2018-06-20 Tracking News

Contents on 20 June '18

Traffic Report -- five objects
IAU Minor Planet Center
- NEOCP Activity -- 41 listings
- New MPECs -- ten MPECs
Observers -- 21 observers
Impact Risk Monitoring -- four objects
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page
Of 944 risk-listed objects, 28 have had news in the last 31 days. Updated at 1634 UTC on 20 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 20 June '18

Five objects reported inside ten LD

There are five transient natural objects reported within ten lunar distances (LD) of our planet today. Nearest is 2018 LX5, which moves in from 6.97 to 5.58 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
0.54 LD June 16	2018 MZ4	6 m	6.96 to 9.11 LD	June 12 - 21	NEW, intruder, NHATS target - MPEC

5.22 LD tomorrow	2018 LX5	31 m	5.58 from 6.97 LD	June 18 - 24	DOU
6.02 LD June 29	2018 LR3	19 m	9.50 from 10.15 LD	today - July 8	NHATS target, enters ten LD, risk - DOU
6.50 LD tomorrow	2018 LS5	15 m	6.74 from 7.53 LD	June 18 - 25
7.49 LD today	2018 MK	51 m	7.49 LD	June 18 - 22	Earth closest at 1102 UTC

Approaching
5.51 LD June 27	2018 MX4	15 m	13.33 from 14.99 LD	June 23 - July 2	NEW - MPEC

This report was generated at 2343 UTC with the discovery of approaching 2018 MX4 (MPEC) announced late yesterday and today's announcement of outbound intruder 2018 MZ4 (MPEC). The DOU MPEC today has follow-up for inbound objects 2018 LX5 and risk-listed 2018 LR3, and for departed objects 2018 MJ and risk-listed 2018 JG1.

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 20 June '18

The MPC's NEO Confirmation Page has 41 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 41 objects listed. Of these, eighteen were "one nighters." So far The Tracking News has counted a total of 50 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 20 June '18

Minor Planet Electronic Circulars

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

MPEC 2018-M58 time-stamped "00:06 UT" - 2018 MH5 - see below
MPEC 2018-M59 time-stamped "00:10 UT" - 2018 MJ5 - see below
MPEC 2018-M60 time-stamped "00:13 UT" - 2018 MK5 - see below
MPEC 2018-M61 time-stamped "00:31 UT" - 2018 MZ4 - see below
MPEC 2018-M62 time-stamped "10:36 UT" - 2007 LT - see below
MPEC 2018-M63 time-stamped "12:04 UT" - Daily Orbit Update - see below
MPEC 2018-M64 time-stamped "15:05 UT" - 2018 MO5 - see below
MPEC 2018-M65 time-stamped "15:09 UT" - 2018 MP5 - see below
MPEC 2018-M66 time-stamped "15:13 UT" - 2018 MR5 - see below
MPEC 2018-M67 time-stamped "15:17 UT" - 2018 MQ5

MPEC 2018-M67 - "15:17 UT" - 2018 MQ5

K18M05Q 2018 MQ5 (small asteroid, H=23.8 ~59m) was picked up at 0909 UT on 18 June by the Mt. Lemmon Survey (MLS), observing it at June 18.38-40p3. This detection was confirmed by Steward Obs. Mt. Lemmon Station (June 18.46p3 at G=20.0, 19.40p4 at G=20.6-22.4 & 20.42p3 at G=20.3-21.0), Visnjan Obs. (June 19.04-05p3), and Astronomical Research Obs. Westfield (June 19.33-34p3).

MPEC 2018-M66 - "15:13 UT" - 2018 MR5

K18M05R 2018 MR5 (risk listed, H=20.9 ~224m) was picked up at 1330 UT on 19 June by Pan-STARRS 1 (PS1), observing it at June 15.59-60p2, 17.57p1, and 19.56-59p4. This detection was confirmed by Steward Mt. Lemmon Sta. (June 20.41p3).

MPEC 2018-M65 - "15:09 UT" - 2018 MP5

K18M05P 2018 MP5 (small asteroid, H=24.5 ~43m) was picked up at 0840 UT on 18 June by PS1, observing it at June 18.36-39p3. This detection was confirmed by Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (June 19.17p3) and Steward Mt. Lemmon Sta. (June 20.22p4).

