQ6, 2018 LA16
`568^`	R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2018-M69 -- 2018 LB16
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 8 in MPECs 2018-M73, 2018-M74 & 2018-M75 -- 2018 MU6, 2018 MT6, 2018 LN2, 2018 LF5, 2018 JS1, 2001 SC170, 53789, 164217
`Z80`	Northolt Branch Obs. in England, 3 in MPEC 2018-M75 -- 68347, 153957, 139345
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 6 in MPECs 2018-M68, 2018-M69, 2018-M70, 2018-M71, 2018-M72 & 2018-M76 -- 2018 MV6, 2018 MS6, 2018 MR6, 2018 MQ6, 2018 LB16, 2018 LA16
`F52`	Pan-STARRS 2 (PS2) in Hawaii, 2 in MPECs 2018-M71 & 2018-M74 -- 2018 MU6, 2018 MR6
`D29`	Purple Mtn. Obs. Xuyi Station in China, 13 in MPEC 2018-M75 -- 2015 XK1, 1999 FN19, 68347, 67367, 450648, 25916, 189973, 18109, 162168, 159533, 139345, 13553, 7889
`K61`	Rokycany Obs. in the Czech Republic, 1 in MPEC 2018-M75 -- 2018 EB
`H36`	Sandlot Obs. in Kansas, 2 in MPEC 2018-M75 -- 2018 KT, 2015 MQ101
`G40!`	M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-M75 -- 2018 LC3
`Y00`	SONEAR in Brazil, 2 in MPEC 2018-M75 -- 66400, 25916
`691`	Spacewatch 0.9m telescope in Arizona, 13 in MPECs 2018-M69, 2018-M74 & 2018-M75 -- 2018 MU6, 2018 MS6, 2018 MR5, 2018 LU3, 2018 LS2, 2018 LQ2, 2018 LP5, 2018 LO5, 2018 LB16, 2018 JV2, 2018 JQ1, 2017 QP17, 2007 NL1
`291`	Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2018-M68, 2018-M70, 2018-M71, 2018-M72 & 2018-M75 -- 2018 MV4, 2018 MS6, 2018 MR6, 2018 MQ6, 2018 LV2, 2018 LU5, 2018 LM2, 2018 LL2, 2018 LA16, 2014 US192, 2014 GE53
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 37 in MPECs 2018-M69, 2018-M72, 2018-M73, 2018-M74 & 2018-M75 -- 2018 MX4, 2018 MU6, 2018 MT6, 2018 MS6, 2018 MJ5, 2018 MJ, 2018 MH5, 2018 MG5, 2018 MF5, 2018 MC5, 2018 LX5, 2018 LU5, 2018 LS5, 2018 LR6, 2018 LQ6, 2018 LQ3, 2018 LQ2, 2018 LP5, 2018 LO5, 2018 LN4, 2018 LN2, 2018 LN, 2018 LL2, 2018 LG5, 2018 LG1, 2018 LF5, 2018 LE4, 2018 LE3, 2018 LD3, 2018 LC1, 2018 LB16, 2018 KV, 2018 JV2, 2018 JS1, 2018 JE1, 2015 DP, 2012 TM139
`B18`	Terskol Obs. in Russia, 1 in MPEC 2018-M75 -- 2015 DP155
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-M75 -- 2010 JF87
`L01`	Visnjan Obs., 3 in MPECs 2018-M72, 2018-M73 & 2018-M74 -- 2018 MU6, 2018 MT6, 2018 MS6
`C51`	WISE in Earth polar orbit, 3 in MPEC 2018-M75 -- 444193, 397237, 194126

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

Impact Risk Monitoring on 21 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 MR5	JPL Sentry	1500	R E M O V E D						JPL: Risk listing removed at 1438 UTC today
2018 MR5	NEODyS	1500	2057-2118	2	1.18e-10	-7.50	-7.75	n/a	NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2018-06-15.587 to 2018-06-20.408."