MPEC 2018-M64 - "15:05 UT" - 2018 MO5

K18M05O 2018 MO5 (H=21.2 ~195m) was picked up at 1236 UT on 17 June by PS1, observing it at June 17.53-56p4. This detection was confirmed by Holmes/CTIO (June 18.27p2) and Steward Mt. Lemmon Sta. (June 19.40-41p4 & 20.40p4).

<< DOU on 20 June '18 >> MPEC 2018-M63 - "12:04 UT" - Daily Orbit Update

Observations of risk-listed objects
K18L03R 2018 LR3 (small asteroid, arc=10 days, H=26.2 ~19m, close passer, NHATS target) from Steward Mt. Lemmon Sta. (June 20.21p4)
K18L02K 2018 LK2 (arc=17 days, H=19.7 ~389m) from Holmes/CTIO (June 19.44p3)
K18J01G 2018 JG1 (small asteroid, arc=42 days, H=24.5 ~43m, close passer) from Holmes/CTIO (June 19.31-33p3)
Observations of recently (no longer) risk-listed objects
K18L04M 2018 LM4 (arc=9 days, H=18.7 ~616m) from Steward Mt. Lemmon Sta. (June 20.44p4)
K18L01B 2018 LB1 (Q=4.582 AU, arc=32 days, H=20.0 ~339m) from the Spacewatch 1.8m telescope (June 20.17-19p3)
K18K01B 2018 KB1 (arc=34 days, H=20.7 ~245m) from the Spacewatch 0.9m telescope (June 19.42-44p2) and Steward Mt. Lemmon Sta. (June 20.46p3)
K18J05D 2018 JD5 (arc=2 opp, H=18.9 ~562m) from Spacewatch 0.9m (June 19.41-45p3 & 20.45-46p3) and Steward Mt. Lemmon Sta. (June 20.44p4)
Observations of close-passing objects
K18M00J 2018 MJ (arc=3 days, H=26.1 ~20m, NHATS target) from Steward Mt. Lemmon Sta. (June 20.19p3)
K18L05X 2018 LX5 (arc=6 days, H=25.2 ~31m) from Wishing Star Obs. (June 20.09p2), Steward Mt. Lemmon Sta. (June 20.16p4), and Spacewatch 0.9m (June 20.26-27p3)
Observation campaigns (NHATS targets, radar support)
K18L05Q 2018 LQ5 (arc=6 days, H=24.9 ~35m, NHATS) from Steward Mt. Lemmon Sta. (June 20.23-25p3)
K18L02V 2018 LV2 (arc=13 days, H=25.2 ~31m, NHATS) from Spacewatch 1.8m (June 20.40-42p3 at R=21.9-22.7)
K18L02Q 2018 LQ2 (arc=15 days, H=24.7 ~39m, NHATS) from Spacewatch 0.9m (June 20.31-33p3)
K18L01C 2018 LC1 (arc=15 days, H=24.8 ~37m, NHATS) from Spacewatch 0.9m (June 20.31-33p3)
K18L00C 2018 LC (arc=18 days, H=25.5 ~27m, NHATS) from Spacewatch 1.8m (June 20.32-34p3 at R=22.3-5)
K18G01L 2018 GL1 (arc=72 days, H=23.7 ~62m, NHATS) from Spacewatch 0.9m (June 20.42-44p3)
-- NHATS target table
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K18M00A 2018 MA (arc=6 days, H=24.3 ~47m) from Steward Mt. Lemmon Sta. (June 20.39p3)
K18L06S 2018 LS6 (arc=6 days, H=22.2 ~123m) from Steward Mt. Lemmon Sta. (June 20.29-30p4)
K18L05R 2018 LR5 (arc=6 days, H=24.2 ~49m) from Steward Mt. Lemmon Sta. (June 20.27-28p4)
K18L05N 2018 LN5 (arc=16 days, H=24.5 ~43m) from Spacewatch 0.9m (June 20.22-24p3)
K18L04N 2018 LN4 (arc=8 days, H=23.7 ~62m) from Steward Mt. Lemmon Sta. (June 20.32p4)
K18L03U 2018 LU3 (arc=10 days, H=23.2 ~78m) from M. Kumrucu-Lohmiller via Slooh.com Chile Obs. (June 19.11-13p2) and Spacewatch 0.9m (June 20.17-19p3)
K18L02S 2018 LS2 (arc=15 days, H=22.4 ~112m) from Spacewatch 0.9m (June 20.18p2)
K18L00G 2018 LG (arc=18 days, H=22.6 ~102m) from MLS (June 19.29-30p3) and Spacewatch 1.8m (June 20.17p3)
K18J02V 2018 JV2 (arc=33 days, H=23.7 ~62m) from Visnjan Obs. (May 12.99p4)
K18L05H 2018 LH5 (arc=8 days, H=22.0 ~135m) from Steward Mt. Lemmon Sta. (June 20.32p4)
Observations of other objects
K18L05Z 2018 LZ5 (arc=6 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (June 20.34-35p4)
K18L05W 2018 LW5 (arc=7 days, H=20.5 ~269m) from Steward Mt. Lemmon Sta. (June 20.40p4)
K18L05P 2018 LP5 (arc=7 days, H=20.8 ~234m) from Steward Mt. Lemmon Sta. (June 20.34p4)
K18L05O 2018 LO5 (i=48.4°, arc=7 days, H=20.8 ~234m) from MLS (June 19.23-24p3), Spacewatch 0.9m (June 20.19-21p3), and Steward Mt. Lemmon Sta. (June 20.28-29p3)
K18L05F 2018 LF5 (i=41.0°, Q=4.519 AU, arc=31 days, H=19.9 ~355m) from the Palomar Transient Factory (PTF) (June 19.27-36p5) and the Catalina Sky Survey (CSS) (June 19.32-33p4)
K18L03C 2018 LC3 (i=44.4°, arc=13 days, H=18.8 ~589m) from Spacewatch 0.9m (June 20.45p2)
K18L02L 2018 LL2 (Q=4.204 AU, arc=26 days, H=20.1 ~323m) from Steward Mt. Lemmon Sta. (June 19.35p4 & 20.20-21p4) and Spacewatch 1.8m (June 20.24-25p3)
K18K03F 2018 KF3 (arc=25 days, H=19.8 ~371m) from Steward Mt. Lemmon Sta. (June 20.42-43p4)
K18K01G 2018 KG1 (Q=4.276 AU, arc=33 days, H=19.0 ~537m) from MLS (June 19.16-18p4) and Spacewatch 0.9m (June 20.16-18p3)
K18J05E 2018 JE5 (arc=36 days, H=20.6 ~257m) from Steward Mt. Lemmon Sta. (June 20.31-33p4)
K18J01Q 2018 JQ1 (arc=43 days, H=21.4 ~178m) from Spacewatch 0.9m (June 20.23-25p3)
K17Q17P 2017 QP17 (arc=2 opp, H=19.6 ~407m) from MLS (June 19.27-28p4) and Spacewatch 0.9m (June 20.22-25p3)
K15TH8Q 2015 TQ178 (arc=3 opp, H=20.4 ~282m) from MLS (June 19.16-18p4)
K15MA1Q 2015 MQ101 (arc=2 opp, H=19.9 ~355m) from Spacewatch 0.9m (June 20.20-22p3)
K15KF7H 2015 KH157 (arc=3 opp, H=19.9 ~355m) from UH/Tholen NEO Follow-Up 2.24m Telescope (June 13.57-60p4 at G=23.92-24.28 & 15.57-59p3 at G=23.99-24.25)
K15FB7R 2015 FR117 (arc=2 opp, H=20.7 ~245m) from Spacewatch 1.8m (June 20.31p3 at R=21.9-22.4)
K14UJ2S 2014 US192 (arc=4 opp, H=18.8 ~589m) from CSS (June 19.18-20p4)