2018 MC5	JPL Sentry	1500	2057-2113	11	6.610823e-06	-5.62	-6.23	0	JPL: Computed at 07:33 today Pacific time based on 24 observations spanning 8.8719 days (2018-Jun-12.475331 to 2018-Jun-21.34723). Diameter approximately 0.032 km. from weighted mean H=25.15.
2018 MC5	NEODyS	1500	2045-2116	24	1.88e-05	-5.18	-5.66	0	NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2018-06-12.476 to 2018-06-19.553."

2018 MX4	NEODyS	1500	2103-2117	2	2.07e-09	-9.95	-10.12	0	NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2018-06-17.314 to 2018-06-19.317."

2018 LZ13	NEODyS	1500	2057-2092	6	1.77e-07	-4.06	-4.29	0	NEODyS: "Based on 21 optical observations (of which 0 are rejected as outliers) from 2018-06-15.526 to 2018-06-19.397."

2018 LT5	NEODyS	1500	2025-2083	6	3.83e-08	-6.98	-7.46	0	NEODyS: "Based on 12 optical observations (of which 0 are rejected as outliers) from 2018-06-14.396 to 2018-06-19.044."

2018 LS5	JPL Sentry	1500	2048-2048	1	4.003e-09	-9.08	-9.08	0	JPL: Computed at 07:46 today Pacific time based on 17 observations spanning 6.9429 days (2018-Jun-14.35502 to 2018-Jun-21.29788). Diameter approximately 0.016 km. from weighted mean H=26.66.

2018 LR3	NEODyS	1500	2077-2118	13	2.1e-06	-6.66	-6.81	n/a	NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2018-06-10.326 to 2018-06-20.215."

2018 LM	NEODyS	1500	2116	1	1.31e-07	-7.49	-7.49	0	NEODyS: "Based on 88 optical observations (of which 0 are rejected as outliers) from 2018-06-04.255 to 2018-06-19.023."

2018 JG1	NEODyS	1500	2118	2	7.36e-09	-8.29	-8.33	n/a	NEODyS: "Based on 83 optical observations (of which 0 are rejected as outliers) from 2018-05-08.180 to 2018-06-19.334."

2014 UX34	JPL Sentry	1500	2084-2084	1	1.216e-08	-6.37	-6.37	0	JPL: Computed at 07:06 today Pacific time based on 59 observations spanning 36.925 days (2014-Oct-23.33075 to 2014-Nov-29.25596). Diameter approximately 0.120 km. from weighted mean H=22.33.

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 21 June '18

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

2358	Grabbed MPEC 2018-M76 - 2018 MV6 - see above
1753	Generated Traffic Report
1500	Noted that JPL Sentry has updated its 2014 UX34 risk assessment - see above Noted that NEODyS has updated its 2018 JG1 risk assessment - see above Noted that NEODyS has updated its 2018 LM risk assessment - see above Noted that NEODyS has updated its 2018 LR3 risk assessment - see above Noted that JPL Sentry has posted 2018 LS5 as an impact risk - see above Noted that NEODyS has updated its 2018 LT5 risk assessment - see above Noted that NEODyS has updated its 2018 LZ13 risk assessment - see above Noted that JPL Sentry has updated its 2018 MC5 risk assessment - see above Noted that NEODyS has posted 2018 MC5 as an impact risk - see above Noted that JPL Sentry has removed 2018 MR5 as an impact risk - see above Noted that NEODyS has posted 2018 MR5 as an impact risk - see above Noted that NEODyS has posted 2018 MX4 as an impact risk - see above Grabbed MPEC 2018-M68 - 2018 LA16 - see above Grabbed MPEC 2018-M69 - 2018 LB16 - see above Grabbed MPEC 2018-M70 - 2018 MQ6 - see above Grabbed MPEC 2018-M71 - 2018 MR6 - see above Grabbed MPEC 2018-M72 - 2018 MS6 - see above Grabbed MPEC 2018-M73 - 2018 MT6 - see above Grabbed MPEC 2018-M74 - 2018 MU6 - see above Grabbed MPEC 2018-M75 - Daily Orbit Update - see above

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