K13L16H 2013 LH16 (Q=5.256 AU, arc=3 opp, H=18.9 ~562m) from Spacewatch 1.8m (June 20.26-28p3)
K02O04S 2002 OS4 (arc=5 opp, H=18.3 ~741m) from PS1 (June 19.56-60p4)
K01SH0C 2001 SC170 (arc=2 opp, H=20.4 ~282m) from CSS (June 19.27-29p3)
J99R02V 1999 RV2 (arc=3 opp, H=18.7 ~616m) from PS1 (June 19.53-56p4)
q0585 520585 2014 OA2 from MLS (June 19.29-30p3)
p8640 518640 2008 KZ5 from Squirrel Valley Obs. (June 19.11p2)
o9821 509821 2008 WQ63 from MLS (June 19.40-41p4)
k7309 467309 1996 AW1 from CSS (June 19.30-31p4) and Wishing Star Obs. (June 20.07-08p3)
j5550 455550 2004 JO2 from Castelmartini Obs. (June 18.97-98p3)
i4193 444193 2005 SE71 from Petit Jean Mtn. South Obs. (PJMSO) (April 25.30-31p7)
g0591 420591 2012 HF31 from Campo dos Amarais Obs. (June 19.19-21p3)
f5029 415029 2011 UL21 from Castelmartini Obs. (June 19.03-04p3)
R8327 278327 2007 HA59 from ATLAS Haleakala (June 19.27-30p8)
G4400 164400 2005 GN59 from MLS (June 19.20-22p4)
G2168 162168 1999 GT6 from Castelmartini Obs. (June 19.02p3)
F3957 153957 2002 AB29 from Castelmartini Obs. (June 18.95-96p3)
D9359 139359 2001 ME1 from MLS (June 19.18-20p4)
D9345 139345 2001 KA67 from Castelmartini Obs. (June 18.97p3)
D8847 138847 2000 VE62 from CSS (June 19.29-31p4)
99799 99799 2002 LJ3 from MLS (June 19.33-35p4)
87025 87025 2000 JT66 from MLS (June 19.38-40p4)
85628 85628 1998 KV2 from MLS (June 19.16-18p4)
68950 68950 2002 QF15 from Castelmartini Obs. (June 18.99p3)
66391 66391 1999 KW4 from Wishing Star Obs. (June 20.06-07p3)
53110 53110 1999 AR7 from CSS (June 19.16-18p4)
37336 37336 2001 RM from CSS (June 19.44-46p3)
27346 27346 2000 DN8 from Steward Mt. Lemmon Sta. (June 19.19-20p4)
25916 25916 2001 CP44 from MLS (June 19.27-28p4)
18882 18882 1999 YN4 from PS1 (June 19.56-57p2)
18109 18109 2000 NG11 from MLS (June 19.38-39p4)
16834 16834 1997 WU22 from Castelmartini Obs. (June 19.10p3)
13553 13553 Masaakikoyama (1992 JE) from Castelmartini Obs. (June 18.99p3)
07889 7889 1994 LX from Castelmartini Obs. (June 18.98p3)
07350 7350 1993 VA from MLS (June 19.34-35p4)
06569 6569 Ondaatje (1993 MO) from MLS (June 19.42-45p4)
05626 5626 1991 FE from MLS (June 19.20-22p4)
05011 5011 Ptah (6743 P-L) from PS1 (June 19.52-56p4)
03752 3752 Camillo (1985 PA) from CSS (June 19.20-22p4)
01627 1627 Ivar (1929 SH) from ATLAS Mauna Loa (June 19.38-41p4)
01580 1580 Betulia (1950 KA) from ATLAS Haleakala (June 19.28-31p4)
01036 1036 Ganymed (1924 TD) from ATLAS Mauna Loa (June 19.25-28p4)
00719 719 Albert (1911 MT) from Castelmartini Obs. (June 18.96p3)

MPEC 2018-M62 - "10:36 UT" - 2007 LT

K07L00T 2007 LT (Earth MOID=2.3 LD, H=22.6 ~102m, NHATS) from PS1 (2017 Dec. 12.43p1 at G=22.9, 2017 Dec. 23.41-44p4 at G=22.6-23.0 & June 18.55-59p4 at w=20.2-4), Visnjan Obs. (June 19.02-04p2), MLS (June 19.34-35p3), ARO Westfield (June 19.35-36p3), and Steward Mt. Lemmon Sta. (June 20.41p4)

MPEC 2018-M61 - "00:31 UT" - 2018 MZ4

K18M04Z 2018 MZ4 (Earth MOID=0.4 LD, H=28.8 ~6m, NHATS target) was picked up at 0736 UT on 17 June by PTF, observing it at June 17.27p2, 17.32p2, and 17.41p2. This detection was confirmed by Schiaparelli Obs. (June 18.99-04p3).

MPEC 2018-M60 - "00:13 UT" - 2018 MK5

K18M05K 2018 MK5 (H=21.6 ~162m) was picked up at 1222 UT on 18 June by PS1, observing it at June 12.53-55p2 at G=22.1, 17.54-56p2 at G=21.54-57, and 18.52-54p4 at w=21.8-22.8. This detection was confirmed by Holmes/CTIO (June 19.25-27p3).

MPEC 2018-M59 - "00:10 UT" - 2018 MJ5

K18M05J 2018 MJ5 (small asteroid, H=26.8 ~15m) was picked up at 0837 UT on 18 June by PS1, observing it at June 18.36-40p3. This detection was confirmed by Visnjan Obs. (June 18.89-90p4), Holmes/CTIO (June 19.15p3), and Steward Mt. Lemmon Sta. (June 19.27-28p3).

MPEC 2018-M58 - "00:06 UT" - 2018 MH5

K18M05H 2018 MH5 (small asteroid, H=24.3 ~47m) was picked up at 0832 UT on 18 June by PS1, observing it at June 16.39-43p3 and 18.36-40p4. This detection was confirmed by Visnjan Obs. (June 18.87p2), Holmes/CTIO (June 19.14p3), Sandlot Obs. (June 19.19-20p2), and Steward Mt. Lemmon Sta. (June 19.20-21p3).

Observers on 20 June '18

A total of 21 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2018-M62 & 2018-M67 -- 2018 MQ5, 2007 LT
`T05`	ATLAS Haleakala in Hawaii, 2 in MPEC 2018-M63 -- 278327, 1580
`T08`	ATLAS Mauna Loa in Hawaii, 2 in MPEC 2018-M63 -- 1627, 1036
`X74`	Campo dos Amarais Obs., 1 in MPEC 2018-M63 -- 420591
`160`	Castelmartini Obs. in Italy, 10 in MPEC 2018-M63 -- 68950, 455550, 415029, 16834, 162168, 153957, 139345, 13553, 7889, 719
`703`	Catalina Sky Survey (CSS) in Arizona, 8 in MPEC 2018-M63 -- 2018 LF5, 2014 US192, 2001 SC170, 53110, 467309, 37336, 138847, 3752
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 7 in MPECs 2018-M58, 2018-M59, 2018-M60, 2018-M63, 2018-M64 & 2018-M65 -- 2018 MP5, 2018 MO5, 2018 MK5, 2018 MJ5, 2018 MH5, 2018 LK2, 2018 JG1
`G96`	Mt. Lemmon Survey (MLS) in Arizona, 19 in MPECs 2018-M62, 2018-M63 & 2018-M67 -- 2018 MQ5, 2018 LO5, 2018 LG, 2018 KG1, 2017 QP17, 2015 TQ178, 2007 LT, 99799, 87025, 85628, 520585, 509821, 25916, 18109, 164400, 139359, 7350, 6569, 5626
`I41`	Palomar Transient Factory (PTF) in southern California, 2 in MPECs 2018-M61 & 2018-M63 -- 2018 MZ4, 2018 LF5
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2018-M58, 2018-M59, 2018-M60, 2018-M62, 2018-M63, 2018-M64, 2018-M65 & 2018-M66 -- 2018 MR5, 2018 MP5, 2018 MO5, 2018 MK5, 2018 MJ5, 2018 MH5, 2007 LT, 2002 OS4, 1999 RV2, 18882, 5011
`H45`	Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2018-M63 -- 444193
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2018-M58 -- 2018 MH5
`204`	Schiaparelli Obs. in Italy, 1 in MPEC 2018-M61 -- 2018 MZ4
`W885`	M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-M63 -- 2018 LU3
`691`	Spacewatch 0.9m telescope in Arizona, 15 in MPEC 2018-M63 -- 2018 LX5, 2018 LU3, 2018 LS2, 2018 LQ2, 2018 LO5, 2018 LN5, 2018 LC3, 2018 LC1, 2018 KG1, 2018 KB1, 2018 JQ1, 2018 JD5, 2018 GL1, 2017 QP17, 2015 MQ101
`291`	Spacewatch 1.8m telescope in Arizona, 7 in MPEC 2018-M63 -- 2018 LV2, 2018 LL2, 2018 LG, 2018 LC, 2018 LB1, 2015 FR117, 2013 LH16
`W34`	Squirrel Valley Obs. in North Carolina, 1 in MPEC 2018-M63 -- 518640
`I52`	Steward Obs. Mt. Lemmon Station in Arizona, 27 in MPECs 2018-M58, 2018-M59, 2018-M62, 2018-M63, 2018-M64, 2018-M65, 2018-M66 & 2018-M67 -- 2018 MR5, 2018 MQ5, 2018 MP5, 2018 MO5, 2018 MJ5, 2018 MJ, 2018 MH5, 2018 MA, 2018 LZ5, 2018 LX5, 2018 LW5, 2018 LS6, 2018 LR5, 2018 LR3, 2018 LQ5, 2018 LP5, 2018 LO5, 2018 LN4, 2018 LM4, 2018 LL2, 2018 LH5, 2018 KF3, 2018 KB1, 2018 JE5, 2018 JD5, 2007 LT, 27346
`T12`	UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-M63 -- 2015 KH157
`L01`	Visnjan Obs., 5 in MPECs 2018-M58, 2018-M59, 2018-M62, 2018-M63 & 2018-M67 -- 2018 MQ5, 2018 MJ5, 2018 MH5, 2018 JV2, 2007 LT
`I15`	Wishing Star Obs. in Rhode Island, 3 in MPEC 2018-M63 -- 2018 LX5, 66391, 467309

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

Impact Risk Monitoring on 20 June '18

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS at 2359 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	1633	2057-2057	1	1.231e-10	-7.29	-7.29	0	JPL: Computed at 09:31 today Pacific time based on 10 observations spanning 4.8205 days (2018-Jun-15.586258 to 2018-Jun-20.40677). Diameter approximately 0.270 km. from weighted mean H=20.49.

2018 MC5	JPL Sentry	0142	2057-2113	15	6.1088972e-06	-5.61	-6.11	0	JPL: Computed at 18:04 June 19th Pacific time based on 21 observations spanning 7.0773 days (2018-Jun-12.475331 to 2018-Jun-19.55259). Diameter approximately 0.032 km. from weighted mean H=25.14.

2018 LR3	JPL Sentry	1438	2077-2117	7	1.059345e-05	-5.88	-5.97	0	JPL: Computed at 07:17 today Pacific time based on 41 observations spanning 9.8887 days (2018-Jun-10.32538 to 2018-Jun-20.21405). Diameter approximately 0.019 km. from weighted mean H=26.25.

2018 LK2	JPL Sentry	1438	R E M O V E D						JPL: Risk listing removed at 1406 UTC today

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 20 June '18

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

2343	Generated Traffic Report
1633	Noted that JPL Sentry has posted 2018 MR5 as an impact risk - see above Grabbed MPEC 2018-M64 - 2018 MO5 - see above Grabbed MPEC 2018-M65 - 2018 MP5 - see above Grabbed MPEC 2018-M66 - 2018 MR5 - see above Grabbed MPEC 2018-M67 - 2018 MQ5 - see above
1438	Noted that JPL Sentry has removed 2018 LK2 as an impact risk - see above Noted that JPL Sentry has updated its 2018 LR3 risk assessment - see above
1402	Grabbed MPEC 2018-M62 - 2007 LT - see above Grabbed MPEC 2018-M63 - Daily Orbit Update - see above
0142	Noted that JPL Sentry has posted 2018 MC5 as an impact risk - see above
0042	Grabbed MPEC 2018-M58 - 2018 MH5 - see above Grabbed MPEC 2018-M59 - 2018 MJ5 - see above Grabbed MPEC 2018-M60 - 2018 MK5 - see above Grabbed MPEC 2018-M61 - 2018 MZ4 - see above

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